Tennant 7400 Operator'S Manual Download Page 79

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MAINTENANCE

7400 (GM) 330970 (12--03)

PUSHING, TOWING, AND TRANSPORTING

THE MACHINE

PUSHING OR TOWING THE MACHINE

If the machine becomes disabled, it can be

pushed from the front or rear, but towed only from

the rear.

The propelling pump has a bypass valve to

prevent damage to the hydraulic system when the

machine is being pushed or towed. This valve

allows a disabled machine to be moved for a

very

short distance

and at a speed to not exceed 1.6

kp/h (1 mph). The machine is NOT intended to be

pushed or towed a long distance or at a high

speed.

ATTENTION! Do not push or tow

machine for a long distance and without

using the bypass valve, or the machine

hydraulic system may be damaged.

Turn the bypass valve 90

from the normal

position before pushing or towing the machine.

The illustration shows the bypass valve in the

pushing or towing position.

Summary of Contents for 7400

Page 1: ...7400 330970 www tennantco com 330970 Rev 04 3 2007 The Safe Scrubbing AlternativeR ES Extended Scrub System R 007000 Gas LPG GM Engine Rider Scrubber Operator Manual North America International ...

Page 2: ...tteries hazardous fluids such as antifreeze and oil in an environmentally safe way according to local waste disposal regulations Always remember to recycle MACHINE DATA Please fill out at time of installation for future reference Model No Serial No Machine Options Sales Rep Sales Rep phone no Customer Number Installation Date Tennant Company PO Box 1452 Minneapolis MN 55440 Phone 800 553 8033 or 7...

Page 3: ...TARTING THE MACHINE 31 SCRUBBING AND BRUSH INFORMATION 33 FILLING THE TANKS 34 SCRUBBING 36 DOUBLE SCRUBBING 39 STOP SCRUBBING 39 DRAINING AND CLEANING THE TANKS 40 STOP THE MACHINE 43 Page POST OPERATION CHECKLIST 45 OPERATION ON INCLINES 45 OPTIONS 46 VACUUM WAND 46 MACHINE TROUBLESHOOTING 49 MAINTENANCE 52 MAINTENANCE CHART 52 LUBRICATION 54 ENGINE 54 REAR WHEEL BEARINGS 54 FRONT WHEEL SUPPORT ...

Page 4: ...ICE BRAKES 76 PARKING BRAKE 76 TIRES 76 FRONT WHEEL 76 PUSHING TOWING AND TRANSPORTING THE MACHINE 77 PUSHING OR TOWING THE MACHINE 77 TRANSPORTING THE MACHINE 78 MACHINE JACKING 80 STORING MACHINE 80 OPTIONS 81 SIDE BRUSH 81 REPLACING THE SIDE SCRUB BRUSH 81 REPLACING THE SQUEEGEE BLADE 82 SIDE BRUSH SKIRT 82 SPECIFICATIONS 83 GENERAL MACHINE PERFORMANCE 83 FaST SYSTEM 83 POWER TYPE 84 STEERING 8...

Page 5: ...ovide adequate ventilation Consult with your regulatory authorities for exposure limits Keep engine properly tuned WARNING Hot bumper Keep away CAUTION LPG engine will run for a few seconds after key is turned off Apply parking brake before leaving machine FOR SAFETY 1 Do not operate machine Unless trained and authorized Unless operator manual is read and understood If it is not in proper operatin...

Page 6: ...ntact with battery acid Avoid contact with hot engine coolant Allow engine to cool Keep flames and sparks away from fuel system service area Keep area well ventilated Use cardboard to locate leaking hydraulic fluid under pressure Use Tennant supplied or approved replacement parts 7 When loading unloading machine onto off truck or trailer Turn off machine Use truck or trailer that will support the ...

Page 7: ...come damaged or illegible install a new label in its place EMISSIONS LABEL LOCATED ON THE SIDE OF THE OPERATOR COMPARTMENT 10783 FOR SAFETY LABEL LOCATED ON THE SIDE OF THE OPERATOR COMPARTMENT FLAMMABLE SPILLS LABEL LOCATED ON THE SIDE OF THE OPERATOR COMPARTMENT LPG ENGINE WILL RUN LABEL LOCATED NEXT TO THE IGNITION SWITCH ON THE INSTRUMENT PANEL ...

Page 8: ...T LABEL LOCATED ON THE ENGINE COMPARTMENT LINTEL 10783 STRONG VACUUM LABEL LOCATED ON THE VACUUM FAN HOUSING FLAMMABLE MATERIALS LABEL LOCATED NEXT TO THE SOLUTION TANK COVERS AND ON THE DETERGENT TANK HOT SURFACE LABEL LOCATED ON THE SIDE OF THE BUMPER ...

Page 9: ... SAFETY Do not operate machine unless operation manual is read and understood Check the machine for shipping damage Check to make sure the machine is complete per shipping instructions Keep your machine regularly maintained by following the maintenance information in this manual We recommend taking advantage of a regularly scheduled service contract from your Tennant representative Order parts and...

Page 10: ...F G H M N 10783 A Instrument panel B Steering wheel C Operator seat D Engine cover E Machine front cover F Solution tank covers G Solution tanks H Recovery tank covers I Recovery Tank J Rear squeegee K Side Squeegee L Scrub brush access door M FaST solution system N Fuel tank ...

Page 11: ...gnition switch Maintenance mode Circuit breaker 1 Recovery tank full Circuit breaker 2 Fuel Circuit breaker 3 Diagnostics Circuit breaker 4 Hourmeter Circuit breaker 5 ES Circuit breaker 7 Side brush down and on Circuit breaker 8 Rear squeegee down and vacuum on Cover release Detergent flow Hydraulic fluid only Solution flow Gasoline fuel only Scrub brushes down and on Jack point Engine Check Engi...

Page 12: ...ight G Maintenance mode light H Recovery tank full light I Fuel level low light J OK light K Fuel level gauge L Hourmeter M ES switch option N Side brush switch option O Squeegee switch P Detergent flow switch option Q Scrub switch R Engine speed switch S Steering wheel T Horn button U Ignition switch V Steering column tilt lever W Circuit breakers X Solution flow switch Y Cover release knob Z Che...

Page 13: ...ne You change the speed of the machine with the pressure of your foot the harder you press the faster the machine travels Forward Press the top of the directional pedal with the toe of your foot Reverse Press the bottom of the directional pedal with the heel of your foot Neutral Take your foot off the directional pedal and it will return to the neutral position ...

Page 14: ... possible then press on the parking brake pedal with the toe portion of your foot to lock the parking brake pedal in place FOR SAFETY Before leaving or servicing machine stop on level surface set parking brake turn off machine and remove key Release Press on the brake pedal to unlock the parking brake pedal CHARGING SYSTEM LIGHT The charging system light comes on when the alternator is not operati...

Page 15: ...ine temperature light comes on when the temperature of the engine coolant is more than 107_ C 225_ F If the light comes on stop operating the machine Locate the problem and have it corrected MAINTENANCE MODE LIGHT The maintenance mode light comes on when the control panel diagnostic mode is manually activated The maintenance mode is for service personnel use only To clear the diagnostic mode turn ...

Page 16: ...fuel tank has five minutes of fuel remaining when the level light comes on OK LIGHT The OK light comes on after the control panel has run through and passed a self check every time the machine is started The OK light will go out when the scrub or squeegee switch is activated or the engine speed is changed to Fast HOURMETER The hourmeter records the number of hours the machine has been operated The...

Page 17: ... permanent damage to the system s oxygen sensor and the catalytic converter SQUEEGEE SWITCH The squeegee switch controls the position of the rear squeegee and starts and stops the vacuum fan The rear squeegee can be operated separately from the scrub brushes for water pick up Lower and start Press the squeegee switch The indicator light above the switch will come on Raise and stop Press the squeeg...

Page 18: ... switch The indicator above the switch comes on Up and off Press the side brush switch The indicator above the switch goes off NOTE The side brush will lower and start when the scrubbing operations start The main scrub brushes have to be on for the side brush to operate DETERGENT FLOW SWITCH OPTION The detergent flow switch starts and stops the detergent pump for the optional ES system When the ma...

Page 19: ...e side brush and the ES system will default to the last setting used when the scrubbing operations are started again Start Press the scrub switch The indicator light above the switch will come on Stop Press the scrub switch The indicator light above the switch goes off Scrub brush pressure Press and hold the scrub switch The brush pressure will scroll through the three settings The pressure settin...

Page 20: ...atically Fast Press the engine speed switch and the right indicator light comes on This speed is for transporting and scrubbing NOTE The engine will automatically operate in the Fast speed when the scrubbing operations are started STEERING WHEEL The steering wheel controls the machine s direction The machine is very responsive to the steering wheel movements Left Turn the steering wheel to the lef...

Page 21: ...the way clockwise Release the key as soon as the engine starts Stop Turn the key counter clockwise CAUTION LPG engine will run for a few seconds after key is turned off Apply parking brake before leaving machine NOTE To protect the engine s emission components on LPG powered machines the engine will continue to operate for a few seconds after the ignition switch is turned off STEERING COLUMN TILT ...

Page 22: ... it must be reset manually Press the reset button after the breaker has cooled down If the overload that caused the circuit breaker to trip is still there the circuit breaker will continue to stop current flow until the problem is corrected The circuit breakers are located in the operator compartment The chart lists the circuit breakers and the electrical components they protect Circuit Breaker Ra...

Page 23: ... hood Main Harness Fuse Fuse Rating Circuit Protected FU 1 15 A Circuit board The engine harness fuses are located near the engine under the engine cover Access the fuses by opening the engine cover Engine Harness Fuses S N 007000 007078 Fuse Rating Circuit Protected FU 1 5 A Key switch FU 2 20 A Main power FU 3 15 A Auxilary power FU 4 15 A Fuel pump Engine Harness Fuses S N 007079 Fuse Rating Ci...

Page 24: ...tch Disable the FaST system before using the machine for conventional scrubbing For machines with the FaST system the FaST solution flow switch controls the flow of solution to the floor Start 1 Place the FaST solution flow switch in the middle position Use this flow rate for smooth floors and light dirt Increase 2 Press the top of the FaST solution flow switch Use this flow rate for rough floors ...

Page 25: ...emoving the drain hose cap from the tank access cap Pull out the solution tank hose and remove the drain hose end cap RECOVERY TANK DRAIN HOSE The recovery tank drain hose is used to drain the recovery tank Drain the recovery tank by removing the drain hose cap from the tank access cap Pull out the recovery tank hose and remove the drain hose end cap ...

Page 26: ... Pull on the release lever and lower the seat mounting plate LATCHES The side doors engine cover debris tray back grille and solution tank covers are secured with latches Open the brush side doors Push down on the door latch Open the engine side door Pull out on the door latch Open the engine cover Open the engine side door and pull on the latch release Release the debris tray Pull down on the lat...

Page 27: ...h a solution valve to the scrub brushes The brushes scrub the floor As the machine travels forward the squeegee wipes the dirty solution off the floor which is then picked up and drawn into the recovery tank When using the ES mode the solution in the recovery tank is filtered and returned to the solution tank to be reused When scrubbing is finished drain and clean the recovery tank If using the ES...

Page 28: ...ith all double scrubbing and heavy duty scrubbing applications Using the FaST system can increase productivity by 30 by reducing your dump fill cycle It will also reduce chemical usage and storage space One FaST PAK of concentrated agent can scrub up to 1 million sq ft NOTE Do not enable the FaST system with conventional cleaning detergents in the solution tank Drain rinse and refill the solution ...

Page 29: ...ions Check that the debris tray is empty and clean ES machines Check that the ES filter and solution outlet filter is clean Check for loose fittings or wires Check the condition of the v belt Check the hydraulic oil level Check the cooling system level ES machines Check detergent level in the detergent tank fill as required FAST Scrubbing Check the FaST PAK concentrate agent level replace carton a...

Page 30: ...r Cleaning Concentrate is specifically designed for use with the FaST system scrubbing application NEVER use a substitute machine damage will result FOR SAFETY When using machine always follow the handling instructions on chemical container 2 Empty the solution tank See the DRAINING AND CLEANING THE TANKS section of the manual NOTE When scrubbing with the FaST system option use clean water only Do...

Page 31: ... hose onto the hose storing plug when the supply hose is not connected to the FaST PAK This will prevent the FaST solution system from drying out and clogging up the hose 7 When replacing an empty FaST PAK carton allow the new FaST PAK detergent to gravity feed into the system for several minutes prior to operating the FaST system If the detergent does not flow out of the FaST PAK simply squeeze a...

Page 32: ...flames and sparks away from fuel system service area Keep area well ventilated 5 Put on gloves and remove the quick disconnect tank coupling 6 Unlatch and remove the empty LPG fuel tank from the machine and store the tank in a designated safe area NOTE Make sure the LPG fuel tank matches the fuel system liquid tank with liquid system 7 Carefully put the filled LPG tank in the machine so that the t...

Page 33: ...ersonnel STARTING THE MACHINE 1 LPG powered machines Open the liquid service valve slowly NOTE Opening the service valve too quickly may cause the service check valve to stop the flow of LPG fuel If the check valve stops the fuel flow close the service valve wait a few seconds and open the valve slowly again 2 You must be in the operator s seat with the directional pedal in neutral and your foot o...

Page 34: ...ge to the starter motor may occur 4 Allow the engine and hydraulic system to warm up three to five minutes WARNING Engine emits toxic gases Severe respiratory damage or asphyxiation can result Provide adequate ventilation Consult with your regulatory authorities for exposure limits Keep engine properly tuned 5 Release the machine parking brake 6 Select the Fast engine speed with the engine speed s...

Page 35: ...e best scrubbing results When approaching a corner turn off the solution flow before turning the corner Turn on the solution flow once the machine has completed the turn When the recovery tank is full the recovery tank full indicator will stay lit and the scrubbing operations will shut off The recovery tank will have to be drained and cleaned Then refill the solution tank with clean water and dete...

Page 36: ...d floors Cleans without scuffing Super abrasive bristle side scrub brush Nylon fiber impregnated with abrasive grit to remove stains and soilage Strong action on any surface performing well on buildup grease or tire marks FILLING THE TANKS 1 Start the engine 2 Drive the machine to the filling site 3 Shut the engine off 4 Set the parking brake FOR SAFETY Before leaving or servicing machine stop on ...

Page 37: ... containers 6 FaST SCRUBBING Open the solution tank covers and fill the solution tanks to 75 mm 3 in below the tank openings with cool clear water only Do not add cleaning detergents NOTE When cleaning using FaST USE CLEAR COOL WATER ONLY DO NOT add cleaning agents in solution tank Conventional cleaning agents restorers may cause failure to the FaST solution system ES mode option Lift up the opera...

Page 38: ...low tank openings and filling the recovery tank half full NOTE If you do not want to use the ES system do not put any water in the recovery tank Turn off the ES switch 7 Close the tank covers SCRUBBING 1 Start the engine FOR SAFETY When starting machine keep foot on brake and directional pedal in neutral 2 Drive the machine to the area to be cleaned 3 FaST SCRUBBING Press the FaST switch to the Fa...

Page 39: ... can cause an explosion or fire Do not pickup As long as the machine is not in reverse the scrub head will lower and the scrub brushes will start The rear squeegee will automatically lower and the vacuum fan will start The solution flow will start if the solution flow switch is on The optional side brush will lower and turn on if the switch is on Also the optional ES system and detergent pump will...

Page 40: ... Turn off the detergent pump only if detergent has been added to the solution tank 6 Adjust the brush pressure for the cleaning application The brush pressure has three positions Under normal conditions the brush pressure should be set in the minimum setting Under heavy grime conditions the brush pressure should be set in the maximum setting 7 Drive the machine forward and scrub as required 10898 ...

Page 41: ...e solution remain on the floor for 5 to 15 minutes Then make a second scrubbing pass with the squeegee down FOR SAFETY When using machine go slow on inclines and slippery surfaces This is not recommended in areas where the cleaning solution will run under racks or damage products STOP SCRUBBING 1 Press the scrub switch to stop the scrubbing operations The scrub brushes will stop and the scrub head...

Page 42: ...very tank should be drained and cleaned The solution tank then can be filled again for additional scrubbing If you used the machine in ES mode the solution tank should also be drained and cleaned when you are finished scrubbing 1 Stop scrubbing 2 Drive the machine next to an appropriate disposal site 3 Shut the engine off 4 Set the parking brake ...

Page 43: ... the engine on and lower the rear squeegee to start up the vacuum fan before removing the drain hose end cap Once the drain hose is placed next to the floor drain raise the squeegee and shut off the engine Be sure to set the machine parking brake For machines with the positive solution control drain connect the hose Place the hose end next to the floor drain and open the drain valve 7 Open the rec...

Page 44: ...ion tank with clean water Rinse the solution outlet filter at the bottom of the tank through the drain access 12 Close the tank covers 13 Replace the drain caps and drain hoses 14 Unlatch the rear squeegee and tray assembly Swing out the assembly 15 Disconnect the vacuum hose from the side of the debris tray Slide the debris tray out empty and clean it 16 Clean the debris screen located at the bot...

Page 45: ...ACHINE 1 Stop scrubbing and drive the machine forward until the vacuum fan shuts off 2 Take your foot off the directional pedal Step on the brake pedal 3 Select the Idle position with the engine speed switch 4 Set the machine parking brake 10900 ...

Page 46: ...the engine s emission components on LPG powered machines the engine will continue to operate for a few seconds after the ignition switch is turned off FOR SAFETY Before leaving or servicing machine stop on level surface set parking brake turn off machine and remove key 6 LPG powered machines Close the LPG tank s liquid service valve 07810 ...

Page 47: ...tank service valve is closed Check for fuel odor that indicates a fuel leak Check under the machine for leak fuel oil coolant scrubbing solution Check the service records to determine the maintenance requirements FaST Scrubbing If FaST PAK is empty after scrubbing install a new FaST PAK or connect supply hose to the storage plug OPERATION ON INCLINES Drive the machine slowly on inclines Use the br...

Page 48: ...each of the machine WARNING Flammable materials or reactive metals can cause an explosion or fire Do not pickup 1 Stop the machine within reach of the area to be vacuumed 2 Lower the squeegee and shut the engine off 3 Set the machine parking brake FOR SAFETY Before leaving or servicing machine stop on level surface set parking brake turn off machine and remove key 10901 ...

Page 49: ...eegee suction hose from the rear squeegee and connect the vacuum hose 5 Put together the wand and the wand hose 6 Start the engine 7 Select the Fast engine speed with the engine speed switch 8 Lower the squeegee to turn the vacuum system on 10900 10901 ...

Page 50: ...12 03 48 9 Vacuum the floor 10 Shut the engine off 11 Remove the vacuum hose from the squeegee suction hose and connect the squeegee suction hose to the rear squeegee 12 Put the vacuum wand and hose in the mounting clips 06599 ...

Page 51: ...pty recovery tank use less or change detergent Vacuum hose to rear squeegee disconnected or damaged Reconnect or replace vacuum hose Vacuum fan to recovery tank hose damaged Replace hose Little or no solution flow to the fl Solution tank empty Fill solution tank floor Solution supply lines plugged Flush solution supply lines ES switch off Turn ES switch on Solution flow switch turned off Turn solu...

Page 52: ...n warm water and clean FaST PAK carton is empty or not connected Replace FaST PAK carton and or connect supply hose FaST system is not primed To prime operate the FaST solu tion system for 5 to 10 minutes Clogged flow control orifice screen Remove and clean orifice screen Faulty pump or air compressor Contact TENNANT representative Clogged filter screen Drain solution tank remove and clean filter ...

Page 53: ...OPERATION 51 7400 GM 330970 3 05 ...

Page 54: ... 1 q g Check deflection 1 11 Side Squeegees Check for damage and wear 2 10 Scrub brushes Check for damage and wear 1 7 Recovery tank Clean 1 7 Recovery tank ES mode Clean ES filter 1 5 Solution tank ES mode Clean 1 14 FaST PAK supply hose and connector Clean and connect hose to stor ing plug when not in use 1 50 Hours 10 Scrub brushes Rotate end for end or front to rear 1 14 FaST Filter screen Cle...

Page 55: ...4 Engine Clean or replace and adjust spark plugs 4 Clean PCV hoses 2 Replace fuel filter element LPG 1 Replace air filter 1 800 Hours 3 Hydraulic reservoir Replace filler cap 1 y Replace suction strainer 1 Change hydraulic fluid HYDO 1 4 Engine Check timing belt 1 g Replace fuel filter Gas 1 4 Hydraulic fluid filter Change filter element 1 Hydraulic hoses Check for wear and damage All 6 Cooling sy...

Page 56: ...oil dipstick The engine oil capacity is 3 5 L 3 7 qt including the oil filter REAR WHEEL BEARINGS Inspect the rear wheel bearings for seal damage and repack and adjust every 400 hours of operation Use Lubriplate EMB grease Tennant part number 01433 1 FRONT WHEEL SUPPORT BEARING The front wheel support pivots the front wheel The front wheel support bearings must be lubricated every 200 hours of ope...

Page 57: ...k is marked with FULL and ADD levels to indicate the level of hydraulic fluid in the reservoir Lubricate the filler cap gasket with a film of hydraulic fluid before putting the cap back on the reservoir ATTENTION Do not overfill the hydraulic fluid reservoir or operate the machine with a low level of hydraulic fluid in the reservoir Damage to the machine hydraulic system may result Drain and refil...

Page 58: ...ocally available hydraulic fluid is used make sure the specifications match Tennant hydraulic fluid specifications Using substitute fluids can cause premature failure of hydraulic components ATTENTION Hydraulic components depend on system hydraulic fluid for internal lubrication Malfunctions accelerated wear and damage will result if dirt or other contaminants enter the hydraulic system HYDRAULIC ...

Page 59: ... coolant level must be between the two indicator marks when the engine is cold Check the radiator coolant level every 100 hours of operation Use a clean water mixed with a permanent type ethylene glycol antifreeze to a 34_ C 30_ F rating FOR SAFETY When servicing machine avoid contact with hot engine coolant ...

Page 60: ... The coolant system must be completely filled with coolant to keep the engine from overheating When filling the radiator with coolant use the drain cocks to ensure that all the air is out of the system Gasoline Only LP Only LP Gasoline ...

Page 61: ...ar eye and ear protection when using pressurized air or water Flush the radiator and the cooling system every 800 hours of operation using a dependable cleaning compound AIR FILTER INDICATOR For machines serial number 008999 and below The air filter indicator shows when to replace the air filter element Check the indicator daily The indicator s red line will move as the air filter element fills wi...

Page 62: ...r 009000 and above SPARK PLUGS Clean or replace and set the gap of the spark plugs every 400 hours of operation The proper spark plug gap is 1 mm 0 040 in CRANKCASE VENTILATION SYSTEM Clean the crankcase ventilation hoses after every 400 hours of operation TIMING BELT Check the engine timing belt every 800 hours of operation and replace the engine timing belt evey 1600 hours of operation FUEL FILT...

Page 63: ... from the LPG electronic pressure regulator after every 100 hours of operation FOR SAFETY When servicing machine keep flames and sparks away from fuel system service area Keep area well ventilated ELECTRONIC FUEL INJECTION The electronic fuel injection system requires no adjustment The fuel injection system is equipped with a manifold absolute pressure sensor MAP Sensor The MAP sensor senses barom...

Page 64: ...y after the first 50 hours of operation and every 800 hours there after BELTS AND CHAINS ENGINE BELT The engine fan belt is driven by the engine crankshaft pulley and drives the alternator pulley Proper belt tension is 13 mm 0 50 in from a force of 4 to 5 kg 8 to 10 lb applied at the mid point of the longest span Check and adjust the belt tension every 100 hours of operation WARNING Moving belt an...

Page 65: ...ushes can be rotated front to rear and end for end to increase brush life The brushes should be replaced if large portions of the brush bristles are missing or if the remaining brush bristles measure 15 mm 0 50 in in length NOTE Cylindrical scrub brushes must be installed with the V patterns on the brushes pointing towards each other for best debris pick up NOTE Be sure to replace the scrub brushe...

Page 66: ...ion switch FOR SAFETY Before leaving or servicing machine stop on level surface set parking brake turn off machine and remove key 6 Open the brush door 7 Disconnect the leveling rod from the machine frame by pulling back on the locking collar and pulling the rod end off the ball stud 8 Remove the idler arm mounting bolt Thread the mounting bolt into the idler arm removal hole if you are having tro...

Page 67: ...ugs into the brushes 13 Line up the brush wrap guide pins with idler plate Line up the idler mounting arm with the mounting pins 14 Secure the idler mounting arm to the scrub head with the mounting bolt 15 Pull the locking collar back on the leveling rod end and snap the leveling rod end onto the ball stud 16 Adjust the brush pattern as described in CHECKING AND ADJUSTING SCRUB BRUSH PATTERN CHECK...

Page 68: ...h of the brush pattern If the brush patterns have parallel sides and are the same width the brushes do not need taper adjustment If one or both of the brush patterns are tapered the scrub head will have to be adjusted to straighten the brush pattern A Loosen the three scrub head mounting bolts on the idler or drive side of the scrub head Move the scrub head up to decrease the pattern width on that...

Page 69: ...e is narrower then the other the scrub head needs to be leveled from front to rear A Lengthen or shorten the leveling rods on both sides of the scrub head Lengthening the rods will increase the rear brush pattern width Shortening the rods will will increase the front brush pattern 10653 ...

Page 70: ...ng blast of warm water The right tank can be flushed through the drain opening Drain the tank with the solution tank drain hose The solution tank on machines with the ES option should be drained and cleaned daily Rinse the solution outlet filter at the bottom of the tank through the drain access DEBRIS TRAY The debris tray is located between the scrub head and the squeegee Debris from the scrub br...

Page 71: ...he FaST system filter screen is located on top the scrub head and filters the water from the solution tank as it flows into the FaST system Remove the filter screen bowl and clean the filter screen after every 50 hours of machine operation Empty the solution tank before removing the filter FaST SYSTEM AIR PUMP FILTER The FaST system air pump filter is located on the side of the air pump Remove and...

Page 72: ...of the squeegee blades if the leading edge is torn or worn half way through the thickness of the blade The squeegee can be adjusted for leveling and deflection The deflection of the squeegee blades should be checked daily or when scrubbing a different type of floor The leveling of the squeegee should be checked every 100 hours of machine operation ADJUSTING REAR SQUEEGEE BLADE DEFLECTION Deflectio...

Page 73: ...e NOTE If the locking brackets won t slide over lift up the end of the squeegee to pick the caster up off the floor slightly Then slide the locking bracket over 5 Turn the adjustment knob clockwise to decrease deflection turn the adjustment knob counter clockwise to increase the deflection Be sure to turn the knobs the same number of turns 6 Start the engine and drive the machine forward again to ...

Page 74: ...emove key 3 Look at the deflection over the full length of the squeegee blade 4 If the deflection is not the same over the full length of the blade loosen the locking nut on the two rear squeegee balljoints 5 Turn the balljoint adjustment nut clockwise from the rear of the machine to increase the deflection at the ends of the squeegee Turn the balljoint adjustment nut counter clockwise from the re...

Page 75: ...wiping edge To use the next wiping edge rotate the blade end for end To use the next wiping edge rotate the top edges down bottom edges up To use the last edge rotate the blade end for end Replace any worn or damaged squeegee blades REPLACING OR ROTATING REAR SQUEEGEE BLADES 1 Make sure the squeegee is raised off the floor 2 Shut the engine off and set the parking brake FOR SAFETY Before leaving o...

Page 76: ...they become damaged or lose their shape or resilience Replace the squeegee deflectors whenever they become worn REPLACING SIDE SQUEEGEE BLADES 1 Raise the scrub head 2 Shut off the engine and set the machine parking brake FOR SAFETY Before leaving or servicing machine stop on level surface set parking brake turn off machine and remove key 3 Remove the cotter pin clevis pin deflector and the retain...

Page 77: ... SEALS SCRUB HEAD SKIRTS A skirt is mounted on each side of the scrub head Check the skirts for wear or damage every 100 hours of operation COVER SEALS Check the solution and recovery tank cover seals for wear or damage every 100 hours of operation ...

Page 78: ... operation PARKING BRAKE The parking brake is set with the parking brake pedal that activates the service brakes Check the parking brake adjustment every 200 hours of operation TIRES The machine tires are solid Check the tires every 100 hours of operation for damage FRONT WHEEL Torque the front wheel nuts twice in the pattern shown to 122 to 149 Nm 90 to 110 ft lb after the first 50 hours of opera...

Page 79: ...pushed or towed This valve allows a disabled machine to be moved for a very short distance and at a speed to not exceed 1 6 kp h 1 mph The machine is NOT intended to be pushed or towed a long distance or at a high speed ATTENTION Do not push or tow machine for a long distance and without using the bypass valve or the machine hydraulic system may be damaged Turn the bypass valve 90_ from the normal...

Page 80: ...ch the machine onto the truck or trailer attach the winching chains in the holes at the bottom of the rear bumper If the machine has the optional rear tie down brackets attach the winching chains to them 4 Turn the bypass valve 90_ from the normal position before winching the machine onto the truck or trailer See PUSHING OR TOWING THE MACHINE section of this manual Make sure the machine is centere...

Page 81: ...ie down brackets use them to tie down the machine The rear tie down locations are in the holes at the bottom of the rear bumper If the machine has the optional rear tie down brackets use them to tie down the machine 7 If the loading surface is not horizontal or is higher than 380 mm 15 in from the ground use a winch to unload machine If the loading surface is horizontal AND is 380 mm 15 in or less...

Page 82: ...ace set parking brake turn off machine and remove key The front jacking location is the left front corner of the machine frame The rear jacking locations are the two rear corners of the machine frame FOR SAFETY When servicing machine block machine tires before jacking machine up FOR SAFETY When servicing machine jack machine up at designated locations only Block machine up with jack stands STORING...

Page 83: ...the engine and set the parking brake FOR SAFETY Before leaving or servicing machine stop on level surface set parking brake turn off machine and remove key 3 Press the brush spring clip ends together with your thumb and index finger The brush will drop off the drive hub 4 Line up the new side brush drive socket with the drive hub 5 Lift and snap the side brush onto the drive hub 6 Check to make su...

Page 84: ...e retainer clip from the end of the squeegee 5 Pull the squeegee blade out the front of the squeegee frame 6 Slide the new squeegee blade onto the frame NOTE Lubricating the squeegee frame where the squeegee makes contact will make it easier to install the squeegee blade 7 Install the retainer clip on the end of the squeegee 8 Install the side brush guard SIDE BRUSH SKIRT The side brush skirt is l...

Page 85: ...6 7 gal Total capacity with ES option 398 L 105 gal GVWR 2087 kg 4600 lb GENERAL MACHINE PERFORMANCE Item Measure Maximum forward speed 12 9 kmh 8 mph Maximum reverse speed 6 4 kmh 4 mph Minimum aisle turn width 3185 mm 125 5 in Minimum turning radius right 2660 mm 104 75 in Minimum turning radius left 2030 mm 79 75 in Maximum rated incline for scrubbing 6_ Maximum rated incline for transport of m...

Page 86: ...d speed under load Firing order 950 50 rpm 2400 50 rpm 1 3 4 2 Spark plug gap Valve clearance cold Engine lubricating oil with filter 1 mm 0 04 in No Adjustment OHC Engine 3 5 L 3 7 qt 5W30 SAE SG SH STEERING Type Power source Emergency steering Front wheel hydraulic cylinder and rotary valve controlled Hydraulic accessory pump Manual HYDRAULIC SYSTEM System Capacity Fluid Type Hydraulic reservoir...

Page 87: ...SPECIFICATIONS 85 7400 GM 33970 12 03 1327 mm 52 25 in 2460 mm 97 in 2045 mm 80 5 in 1475 mm 58 in 1525 mm 60 in 1260 mm 49 6 in 1610 mm 63 4 in 1483 mm 58 4 in 1686 mm 66 4 in 10919 MACHINE DIMENSIONS ...

Page 88: ...de brush 16 Squeegee switch 15 Controls 10 Brake pedal 12 Charging system light 12 Check engine light 20 Circuit breakers 20 Cover release knob 18 Detergent flow switch 16 Directional pedal 11 Engine oil pressure light 13 Engine speed switch 18 ES switch 16 FaST solution flow switch option 22 FaST switch option 22 Fuel level gauge 15 Fuel level low light 14 Fuses 21 High engine temperature light 1...

Page 89: ... switch 22 FaST Spray Tube 70 FaST Supply Hose Connector 69 FaST switch 22 FaST System 69 FaST supply hose connector 69 FaST system 26 FaST System Air Pump Filter 69 FaST System Filter Screen 69 Filling the tanks 34 Filter FaST System Air Pump Filter 69 FaST System Filter Screen 69 Front wheel Lubrication 54 Propelling motor shaft torque 62 Wheel nuts torque 76 Fuel Check for leaks 45 Fuel filters...

Page 90: ...intenance chart 52 Maintenance mode light 13 Motors Propelling 62 O OK Light 14 OK light 14 Operation 7 52 Operation on inclines 45 Operator Responsibility 7 Operator seat 24 Options 46 48 81 Detergent flow switch 16 ES switch 16 Replacing side brush 81 Replacing side brush squeegee blade 82 Side brush 81 Side brush skirt 82 Side brush switch 16 Vacuum wand 46 48 P Parking brake 76 Parking brake p...

Page 91: ...tion flow switch 22 Solution outlet filter 68 Solution system 68 Detergent flow switch 16 ES switch 16 Flow switch 22 Recovery tank 68 Solution tank 68 Solution tank 68 Cover latch 24 Drain and clean 45 Drain hose 23 Outlet filter 68 Solution tank drain hose 23 Spark plugs 60 Specifications 83 85 Braking system 84 FaST System 83 Hydraulic system 84 Machine capacities 83 Machine dimensions 83 Machi...

Page 92: ...location 79 Timing belt 60 Tires 76 Specifications 84 Towing machine 77 Transporting machine 77 Transporting the machine 78 Travel speed 83 Tray Debris 68 71 Troubleshooting 49 51 V Vacuum fan Switch 15 Vacuum hoses Check 45 Vacuum wand 46 48 ...

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Tennant 7400, Operator'S Manual

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