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53

5.2.5 WHEEL HUBS/BEARINGS (cont'd)

C.

Wheel Bearings (cont'd):

2.

Bearing Pre-load:

a. Place a pan under

the hub drain plug.

b. Remove the drain

plug from the hub

and drain the oil.

c. Remove the hub end

plate and lay to the
side.

d. Remove the set

screw from the jam
nut.

e. Remove the jam nut

and perforated lock
washer from the
spindle.

f. Use a torque wrench

to tighten the
adjusting nut 100 ft-
lbs. (136 N.m) while
rotating the wheel
assembly in both
directions.

g. Back the adjusting

nut off to zero
torque.

h. Retorque the

adjusting nut again
to 50 ft-lbs (68 N.m)
of torque while
rotating the wheel
assembly in both
directions.

i. Loosen the nut 1/4

turn.

j. Install the perforated

lock washer. Be
sure the adjusting
nut pin aligns with
the hole in the
lock washer. Turn
washer over and/or
adjusting parts as
required.

k. Install jam nut and

tighten to 250-300
ft-lbs. (340-408
N.m.)

Fig. 49 SPINDLE COMPONENTS

2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21

Capscrew
Lockwasher
Hub cap
Gasket
Wheel bearing jam nut
Lockwasher
Wheel bearing adjusting nut
Cone outer wheel bearing
Cup - bearing outer
Brake drum
Cup - bearing inner
Cone - bearing inner
Seal wheel-bearing
Bushing anchor pin
Pin anchor
Beam axle
Camshaft (left)
Camshaft (right)
Washer
Seal
Bushing
Snap ring

DESCRIPTION

ITEM

1

Capscrew
Air chamber
Lockwasher
Locknut
Camshaft bushing assembly
Capscrew
Washer slack adjuster
Locknut - slack adjuster
Automatic slack adjuster
Washer slack adjuster
Snap ring slack adjuster
Spring - brake shoe return
Brake show and lining assy.
Spring - brake shoe retaining
Retainer - brake shoe roller
Roller - brake shoe
Pin - shoe return spring
Dust shield
Hub

22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

DESCRIPTION

ITEM

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Содержание SIDE DUMP GRAVEL TRAILER

Страница 1: ...SIDE DUMP GRAVEL TRAILER OPERATOR S MANUAL...

Страница 2: ...Electrical Lines Stowed All Reflectors Installed and Clean Tires at Specified Pressure All Lights Functioning Wheels Properly Torqued Brakes Release at Proper Pressure Brakes Adjusted Check Integrity...

Страница 3: ...ch must be considered before starting operations with any of Midland Manufacturing Limited s dump equipment Although the information in this manual was current on the date of issue Midland Manufacturi...

Страница 4: ......

Страница 5: ...e for the following period following the date of delivery Structural components manufactured by Midland five years conditional prorated Non structural components manufactured by Midland one year Midla...

Страница 6: ...cost of such parts and or labor as if the work had been done at our factory 4 No warranty on parts will be paid for until the faulty parts have been returned prepaid for our inspection unless agreed o...

Страница 7: ...o Midland Manufacturing Limited immediately upon close of the transaction New Equipment Warranty forms are available from Midland the second warranty form must be returned to Midland showing name of o...

Страница 8: ......

Страница 9: ...cation Number 2 GROSS AXLE WEIGHT RATING GAWR Gross axle weight rating is the rated capacity at the tire ground interface and is to reflect the weakest link in the entire suspension system whether it...

Страница 10: ...formation The plate is located where indicated Please mark the number in the space provided for easy reference Also obtain and mark down the Model Number Production Year and other pertinent informatio...

Страница 11: ...on Guidelines 10 4 1 To the New Operator or Owner 10 4 2 Terminology 11 4 3 Break In 12 4 4 Controls 14 4 5 Pre Operation Vehicle Inspection Procedure 18 4 6 Hooking Up Unhooking 21 4 6 1 Hooking Up 2...

Страница 12: ...9 5 2 9 Slack Adjusters 62 5 2 9 1 Haldex Automatic Slack Adjuster 62 5 2 9 2 Automatic Slack Adjuster Maintenance 63 5 2 10 Trailer ABS 69 5 2 11 Air Chamber Spring Brake 70 5 2 12 Suspension System...

Страница 13: ...g or maintaining the Trailer read this manual carefully and understand the Safety Operation Maintenance and Trouble Shooting information contained within the Operator s Manual Failure to read and foll...

Страница 14: ...sing the following guide lines Indicates an imminently hazardous situation that if not avoided will result in death or serious injury This signal word is to be limited to the most extreme situations t...

Страница 15: ...member YOU are the key to safety Good safety practices not only protect you but also the people around you Make these practices a working part of your safety program Be certain that EVERYONE operating...

Страница 16: ...ming traffic 12 Do not operate unit with spring brakes caged or brakes disabled Block wheels if unhooked 13 Before disconnecting the tractor from the trailer unit s make sure that the tractor and trai...

Страница 17: ...surface 7 Before applying pressure to the system make sure all components are tight and that lines hoses and couplings are not damaged 2 5 TRAVEL SAFETY 1 Read and understand all the information in th...

Страница 18: ...yed a safety sign should also display the current sign 4 Safety signs are available from your Distributor or the factory How to Install Safety Signs Decals Be sure that the installation area is clean...

Страница 19: ...ng and Maintenance information presented in this manual Do not operate or allow anyone else to operate this equipment until such information has been reviewed and understood Annually review this infor...

Страница 20: ...ious safety signs the type of warning and the area or particular function related to that area that requires your SAFETY AWARENESS Think SAFETY Work SAFELY 8 REMEMBER If safety signs have been damaged...

Страница 21: ...safety signs the type of warning and the area or particular function related to that area that requires your SAFETY AWARENESS Think SAFETY Work SAFELY REMEMBER If safety signs have been damaged remove...

Страница 22: ...k engine set park brake remove ignition key and wait for all moving parts to stop and all air pressure be fully exhausted before servicing adjusting repairing or maintaining 6 Stay away from side of t...

Страница 23: ...er B Tandem Axle Trailer C Trailer Body D Front Cylinder E Rear Cylinder F Latch Pivot G Push Block 4 2 TERMINOLOGY The Midland Side Dump Trailers are designed with hydraulic cylinders at the front an...

Страница 24: ...e during the first few miles of operation Always retorque lug bolts and rim fasteners to be sure that they stay tight Then go to the retorquing interval defined in the Maintenance section of every 25...

Страница 25: ...e accelerating braking and side loads between the trailer fifth wheel and towing vehicle a King Pin Check the king pin for cracks chips or whether it is bent Check that there are no cracks or distorti...

Страница 26: ...are tight and not leaking Do not operate if couplers are leaking c Manual System In the manual system a two way valve is mounted on the tractor or trailer frame to direct the flow of oil to the cylind...

Страница 27: ...om the tank Release the cable to close the valve Drain tank daily especially in humid or cold conditions IMPORTANT During cold weather drain moisture from the air tanks every day to prevent ice build...

Страница 28: ...3 Latches Pivots Each side of the frame is designed with 2 latches pivots to control the motion of the tub when unloading Each anchor has a pinned latch that holds or releases the pivot Fig 5 LATCHES...

Страница 29: ...the legs in soft conditions IMPORTANT Do not unhook the trailer when loaded if equipped with drop type landing gear b Manual Crank The landing gear uses a crank to set the position of the landing gea...

Страница 30: ...to prevent accidental disconnection c Hydraulic couplers properly seated and tightened no leaks and properly secured against tangling snagging and chafing with sufficient slack for turning d Air elect...

Страница 31: ...n use only recommended air line anti freeze in the trailer air system Alcohol or methyl hydrate is not to be used because they will remove vital lubricants causing premature failures of valves and com...

Страница 32: ...Tractor Attatched 1 Check for proper connection of the air brake glad hands hydraulic system couplers and secure contact of electrical connection 2 Start engine 3 Build up air pressure in the tractor...

Страница 33: ...of the frame pivot and fifth wheel is not bent broken or cracked Check that the jaws of the lock are open If problems found correct before proceeding c Be sure that the fifth wheel plate is cleaned a...

Страница 34: ...osition Release and hook up again if the jaws are not securely locked around the king pin 16 Check that the trailer front frame is resting on the fifth wheel 17 Connect and secure the hydraulic line S...

Страница 35: ...upler 7 Charge trailer air system and apply brakes 8 Release tractor unit parking brake and pull slowly forward until the trailer frame just slides down the fifth wheel ramp Stop 9 Set the parking bra...

Страница 36: ...mounting 3 Be sure the tub is fully down resting on the latching pivot points 4 Minimize the drop height when loading a Position the loading equipment as close to the bottom of the trailer as possible...

Страница 37: ...area 2 Determine the unloading side Latch the pivot side and release lifting side 3 Open and remove the tarp if so equipped 4 Proceed to the unloading area 5 Stop when in position for unloading Fig 14...

Страница 38: ...d shovel should be used while standing outside the tub Have a back up person there in case a problem arises Use common sense Do not enter tub unless the hydraulic pump is turned off 10 Know the charac...

Страница 39: ...ructions appropriate for all applications However these general guidelines apply to all situations 1 Be sure that the trailer is securely attached to the towing vehicle and locked into position 2 Be s...

Страница 40: ...everal times after going through water 9 Release the brakes just before going over railroad tracks or other rough conditions By allowing the wheels to turn over rough road surfaces there will be no sh...

Страница 41: ...ion pressure Tires should always be operated at their specified pressures At their specified pressures the tire is designed to run with the full width of the tread flat on the contact surface Operatin...

Страница 42: ...SAFETY 1 Read and understand all the information in the Operator s Manual regarding maintenance adjusting and servicing the Trailer unit 2 Place all controls in neutral lower box or block box stop the...

Страница 43: ...ual or extreme operating conditions increase the frequency or perform additional service items to customize this schedule to your application Daily 10 hours or 500 Miles 1 Grease the top and bottom hy...

Страница 44: ...y day to prevent ice build up During cold weather operation use only recommended air line anti freeze in the trailer air system Alcohol or methyl hydrate is not to be used because they will remove vit...

Страница 45: ...r 5000 Miles 1 Grease slack adjusters 1 location each adjuster 2 Grease camshaft bearings 1 location each camshaft 3 Grease fifth wheel a Pivots 2 locations b Surface Fig 18 TIRES TYPICAL Fig 20 FIFTH...

Страница 46: ...s 5 Retorque the following fasteners a Brake wheel end system fasteners Refer to Section 5 2 7 Schematic Hub Fig 21 HUB OIL LEVEL Manual Bearing Adjustment a Tighten to 100 ft lbs c Tighten to 50 ft l...

Страница 47: ...Wheel Bolt Torque Spoke Wheels IMPORTANT Do not over torque fasteners Over torquing can strip threads collapse spacers or lead to other problems that cause loose fasteners Use an accurate torque wren...

Страница 48: ...orquing can strip threads collapse spacers or lead to other problems that cause loose fasteners Use an accurate torque wrench when tightening fasteners Fig 25 10 STUD WHEEL NUTS Outer Outer Wheel Fast...

Страница 49: ...s for torque levels in Maintenance Section 5 2 10 1 and 5 2 10 2 Also refer to suspension manufacturer s recommendation in accompanying manual g Retorque push block mounting bolts if so equipped to 60...

Страница 50: ...38 5 1 3 SERVICING INTERVALS cont d 10 000 Miles 15 000 kms or Monthly 1 Grease landing gear bearings 3 locations crank type only Fig 29 LANDING GEAR TYPICAL...

Страница 51: ...ly or Every 3 Months 1 Check condition of wheel ends Release brakes jack up the axle and spin the wheel Check a Wheel bearings b Wobble c Rims and tires d Brake drag Fig 30 LANDING GEAR Fig 31 MECHANI...

Страница 52: ...ture e Hydraulic cylinder anchor structure f Suspension system anchorage g Axles h Optional accessories i Push block 3 Inspect electrical system components for a Binding b Rubbing abrasion c Looseness...

Страница 53: ...nents for a Binding b Rubbing abrasion c Looseness dangling d Leaks Tighten leaking fittings 5 Inspect air system and components for a Perform leak down test b Rubbing abrading c Cracked hoses Cylinde...

Страница 54: ...42 5 1 3 SERVICING INTERVALS cont d 6 Clean gladhand screens 7 Check brake lining thickness Replace as required Fig 37 SCREENS Fig 38 BRAKE LINING...

Страница 55: ...43 5 1 3 SERVICING INTERVALS cont d 100 000 Miles 150 000 kms or Annually 1 Reline brakes as required 2 Change oil in hubs Fig 39 BRAKE LINING Fig 40 HUB OIL TYPICAL...

Страница 56: ...earings 25 000 miles 40 000 km SAE 80W90 gear oil Change oil 100 000 miles 150 000 km SAE 80W90 gear oil Brakes Camshaft bearing Lubricate 5 000 miles 8 000 km Chassi grease or monthly Slack Adjuster...

Страница 57: ...major problems Operating your trailer in a defective condition can lead to serious mechanical problems or can create safety hazards for the driver bystanders or other operators MAINTENANCE SAFETY 1 R...

Страница 58: ...piece dust shield bolts shown Forged spider 7 Bolt on bushing bolts 8 Cam bushing bolts 9 Air chamber nuts 10 15 15 20 Tighten to 100 loosen tighten to 50 loosen 1 4 turn 250 300 130 165 15 20 25 35 2...

Страница 59: ...me If any kingpin shows such defects it should be replaced immediately Visually inspect the frame and structure of the mounting frame for bends cracks or distortions as part of the pre trip inspection...

Страница 60: ...on Apply a fresh coat of grease to the fifth wheel assembly prior to hooking up the trailer Clean the assembly every 5 000 miles 8 000 km or weekly and annually to perform a thorough inspection Check...

Страница 61: ...check the tire wear when checking air pressure The driver should identify these handling characteristics to service personnel or correction To check axle alignment follow this procedure 1 Select a wo...

Страница 62: ...TANT It may be necessary to build a large trammel bar to measure and clear the discharge gates 9 Set the suspension system as required to set this dimension to its recommended tolerance 10 Repeat meas...

Страница 63: ...ut oil will quickly overheat the hub and cause the bearings to seize Change the oil in the hub when installing new seals to correct a leak B Oil Levels 1 Check the oil level in each wheel hub every 5...

Страница 64: ...he axle on a safety stand to prevent slipping or tipping e Turning the wheel slowly to check the condition of the bearings and to determine if the brakes are dragging f Dragging Brakes Can be felt as...

Страница 65: ...rn washer over and or adjusting parts as required k Install jam nut and tighten to 250 300 ft lbs 340 408 N m Fig 49 SPINDLE COMPONENTS 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Capscrew Loc...

Страница 66: ...doesn t change v Dial indicator will read bearing end play vi If end play does not register between 0 001 0 010 inches 0 025 0 25 mm replace bearings or hub components until it does m Install a new g...

Страница 67: ...n fasteners to their specified torque Use an accurate torque wrench to retorque wheel fasteners every 10 000 miles 15 000 km or monthly whichever comes first Always retorque wheels per the break in sc...

Страница 68: ...orque Spoke Wheels 150 175 210 260 5 8 11 3 4 10 Table 6 Recommended Wheel Bolt Torque 10 Stud Fig 52 HUB PILOTED 5 2 6 WHEELS cont d 2 Hub Piloted Wheels a Mount inner wheel on the hub b Slide on the...

Страница 69: ...ase it indicates the tire may be overloaded underinflated driven too fast improperly sized or a combination of these factors Identify the cause of the problem and correct it before resuming work a Und...

Страница 70: ...e Construction Customers can use radial or bias ply tires on their trailer However it is recommended that different types of tires not be mixed on an axle Each type of tire has different deflection co...

Страница 71: ...king day when checking tire pressure and performing a quick visual of the unit Place your hand on each brake drum to check the temperature of the drum All drums should be approximately the same temper...

Страница 72: ...the drum will cut grooves in the surface and require extra machining to remove them when rebuilding the brakes Several types of friction material are available for use on the brake shoes Each has its...

Страница 73: ...adjuster Secure with snap rings 4 Adjust slack adjuster to its required angle and attach to the push rod Release slack adjuster pawl if so equipped 5 Use a good quality brake grease to lubricate the...

Страница 74: ...Brake Applies When the brake is applied the adjustment regulator rotates through the normal clearance angle and the shoes contact the drum The torque increases and the wormshaft is moved axially causi...

Страница 75: ...mshaft and applies the brakes Service and Lubrication Intervals for Standard Haldex AA1 and S ABA Brake Adjusters IMPORTANT Automatic slack adjusters are for brake adjustment and will not compensate f...

Страница 76: ...onal Check Functional operation of the brake adjuster can be performed on the vehicle by using the following procedure Block wheels to prevent vehicle from grolling Ensure reservoir pressure is at 90...

Страница 77: ...ng brakes must be mechanically caged or released with air All brakes should be released WARNING Foundation Brake Operational Check and Troubleshooting Note Block wheels to prevent vehicle from grollin...

Страница 78: ...r to the center of the clevis pin A fig 13 Use a lever to move the brake adjuster until the brake shoes contact the drum B fig 13 The difference between the fully retracted and drum contact measuremen...

Страница 79: ...shings or replace Air chamber return springs Broken weak missing Replace chamber Air chamber push rod Binding on chamber housing Check adjuster for proper shimming and air chamber position for proper...

Страница 80: ...released measure from the brake chamber face to the center of the clevis pin 2 With a lever pry the slack adjuster arm untilthe brake shoes contact the drum and measure the slack adjuster movement see...

Страница 81: ...tiveness of the brakes during stopping The system consists of valves sensors exciter rings and an Electric Control Unit Review the brochures included in the documentation package to become familiar wi...

Страница 82: ...or locked out Do not work on the brakes unless the springs are caged or locked out Do not move the trailer if the springs are caged When caging or locking out the spring brakes follow this procedure...

Страница 83: ...t the trailer at the start of the day or trip to check the condition of the suspension Ensure that the ride height is set as per proper specifications Also check for loose fasteners or damaged compone...

Страница 84: ...r shop 5 2 12 SUSPENSION SYSTEM cont d 5 2 12 1 AIR RIDE SUSPENSION cont d Typical repairs include but are not limited to 1 Air Spring Replacement Air springs are designed to be virtually trouble free...

Страница 85: ...to raise the frame All valves incorporate a 5 to 15 second time delay to minimize jerking or cycling Replace valve if not functioning properly Check ride height after first use and periodically therea...

Страница 86: ...equired a Always dump the air when parking the trailer and before unhooking b Dumping the air when unloading is not recommended 6 Air System Control Box All air control systems are equipped with valve...

Страница 87: ...tional 25 000 miles 40 000 km or every 3 months retorque all the fasteners to their specified torque per the following table Always use an accurate torque wrench when retorquing fasteners and attach t...

Страница 88: ...76 5 2 12 SUSPENSION SYSTEM cont d 5 2 12 3 SUSPENSION SYSTEM SCHEMATICS Fig 67 Midland Lift Axle...

Страница 89: ...essure and result in a loss of service brakes IMPORTANT New FMVSS 121 regulations mandate higher pressures in the supply line to insure proper brake operation Set the compressor pressure for cut in to...

Страница 90: ...l lights A properly functioning electrical system is the only way an operator can communicate his intentions to other drivers Checking the electrical system includes but is not limited to 1 Replace an...

Страница 91: ...ving read through this trouble shooting section and through the specifically related components manufacturer s manuals please call your local Midland dealer or distributor Before you call please have...

Страница 92: ...ighten axle Replace leaf or complete spring Replace or straighten axle Straighten frame or align axles Repair or replace tire Replace valve assembly or core Replace wheel or rim Over or under inflatio...

Страница 93: ...ace junction box Bad connection Frayed wires Battery on tractor not sufficiently charged Damaged or disconnected wire on ground cable Poor ground at sockets Broken main harness Junction box failure Fr...

Страница 94: ...t holes for leakage Repair or replace air chamber as required Check FFVII brake valve Repair or replace as required Check slack adjuster and chamber spring brake push rod alignment for interference As...

Страница 95: ...bows Check for trapped service air pressure at trailer service delivery hoses If air pressure is noted check for full release of all application valves tractor truck trailer Check air delivery to emer...

Страница 96: ...spring brake push rod angle 90 applied with proper adjustment Replace use rubber grommets with integral brackets Assure slack adjuster and chamber spring brake push rod angle 90 applied with proper ad...

Страница 97: ...rod angle 90 applied with proper adjustment Check air delivery to all reservoirs at system working pressure Check open lines no kinks bends closed shut off cocks restrictions excessive elbows Have au...

Страница 98: ...pring brake drags or won t release Spring parking brake service only service chamber side of spring brake leaks when pressurized for park brake release Replace FFV valve Replace FFV valve Check for Im...

Страница 99: ...0 850 9 19 33 53 80 115 160 290 420 630 17 36 63 100 155 220 305 540 880 1320 12 27 45 75 115 165 220 400 650 970 METRIC TORQUE SPECIFICATIONS 8 8 N m lb ft Bolt Torque Bolt Diameter A 10 9 N m lb ft...

Страница 100: ...usters 62 Automatic Slack Adjuster 62 Automatic Slack Adjuster Maintenance 63 Suspension System 71 Air Ride Suspension 71 Mechanical Suspension 75 Suspension System Schematics 76 Tires 57 Torque Speci...

Страница 101: ...NADA ISSUE DATE JANUARY 2002 REPRINT PART NUMBER 0400000 MIDLAND MANUFACTURING LIMITED BOX 249 ROSENORT MANITOBA CANADA R0G 1W0 PHONE 204 746 2348 TOLL FREE 1 800 827 7023 FAX 204 746 2286 www midland...

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