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SK750/SK755 Operator’s Manual

Overview - 4

Intended Use

CMW

Intended Use

The SK750/SK755 is a platform, rubber track mini skid steer unit designed for light-to medium-duty
construction work. The SK750/SK755 has a quick attach mount plate which makes it easy for an operator
to connect different attachments. The unit is designed for operation in temperatures typically experienced
in earth moving and construction work environments. Provisions may be required to operate in extreme
temperatures. Contact your Ditch Witch dealer.

Use in any other way is considered contrary to the

intended use.

The SK750/SK755 should be operated, serviced, and repaired only by persons familiar with its particular
characteristics and acquainted with the relevant safety procedures.

Equipment Modification

This equipment was designed and built in accordance with applicable standards and regulations.
Modification of equipment could mean that it will no longer meet regulations and may not function properly
or in accordance with the operating instructions. Modification of equipment should only be made by
competent personnel possessing knowledge of applicable standards, regulations, equipment design
functionality/requirements and any required specialized testing.

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Содержание SK750

Страница 1: ...SK750 SK755 Operator s Manual 053 2570 Issue 1 0 Original Translation CMW...

Страница 2: ...rator s Manual Overview 2 CMW Overview Chapter Contents Serial Number Location 3 Intended Use 4 Equipment Modification 4 Unit Components 5 Operator Orientation 6 About This Manual 7 Bulleted Lists 7 N...

Страница 3: ...ial Number Location CMW Serial Number Location Record serial numbers and date of purchase in spaces provided Unit serial number is located as shown Item date of manufacture date of purchase unit seria...

Страница 4: ...ler Use in any other way is considered contrary to the intended use The SK750 SK755 should be operated serviced and repaired only by persons familiar with its particular characteristics and acquainted...

Страница 5: ...Overview 5 SK750 SK755 Operator s Manual Unit Components CMW Unit Components 1 Operator station 2 Tracks 3 Engine compartment 4 Lift arms 5 Mount plate t35om001w eps 1 2 3 4 5...

Страница 6: ...SK750 SK755 Operator s Manual Overview 6 Operator Orientation CMW Operator Orientation 1 Front of unit 2 Right side of unit 3 Rear of unit 4 Left side of unit 1 2 3 4 t35om002w eps...

Страница 7: ...Overview pages for basic operating procedures Cross references such as See page 50 will direct you to detailed procedures Bulleted Lists Bulleted lists provide helpful or important information or cont...

Страница 8: ...ent copy contact your Ditch Witch dealer If you need assistance in locating a dealer visit our website at www ditchwitch com or write to the following address The Charles Machine Works Inc Attn Market...

Страница 9: ...tor s Manual CMW SK750 755 Operator s Manual Issue number 1 0 OM 9 12 Part number 053 2570 Copyright 2012 by The Charles Machine Works Inc Ditch Witch CMW and Roto Witch are registered trademarks of T...

Страница 10: ...installation path if needed preparing the jobsite for work and connecting attachments 30 Drive procedures for startup cold start driving and shutdown 38 Transport procedures for lifting hauling and to...

Страница 11: ...Contents 11 SK750 SK755 Operator s Manual CMW...

Страница 12: ...r Contents Guidelines 13 Safety Alert Classifications 14 Safety Alerts 15 Emergency Procedures 18 Electric Strike Description 18 If an Electric Line is Damaged 19 If a Gas Line is Damaged 19 If a Fibe...

Страница 13: ...hazards and use correct tools and machinery safety equipment and work methods for jobsite Mark jobsite clearly and keep spectators away Wear personal protective equipment Review jobsite hazards safet...

Страница 14: ...rt levels DANGER WARNING and CAUTION Learn what each level means indicates an imminently hazardous situation which if not avoided will result in death or serious injury indicates a potentially hazardo...

Страница 15: ...ause death or serious injury Know location of lines and stay away Deadly gases Lack of oxygen or presence of gas will cause sickness or death Provide ventilation Jobsite hazards could cause death or s...

Страница 16: ...serviced Looking into fiber optic cable could result in permanent vision damage Do not look into ends of fiber optic or unidentified cable Pressurized fluid or air could pierce skin and cause injury o...

Страница 17: ...e page 75 for tip capacity Flying objects may cause injury Wear hard hat and safety glasses Hot parts may cause burns Do not touch until cool Exposure to high noise levels may cause hearing loss Wear...

Страница 18: ...ollows all paths to ground not just path of least resistance Pipes hoses and cables will conduct electricity back to all equipment Low voltage current can injure or kill Many work related electrocutio...

Страница 19: ...EA The ground surface may be electrified so take small steps with feet close together to reduce the hazard of being shocked from one foot to the other For more information contact your Ditch Witch dea...

Страница 20: ...ches on Fire Perform emergency shutdown procedure and then take the following actions The order and degree of action will depend on the situation Immediately move battery disconnect switch if equipped...

Страница 21: ...Safety 21 SK750 SK755 Operator s Manual Emergency Procedures CMW...

Страница 22: ...Glow plug button 2 Engine coolant temperature gauge 3 Engine oil pressure indicator 4 Hydraulic fluid temperature indicator 5 Hydraulic fluid level sight glass 6 Ignition switch 7 Hourmeter 8 Engine...

Страница 23: ...0 seconds continuously 2 Engine coolant temperature gauge Displays coolant temperature IMPORTANT If temperature goes above 230 F 110 C 1 Stop operation set throttle to low idle and allow engine to coo...

Страница 24: ...seconds 7 Hourmeter Displays engine operating time Use these times to schedule service 8 Engine coolant temperature indicator Lights and alarm sounds when engine coolant temperature is too high 1 Sto...

Страница 25: ...s 1 Left track drive control or Track drive joystick optional 2 Right track drive control or Track drive joystick optional 3 Throttle 4 Parking brake lever 5 Lift arm control 6 Attachment drive contro...

Страница 26: ...as indicated above Track drive joystick optional l To move forward push To move backward pull To go faster in either direction move control farther from neutral To stop move to neutral To steer while...

Страница 27: ...e lift lever lock and push forward To engage attachment drive in forward lift lever lock and pull back IMPORTANT Lever lock engages when control is in neutral Use foot pedal to hold attachment control...

Страница 28: ...seats in the open position Start engine and run five minutes to warm hydraulic fluid To close bypass valve rotate knob until it seats in the closed position IMPORTANT Use the hydraulic fluid bypass to...

Страница 29: ...indicator Item Description Notes 1 Level indicator To level bucket adjust bucket position until indicator is at top of sleeve To level other attachments adjust attachment position until it is level Ma...

Страница 30: ...Ground Penetrating Jobs 31 Above Ground Jobs 31 Inspect Site 32 Identify Hazards 32 Classify Jobsite 33 Inspect Jobsite 33 Select a Classification 33 Apply Precautions 34 Check Supplies and Prepare E...

Страница 31: ...ffic area contact local authorities about safety procedures and regulations Plan for Emergency Services Have the telephone numbers for local emergency and medical facilities on hand Check that you wil...

Страница 32: ...nd See Classify Jobsite on page 33 Jobsite hazards could cause death or serious injury Use correct equipment and work methods Use and maintain proper safety equipment To help avoid injury Wear persona...

Страница 33: ...do not participate in the One Call service Have an experienced locating equipment operator sweep area within 20 6 m to each side of work path Verify previously marked line and cable locations Mark lo...

Страница 34: ...excavation Have gas shut off while work is in progress Have gas company test lines before returning them to service Crystalline Silica Quartz Dust Precautions Cutting drilling or working materials suc...

Страница 35: ...brake pins See Check Brake Operation on page 59 filters air oil hydraulic tracks pumps and motors hoses and valves signs guards and shields Accessories Fire Extinguisher If required mount a fire exti...

Страница 36: ...in handles toward center of mount plate to secure attachment to lift plate NOTICE Use only Ditch Witch approved attachments Attachments can change the stability and operating characteristics of the un...

Страница 37: ...id can cause injury or pierce skin and poison Before disconnecting a hydraulic line turn engine off and operate all controls to relieve pressure Lower block or support any raised component with a hois...

Страница 38: ...SK750 SK755 Operator s Manual Drive 38 CMW Drive Chapter Contents Start Unit 39 Drive 39 Shut Down 41...

Страница 39: ...ge 26 4 Adjust throttle as needed 5 See attachment operation manual for instructions regarding proper operation of attachments NOTICE If jump starting is required see Jump Start Unit on page 70 EMERGE...

Страница 40: ...ng performance are two absolute limits which must never be exceeded These maximums are stated below since they are design limits These design limits usually exceed the operating limits and must never...

Страница 41: ...1 Lower lift arms to ground 2 Move all controls to neutral position 3 Apply parking brake 4 Run engine at low idle for five minutes to cool 5 Turn ignition switch to STOP 6 Remove key NOTICE Failure t...

Страница 42: ...SK750 SK755 Operator s Manual Transport 42 CMW Transport Chapter Contents Lift 43 Points 43 Procedure 43 Haul 44 Load 44 Tie Down 45 Unload 46 Tow 47...

Страница 43: ...pecifications on page 74 or measure and weigh equipment before lifting Use one of the methods below Use two points nearest operator station Use three lift points as shown Crushing weight If load falls...

Страница 44: ...Ensure that all controls are in neutral position 10 Turn ignition switch to STOP 11 Tie down unit Crushing weight If load falls or moves it could kill or crush you Use proper procedures and equipment...

Страница 45: ...Down Points Tiedown points are identified by tiedown decals Securing to truck or trailer at other points is unsafe and can damage machinery Procedure Loop tiedowns around unit at tiedown points Make s...

Страница 46: ...d but keep it low 6 Adjust throttle to low speed and slowly back unit down trailer or ramps Crushing weight If load falls or moves it could kill or crush you Use proper procedures and equipment or sta...

Страница 47: ...r short distances at less than 1 mph 1 6 km h do not tow for more than 100 30 m use no more than 1 300 lb 5800 N of towing force open bypass valve on each pump section disengage parking brake Incorrec...

Страница 48: ...ee turns Return Unit to Normal Operation 1 Tighten bypass valves and tighten locknut to 15 18 ft lb 20 25 N m 2 Disengage parking brake 3 Unblock tracks IMPORTANT Open bypass valves in both front and...

Страница 49: ...Transport 49 SK750 SK755 Operator s Manual Tow CMW...

Страница 50: ...SK750 SK755 Operator s Manual Complete the Job 50 CMW Complete the Job Chapter Contents Rinse Equipment 51 Disconnect Attachment 51 Stow Tools 51...

Страница 51: ...area Disconnect Attachment 1 Lower attachment to the ground 2 Turn off engine 3 Disengage lock pins by turning handles away from center of attachment 4 Cycle attachment drive control and disconnect h...

Страница 52: ...r s Manual Service 52 CMW Service Chapter Contents Precautions 53 Overview 55 Recommended Lubricants Service Key 55 Engine Oil Temperature Chart 56 10 Hour 58 50 Hour 62 200 Hour 65 500 Hour 67 2000 H...

Страница 53: ...Learn to use equipment correctly To help avoid injury Unless otherwise instructed perform all service with engine off Refer to engine manufacturer s manual for engine maintenance instructions Before s...

Страница 54: ...on page 70 if jump starting is necessary Explosion possible Serious injury or equipment damage could occur Follow directions carefully NOTICE Disconnect battery to prevent damage to battery Do not tur...

Страница 55: ...ore frequently Item Description DEO Diesel engine oil meeting API service classification CF 4 or E1 96 and SAE viscosity recommended by engine manufacturer SAE 15W40 THF Tractor hydraulic fluid simila...

Страница 56: ...06 or any fully formulated ethylene glycol based low silicate heavy duty diesel engine coolant meeting ASTM specification D5345 prediluted or D4985 concentrate Before using any other kind of coolant c...

Страница 57: ...r Ditch Witch dealer or the engine manufacturer for more information IMPORTANT For machines operated in the U S The engine in this product is certified to operate on low sulfur diesel fuel LSD with a...

Страница 58: ...eck Engine Air Filter Service Indicator Check air filter service indicator shown at startup and every 10 hours and change filter as needed See Change Air Filter on page 69 Task Notes Check engine oil...

Страница 59: ...on sight glass 2 when engine is off cylinders are fully retracted and fluid is cool If low add THF at fill 1 Check Brake Operation Check brake operation at startup and every 10 hours or more often wh...

Страница 60: ...mp MPG into zerk until distance between track and straight edge 2 is 1 2 13 mm 4 Test Drive forward one track length and check tension again If tension is too loose repeat step 3 above If tension is t...

Страница 61: ...to relieve pressure Lower block or support any raised component with a hoist Cover connection with heavy cloth and loosen connector nut slightly to relieve residual pressure Catch all fluid in a cont...

Страница 62: ...ill 2 Task Notes Change engine oil and filter initial service Check fan belt tension and damage 1 4 1 3 7 9 mm Change hydraulic fluid filter initial Check fuel hose and clamp band Check radiator hydra...

Страница 63: ...mm when pushed at the long span Replace the belt when it is worn and sinks into the pulley groove Adjust Tension 1 Loosen two alternator bolts shown 2 Adjust position as needed 3 Tighten bolts 4 Check...

Страница 64: ...every 100 hours Keep battery and terminals clean and free of corrosion Add distilled water if liquid level is low Explosion possible Serious injury or equipment damage could occur Follow directions c...

Страница 65: ...Air Line Check the intake air line every 200 hours If the clamp is loose apply oil to the threads and retighten it If the hose appears cracked or worn replace it Task Notes Change engine oil and filt...

Страница 66: ...SK750 SK755 Operator s Manual Service 66 200 Hour CMW Change Hydraulic Filter Change hydraulic filter every 200 hours t35om019w eps...

Страница 67: ...l from cans replace filters more often The canister filter is located in the engine compartment The inline filter is located under the control console See parts manual or contact your Ditch Witch deal...

Страница 68: ...filter every 500 hours Change every 250 hours if jobsite temperature exceeds 100 F 38 C more than 50 of the time 1 Remove drain plug 3 2 Drain fluid and replace plug 3 Change filter See page 66 4 Add...

Страница 69: ...4 every third change of primary filter 3 or any time primary element has become damaged 1 Open air filter housing at latches 2 2 Remove primary element 3 3 Wipe inside of housing and end cup 2 4 Inser...

Страница 70: ...ible Serious injury or equipment damage could occur Follow directions carefully To help avoid injury Lead acid batteries vent explosive hydrogen gas when charging Do not smoke create sparks or use fla...

Страница 71: ...ump Start Procedure Engine Off 1 Park service vehicle close to disabled equipment but do not allow vehicles to touch 2 Engage parking brake in both vehicles 3 Turn the ignition switch to the OFF posit...

Страница 72: ...Attempt to start disabled vehicle 12 If engine starts operate at full throttle for a few minutes to build an electrical charge in the battery 13 Remove black negative cable clamp from the disabled eng...

Страница 73: ...Service 73 SK750 SK755 Operator s Manual As Needed CMW...

Страница 74: ...L Overall length of loader no attachment 86 in 2190 mm Overall length of machine with standard bucket 105 in 1670 mm L2 Wheelbase track length 43 in 1092 mm A2 Angle of departure 27 27 Ground clearanc...

Страница 75: ...35 mm Performance U S Metric Ground drive speed forward and reverse 4 7 mph 7 6 km h Ground pressure 7 180 mm tracks 4 8 psi 0 33 bar Ground pressure 9 230 mm tracks 3 8 psi 0 26 bar Tipping capacity...

Страница 76: ...s gross power rating per SAE J1955 23 1 hp 17 2 kW Estimated net power rating per SAE 1348 31 5 hp 23 5 kW Rated engine speed 3000 rpm 3000 rpm Hydraulic System U S Metric Auxiliary double gear pump F...

Страница 77: ...24 5 kW Estimated net power rating per SAE 1348 31 5 hp 23 5 kW Rated engine speed 3000 rpm 3000 rpm Maximum tilt angle fore and aft 30 30 Maximum tilt angle side to side 30 30 Exceeding these operat...

Страница 78: ...purchase Return damaged parts to dealer for inspection and warranty consideration if in warranty time frame Order genuine Ditch Witch replacement or repair parts from your authorized Ditch Witch deale...

Страница 79: ...ESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY IF THE PRODUCTS ARE PURCHASED FOR COMMERCIAL PURPOSES AS DEFINED BY THE UNIFORM COMMERCIAL CODE THEN THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE FA...

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Страница 82: ...SK750 SK755 Operator s Manual Service Record 82 CMW Service Record Service Performed Date Hours...

Страница 83: ...CMW Service Record 83 SK750 SK755 Operator s Manual Service Performed Date Hours...

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