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Case 1740 Troubleshooting
The
Case 1740 skid steer loader driveline system components: a 188 cu.in (3.1L) Case
G-188D 4-cylinder naturally aspirated liquid-cooled diesel engine with a rated
power of 40 hp (29.6 kW), and variable speed sheave transmission. The hydraulic
system has a pump with a rated capacity of 18 gal/min (68.2 l/min). The system
pressure is 2600 psi (180 bar). The Case 1740 is equipped with a
radial-lift boom, 80H drive chains, and 7.00x15 standard tires. The skid
steer loader has a maximum lift height of 115.5" (2935 mm) to hinge pin and dump
height of 86.5" (2195 mm). The rated operating capacity is 1700 lbs (770 kg),
and tipping load is 2080 lbs (945 kg).
| Engine Troubleshooting |
Engine starts hard or will not start
Air in fuel tank - Bleed fuel tank.
Fuel filter plugged - Clean or change the filter.
Faulty or dirty injection nozzles - Service or change injection nozzles.
Water or dirt in fuel system - Drain, flush, and service the system.
Excessive valve clearance - Correct valve clearance.
Faulty fuel injection pump - Install a new fuel pump or repair.
Engine starts but stalls immediately
Plugged air cleaner - Install new air cleaner element.
Fuel filter element clogging - Clean or replace the filter.
Poor fuel injection pump tightness - Look for any leaks of fuel pump, tighten it fast.
Dirty or defective injectors - Change or clean fuel injectors.
Fuel injection pump is broken - Repair or install a new fuel pump.
Engine shuts off suddenly during operation
Engine not warmed up - Warm up engine as required.
Fuel filter is plugged - Service or replace the filter.
Air trapped in fuel system - Bleed air.
Dirty or damaged injection nozzles - Install a new kit of correctly balanced nozzles.
Fuel injection pump timing is wrong - Adjust according to specifications.
Engine stalls when idling
Too low idle RPM - Test and adjust.
Faulty fuel injection pump - Change or repair the pump.
Clogged or defective injectors - Change or clean fuel injectors.
Valve clearance is not correct - Adjust valve clearance according to specifications.
Diesel engine is losing power
Air filter is dirty - Clean or change filter.
Faulty fuel injection nozzles - Service or change injection nozzles.
Improper fuel injection pressure - Adjust pressure to proper level.
Excessive valve clearance - Adjust to proper valve clearance.
Incorrectly adjusted low idle speed - Correct the settings.
Dirty fuel lines or hoses - Fuel lines and hoses need to be cleaned.
Cylinder head gasket is defective - Install new cylinder head gasket.
Worn or broken piston rings - Install new piston rings.
Engine is overheated
Lack of engine coolant - Add coolant fluid and inspect the cooling system for leaks.
Lack of engine oil - Check oil level and add oil as required.
Defective radiator cap or clogged radiator core - Install new cap or clean radiator.
Fan belt is broken or worn - Change as required.
Engine is overloaded - Load reducing required.
Low oil pressure
Engine oil insufficient - Check oil level and add oil as required.
Engine oil filter is plugged - Clean or replace engine oil filter element.
Incorrect oil viscosity - Drain crankcase and refill with correct oil.
Excessive crankshaft bearing oil clearance - Bearing needs to be changed.
Oil pump malfunction - Repair or change.
Engine knocks or noises
Engine oil level is low - Add oil to the engine crankcase.
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Fuel injection pump timing is wrong - Set the fuel pump timing correctly.
Wrong adjustment of low idle speed - Normalize low idle speed.
Defective fuel injectors - Change or clean fuel injectors.
Connecting rod misalignment or failure - Align or replace connecting rod.
Pistons are broken or worn - Install new pistons.
| Drive System Troubleshooting |
Drive system doesn't work in either direction
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.
Drive chain is worn - Inspect drive chain and replace defective components.
Hydraulic filter or suction line is dirty - Check, clean, or change if necessary.
Hand or foot controls failure - Repair or change.
Defective transmission components - Change or repair faulty component.
Low power
Hydraulic oil filter is plugged - Check, clean, or replace as required.
Worn or faulty transmission components - Inspect and change faulty parts.
Input drive shaft failure - Service or change faulty drive shaft.
Air in hydraulic system - Air bleeding is required.
Drive system overheats
Hydraulic oil level is low - Need to add oil.
Hydraulic fluid filter is dirty - Change or service hydraulic filter.
Defective transmission components - Repair or replace faulty component.
Overloaded drive system - Reduce the load.
Drive system is excessively noisy
Improper oil viscosity - Use oil of proper viscosity.
Air in hydraulic system - Bleed air from system.
Worn or faulty transmission components - Repair or change faulty component.
Worn or defective mechanical parts of drive system - Check drive system and change faulty parts.
| Hydraulics Troubleshooting |
Hydraulic system overheats
Incorrect hydraulic pressure setting - Set pressure correctly.
Main relief valve improper adjustment or failure - Adjust or change relief valve.
Hydraulic fluid is contaminated - Change hydraulic fluid.
Hydraulic fluid level is low - Add fluid to the hydraulic system.
Hydraulic pump is faulty - Install new pump or repair it.
Boom cannot be lowered or raised
Defective lift controls - Inspect and repair if necessary.
Hydraulic pump is broken - Repair or change pump if required.
Defective hydraulic control valve - Repair or change hydraulic valve.
Hydraulic cylinder is faulty - Replace or repair boom cylinder.
Hydraulic fluid is insufficient - Add fluid as required.
Bucket does not tilt
Faulty bucket tilt controls - Replace or repair.
Hydraulic pump not working - Repair or change pump if required.
Faulty hydraulic control valve - Install a new hydraulic valve or repair it.
Bucket cylinder failure - Install a new cylinder or repair it.
Hydraulic fluid is insufficient - Add fluid as required.
Bucket or lift arm is moving slowly
Hydraulic pump is worn - Test pump flow rate and replace pump if required.
Oil leaks from hydraulic cylinder - Cylinder seals need to be replaced.
Hydraulic oil level low - Check and refill the hydraulic oil.
Damaged or incorrect adjusted hydraulic control valve - Repair or set properly.
Hydraulic pressure is low - Correct adjustment is required.
Lift arm or bucket movements are jerky
Hydraulic system is leaking air - Bleed air from hydraulic system.
Hydraulic oil filter element clogging - Service or replace the hydraulic filter.
Dirty hydraulic oil - Change hydraulic oil.
Cylinder tube or rod is scored - Change failed component.
Hydraulic pump makes excessive noise
Hydraulic leakage or low oil level - Correct hydraulic leaks or top up oil as needed.
Plugged hydraulic filter - Change or clean oil filter.
Suction line is dirty - Suction line must be serviced.
Air in hydraulic pump - Bleed air.
Pump parts are damaged - Rebuild or install new pump.
| Electrical Troubleshooting |
Battery is not charging
Loose or corroded electrical wiring connections - Tighten or service cable connections.
Defective battery terminal clamps - Replace terminal clamps.
Dead cell in battery - Install a new battery.
Loose or damaged belt - Adjust belt tension or replace belt.
Starter turning slow
Battery power is low - Battery is drained, recharge it.
Battery is not holding charge - Service battery or replace it.
Disconnected wiring or bad battery terminals - Connect cables properly or replace terminals.
Starter motor is not working
Battery is drained or worn - Battery needs to be recharged or replaced.
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required.
Low battery output voltage - Battery needs to be recharged.
Starter motor is faulty - Starter should be changed.
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| SKID STEER LOADERS SPECIFICATIONS |