4. MAINTENANCE 2 Hydraulic/Hydrostatic 2.1 Hydraulic Oil Filter: Change the hydraulic filter now and every 150 hours after the initial change. Lubricate the filter cartridge seal with system fluid. 3.6 Axle Seal: Inspect axle seal area. Clean area of debris build up and visually check for seal damage, replace as required. (NOTE: For track loaders this will be done at 300 hours). 2. 2 Hydraulic Oil Level: If oil is visible in the oil level sight glass the level satisfactory. If additional oil is required use only 10W30 API classification SE/CD oil. Fill to the top or maximum check point. 4 Controls and Safety Equipment 4.1 Control Levers, Operation and Linkage:
Check that the steering levers operate freely without binding, they return to neutral when released and the machine travels in a straight line with both levers in forward position. Lubricate linkage with a silicone based lubricant. 2.3 Hoses and Pipes: Make a visual inspection of all hydraulic lines and fittings for leaks. Check that steel lines do not touch one another. 4.2 Hydraulic Controls, Operation and Linkage: Check that the hydraulic controls, foot pedals or hand controls operate freely without binding. Before leaving the operator seat, ensure the controls are locked. 2.4 Cylinders: Inspect cylinders for leaks. Extend cylinders and check for rod damage. Seat Bar Switch Check:
Raise the seat bar and check that the hydraulic controls are locked in neutral. Seat Belt Switch Check: Unbuckle the seat belt and check that the hydraulic controls are locked in neutral. 2.5 Hydraulic Functions: Check that the following operate properly: control valve float position, auxiliary hydraulics, pedals and hydraulic cylinders. Seat Switch Check: With the seat bar down and the seat belt connected loosely around you, raise your weight off the seat and check that the controls are locked in neutral. 2.6 Pumps & Motors, Leakage: Inspect pumps and motors for leaks. If the safety controls are malfunctioning or require adjustment, consult your Hyundai Equipment Dealer for service.
Lubricate linkage with a silicone based lubricant. 2.7 Oil Cooler: Inspect the oil cooler for leaks, fin damage or clogged with dirt. If necessary clean fins with compressed air. 3 Final Drive 4.3 Engine Throttle Control: Check that the throttle control operates freely without binding or slackening off due to vibration. 3.1 Oil Level: Check lubricating oil level. If necessary add 10W30 API classification SJ oil. 4. 4 Parking Brake: Check that the parking brake engages and completely disengages. The park brake automatically engages with seat bar up. 3.2 Drive Chain Condition (Wheel Loaders): Check drive chains for any sign of wear or damage.
Check lubrication oil in housing for signs of contamination. 4. 5 Lift Arm Supports: Check that the lift arm supports operate without binding. 3.3 Drive Chain Condition (Track Loaders): 3.4 Hydrostatic Motor Mounting Bolts (Wheel Loaders): Check chain and sprocket condition every 300 hours. NOTE: Ensure the lift arm supports are fully retracted before raising or lowering the lift arms. Check torque 85 - 90 ft. lbs. (115 - 122 Nm) 3.5 Hydrostatic Motor Mounting Bolts (Track Loaders): To avoid personal injury: never repair or tighten hydraulic hoses or fittings with the engine running or the system under pressure. Tracks are pretensioned and do not require tension adjustment.
WARNING 3.5 Bearing End Play (Wheel Loaders): Check the axle bearings for loss of bearing pre-load. If necessary, adjust the bearings for zero end play. 44