Every 6 months ............................................................. 5

____________________________________________________ Maintenance

hydraulic oil tank

Fig. 57: Hydraulic tank oil level Every 6 months

Change the hydraulic fluid in the feeder breaker oil tank (Fig. 57).

 Clean all dirt and debris from around the fill cap and drain plug.

 Remove the drain plug and allow the oil tank to completely drain.

 Clean and reinstall drain plug.

 Remove the fill cap and pour 20 gallons (76 L) of oil (Spec. 100-1) through the fill cap strainer to avoid cavitating the pumps with the power fill unit.

CAUTION! The oil tank must contain a minimum of 20 gallons ( 76 liters) of oil to operate the power fill function. This is to ensure that the hydraulic pumps are not run dry, causing severe damage to the pump.

 Add oil Spec 100-1 as required via the power fill system until fluid is visible in sight glass.

 Install fill cap.

 Start the machine and allow the hydraulic pump to run in order to purge air from the system.

 Shut down the machine and recheck the oil level. Add oil if necessary.

Power fill ball valve

Breather vent

Sight glass

Drain plug (under tank)

Maintenance _____________________________________________________

tram reducer Change oil in the tram reducer (Fig. 58).

 Clean all dirt and debris from and around the level and fill plugs.

 Rotate reducer until drain plug is at the 6 o’clock position and remove drain plug and allow the oil to completely drain.

 Clean and reinstall drain plug.

 Rotate reducer until plugs are at the 12 o’clock and 3 o’clock positions.

 Add oil (80W-90) through the fill hole until fluid begins to flow from the check plug.

 When filling the reducer, allow enough time for all cavities inside the reducer to fill.

 Install level and fill plugs.

 Do not overfill reducer.

Fig. 58: Tram reducer oil change

Fill plug

Check plug

____________________________________________________ Maintenance

breaker power unit torque limiter

Inspect the breaker power unit torque limiter clutch for wear. The measurement shown in Fig. 59 should be 3.55 inches for a new torque limiter. When the measurement reaches 3.46 inches, rebuild using kit part number 622432 or replace the entire torque limiter (see the Cat® parts book for your machine for torque limiter part number).

Fig. 59: Torque limiter wear check