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Maintenance Section
Front Axle Differential
Illustration 227 g01014856
1. Clean the area around the plugs. Remove the
following plugs for the front differential:
• Drain plug (3)
• Combined level plug and filler plug (4)
Allow the oil to drain into a suitable container.
2. Clean drain plug (3) and reinstall drain plug (3).
3. Add new 197-0017 Axle and Brake Oil Additive to
the differential housing through hole (4). Refer to
Operation and Maintenance Manual, "Capacities
(Refill)" for more detailed information.
4. Add new oil to the differential housing through filler
hole (4) until the oil is level with the threads for
plug (4). When you are filling the front axle with oil
you should allow time for the oil to drain through
the differential into the other side of the axle.
Ensure that the correct quantity of oil is added to
the axle in order to fill the differential and the axle
housing. Damage to the differential will result if this
procedure is not observed. Refer to Operator and
Maintenance Manual, "Lubricant Viscosities" for
the correct grade of oil.
Refer to Operation and Maintenance Manual,
"Capacities (Refill)" and the appropriate Service
Manual for more detailed lubricant information.
5. Clean combined level plug and filler plug (4).
Reinstall combined level plug and filler plug (4).
Differential Oil Level - Check
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, testing,
adjusting and repair of the product. Be prepared to collect
the fluid with suitable containers before opening any
compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Caterpillar
Dealer Service Tool Catalog" for tools and supplies
suitable to collect and contain fluids on Caterpillar
products.
Dispose of all fluids according to local regulations and
mandates.
Park the machine on level ground. Fully retract the
boom and fully lower the boom. Move the transmission
control to the NEUTRAL position and engage the
parking brake. Shut off the engine.
Rear Axle Differential
Illustration 228 g01014887
1. Clean the area around combined level and filler
plug (1) for the rear differential. Remove combined
level and filler plug (1) and check that the oil is
level with the hole for combined level and filler plug
(1).
2. If necessary, add oil through the same hole.
3. Clean combined level and filler plug (1) and install
combined level and filler plug (1).