HOUSING ASSEM. 1P9968 - Caterpillar

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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Park the machine on level ground. Lower the implement to the ground with a slight downward pressure. Engage the parking brake and stop the engine.
Illustration 1 g03274736
(1) Hydraulic tank breaker relief valve
(2) Access door
Open access door (2) to the engine air cleaner compartment on the right-hand side of the machine. Hydraulic tank breaker relief valve (1) is located on the top of the hydraulic tank forward of the engine air cleaner housing. Press hydraulic tank breaker relief valve in order to relieve any tank pressure.
Remove the access plate that is located forward of the rear axle on the left-hand side of the machine.
Illustration 2 g03377825
(3) Steering and implement pilot hydraulic system oil filter
Remove steering and implement pilot hydraulic system oil filter element housing (3) by loosening the housing with a suitable wrench at the bottom of the filter housing. A strap type wrench may also be used to loosen the filter housing.
Dispose of the used oil filter element contained in the oil filter element housing properly.
Note how the oil seals at the top of the oil filter element housing are arranged. Remove the used oil seals from the groove at the top of the oil filter element housing and dispose of the used oil seals properly.
Wash the oil filter element housing in clean nonflammable solvent. Dry the housing thoroughly.
New oil seals for the oil filter element housing are supplied with the new oil filter element. Install the new oil seals in the groove at the top of the oil filter element housing in the proper arrangement. The proper arrangement of the oil seals was noted in step 6 above.
Clean the oil filter mounting base. Make sure that none of the material from the used oil seals remains inside the filter mounting base.
Place the new oil filter element in the oil filter element housing. Apply a thin coat of hydraulic oil to the new oil seals that were installed on the oil filter element housing.
Position the oil filter element housing on the oil filter base and begin to tighten the oil filter element housing by hand. Carefully continue to tighten the oil filter element housing with a wrench until rotation of the housing stops. Do not overtighten.
After rotation of the oil filter element housing has stopped when being tightened with a wrench, loosen the oil filter element housing 1/4 turn. Installation of the oil filter element housing is now complete.
Start the engine and run the engine at low idle. Inspect the hydraulic system for leaks.
Install the access plate that was removed in step 3 above.
Check the level of the hydraulic oil.