MAT 1253226 - Caterpillar

You must read and understand the warnings and instructions contained in the Safety section of this manual before performing any operation or maintenance procedures.Hydraulic System
Service Screen and Filters
1. Remove the access cover from above the hydraulic tank. 2. Clean area thoroughly to keep dirt out of screen and filter covers and fill/vent cap.3. Relieve the internal pressure from the hydraulic tank by loosening the fill/vent cap. After the pressure is relieved, tighten the fill/vent cap.Clean the Screen
1. Remove bolts (1), washers (2) and cover (3). Do not allow spring (4) to fall into the tank.2. Remove spring (4) and screen (5).3. Wash screen in clean nonflammable solvent and allow to dry. Inspect and replace it if it is damaged. 4. Inspect O-ring seals (6) and (7) and replace them if they are worn or damaged.5. Perform Steps 1 and 2 in reverse order for installation procedure. During installation, make sure O-ring seals and spring are properly positioned.Change the Return Filter
1. Remove bolts (1), washers (2) and cover (3).2. Remove spring (4), valve (5) and element (6) from the tank.3. Inspect O-ring seal (7) and replace it if it is worn or damaged.4. Perform Steps 1 and 2 in reverse order for installation procedure.Change the Pilot Filter
1. Open the access door on the right side of the machine. 2. Clean the area to keep dirt out of the filter base.3. Remove the used element from filter base. This is a cartridge type element. It cannot be reused.4. Clean the filter base.5. Coat the seal of a new filter with clean hydraulic oil and install it in the filter base. Tighten the filter hand tight.6. Close the access door and drive the machine slowly for 10 to 15 minutes while moving each cylinder evenly through several cycles. 7. Return the machine to the position shown and check for oil leaks.8. Stop the engine. 9. Maintain the oil level in the low temperature range for a cold machine and in the high temperature range for a machine at normal operating temperature.10. Slowly loosen the fill/vent cap to relieve any pressure and remove it to add oil if necessary.11. Clean and install the fill/vent cap.Fuel System
Turn the disconnect switch OFF or disconnect the battery when changing fuel filter.Do not fill fuel filter with fuel before installing it. Contaminated fuel will cause accelerated wear to fuel system parts.
Open the engine hood.Clean Fuel Lift Pump Strainer and Sediment Chamber
1. Remove the cover and seal from top of fuel lift pump and remove gauze strainer. It may be necessary to remove heat shield (if equipped) between pump and engine.2. Clean the screen, seal and cover with a nonflammable solvent. Wipe sediment from lift pump body.3. Install screen after cleaning and assemble cover and seal. Install heat shield (if equipped).Change the Filter
1. Turn the drain valve on the bottom of filter (2) counterclockwise to open.2. Drain water and sediment into a suitable container. Always dispose of drained fluids and filters as established by local regulations.3.