PUMP GP-PISTON 1306225 - 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.Differential
Change Oil
1. Remove drain plug (1) located at the bottom of differential case. Allow the oil to drain. 2. Remove drain plug (2) at the bottom of the flange on the differential gearbox. Allow oil to drain. Drain oil into a suitable container. Always dispose of used oil as established by local regulations.3. Clean and install both drain plugs.4. Remove differential gearbox fill/check plug (3). Remove differential fill plug (4) and check plug (5) located on the right side of the flange.5. Add oil to differential case and gearbox. Maintain oil level to the bottom of plugs (3) and (5). Refer to Lubricant Viscosities and Refill Capacities.6. Clean and install plugs (3), (4) and (5).Hydraulic Oil System
Change Oil
Take extreme care to insure the cleanliness of hydraulic oil. Keep hydraulic oil clean to extend component life and assure maximum performance.
1. Connect a hose to the hydraulic oil tank drain valve located at the bottom of the hydraulic oil tank.2. Open the hydraulic oil tank drain valve. Allow the oil to drain. Drain oil into a suitable container. Always dispose of used oil as established by local regulations.3. Close the hydraulic oil tank drain valve and remove the hose. 4. Remove the hydraulic oil tank cap and strainer.5. Wash the cap and strainer in clean, nonflammable solvent.6. Install the strainer.7. Refill the hydraulic oil tank with clean, filtered hydraulic oil. Refer to Lubricant Viscosities and Refill Capacities.8. Install the hydraulic oil tank cap. 9. Observe the hydraulic oil level when the oil is warm. Maintain oil level to the level mark on the decal near sight gauge.Hydraulic Oil Tank Breather
Replace Breather
1. Tilt the platform forward. Refer to Platform Tilting in the When Required section. 2. Remove the hydraulic oil tank breather.3. Install a new hydraulic oil tank breather.4. Lower the platform.Engine Valve Lash and Injector Fuel Timing
Check/Adjust
Refer to the Service Manual for the complete procedure to perform valve lash check and/or adjustment. Be sure to have a qualified mechanic check and/or adjust injector fuel timing. Special tools and training are required.Refer to the Service Manual for the complete procedure to perform this maintenance. The correct fuel timing specification is given on the Engine Information Plate. Fuel timing specifications may be different for different engine applications and/or power ratings.