COUPLING AS- 3289102 - 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 Oil
Change the Oil
Operate the machine long enough to warm the oil.The machine should be level. All equipment should be lowered to the ground with a slight down pressure. The parking brake should be engaged, and the engine stopped. 1. Slowly remove the hydraulic system oil tank fill cap. 2. Remove the drain plug located in the bottom of the hydraulic tank. Drain the oil into a suitable container.3. Change the hydraulic system filter. See Hydraulic System in the Every 500 Service Hours or 3 Months Section.4. Remove the fill screen. Wash in clean, nonflammable solvent. Allow to dry.5. Clean and install the drain plug.6. Install the fill screen.7. Fill the hydraulic system oil tank. See Lubricant Viscosities and Refill Capacities.8. Inspect the fill cap gasket. Replace the gasket if damaged.9. Install the oil fill cap.10. Start and run the engine for a few minutes. 11. Maintain the oil level above the ADD COLD mark in the sight gauge (1). Add oil through the fill tube (2), if necessary. The oil must be free of bubbles. If bubbles are present in the oil, air is entering the hydraulic system. Inspect the suction line hoses and clamps.12. Stop the engine.13. If necessary, tighten any loose clamps and connections. Replace any damaged hoses.Tandem Drive Housing Oil
Change the Oil
1. Remove the drain plug (1) and the level/fill plug (2). Allow the oil to drain into a suitable container.2. Clean and install the drain plug.3. Fill the tandem drive housing with oil. See Lubricant Viscosities and Refill Capacities.4. Install the level/fill plug.5. Start the engine and operate the machine for a few minutes. Check for leaks. 6. Stop the engine. Remove the level/fill plug and check the oil level. Maintain the oil level to the bottom of the fill opening. Add oil if necessary.Circle Drive Housing
Change the Oil
1. Remove the drain plug (1) and the level/fill plug (2). Allow the oil to drain into a suitable container.2. Clean and install the drain plug.3. Fill the circle drive housing with oil. See Lubricant Viscosities and Refill Capacities.4. Install the level/fill plug.5. Start the engine and operate the machine for a few minutes. Check for leaks.6. Stop the engine. Remove the level/fill plug and check the oil level. Maintain the oil level to the bottom of the fill opening. Add oil if necessary.Engine Valve Lash
Adjust
Have a qualified service person to check and adjust the fuel injector timing. Special tools and training are required.Refer to the Service Manual for the complete procedure. The correct fuel timing specification is given on the Engine Information Plate. Fuel timing specification may be different for engines with different applications and/or power ratings.Refer to the Service Manual or your Caterpillar dealer for the complete adjustment procedure.Engine Valve Rotators
Check
When inspecting the valve rotators, protective glasses or face shield and protective clothing must be worn, to prevent