CYLINDER AS 6J9888 - 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
Change Filter Elements
The machine must be level. The bowl must be lowered, the ejector to the rear, the parking brake engaged and the engine stopped. 1. Remove the hydraulic tank fill cap slowly to relieve any pressure in the tank. 2. Remove air purge screw (1) and drain plug (2) from the filter cover and drain the hydraulic tank fluid level down to the bottom of the drain plug opening. Install the plug. 3. Remove the four filter cover bolts.4. Remove the filter cover from the filter housing. 5. Remove the two used elements and the screen. Wash the screen and cover in clean, nonflammable solvent. Install the screen and two new elements. 6. Inspect the cover seal. Use a new seal if the used one is damaged. Coat the seal with clean hydraulic oil. Install the cover carefully to prevent damage. Tighten the bolts evenly. 7. Maintain the hydraulic oil level between the ADD and FULL marks on the sight gauge. Install the cap.8. Start the engine and operate it at low idle to fill the filters.9. Check for leaks.10. Stop the engine and add oil if necessary.Fuel System
Clean Primary and Change Secondary
Clean Primary (Tractor)
1. With the engine stopped, turn the fuel line shutoff valve to the off position. 2. Loosen the bolt at the top of the base. Remove the case and element.3. Wash the case and the element in clean, nonflammable solvent. 4. Clean the filter base. Replace the gasket if it is damaged.5. Install the filter element and the case.6. Turn the fuel line shutoff valve to the on position.Change Secondary (Tractor)
1. Remove the used filter with a strap-type wrench and discard it.2. Clean the filter base. Make sure all of the used seal is removed.3. Coat the seal of a new filter with clean diesel fuel.
Do not overtighten the filter.
4. Install the new filter by hand. When the seal contacts the filter base, tighten 3/4 more turn. Use the rotation index marks on the filter as a guide for proper tightening.5. Prime the fuel system. (See "Priming the Fuel System.")6. Start the engine and inspect for leaks.Clean Primary (Scraper)
1. With engine stopped, turn the fuel line shutoff valve to the off position.2. Loosen the bolt at the top of the base. Remove the case and element.3. Wash the case and the element in clean, nonflammable solvent.4. Clean the filter base. Replace the gasket if it is damaged.5. Install the filter element and the case.6. Turn the fuel line shutoff valve to the on position.Priming the Fuel System
1. Turn the disconnect switch on, to activate the electric fuel pump and to pump fuel forward to the tractor engine.2. If removing air from the fuel injection lines is necessary, loosen the nuts on the fuel injection lines.3. Move the accelerator to low idle position (out of stopped detent). Crank the