215B LC AND 215B SA TRACK-TYPE EXCAVATORS Every 500 Service Hours or 3 Months Caterpillar

Remove the fill cap only when the engine is stopped, and the cap is cool enough to touch with your bare hand. Remove the fill cap slowly to relieve pressure.

Main Filter

1. Open the right side front access door.

2. Remove the hydraulic tank cap slowly to relieve pressure.

3. Open the left front access door. Remove the cap from the hydraulic filter drain valve.

4. Turn the valve into the housing and allow the oil to drain. Open the bleed screw on top of housing for faster draining.

5. Loosen the filter cover bolt. Remove the cover, screen and elements as a unit.

6. Remove the cotter pin which holds the elements and the screen to the cover.

7. Discard the used filter elements.

8. Wash the cover and screen in clean, nonflammable solvent. Allow the parts to dry.

9. Assemble the clean screen and two new filter elements to the cover. Install the cotter pin.

10. Inspect the cover seal. Replace the seal if it is damaged.

11. Close the bleed screw. Close the drain valve and install the cap.

12. Install the cover carefully to avoid seal damage.

Tighten the bolt to 81 ± 5 N·m (60 ± 4 lb ft).

Pump Case Drain Filter

1. Remove the used element and seal from filter base.

2. Clean the filter base.

3. Lightly oil a new seal with clean hydraulic oil and install it in the filter base.

4. Install a new filter by hand. When the filter element contacts the seal, tighten 3/4turn more.

Pilot System Filter

1. Open the right side rear access door.

2. Remove the oil drain plug at the base of the filter housing. Allow the oil to drain.

3. Loosen the bolt on top of the cover. Remove the cover assembly.

4. Remove the used filter element and clean the filter housing.

5. Inspect the cover seal. Use a new seal if the used one is damaged. Wash the cover in clean, nonflammable solvent.

6. Clean and install the filter housing drain plug.

7. Install a new filter element in the housing.

8. Fill the housing with clean hydraulic oil.

9. Install the cover assembly and tighten the bolt to 60 ± 7 N·m (43 ± 5 lb ft).

10. Start the engine and operate it a few minutes. Inspect for leaks. Test the control functions for proper operation.

11. Position the backhoe linkage with the stick cylinder fully extended and the bucket flat on the ground. The machine must be level.

Position the clamshell machine on level ground with the stick cylinder fully extended, and the bucket in the open position on the ground.

12. Observe the oil level. Maintain the level to the FULL mark on the sight glass. Close and secure the access doors.

Fuel Tank

Wash the Cap and Strainer

1. Open the fuel cap access door.

2. Remove the cap.

3. Replace the cap if the gasket is damaged.

4. Remove the strainer from the fill opening.

5. Wash the strainer in clean, nonflammable solvent.

6. Install the strainer.

7. Install the tank cap.

8. Close the cover.

Fuel System

Change Fuel Filters

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Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire.

Turn the disconnect switch OFF or disconnect the battery when changing fuel filters.

Primary Element

1. Open the right rear access door.

2. Loosen the bolt on the filter base.

3. Remove the case and element.

4. Wash the parts in clean, nonflammable solvent. Shake the element and allow the parts to dry.

5. Clean the filter base. Replace the seal if it is damaged.

6. Install the filter element and case.

Secondary Element

1. Remove the secondary filter and discard it.

2. Clean the filter base. Make sure all of the old filter seal is removed.

3. Coat the seal of a new filter with clean diesel fuel.

4. Install the new filter by hand. When the seal contacts the base, tighten 3/4 turn more.

Do not overtighten the filter. 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. Check for leaks. If the engine does not start, prime the fuel system.

7. Close the access door.

Priming the Fuel System Filters and Pump Housing

1. Open the bleed valve on the pump housing.

2. Unscrew the hand priming pump plunger until it can be pulled out by hand.

3. Move the plunger in and out until fuel flows, free of air bubbles, from the bleed valve.

4. Close the bleed valve.

5. Push the plunger in and tighten by hand.

6. Start the engine and check for leaks.

Injection Pumps and Lines

The injection pumps and high pressure lines must be primed if the engine will not start, or runs rough, after priming the filters and pump housing.

Each injection pump has a reverse flow check valve. These cannot be opened with hand priming pump pressure. Use the following procedure to prime the injection pumps and lines.

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NOTICE

The fuel injection nozzles can be permanently damaged by twisting if only one wrench is used to loosen or tighten the fuel line nuts. Use one wrench to hold the nozzle and another to loosen the nut.