657 WHEEL TRACTOR-SCRAPER Every 125 Service Hours Or 2 Weeks Caterpillar

(21)Scraper Engine Crankcase

Machine level, scraper lowered, parking brake set, oil warm and engine stopped.

1. Remove crankcase drain plug.

2. Open drain valve and drain oil.

3. Remove filter base drain plug. Allow housings to drain.

4. Remove covers and used elements. Clean inside of housings.

5. Clean covers and inspect seals. Install new seals if necessary.

6. Install new elements. Install covers. Tighten covers to 50 ± 10 lb. ft. (6,9 ± 1.5 mkg).

7. Clean and install filter base drain plug.

8. Close crankcase drain valve.

9. Clean and install drain plug.

10. Fill crankcase. See REFILL CAPACITIES.

11. Start engine to fill filter housings. Check for leaks. Stop engine and check oil level.

(22)Tractor Engine Crankcase

Machine level, scraper lowered, parking brake set, oil warm and engine stopped.

1. Remove crankcase drain plug.

2. Open drain valve and allow oil to drain.

3. Close crankcase drain valve.

4. Clean and install crankcase drain plug.

5. Fill crankcase. See REFILL CAPACITIES.

6. Start engine and run at low idle to check for leaks.

7. Stop engine. Check oil level.

Cartridge Type Engine Oil Filters

1. Open filter base drain valve.

2. Remove 3 filter covers and elements. Clean covers and housings.

3. Check cover seals and install new seals if necessary.

4. Install new elements. Install covers and tighten to (50 ± 10 lbs. ft. (6,9 ± 1,5 mkg).

5. Close filter base drain valve.

6. Start engine and run at low idle to fill filters. Check for leaks.

7. Stop engine. Check oil level. Add oil as necessary.