650 & 660 TRACTOR-SCRAPER When Required Caterpillar

(43)Air Intake System

Service elements when the RED indicator piston locks in the visible position.

Never service air cleaner elements with engine running.

Servicing Primary Elements

1. Remove covers and primary elements.

2. Clean inside body.

3. Clean covers.

4. Clean and inspect elements. (See page 25.)

5. Install clean elements and covers.

If indicator shows red shortly after cleaning and primary elements have been cleaned 6 to 8 times, change elements.

If new primary elements were used and indicator shows red, clean secondary elements.

Servicing Secondary Elements

1. Remove covers and primary elements.

2. Remove secondary elements.

3 Cover air inlet openings.

4. Clean and inspect elements. Use new gaskets.

5. Uncover air inlet openings and install secondary elements. Tighten nuts to 20 ± 5 lb. ft. (2,8 ± 0,7 mkg).

6. Install primary elements and covers.

If indicator shows RED shortly after cleaning, change secondary elements.

Cleaning Air Cleaner Elements

Pressure Air - 100 PSI (8 kg/cm²) Maximum

1. Direct air inside element along length of pleats.

2. Direct air outside along length of pleats. Direct air inside along length of pleats.

3. Check element.

Water-40 PSI (3 kg/cm²) Maximum

1. Direct water inside element along length of pleats.

2. Direct water outside along length of pleats. Rinse element.

3. Air dry thoroughly. Check element.

Detergent

1. Wash in warm water and non-sudsing household detergent.

2. Rinse with clean water (40 PSI (3 kg/cm²) maximum). See above.

3. Air dry thoroughly. Check element.

Checking Element

1. Insert light inside clean and dry element. Check and discard element if pinholes or tears are found.

2. Wrap and store good elements in a clean dry place.

Do not clean elements by bumping or tapping.

Have spare elements on hand to use while cleaning used elements.

Do not use elements with damaged pleats, gaskets or seals.

(44)Fuel System Filters

Primary Fuel Filter - Clean When Fuel Pressure Gauge Registers Out

1. Remove cover.

2. Remove element and wash in clean kerosene.

3. Dry with pressure air and install.

Final Fuel Filter - Change Elements

1. Remove used filters.

2. Clean gasket surfaces and lubricate filter gasket with diesel fuel.

3. Install new filters and hand tighten. Prime fuel system and start engine. Check for leaks.

Priming The Fuel System

1. Open filter housing vent.

2. Open injection pump housing vent.

3. Turn to unlock pump. Operate pump until a steady stream of fuel flows from vent.

4. Close filter housing vent. Start engine.

5. Bleed for 30 seconds. Close injection pump housing vent.

(45)Cooling System

Whenever draining and refilling the cooling system, always recheck the coolant level when the engine reaches normal operating temperature. Maintain coolant level to within 1/2 inch (1 cm) of bottom of fill pipe.

Use clean water that is low in scale forming minerals - not softened water.

Never add coolant to overheated engine. Allow engines to cool first.

Add AVSpare Rust Inhibitor to coolant except when using permanent-type antifreeze containing rust inhibitors.

Check specific gravity of antifreeze solution frequently in cold weather to assure adequate protection.

Cleaning the Cooling System

1. Run engine for 5 minutes. Park machine on level ground and stop engine.

2. Turn filler cap slowly to relieve pressure, then remove caps.

3. Open drain valve and drain coolant.

4. Close drain valve and fill with cleaning solution. ⁽¹⁾

5. Start and run engine for 1/2hour. Stop engine and drain cleaning solution.

6. Flush system with clean water until draining water is clear.

7. Close drain valve and fill system with neutralizing solution. ⁽²⁾

8. Start and run engine for 10 minutes. Stop engine and open drain valve.

9. Flush system with clean water.

10. Close drain valve and add coolant to proper level.

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⁽¹⁾2 lb. Sodium Bisulfate (NaHSO₄) per 10 gal. water (25 grams per liter).

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⁽²⁾1/2 lb. Sodium Carbonate Crystals (Na₂CO₃, 10 H₂O) per 10 gal. water (6 grams per liter).

NOTE: Most commercial cooling system cleaners may be used.

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Use all cleaning solutions with care.

(46)Ejector Rollers

Carrier Rollers

Loosen clamp bolt. Turn adjusting nut. Tighten clamp bolt. Rollers are properly adjusted when ejector operates without binding or rubbing.

Guide Rollers

Loosen clamp bolt. Turn adjusting nut. Tighten clamp bolt. Rollers are properly adjusted when ejector operates without binding or rubbing.

(47)Cutting Edges

1. Raise and block bowl and apron. Stop engine.

2. Remove bolts.

3. Remove section and clean contact surfaces.

4. Use opposite edge if not worn. If both edges are worn, change section.

5. Install bolts and tighten to 900 ± 50 lb ft (124,5 ± 7 mkg).

6. Start engine and remove blocks.

7. After a few hours of operation, retighten bolts.

(48)Routing Bits

1. Raise and block bowl and apron. Stop engine.

2. Remove bolts.

3. Remove routing bit and clean contact surfaces.

4. Use other end of bit if not worn.

5. Install bolts and tighten.

6. Start engine and remove blocks.

7. After a few hours of operation, retighten bolts.