CAT CAT Bulldozer D6 D6

If valve clearance is within ± .003 inch (0.07 mm) of the clearance given, adjustment is not required. If clearance is not within these limits, adjust the valves.

Adjust valves with the engine stopped and cold.

2. Clean the base of the valve cover to prevent dirt from getting into valve mechanism.

4. Remove the flywheel housing timing plug.

A flywheel Engine Turning Tool 5P7307, is available from your Caterpillar dealer. Consult your Caterpillar dealer for proper instructions for use of the tool.

Check coolant level ONLY when engine is stopped and radiator cap is cool enough to touch with your hand.

Remove filler cap slowly to relieve pressure.

Remove the engine block drain plug.

Install drain plugs. Fill system with a commercially available cleaning solution or 1 kilogram (2 lb.) Sodium Bisulfate (NaHSO.) per 40 liters (10 U.S. gallons) water.

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

Flush system with clean water until draining water is clean. Do not run engine while flushing.

Install all drain plugs. Fill system with neutralizing solution or 250 grams (1/2 lb.) Sodium Carbonate Crystals (Na,CO.H2O) per 40 liters (10 U.S. gallons) water.

Lubricate 2 fittings; 1 fitting on each side of the clutch housing.

Lubricate 1 fitting at the end of shaft.

Lubricate 1 fitting on top-rear of housing.;

1. Remove the retaining wing nut from the top of the dust collector cup.

2. Remove and clean the dust collector cup.

3. Install the dust collector cup.

Batteries-Check Electrolyte Level

WARNING: Do not smoke when observing battery electrolyte level. Batteries give off fumes that can explode.

WARNING: Electrolyte is an acid and can cause personal injury if it contacts skin or eyes.

1. Clean the tops of the batteries. Keep the terminals clean and covered with a light coat of grease.

2. Remove all fill caps. Observe the electrolyte level.

The shutoff controls must be checked periodically so that they will function properly, when required. To prevent damage to the engine while making the required test, only authorized personnel should perform the checks. Contact your Caterpillar dealer.

Sign off on the 1000 Hourly Engine Maintenance