Caterpillar Engine 3304

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

1. Measure oil level. Oil should be between the FULL and ADD marks on the "Running" side of the dipstick.

Inspect the air cleaner indicator. If the red piston is locked in the raised position, service the air cleaner.

CAUTION: The engine should never be allowed to run with the water level in the element more than 1/2 full or engine damage may result.

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.;

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.

1. Check the belts for excessive wear, fraying and cracking.

When belt replacement is necessary, belts must be replaced in complete matched sets. Never replace only one belt. The new belt will carry all the load and fail rapidly.

2. Apply a 110 N (25 pound) force perpendicular to the belt, midway between the driving and driven pulley. Measure the belt deflection.

Proper belt deflection is 14 to 20 mm (9/16 to 13/16"). Adjust the belt tension as required.

1. Loosen the anchor bolt in the slotted bracket.

2. Move the alternator in or out to obtain proper adjustment.

3. Tighten the anchor bolt after the belt is properly adjusted.