SHAFT AS 1771050 - Caterpillar

You must read and understand the warnings and instructions contained in the Safety section of this manual before performing any operation or maintenance procedures.Walk-Around Inspection
Inspect Engine for Leaks and Loose Connections
For maximum service life of your truck engine, make a thorough under the hood inspection before starting the engine. Look for such items as oil or coolant leaks, loose bolts, worn fan belts, loose connections and trash build-up. Remove trash build-up and have repairs made as needed.Keep a close watch for leaks. If leaking is observed, find the source and correct the leak. If leaking is suspected or observed, check the fluid levels more frequently than the recommended maintenance intervals prescribed in this publication.Until the suspicion for a leak has been proven to be unwarranted or a leak is found and fixed, continue this procedure on a daily basis.* Wipe all fittings, caps and plugs before servicing to keep dirt and debris from entering engine components. * Inspect the radiator for leaks and trash build-up. * Inspect the radiator hoses for cracks and loose clamps. * Inspect the fan and accessory drive belts for cracks, breaks or other damage.Belts for multiple groove pulleys must be replaced as matched sets. If only one belt of a 2 or 3 belt set is replaced, it will carry more of a load than the belts not replaced since the older belts are stretched. The additional load on the new belt could cause it to break. * Inspect the water pump for leaks. * Inspect the engine for oil leaks, such as front and rear crankshaft seals, oil pan, oil filters and valve covers. * Inspect the fuel system for leaks, loose fuel line clamps and fittings and loose or worn hoses. * Inspect wiring for loose connections and worn or frayed wires. * Inspect air intake system hoses and elbows for cracks and loose clamps.* Inspect engine-to-frame ground strap for good connection and condition.* All guards must be in place. Repair or replace missing or damaged guards.* Disconnect any battery chargers that are not protected against the starter current drain. Check condition of batteries and the level of electrolyte, unless equipped with a maintenance free battery.Refer to OEM truck owner manual or manufacturers' recommendations for battery maintenance.Engine Crankcase
Check Oil Level
Make sure you read and understand the information in the "Lubricant Specifications" section of this manual before you proceed with maintenance of the oil system.
The vehicle must be parked on a level surface to perform this maintenance procedure.
1. Check the oil level with the engine stopped. 2. Maintain the oil level between the ADD and FULL RANGE zone on the "ENGINE STOPPED" side of the dipstick. Do not fill the crankcase above the FULL RANGE zone. Operating your engine when the oil level is above the FULL RANGE zone could cause your crankshaft to dip into the oil. If this happens, the air bubbles created from the crankshaft dipping into the oil will reduce the lubricating characteristics of your oil and