COIL AS 2406825 - 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, worn fan belts, loose connections and trash buildup. Remove trash buildup and perform corrective maintenance as needed.
For any type of leak (coolant, lubricant, or fuel) clean up the fluid. If leaking is observed, find the source and correct the leak. If leaking is suspected, check the fluid levels more often than recommended until the leak is found or fixed, or until the suspicion of a leak is proved to be unwarranted.
* Wipe all fittings, caps and plugs before performing maintenance to reduce the chance of system contamination.* Inspect radiator and ATAAC cores for leaks and trash build-up.* Check the front of the radiator and ATAAC on a daily basis for insects, dirt and other debris.* Clean the front of the radiator and ATAAC with a stainless steel brush and soapy water.* Inspect radiator and ATAAC air inlet system hoses and elbows for cracks and loose clamps.* Inspect 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 two or three 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 coolant leaks at the weep hole. Check the weep hole for water pump filter blockage. Replace the filter if necessary. The water pump seal is lubricated by coolant. It is normal for a small amount of leakage to occur as the engine cools down and parts contract. Excessive coolant leakage may indicate the need to replace the water pump seal. If excessive leakage occurs, check the coolant level frequently and continue to monitor the level until the water pump is repaired. Inspect:* Lubrication system components (such as front and rear crankshaft seals, oil pan, oil filters and valve covers) for leaks.* Fuel system for leaks, loose fuel line clamps and fittings and loose or worn hoses.* Air inlet system hoses and elbows for cracks and loose clamps.* Engine wiring and electronic wiring harnesses for loose connections and worn or frayed wires.* Engine electrical grounding system for good connections and condition.* All guards must be in place. Repair or replace missing or damaged guards.* Check condition of batteries and the level of electrolyte, unless equipped with a maintenance free battery. Refer to the Truck Owners Manual or the battery OEM recommendations for battery maintenance.Engine Crankcase
Check Oil Level
The vehicle must be parked on a level surface to perform this maintenance procedure. Check the