HOSE AS 4968216 - Caterpillar

Inspect the Tube of the Crankcase Breather
Inspect the breather tube (1) for damage. Ensure the outlet (2) is clean and free from any obstructions. Ice can cause obstructions in adverse weather conditions.Crankcase Breather Tank
The crankcase breather tank requires regular inspection, and should be drained before the oil level reaches the full point. All lines between the breather and tanks should have continuous fall between the engine and the bottle. The bottle drain should be tightened to 5-10 Nm.Inspect the Engine for Leaks and for Loose Connections
A walk-around inspection should only require a few minutes. When the time is taken to perform these checks, costly repairs and accidents can be avoided.For maximum engine service life, make a thorough inspection of the engine compartment before starting the engine. Look for items such as oil leaks or coolant leaks, loose bolts, worn belts, loose connections, and trash buildup. Make repairs, as needed:
The guards must be in the proper place. Repair damaged guards or replace missing guards.
Wipe all caps and plugs before the engine is serviced to reduce the chance of system contamination.
For any type of leak (coolant, lube, 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.
Accumulated grease and/or oil on an engine or deck is a fire hazard. Remove this debris with steam cleaning or high pressure water.
Ensure that the cooling lines are tight and ensure that the cooling lines are properly clamped. Check for leaks. Check the condition of all pipes.
Inspect the water pumps for coolant leaks.Note: The water pump seal is lubricated by coolant in the cooling system. A small amount of leakage is normal as the engine cools down and parts contract.Excessive coolant leakage may indicate the need to replace the water pump seal. For the removal of water pumps and the installation of water pumps and/or seals, refer to the Service Manual for the engine or consult your Cat dealer.
Inspect the lubrication system for leaks at the front crankshaft seal, the rear crankshaft seal, the oil pan, the oil filters, and the valve cover.
Inspect the fuel system for leaks. Look for loose fuel line clamps.
Inspect the piping and elbows of the air inlet system and exhaust system for cracks and loose or damaged clamps.
Inspect the alternator belt and the accessory drive belts for cracks, breaks, or other damage.Belts for multiple groove pulleys must be replaced as matched sets. If only one belt is replaced, the belt will carry more load than the belts that are not replaced. The older belts are stretched. The additional load on the new belt could cause the belt to break.
Drain the water and the sediment from fuel tanks daily to ensure that only clean fuel enters the fuel system.
Inspect the wiring and the wiring harnesses for loose connections and for worn wires