CRANKSHAFT AS 1556632 - 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.Before proceeding with this maintenance, perform all previous maintenance interval requirements.Manual Barring Device or Air Wrench Drive Barring Device (If Equipped)
Lubricate Manual Device (1:1 Ratio)
Lubricate the pinion gear with grease (MPGM). Use a hand operated grease gun and apply one pump of grease to the grease fitting.Lubricate Air Wrench Device (50:1 Ratio)
Lubricate the grease fitting with grease (MPGM) until grease is visible around the shaft.Valve Lash, Valve Bridge, Injector Timing & Synchronization
Check/Adjust
Initial valve lash adjustment for new or rebuilt engines only, is recommended at the initial 3 Month maintenance interval. This is due to the initial wear and seating of valve train components.The next adjustment should be made at the Every 6 Month maintenance interval. If unchanged at the first 6 Month interval, make future adjustments at Every One Year interval thereafter.If an adjustment was performed at the first 6 Month interval, make future adjustments at Every 6 Month inspection interval until unchanged, then make future adjustments at Every One Year interval thereafter.Thoroughly clean the area around the valve mechanism covers to prevent the entry of foreign matter into the top of the cylinder head and valve mechanism.
DO NOT use the air or electric starters to rotate the engine. If the engine is rotated too fast, oil cannot flow through the openings in the cylinder head fast enough to prevent damage to the combustion seal.
Be sure the starting motors are disabled and engine cannot be started while this maintenance is being performed. This is very important when the engine is equipped with an automatic start-stop system.
Before operating barring device or turning the crankshaft, operate the prelube pump to ensure correct prelube procedure. DO NOT crank the engine before prelube, especially after this maintenance procedure, to prevent damage to the crankshaft bearings.
Prelubing the engine is required when the crankshaft is rotated during normal maintenance operations; this includes adjusting valves. Use the air or manual barring group (if equipped) to turn the crankshaft to the TC position.The manual barring device provides the ability to turn the flywheel and crankshaft. When the barring group gear shaft is engaged, the starting system is disabled.The engine should be prelubed prior to rotating the engine crankshaft with the barring group. The prelube pump should also be left ON during the time the engine crankshaft is rotated.
The lube oil can drain out from between the crankshaft and engine bearings if the engine has not been run for a period of time. Damage can result if the crankshaft is rotated on dry bearing surfaces.
The intermittent prelube pump should not be operated continuously for extended periods of time. If, during repairs, the intermittent prelube pump has run continuously for a period of three hours or more, it will be necessary to remove any oil that may have collected in the cylinders and/or above the valves.The gear shaft is spring loaded and must be