820500 2 Force GASKET-Fuel Pump Cover

Engine Rotation
When you view the engine from the flywheel end, the SAE standard engine crankshaft rotation is counterclockwise.Note: The front end of the engine is opposite the flywheel end of the engine.The left side and the right side are viewed from the flywheel end of the engine.Engine Prelubrication
Many service and inspection procedures require rotation of the engine. The prelubrication of the engine is recommended when the crankshaft is rotated during normal maintenance operations. This includes adjusting the valves as well as starting the engine.The push button for the engine prelube is at the lower left-hand corner of the panel for the Engine Supervisory System. The push button provides a manual method to prelube the engine.DO NOT use the air or electric starting motors to rotate the engine. If the engine is rotated too fast, oil from the prelube pump will not be enough to protect the engine.The engine should be prelubed. The manual barring group should be used to rotate the engine for service work. The prelube pump should be left on during the time of engine rotation. Damage can result if the crankshaft is rotated on dry bearing surfaces.
In order to avoid possible damage to the engine, the prelube pump should not be operated continuously for extended periods of time. During repairs, if the prelube pump has run for more than three hours continuously, any oil that may have collected in the cylinders and/or above the valves should be removed before attempting to start the engine.
Finding The Top Center Compression Position For No. 1 Cylinder
Illustration 1 g00311103
Location of the Timing Pin
(1) Manual barring group
(2) Storage position of the timing pin
Remove the crankshaft timing pin from the storage position of the timing pin (2). The storage position of the timing pin is located below the manual barring group (1). The manual barring group is on the right side of the rear housing.
Illustration 2 g00311105
(3) Flywheel timing bracket
(4) Mounting bracket for the timing pin
(5) Timing pin
Lubricate the engine by making reference to the "Engine Prelubrication". Use the manual barring group to turn the engine flywheel in the direction of normal engine rotation. Turn the engine until the crankshaft timing pin (5) can be installed through the mounting bracket for the timing pin (4). Ensure that the crankshaft timing pin (5) is engaged in the flywheel timing bracket (3).Note: The engine should be prelubed before rotating the crankshaft to perform service work. Rotating the crankshaft before prelube may cause damage to the crankshaft bearings if the mating surface is dry.Note: If the flywheel is positioned so that the timing pin cannot be installed in the bracket assembly, turn the flywheel in the opposite direction of normal rotation. The flywheel must be turned approximately 20 degrees. Then turn the flywheel in the direction of normal engine rotation until the timing pin can be installed in the bracket assembly. This procedure ensures that the play is removed from the timing gears when the No. 1 piston is put on the top center of the compression stroke.Note: An alternate method of determining that the No. 1 cylinder is at Top Center (TC) is a visual check of the location of the hole for the crankshaft timing pin in the flywheel. If the No. 1 cylinder is at TC, the hole for the crank angle sensor (CAS) in the flywheel will be positioned directly opposite the CAS.
Remove the valve cover from the No. 1 cylinder head.
The inlet and exhaust valves for the No. 1 cylinder are fully closed if No. 1 piston is on the compression stroke and the rocker arms can be moved by hand. If the rocker arms cannot be moved and the valves are slightly open, the No. 1 piston is on the exhaust stroke. Make reference to the Table to find the correct cylinders that need checking and/or adjusting for the stroke position of the crankshaft when the timing pin has been installed in the crankshaft.Note: When the actual stroke position is identified, and the other stroke position is needed, all timing pins should be removed from the engine. Turn the flywheel for 360 degrees in the direction of the normal rotation of the engine.
Illustration 3 g00283190
G3606 Cylinder And Valve Location
(A) Inlet valve
(B) Gas admission valve
(C) Exhaust valve
Illustration 4 g00465539
G3608 Cylinder And Valve Location
(A) Inlet valve
(B) Gas admission valve
(C) Exhaust valveCamshaft Timing Check
Remove rear camshaft inspection covers from both sides of the engine.
Put the No. 1 piston at the Top Center Position on the compression stroke. Make reference to the section "Finding The Top Center Compression Position For No. 1 Cylinder".
When the crankshaft timing pin is installed and the No. 1 piston is on the compression stroke, remove the camshaft timing pin from the storage position.
Illustration 5 g00311143
Installation Of Camshaft Timing Pin
(1) Timing pin
(2) Camshaft
Install timing pin (1) through the timing pin hole and into the hole in camshaft (2).
If the timing pin does not go into the hole in the camshaft, the engine is not in time and the camshaft position must be adjusted. Refer to the section "Camshaft Timing Adjustment" for the procedure that is used to time the camshafts with the crankshaft.Camshaft Timing Adjustment
Note: Before you make any timing adjustments, check the timing to determine if an adjustment is necessary. Refer to the section "Camshaft Timing Check" for this procedure.