RACE (Inner) 1M4120 - Caterpillar

Required Tools
Table 1
Tools Needed Quantity
279-3473 Barring and Mounting Gp 1
367-4863 Barring and Mounting Gp 1
367-4864 Barring and Mounting Gp 1
Ratchet wrench with a 34.0 mm (1.34 inch) socket 1
Torque wrench 1
Illustration 1 g02618278
279-3473 Barring and Mounting Gp
367-4863 Barring and Mounting Gp
367-4864 Barring and Mounting Gp
Testing and Adjusting
Illustration 2 g03670407
Flywheel pin storage and left side pinning location
(1) Timing pin (Left side of flywheel housing)
(2) Timing pin storage locations
Illustration 3 g03670448
Engines that are fitted with 334-8988 Flywheel As can be pinned from the top or side location.
Barring tool installation and right side pinning location (right side engine view)
(5) Barring tool
Illustration 4 g06075830
Engines that are fitted with 280-4337 Flywheel As can only be pinned from the top location of the rear housing.
Check each timing pin storage location (2) for flywheel timing pin assembly. The correct pin is identified by the letter "F" that is stamped in the top of the bolt head of the timing pin. Remove the correct pin from storage.
Install the timing pin into the most convenient timing port:
Remove plug (4) from timing port (3) in the flywheel housing.Note: There is a timing port for side pinning located on both sides of the engine.
Insert the timing pin into the timing port.
Use barring tool (5) and a ratchet wrench with a 34 mm socket to turn the flywheel in the direction of normal engine rotation. Turn the flywheel until the machined hole in the flywheel is aligned with the appropriate timing port:If the top timing port is used, drop the pin into the hole and slowly bar the engine over.If a side timing port is used, gently press the pin against the flywheel while you bar the engine over.
The pin will easily insert into the timing hole in the flywheel as the holes become aligned.Note: If the flywheel is turned beyond the point of engagement, the flywheel must be turned in the direction that is opposite of normal engine rotation. Turn the flywheel by approximately 30 degrees. Then turn the flywheel in the direction of normal engine rotation until the timing bolt engages with the threaded hole. This procedure will remove the play from the gears when the No. 1 piston is on the top center.
Remove the valve cover for the No. 1 cylinder head.
The inlet and exhaust valves for the No. 1 cylinder are fully closed if the No. 1 piston is on the compression stroke. The rocker arms will be easily movable by hand. If the rocker arms cannot be moved and the valves are slightly open, the No. 1 piston is on the exhaust stroke. Ensure the cylinders that will be checked or adjusted are on the correct crankshaft stroke position. Refer to Testing and Adjusting, "Crankshaft Position for Fuel Injector Adjustment and Valve Lash Setting".Note: When the actual stroke position is identified and the other stroke position is needed, remove the timing bolt from the flywheel. Turn the flywheel by 360 degrees in the direction of normal engine rotation.Torque specification for the timing port plug at the top