LINES GP-AIR 2405350 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) 9U-6198 Crankshaft Turning Tool 1
A(2) 5P-7306 Housing 1
5P-7305 Engine Turning Tool 1
B 136-4632 Timing Pin (Crankshaft) 1
268-1966 Adapter
C 230-6284 Timing Pin (Camshaft) 1
(1) The Crankshaft Turning Tool is used on the front pulley.
(2) This Tool is used in the aperture for the electric starting motor.Start By:
Remove the fuel injection pump gear. Refer to Disassembly and Assembly, "Fuel Pump Gear - Remove".
Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install". Note: Either Tooling (A) can be used. Use the Tooling that is most suitable.Note: Care must be taken in order to ensure that the fuel injection pump timing is not lost during the removal of the fuel pump gear. Carefully follow the procedure in order to remove the fuel pump gear.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g02712440
Alignment of timing marks
Illustration 2 g02712439
Remove plug (5) from the cylinder block. Remove O-ring seal (4) from plug (5).
Use Tooling (A) in order to rotate the crankshaft so that number one piston is at top dead center on the compression stroke. Refer to System Operation, Testing and Adjusting, "Finding Top Center Position for No.1 Piston".
Install Tooling (B) into Hole (Y) in the cylinder block. Use Tooling (B) in order to lock the crankshaft in the correct position. Note: Do not use excessive force to install Tooling (B). Do not use Tooling (B) to hold the crankshaft during repairs.
Ensure that Tooling (C) is installed into Hole (X) in the camshaft gear. Use Tooling (C) in order to lock the camshaft in the correct position.
Ensure that gear (1), gear (2), and gear (3) are marked in order to show alignment.
Illustration 3 g02712442
Loosen nuts (7) on all rocker arms (8). Unscrew adjusters (6) on all rocker arms (8) until all valves are fully closed. Note: Failure to ensure that ALL adjusters are fully unscrewed can result in contact between the valves and pistons.
Illustration 4 g02712444
Mark plate (9) in order to show orientation. Note: Identification will ensure that the plate can be installed in the original orientation.
Remove bolts (10).
Remove plate (9).
Remove the assembly of idler gear (3) and hub (11) from the recess in the front housing. Note: The idler gear must be tilted during removal.
Remove hub (11) from idler gear (3).