IDLER & BEARING AS 3326008 - Caterpillar

Illustration 3 g01471718
Typical example
Apply sufficient pressure to fuel injection pump gear (7) in a counterclockwise direction in order to remove the backlash. Lock the fuel injection pump in this position. Refer to Disassembly and Assembly, "Fuel Pump Gear - Remove" for the correct procedure.
Mark gears (1), (6) and (7) in order to show alignment. Refer to Illustration 3. Note: Identification will ensure that the gears can be installed in the original alignment.
Remove fuel pump gear (7). Refer to Disassembly and Assembly, "Fuel Pump Gear - Remove" for the correct procedure.
Remove camshaft gear (1). Refer to Disassembly and Assembly, "Camshaft Gear - Remove and Install".
Remove idler gear (6). Refer to Disassembly and Assembly, "Idler Gear - Remove". Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
B 230-6284 Timing Pin (Camshaft) 1
C 230-6283 Timing Pin (Crankshaft) 1
D 9U-7324 Indicator Bracket 1
7H-1942 Dial Indicator 1
3S-3268 Indicator Contact Point 1
7H-1940 Universal Attachment 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: The fuel injection pump must remain locked until the procedure instructs you to unlock the fuel injection pump.
Ensure that number one piston is at the top center position on the compression stroke. Refer to Systems Operation, Testing and Adjusting, "Finding Top Center Position for No. 1 Piston".
Illustration 4 g01488044
Typical example
If necessary, install Tooling (C) into Hole (Y) in the front housing. Use Tooling (C) in order to lock the crankshaft in the correct position. Note: Do not use excessive force to install Tooling (C). Do not use Tooling (C) to hold the crankshaft during repairs.
Ensure that all of the components of the front gear group are clean and free from wear of damage. If necessary, replace any components that are worn or damaged.
Illustration 5 g01471735
Typical example
Illustration 6 g01488055
Typical example
Install camshaft gear (1). Loosely install bolt (9) and washer (8). Refer to Disassembly and Assembly, "Camshaft Gear - Remove and Install" for more information.
Install Tooling (B) through Hole (X) in camshaft gear (1) into the front housing.
Illustration 7 g01471736
Typical example
Illustration 8 g01471718
Alignment of timing marks
Install idler gear (6). Ensure that the timing marks on gears (1) and (6) are in alignment and that the mesh of the gears is correct. Refer to Disassembly and Assembly, "Idler Gear - Install". Check the end play of the idler gear. Refer to Specifications, "Gear Group (Front)" and refer to Disassembly and Assembly, "Idler Gear - Install" for further information.
Remove Tooling (B) and Tooling (C). Tighten bolt (9) for the camshaft gear to a torque of 95 N m (70 lb ft). Check the end play of the camshaft gear. Refer to Specifications, "Camshaft" for more information. Install Tooling (B) through Hole (X) in camshaft gear (1) into the front housing and install Tooling (C) into Hole (Y) in the front housing.
Ensure that the fuel injection pump is locked in the correct position. Refer to Disassembly and Assembly, "Fuel Injection Pump - Install".
Install fuel injection pump gear (7). Refer to Disassembly and Assembly, "Fuel Injection Pump Gear -