PRECLEANER GP 3844021 - Caterpillar

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 390-1131 Timing Pin (Crankshaft) 1
B 435-3146 Timing Pin (Camshaft) 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Ensure that all components are clean and free from wear of damage. If necessary, replace any components that are worn or damaged.
If Tooling (A) and Tooling (B) are not installed, install Tooling (A) and install Tooling (B). Refer to Disassembly and Assembly, "Fuel Injection Pump Gear - Remove" for the correct procedure.
Illustration 1 g02937163
If necessary, install locating pin (6) into fuel injection pump shaft (7).
Ensure that locating pin (6) is 45 degrees from vertical and parallel to the center of Torx head plug (5), refer to Illustration 1.
Position gear (8) onto fuel injection pump shaft (7).
Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove and Install" for the correct procedure.
Install the crankcase breather. Refer to Disassembly and Assembly, "Crankcase Breather - Install" for the correct procedure.
Illustration 2 g02937277
Remove Tooling (B) from the front housing.
Install new O-ring seal (1) to plug (2).
Install plug (2). Tighten the plug to a torque of 25 N m (221 lb in).
Install new O-ring seal (3) to plug (4).
Install plug (4). Tighten the plug to a torque of 30 N m (266 lb in).
If equipped, install the accessory drive. Refer to Disassembly and Assembly, "Accessory Drive - Remove and Install" for the correct procedure.