KIT- 5251255 - Caterpillar

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 132-5451 Holding Fixture 1
B 138-8440 Component Cleaner 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00609907
Typical example
Use Tooling (B) in order to clean the inside diameter of air compressor drive gear (4) and the outside diameter of the drive shaft for the air compressor.
Lubricate washer (3) and the threads on the drive shaft with clean engine oil.
Mount air compressor (1) in a bench vise.
A loose air compressor drive gear can lead to immediate loss of hydraulic power to vehicle systems
Install Tooling (B).
Install air compressor drive gear (4) on the air compressor crankshaft.
Install washer (3) and nut (2).
Tighten nut (2) to a torque of 170 15 N m (125 11 lb ft).
Use a soft faced hammer and tap the air compressor drive gear. Again tighten the nut to a torque of 170 15 N m (125 11 lb ft). End By:
Install the air compressor. Refer to Disassembly and Assembly, "Air Compressor - Remove and Install".