IDLER GP-FRONT 4I7337 - Caterpillar

Disassembly Procedure
Start By:
Remove the cylinder head. Inlet and Exhaust Valves
Table 1
Required Tools
Tool Part Number Part Description Qty
A 5S-1330 Valve Spring Compressor 1
B 8S-2263 Spring Tester 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00598108
Use Tool (A) to compress valve spring (1).
Remove retainer lock (2).
Release the tension on Tool (A). Remove Tool (A).
Illustration 2 g00618922
Remove valve rotator (3), outer spring (5), inner spring (4), and seal (6). Note: If the valves will be reused, mark the valves for identification upon assembly.
Remove valve (7) from the cylinder head.
Illustration 3 g00598111
Measure the force of the valve springs with Tool (B). See the Specifications module for the correct spring force.
Repeat Steps 1 through 6 for the remaining valves. Valve Train Bridge Dowels
Table 2
Required Tools
Tool Part Number Part Description Qty
A 5P-0944 Dowel Puller Group 1
5P-0942 Dowel Extractor 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 4 g00598150
If the bridge dowels will be replaced, use Tool (A) to remove bridge dowel (1) from the cylinder head. Inlet and Exhaust Valve Seat Inserts
Table 3
Required Tools
Tool Part Number Part Description Qty
A 166-7441 Valve Seat Extractor Tool 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 5 g00598156
Use Tool (A) to remove the valve seat inserts from the cylinder head.
Thoroughly clean valve seat bores in the cylinder head. Inlet and Exhaust Valve Guides
Table 4
Required Tools
Tool Part Number Part Description Qty
A 7M-3975 Valve Guide Driver 1
5P-1729 Valve Guide Bushing 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 6 g00598158
Use Tool (A) and a hammer to remove the valve guides from the cylinder head. Valve Lifters
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: The valve lifters may also be removed with the cylinder head on the engine. Remove the camshaft and use the following steps in order to remove the valve lifters with the cylinder head on the engine.
Illustration 7 g00618584
Pull valve lifter (1) out of the cylinder head.
Illustration 8 g00586579
Remove guide spring (2) from the valve lifter.