DIFFUSER 9Y7112 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A (1)     8S-2241     Camshaft Bearing Tool Group     1    
8S-8290 Nut     1    
8S-8291 Threaded Shaft     1    
8S-8287 Thrust Bearing Assembly     1    
8S-8288 Cone     1    
8S-8292 Extension (Short)     2    
8S-8293 Extension (Long)     1    
B     9U-7222     Camshaft Bearing Pilot     1    
8M-8778 Taperlock Stud (1/2 inch - 13 UNC by 1 9/16 inch)     1    
C     9U-7223     Alignment Bushing     1    
D     9U-7210     Puller Plate     1    
( 1 ) Part of the 8S-2241 Camshaft Bearing Tool Group Start By:
Remove the camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01005315
Remove bolts (1) from rear cover (2). Inspect the O-ring seal and replace the O-ring seal if the O-ring seal is worn or damaged.
Illustration 2 g01034895
Remove the No. 7 camshaft bearing (rear). Work from the rear of the engine to the front of the engine.
Install the small end of Tooling (B) in the camshaft bearing.
Position Tooling (D) on Tooling (A). Install Tooling (A) on Tooling (B) .Note: Tooling (D) is installed on the outside of the cylinder head. Tooling (D) is required in order to remove the No. 7 camshaft bearing from the cylinder head.
Use Tooling (A) to remove camshaft bearing (3) from the cylinder head.
Remove Tooling (B) from Tooling (A) and remove the camshaft bearing.
Repeat Step 3 through Step 6 in order to remove the remaining camshaft bearings. Work from the rear of the engine to the front of the engine.