MIRROR 4I8135 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8T-3029 Camshaft Support 1
1U-6311 Plate 1
B 1P-2382(1) Wrench Adapter 1
9U-5932(1) Torque Wrench Extension 1
C 6V-6080 Torque Multiplier Gp 1
5P-1748 Socket 1
(1) Only one tool is required. Be sure that the proper tool is used for your engine.Start By:
Remove the valve lifter groups. Refer to Disassembly and Assembly, "Valve Lifter - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00575670
Illustration 2 g00643307
Earlier
Illustration 3 g00643309
Later
Remove the camshaft inspection covers from the side of the cylinder block. Note: The engine must be rotated in order to remove all of the bolts that hold camshaft segment (4) in position.
Use Tooling (B) in order to loosen bolts (1) on the outside of camshaft segment (4).
If it is necessary to remove camshaft journal (2), loosen bolts (3) on the outside diameter.
Rotate the engine until bolts (1) and bolts (3) that were toward the inside of the cylinder block are on the outside.
Loosen remaining bolts (1) and bolts (3).
Illustration 4 g00615465
Earlier
Illustration 5 g00643310
Later
Note: The engine cannot be rotated after camshaft drive gear (5) is removed. Be sure that all of the necessary bolts have been loosened before the camshaft drive gear is removed.
Remove camshaft drive gear (5), if camshaft drive shaft assembly (6) will be removed.
Illustration 6 g01301387
Engage and lock the manual barring group in order to prevent the rotation of the crankshaft when bolt (8) is loosened. Note: In order to prevent damage to the camshaft timing pins, be sure to remove the pins when bolt (8) is loosened.
Use Tooling (C) and loosen bolt (8) on each camshaft.
Remove bolt (8) and washer (9).
Remove bolts (7) and plate (10) from camshaft drive gear (5).
Place washer (9) in position between the camshaft and plate (10). This position is shown in Illustration 6. Install bolt (8).
Install bolts (7) hand tight. Note: Be sure that bolt (8) is installed. This installation will prevent the camshaft drive gears from falling as the gears are loosened from the taper on the camshaft.
Tighten bolts (7) evenly in order to loosen camshaft drive gear (5) from the taper on the camshaft.
Attach a suitable lifting device to camshaft drive gear (5). The weight of camshaft drive gear (5) is approximately 35 kg (77 lb). Remove bolt (8).
Remove bolts (7) from plate (10) and washer (9).
Remove camshaft drive gear (5) from the rear housing.
Illustration 7 g00643311
Earlier camshaft segments
Illustration 8 g00643312
Later camshaft segments
Note: Identify the proper orientation of the camshaft segments and the camshaft journals for installation purposes.
Install Tooling (A) under camshaft segment (4).
Remove bolts (1) that hold the camshaft segment in position.
Carefully move the front section of the camshaft toward the front of the engine. This is done in order to disengage the dowels in each end of the camshaft segment.
Carefully move camshaft segment (4) out of the engine on Tooling (A).
Attach a suitable lifting device to camshaft segment (4). The weight of camshaft segment (4) is approximately 30 kg (66 lb). Remove the camshaft segment from Tooling