VALVE GP-MAIN CONTROL 1070681 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-0520 Driver Group 1 Start By:
Remove the flywheel housing.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Note: The following Step is for a 3508 Engine.
Illustration 1 g01056631
The engine must be put in time before the flywheel housing is removed. This is done in order to make sure that the rear gear group is in alignment with the rotation of the engine, as shown.
Illustration 2 g02033554
Remove bolts (1), plate (2), and gear assembly (3).
Illustration 3 g02033555
Use Tooling (A) and a suitable press to remove bearing (4) from gear assembly (3). Use Tooling (A) and a suitable press to separate gear assembly (3).
Illustration 4 g02033556
Remove bolts (6), bolts (7), and camshaft idler gears (5).
Illustration 5 g02033557
Remove shafts (8) and the thrust washers from camshaft idler gears (5).
Use Tooling (A) and a suitable press to remove the bearings from camshaft idler gears (5).
Illustration 6 g02033558
Remove bolts (9) and shaft (10).
Remove bolts (12) and crankshaft gear (11). Installation Procedure
Install camshaft idler gears (5) and gear assembly (3) in the reverse order of removal.
Tighten bolts (9) to a torque of 140 10 N m (105 7 lb ft).
Tighten bolts (6) and bolts (7) to a torque of 240 20 N m (175 15 lb ft).
The bore in the bearings in camshaft idler gears (5) should be 81.060 0.010 mm (3.1913 0.0004 inch) after installation. The bearings should be installed to a depth of 1.00 0.25 mm (0.039 0.010 inch).
The bore in the bearing in gear assembly (3) should be 75.060 0.010 mm (2.9551 0.0004 inch) after installation. The bearings should be installed to a depth of 1.5 0.5 mm (0.06 0.02 inch).
Apply clean engine oil to the bearings prior to assembly.
Raise the temperature of the larger gear in order to assemble gear assembly (3).