IMPELLER ASSEM. 1L4774 - Caterpillar

Illustration 1 g03109317
Illustration 2 g03109339
Table 1
Specification for 116-9854 Rear Gear Gp
Item Qty Part Specification Description
1 2 7E-3897 Camshaft Drive Gear Before assembly, clean the taper of the camshaft and the tapered bore of the camshaft drive gear with lint free cloth saturated with cleaning solvent to remove excess oil. Clean with alcohol wipe.
2 2 112-1554 Idler Gear As Bore of 125-9751 Bushing after installation is 81.060 0.010 mm (3.1913 0.0004 inch).
Installation depth is 1.00 0.25 mm (0.039 0.010 inch).
3 1 4P-5459 Balancer Gear Assembly Bore of 4P-5438 Bushing after installation is 75.060 0.010 mm (2.9551 0.0004 inch).
Installation depth is 1.50 0.50 mm (0.059 0.020 inch).
4 - - The mark on the cluster idler gear (3) must be in alignment with the mark on the crankshaft gear (5).
6 2 9X-8887 Bolt Use the following procedure to tighten the bolt for the camshaft drive gears:
1. Tighten the bolt for the camshaft drive gear to 360 40 N m (266 30 lb ft).
2. Mark a vertical line on the head of the bolt for the camshaft drive gear. Refer to Illustration 2.
3. Place a driver against the retaining plate of the camshaft drive gear. Strike the driver solidly with a hammer 3 to 4 times.
4. Again, tighten the bolt for the camshaft drive gear to 360 40 N m (266 30 lb ft).
5. Repeat Step 3 and Step 4 until the mark on the bolt turns a minimum of 90 degrees. Refer to Illustration 2.
7 2 112-1552 Idler Shaft Diameter is 81.000 0.010 mm (3.1890 0.0004 inch).
8 4 1B-4367 Bolt Torque to 240 20 N m (177 15 lb ft).
9 1 4P-5437 Gear Shaft Diameter is 74.990 0.010 mm (2.9524 0.0004 inch).
10 4 8M-2530 Bolt Torque to 140 10 N m (103 7 lb ft).
11 2 8S-2331 Bolt Torque to 240 20 N m (177 15 lb ft).
12 2 101-1368 Thrust Washer Thickness is 1.90 0.10 mm (0.075 0.004 inch).