SHAFT-BEVEL PINION 7G5621 - Caterpillar

Illustration 1 g01471861
Before operation, the pump must be lubricated with clean engine oil and the pump must turn freely by hand or damage to parts can be the result.
Table 1
Specification for 8N-9164 Engine Oil Scavenge Pump
Item Qty Part Specification Description
A 1 7N-5052 Gear Length is 84.000 0.015 mm (3.3071 0.0006 inch).
Depth of the bore in the scavenge oil body for the new gear is 84.150 0.020 mm (3.3130 0.0008 inch).
B 1 161-2509 Drive Shaft Diameter is 31.742 0.008 mm (1.2497 0.0003 inch).
Bore in the bushing for new drive shaft before installation is 31.837 0.070 mm (1.2534 0.0028 inch).
C - - Distance from the end of the idler shaft assembly to the gear face is 34.0 0.5 mm (1.34 0.02 inch).
D 1 1W-6005 Bushing Installation depth in the 2W-6895 Scavenge Pump Body is 1.5 0.5 mm (0.06 0.02 inch).
E 1 7W-1017 Shaft Diameter is 31.742 0.008 mm (1.2497 0.0003 inch).
Bore in the bushing for new idler shaft before installation is 31.837 0.070 mm (1.2534 0.0028 inch).
1 1 0S-0484 Bolt Use the following procedure in order to tighten the bolt:
Before installing the drive gear onto the drive shaft assembly, clean the shaft and clean the bore of the gear.
1. Tap on the drive gear in order to seat the taper of the drive gear.
2. Tighten the bolt to 100 20 N m (75 15 lb ft).
3. Repeat this procedure until the torque does not change.
Illustration 2 g02596558
Table 2
Specification for 8N-9164 Engine Oil Scavenge Pump
Item Qty Part Specification Description
F - - Position of bushing joints from the centerline through the bearing bores is 45 15 degrees.
G 2 4M-3248 Hollow Dowel Extension of hollow dowels is 6.4 0.5 mm (0.25 0.02 inch).
H 2 1W-6005 Bushing Installation depth of the bushing in the 7N-8814 Scavenge Pump Cover is 1.5 0.5 mm (0.06 0.02 inch).