INSTALLER AS-DUO-CONE SEAL 1U6441 - Caterpillar

Illustration 1 g03836650
Table 1
Specification for 144-8267 Engine Oil Scavenge Pump
Item Qty Part Specification Description
When the oil scavenge pump is viewed from the drive end, the drive rotates in the Counterclockwise direction.
- - - The maximum axial play of the drive gear is 0.185 mm (0.0073 inch).
1 4 3H-2750 Bolt Torque to 50 10 N m (37 7 lb ft).
2 2 237-7623 O-Ring Seal Lubricate the bore lightly with the lubricant that is being sealed.
Illustration 2 g03836651
Section A-A
Table 2
Item Qty Part Specification Description
3 1 0S-0484 Bolt Use the following procedure to tighten the bolt:
Before installing the drive gear onto the drive shaft assembly, clean the shaft and clean the bore of the gear with isopropyl alcohol.
1. Tap on the drive gear to seat the taper of the drive gear.
2. Tighten the bolt to 100 20 N m (74 15 lb ft).
3. Repeat Step 1 and Step 2 until the torque does not change.
A 1 144-8272 Gear Length of new gear is 145.000 0.015 mm (5.7086 0.0006 inch).
Depth of the bore in the scavenge oil body for the new gear is 145.150 0.020 mm (5.7146 0.0008 inch).
B 1 161-2511 Drive Shaft Diameter of new drive shaft is 31.742 0.008 mm (1.2497 0.0003 inch).
Bore in the sleeve bearing for the new drive shaft is 31.837 0.070 mm (1.2534 0.0028 inch).
C 1 144-8270 Idler Shaft Diameter of new idler shaft is 31.742 0.008 mm (1.2497 0.0003 inch).
Bore in the sleeve bearing for the new idler shaft is 31.837 0.070 mm (1.2534 0.0028 inch).
D 2 1W-6005 Bushing Installation depth of the bushing in the 144-8265 Scavenge Oil Pump Body is 1.5 0.5 mm (0.06 0.02 inch).
Illustration 3 g03836653
Illustration 4 g03836655
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 3
Item Qty Part Specification Description
E - - Position of bearing joints from the centerline through the bearing bores is 45 15 degrees.
F 2 4M-3248 Hollow Dowel Extension of hollow dowels from the cover of the scavenge pump is 6.4 0.5 mm (0.25 0.02 inch).
G 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).