HOUSING AS 1T1850 - Caterpillar

Illustration 1 g03836640
Typical Example
Bottom view
Illustration 2 g03836639
Typical Example
Section A-A
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.
Illustration 3 g03836638
Typical Example
Table 1
Specification for 1W-8508 Scavenge Pump, 419-6745 Scavenge Pump
Item Qty Part Specification Description
1 4 3H-2750 Bolt Torque to 50 10 N m (37 7 lb ft)
2 2 - Before assembly, lightly lubricate the bore of the O-Ring Seal with clean engine oil.
B 1 1W-8515 Gear Length is 110.000 0.015 mm (4.3307 0.0006 inch).
Depth of the bore in the scavenge oil body for the new gear is 110.15 0.02 mm (4.337 0.001 inch).
C 1 161-2510 Drive Shaft Diameter is 31.742 0.008 mm (1.2497 0.0003 inch).
After assembly, bore of 1W-6005 Bushing for the new drive shaft is 31.837 0.070 mm (1.2534 0.0028 inch).
D 1 1W-8509 Scavenge Oil Body Installation depth of 1W-6005 Bushing in the scavenge oil body is 1.5 0.5 mm (0.06 0.02 inch).
E 1 1W-8511 Idler Shaft Assembly Distance from the end of the idler shaft assembly to the gear face is 34.0 0.5 mm (1.34 0.02 inch).
F 1 106-9865 Idler Shaft Diameter is 31.742 0.008 mm (1.2497 0.0003 inch).
Bore in the 1W-6005 Bushing for the new idler shaft is 31.837 0.070 mm (1.2534 0.0028 inch).
3 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.
G - - Position of the bushing joints from the centerline through the bearing bores is 45 15 degrees.
H 2 1W-6005 Bushing Installation depth in the 7N-8527 Pump Cover is 1.5 0.5 mm (0.06 0.02 inch).
J 2 4M-3248 Hollow Dowel Extension of the hollow dowel is 6.4 0.5 mm (0.25 0.02 inch).