SEAL-O-RING 2667959 - Caterpillar

Illustration 1 g02592154
Table 1
Specification for 250-6720 Auxiliary Water Pump Gp
Item Qty Part Specification Description
1 4 249-6365 Taperlock Stud Torque to 35 5 N m (26 4 lb ft).
2 1 271-4926 Seal Lubricate the bore lightly with glycerin or approved equivalent.
3 3 2Y-5829 Nut Torque to 27 4 N m (239 35 lb in).
4 3 8T-7044 Taperlock Stud Torque to 35 5 N m (26 4 lb ft).
5 1 212-8180 Pump Drive Shaft As The end of the pump shaft must be flush with the face of the impeller within 0.15 mm ( 0.006 inch).
Before pressing the impeller on the shaft, lubricate the shaft with clean engine oil.
Diameter of the shaft is 25.400 to 25.413 mm (1.0000 to 1.0005 inch).
Width in the groove of the shaft for the thrust washer is 8.75 0.05 mm (0.344 0.002 inch).
6 1 7N-4758 Thrust Washer Thickness is 8.5 mm (0.33 inch)
7 1 271-4928 Seal Lubricate the bore lightly with glycerin or approved equivalent.
8 1 166-4375 Seal Gp Use the following procedure to install the seal group.
1. Lubricate the outside diameter of the ceramic ring (12) and rubber seal (11) with clean water or with 207-1600 Rubber Lubricant.
2. Seat the ceramic ring (12) and the rubber seal (11) into the housing.
3. Remove the spring (14) from the seal assembly (13).
4. Press the seal assembly on the shaft until the faces of the seal makes the contact lightly.
5. Install the spring.
10 1 8C-5236 Lip Type Seal Do not lubricate the sealing lip.
B - - Bore of the impeller is 25.342 0.013 mm (0.9977 0.0005 inch).
C - - Distance between the vanes of the impeller and the outside of the housing is 31.5800 0.4425 mm (1.24330 0.01742 inch).