V-BELT 1749030 - Caterpillar

Illustration 1 g03045336
Table 1
Specification for 258-8725 Water Pump Gp
Item Qty Part Specification Description
1 1 3J-7354 O-Ring Seal Lubricate the bore lightly with 5P-3975 Rubber Lubricant.
2 1 5H-6734 O-Ring Seal Lubricate the bore lightly with 5P-3975 Rubber Lubricant.
Illustration 2 g03045337
Table 2
Item Qty Part Specification Description
3 1 259-4596 O-Ring Seal Lubricate the bore lightly with 5P-3975 Rubber Lubricant.
4 1 229-5469 Bearing Locknut Torque to 300 30 N m (221 22 lb ft).
Tighten the set screw to 4.00 1.25 N m (35.40 11.06 lb in).
5 1 258-8726 Pump Shaft Lubricate the shaft with a thin film of clean engine oil before pressing the impeller onto the shaft. The end of the shaft must be flush with the face of the impeller within 0.15 mm (0.006 inch).
Diameter of the shaft to the impeller seating is 25.400 to 25.410 mm (1.0000 to 1.0004 inch).
Note: Improper handling can damage the ceramic seal. If the shaft is bumped during installation, the ceramic seal that is internal to the pump may crack leading to a coolant leak from the weep hole. Caution should be taken during installation not to make hard contact to the shaft. Insert the pump completely during installation. Do not allow the shaft to support the weight of the pump during installation.
6 1 235-4643 Water Pump Seal Use the following procedure in order to install the water pump seal:
1. Install the seal dry.
2. Install the seal within 2 minutes of the removal of the seal from the shipping sleeve.
3. Install the seal by using a slow motion and even motion.
4. Use the correct installation tool.
Minimum leakage per minute for the lip type seal at 138 kPa (20 psi) of air pressure is less than 24 cc (1 cubic inch).
7 1 336-2212 Water Pump Seal As Use the following procedure in order to install the seal group:
1. Use 207-1600 Rubber Lubricant in order to aid in assembly.
2. Use the installation tool and hand pressure to seat the ceramic ring and the rubber seal in the pump housing.
3. Remove the spring from the seal assembly.
4. Use the installation tool and hand pressure to press the seal assembly on the shaft until the seal faces make light contact.
5. Install the spring.
Minimum leakage per minute for the water pump seal assembly at 138 kPa (20 psi) of air pressure is less than 20 cc (1 cubic inch).
8 1 313-2760 Impeller Bore of the impeller for new shaft is 25.350 0.012 mm (0.9980 0.0005 inch).