RING 4605458 - Caterpillar

Introduction
This special instruction describes the importance of proper handling of the water pumps listed in table 1.
Table 1
Affected Part Numbers    
1W-0410 Auxiliary Water Pump Gp    
2W-9726 Water Pump Gp    
7E-9781 Auxiliary Water Pump Gp    
10R-1072 Water Pump Gp    
10R-1672 Auxiliary Water Pump Gp    
10R-1673 Auxiliary Water Pump Gp    
10R-9395 Auxiliary Water Pump Gp    
212-8166 Auxiliary Water Pump Gp    
212-8167 Auxiliary Water Pump Gp    
212-8169 Auxiliary Water Pump Gp    
262-4378 Water Pump Seal As    
291-4311 Auxiliary Water Pump Gp    
291-4312 Auxiliary Water Pump Gp    
291-4313 Auxiliary Water Pump Gp    
315-5137 Auxiliary Sea Water Pump Gp    
317-5901 Auxiliary Water Pump Gp    Proper Handling of the Pump
Illustration 1 g01013726
Ceramic seal in the jacket water pump (typical example)
Illustration 2 g01013748
Ceramic seal in the auxiliary water pump (typical example)Improper handling can damage the ceramic seal that is used in the water pumps. If the shaft is not properly supported during shipping or if the shaft is bumped during installation, the ceramic seal that is internal to the pump may crack. The crack will cause a coolant leak from the weep hole. Do not make hard contact with the shaft or with the impeller during installation of the pump. Completely insert the pump during installation. Do not allow the shaft or the impeller to support the weight of the pump during installation.