FAN AS-BLOWER 9Y0123 - Caterpillar

Removal Procedure
Start By:
Remove the fan. Refer to Disassembly and Assembly, "Fan - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Drain the coolant from the cooling system into a suitable container for storage or disposal. Note: Refer to Operation and Maintenance Manual, "Refill Capacities" for the coolant capacity of the engine.
Loosen the clamps and remove the hose from the water pump inlet.
Illustration 1 g00952695
Remove the setscrews (3) that fasten the water pump (4) to the front housing (1).
If necessary, tap the water pump with a soft hammer in order to loosen the water pump.
Remove water pump (4). Remove the gasket (2) from the front housing and the water pump. Discard the gasket (2). Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 9S-3263 Thread Lock -
B - Guide Bolt
(M8 X 1.25 by 70 mm) 2
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Inspect the drive gear for the water pump for wear or other damage. If necessary, replace the drive gear.
Clean the joint faces of the water pump and the front housing. Note: Do not use sealant on the gasket for the water pump.
Illustration 2 g00952716
Install Tooling (B) in the front housing (1).
Install a new gasket (2) on the front housing.
Illustration 3 g00952731
Install the water pump (4) on the front housing. Note: New setscrews have sealant on the first 13 mm (0.5 inch) of the threads. In order to reuse the old setscrews, clean the old sealant from the setscrews and apply Tooling (A) to the setscrews.
Install the setscrews (3) that fasten the water pump to the front housing. Do not tighten the setscrews at this time.
Remove Tooling (B) and install the remaining setscrews in order to secure the water pump to the front housing. Note: Tighten the setscrews evenly in order to pull the water pump into the front housing.
Tighten the setscrews (3) to a torque of 22 N m (16 lb ft). Tighten the setscrews in the sequence that is shown in Illustration 3.
Install the hose to the water pump inlet. Tighten the hose clamps.
Fill the cooling system with coolant. Refer to Operation and Maintenance, "Refill Capacities" for the cooling system capacity. End By:
Install the fan. Refer to Disassembly and Assembly, "Fan - Remove and Install".