PLUG AS 4391949 - Caterpillar

Removal Procedure
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 system. Refer to Operation and Maintenance Manual, "Refill Capacities and Recommendations".
Illustration 1 g01132004
Disconnect hose assembly (1).
Remove bolts (2).
Remove housing (3).
Remove bracket (4).
Remove tube assembly (5).
Illustration 2 g01132005
Remove tube assembly (6).
Remove belt tensioner (7).
Remove bolts (8).
Remove water pump (9).