C280-16 Tier 4 Marine Engine and C280-12 Tier 4 Marine Engine Caterpillar

Auxiliary Water Pump - Remove and Install

Usage:

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

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. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.
Disconnect the connection for the auxiliary water inlet. Cap the openings.
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Illustration 1 g03743076
Remove tube (1) and elbow (4). Remove tube (2) and elbow (3). Remove the O-ring seals and the gaskets (not shown).
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Illustration 2 g03743085
Attach a suitable lifting device to auxiliary water pump (5). The weight of auxiliary water pump (5) is approximately 55 kg (120 lb).
Remove two bolts (6). Install Tooling (A) and remove remaining bolts (6). The weight of auxiliary water pump (5) is approximately 25 kg (55 lb). Using two people, remove auxiliary water pump (5).
Remove the O-ring seal from the joint between the auxiliary water pump and the front housing. Discard the O-ring seal.

Install auxiliary water pump (5) in the reverse order of removal.
1. Install a new O-ring seal to the joint between the auxiliary water pump and the front housing.
2. Lubricate the O-ring seal prior to installing the auxiliary water pump.