Engine
SHOP MANUAL MT26-31 - 06.2005
Tier-3 710655-
Ch 1 page 133
The coolant pump is located at the front side of the front cover on the right-hand side of the engine.
The coolant pump is driven by a multigroove belt directly from the crankshaft damper.
The pump is of centrifugal type and consists of a spiral shaped pump housing with an impeller directly
mounted on the driveshaft. The shaft is mounted in the housing and by means of two permanently
lubricated ball bearings.
The pump shaft bearing is sealed against the ingress of coolant by an elastic axial seal.
Coolant pump
1. Outlet to engine
2. By-pass channel
3. Static line
4. Return from charge air cooler
5. Coolant from radiator
Circulation through coolant pump
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