Yaroslavl Engine Plant YMZ-536 Operation Manual page 84

installed in the aluminum water pump housing 6. The bearing is
closed and filled with grease.
On the pump drive spindle the end seal 9 is mounted and the
impeller 5 and the pulley 7 are press-fitted.
To ensure leak proofness of the end seal, the pump housing has
a drain hole 10.
Installed on the suction cavity 2 is the cooling liquid feed pipe
from the vehicle radiator 1.
From the volute cooling liquid comes to the L/O HE cavity
through the channel in the service module housing.
The liquid-to-oil heat exchanger (L/O HE) is used to maintain
optimal level of the oil temperature in the engine lubrication system.
The plate-type heat exchanger with one heat-transferring
element is part of the service module.
The plate-type heat-transferring element 2 (Fig. 26) with seven
plates is fixed onto the service module housing with four bolts 3 and
sealed against oil and cooling water leakage with a gasket 5.
84
LIQUID-TO-OIL HEAT EXCHANGER