Weifang 495 - Page 108

pump bearings and the belt itself ,whereas if it is too loose.,it will
. cause slippage which can decrease the cooling efficiency and even-
tually cause the engine overheated.
(5) A slight leakage of not move than 3 drops of water per
minute from t~e drain hole 'of the water pump is permitted. The
leakage may' take. place more seriously for a new pump because the
seal gasket has not got fitted' yet. nevertheless the pump should be
dismantled for remedy if the leakage gets more and more. .
The disassembly and' inspection of the water. pump should be
carried out according to the following steps:
a. Loosen off the bed plate fastening screws and remove the
bed plate.
b. L .. cosell off the impeller fastening cap nut and make use of
the two M6 tapped holes on the impeller to pull ,out the impeller it-
self with two l)olts.
c. Remove the v\tater seal lock ring inside the neck of the im-
peller and, take out th.e seal gasket and the water seal, then inspect
them or -eplace them if necessary (the water seal is the same ~s
that of the '~Jie Fan"or of the "Yue Jin" truck).
d. Looserl off the pulle'y fasterling nut and take off the fan to-
gether with the pulley-
e .. Take off the snap rirlg with a pair of pliers ,press out the
pump shaft together with the bearings from the front .end, then in-
spect them and replace the bearings if necessary or clean thenl and
rel1ew the grease.
The reassemble steps IS j.ust the reverse of that mentioned
above.
During installing, the bearing should be fully filled with new
clean grease. TIle axial clearance between the front end of impeller
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