Weifang 495 Operation And Maintenance Manual page 15

and reaming the valve- seats are necessary.
.' . "·4.). Cleano.f£
tpe
deposited'
carbon'
on
the:.upper
parts.of.~ylin­
der'
-liners
and
.pisto:Ds•. Dismantle
the .piston
7
conne·~ting··rod;~·as­
sembiles , inspect· the wear condi tions'of:
the~cyli~der
liners ·,:.p"istq:qs
and piston rings
e
Replace. the
pistont~ngs·;·
if.'
necessary.
5).
Dismantle
the
sump, inspect the wear conditions of the
crankshaft; main bearings t,thrust bearings
and,.
connec.ting.·• .
· .JrQd
bearings.
6). Dismantle the lubricating oil pump and adjust the end play
of the rotor if necessary.
7 ). Inspect the dynamo and starting motor
,··rene~ the···.gfe~se
in the
b~arings
e
8).
Ins
p~ct,
adjus tand test the· .injection
pu~p.and
the.
gove,!"-
nor (if it is necessary).