Oil Seals; Mountings - Mitsubishi 4DQ50 Service Manual

(O.05mm) of thickness gauge blades between valve tops and rockers. Now turn crank
shaft slowly until gauge blades are pressed tight, this point crank angle is valve lifts reaCh
point A and B shown as Fig. 5-11. The mid·point between them corresponds to max.
cam lift. Compare the results of measurement with the specified crank angles.
7 OIL SEALS
Oil seals on front and rear ends of crank shaft must be centered right. So take care in
clamping down timing gear case and rear end oil seal.
The part to install front end oil seal has concentricallY'machined periphery. Center the
seal so as to fit to it. Meanwhile, for rear end oil seal, center it on basis of its periphery. In
either case, a special centering tool is available.
Remember that rear end oil seal must be set with oil leak·off knotch in slinger down.
Prior to installing oil seals, coat their lips with pure engine oil.
8 MOUNTINGS
On motor vehicle, rubber cushions on front mountings form a paralle-Iogram in free
condition as shown in Fig. 5-12, and a rectangle under load. Remember this in setting them.
On construction
cushion rubber.
machine, three point support mounting is
./1 \
f--+'\ ~
~I.~ ,
. $-
•
used. Timing gear side has
Fig. 5-12 Mounting on motor vehicle (in free condition)
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