Yaroslavl Engine Plant YMZ-536 Operation Manual page 73

Fig. 20 Camshaft tail end with a gear, supports and tappets.
1 – cylinder block; 2 – gear housing; 3 – camshaft;
4 – camshaft gear; 5 – camshaft bushing; 6 – camshaft rear
bushing;7 – camshaft bearing housing; 8 – camshaft thrust flange;
9 – tappets; 10 – pushrods; 11 – tappet locks; 12 – tappet guides
The intake rocker arms are shorter than exhaust rocker arms
(See Fig.22).
From the side of the pushrods the rocker arms have screwed-in
adjustment screws with a spherical surface on the lower end and lock
nuts to adjust valve clearances.
From the yoke side, the rocker arms have press-fitted ball pins
with cups.
The rocker arms assembled with the shaft and four shaft
supports are bolt-fixed to the cylinder head through holes in the shaft
anв shaft supports.
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