56
486 PL ENGINE
P
ASSEMBLY OF THE CYLINDER HEAD :
Ensure that the hollow dowels are placed in their
respective position i. e. one in the cylinder head
and other in cam shaft caps.
Install spring seat
If required press valve guide seal with the help of
dolly.
Install valves in their respective position.
Place valve springs and retainer over it.
Press the valve spring with the help of spring
compressor (Pt No. 2699 5890 0603) and install
half lock with help of grease & wire. Fig. 127
Ensure that the two grooves are properly located.
Smear tappet outside diameter with engine oil and
place it over valve. Fig. 128
Smear cam shafts journals and cam lobes with
moly paste grease.
The exhaust cam shaft is with bigger boss at front
on which the timing gear is to be bolted. Fig. 129
Ensure that inlet cam shaft has a pin at rear end.
Press thin pin in both the cam shafts and then press
sprocket over it aligning its slot with pin.
Place chain over both the sprockets & place
tensioner.
Place both the cam shafts simultaneously with chain
and chain tensioner on cylinder head bearings.
Fig. 130
Align the slots on rear sides of both the cam shafts
horizontally so that it would be easier to check the
timing afterwards by inserting timing plate in the
slot.
Fig. 130
Fig. 129
Fig. 128
Fig. 127
EXH. CAM SHAFT
INTAKE CAM SHAFT




