
Workshop Manual, TPD 1350, issue 3
143
17
New 1000 Series
Engine timing
To set number 1 piston to TDC on the
compression stroke
17-1
Special tools:
Valve spring compressor, PD.6118B
Stud adaptor for use with PD.6118B, PD.6118B-7
Setscrew adaptor for use with PD.6118B, PD.6118B-
8
1 Fasten a temporary pointer to the timing case cover
with its tip near to the outer edge of the crankshaft
pulley or damper (A1).
2 Loosen the gland nuts that retain the atomisers
,
see operation 20-3
.
3 Remove the rocker cover
, see operation 12-1
.
4 Rotate the crankshaft, clockwise from the front,
until the push rod for the inlet valve of the rear cylinder
just tightens.
5 Remove the spring clip and the spacer from the
front of the rocker shaft. Release the fasteners of the
front two pedestals of the rocker shaft and remove the
front rocker lever; tighten the fasteners of the rocker
shaft pedestals.
6 Remove the valve springs from the front valve with
the valve spring compressor PD.6118B and the
adaptor PD.6118-7, for pedestal studs, or the adaptor
PD.6118-8, for pedestal setscrews.
Caution: Fit a suitable collar near the top of the valve
to hold the valve if the crankshaft is rotated too far.
7 Allow the valve to be held by the top of the piston.
8 Fasten a dial test indicator with its plunger in
contact with the top of the valve stem (A2) and with a
reading shown on the gauge. Rotate slowly the
crankshaft, clockwise from the front, until the
clockwise movement of the dial gauge pointer just
stops. Make a suitable mark on the crankshaft pulley
or damper to align with the temporary pointer.
Continue to rotate the crankshaft, in the same
direction, until the gauge pointer just begins to move
in a counter-clockwise direction. Make another mark
on the pulley or damper to align with the pointer. Mark
the centre point between the two marks on the pulley
or damper and remove the other two marks.
9 Rotate the crankshaft approximately 45°
counterclockwise from the front and then clockwise
until the mark on the pulley or damper is aligned with
the pointer. Number 1 piston is now at TDC on the
compression stroke.
2
1
A
A0173
Purchased from www.WorkshopManuals.co.uk
Содержание New 1000 Series
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