Opel Kadett Owner's Manual page 43

9.5a Removing the Allen screws which
secure the camshaft thrust plate
plate. Push the camshaft rearwards and
extract the plate (see illustrations).
6 Carefully withdraw the camshaft from the
distributor end of the housing. Be careful not
to damage the bearing surfaces in the housing
(see illustration).
7 Where necessary, undo the bolts which
secure the belt cover backplate and remove
the plate (see illustration).
Refitting
8 Prise out the oil seal with a screwdriver.
Drive in a new seal until it is flush with the
housing, using a piece of wood or a suitably
sized socket (see illustrations).
9 Liberally lubricate the camshaft bearings
and the oil seal lip. (If special lubricant has
been supplied with a new camshaft, use it;
otherwise use clean engine oil, perhaps with a
molybdenum disulphide additive.) Carefully
insert the camshaft.
9.7 Camshaft belt cover backplate (1.3
litre engine shown)
9.10 Checking the camshaft endfloat
9.5b Removing the camshaft thrust plate
10 Refit the thrust plate and tighten its
screws. Check the camshaft endfloat using a
feeler blade (see illustration). If the endfloat
exceeds that specified, renew the thrust plate.
11 Refit the belt backplate
necessary).
12 Refit the camshaft sprocket, engaging the
peg on the shaft with the hole in the sprocket.
Tighten the sprocket bolt to the specified
torque, holding the camshaft as before (see
illustrations).
13 Refit the camshaft housing, (Section 8).
14 If a new camshaft has been fitted, it is
most important to observe the following
running-in schedule (unless
specified by the manufacturer) immediately
after start-up:
One minute at 2000 rpm
One minute at 1500 rpm
One minute at 3000 rpm
One minute at 2000 rpm
9.8a Prising out the camshaft housing oil
seal
9.12a Fitting the camshaft sprocket. Peg
locating hole is arrowed
9.6 Removing the camshaft from the
15 Change the engine oil (but not the filter,
unless due in any case) approximately 1000
km after fitting a new camshaft.
(where
10 Cylinder head - overhaul
1 With the cylinder head removed, clean
away external dirt.
2 Remove the valves, springs and associated
components, as described in Section 9 of
Chapter 2A. Note that both inlet and exhaust
valve springs have seats, but they are
different (see illustration).
otherwise
3 Inspect the valves, valve seats, guides and
springs, also as described in Section 9,
Chapter 2A. Regrind or renew as necessary.
4 Check the head sealing surface for warping
by placing in on a piece of plate glass, or
using a straight-edge and feeler blades. Slight
9.8b Fitting a new camshaft housing oil
9.12b Tightening the camshaft sprocket
OHC engines 2B•9
housing
2B
seal
bolt