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To Replace
Te-assemble in the reverse order, fitting new gaskets where
applicable.
Note: When refitting the distributor drive shaft, ensure the large "D"
of the driving gear offset dog is facing towards the block at No. 1
piston, i.e. slot in a "5 minutes past 7 o'clock" position. Take the
opportunity of checking the camshaft end-float which should be
within 0.64 to 0.16 mm (0.0025 to 0.0065 in). Pull the camshaft out
against the retaining plate and insert a feeler gauge between the
groove and retaining plate. The camshaft retaining plate fitted as
original equipment is 4.621 mm (0.182 in) thick. A service plate 5.258
mm (0.207 in) is available to counteract excessive end float but it may,
of course, be necessary to reduce the thickness of the service plate to
obtain the correct end float, dependent on the amount of wear.
Operation 14 Camshaft bearing removal and replacement
(with camshaft removed)
Removal
1. Remove flywheel (see operation 2).
2. Unscrew four set screws and remove the rear engine plate
from the cylinder block.
3. Drill a hole in the camshaft core plug and prise from the
cylinder block.
4. Press out the rear, centre and front camshaft bearings using
general tool 18G 124A and tool No. 7482 (Figure 18) as follows:
(a) Insert general tool and position pilot, mandrel and
horseshoe as shown in Figure 19.
(b) Applying firm pressure, rotate the general tool handle until
the camshaft bearing is removed completely from its location.
(c) To remove centre and front camshaft bearings position the
general tool and components as shown in Figure 20 and Figure 21.
To replace
1. To replace camshaft bearings position the general tool and
components as shown in Figure 22,23,and 24.
Note: Ensure that the oil holes in the bearing shells align with those in
the block
Figure 19 Removing camshaft rear bearing
1. Pilot
2. Bearing
3. Mandrel
4. Horseshoe
Figure 20 Removing camshaft centre bearing
1. Horseshoe
2. Mandrel
3. Bearing
4. Pilot
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