worn and are not a loose fit in the camshaft or
sprocket holes.
Refitting
10 Refitting is a reversal of removal. Ensure
that the sprockets are fitted to their correct
camshafts and tighten the retaining bolts to
the specified torque.
Crankshaft sprocket
Removal
11 Remove the timing belt as described in
Section 12.
12 Slide the sprocket off the front of the
crankshaft followed by the timing belt guide
behind.
Inspection
13 Check the condition of the sprocket,
inspecting carefully for any wear grooves,
pitting or scoring around the teeth, or any
wear ridges which might cause damage to the
timing belt. Examine the Woodruff key and its
groove and make sure it is a tight fit.
Refitting
14 Refitting is a reversal of removal.
14 Camshaft oil seals -
renewal
4
Note: The use of an oil seal extractor which
screws into the seal inside circumference is
preferable for this operation. These are
available at most accessory shops and can
often be hired from tool hire outlets. In the
absence of this type of tool, an alternative (but
less satisfactory) method of removal is
described in the following procedure.
1 Remove the camshaft sprockets as
described in the previous Section.
2 Undo the retaining bolts and remove the
backplate from the front or rear cylinder head
as required (see illustration).
3 The oil seals are now accessible for
removal. Punch or drill two small holes
opposite each other in the oil seal. Screw a
self-tapping screw into each hole and pull on
the screws with pliers to extract the seal.
4 Check that the housing is clean before
fitting the new seal. Lubricate the lips of the
seal and the running faces of the camshaft
with clean engine oil, then carefully locate the
seal over the camshaft and drive it squarely
into position using a tube or a socket. Take
care not to turn over the lips of the seal as it is
being fitted. Another method of fitting is to
draw it squarely into position using the
sprocket bolt and a distance piece.
5 With the seal fully inserted in its housing,
refit the backplate, then refit the camshaft
sprocket as described in the previous
Section.
15 Camshaft and hydraulic
tappets - removal, inspection
and refitting
4
Removal
1 Remove the air cleaner assembly and air
intake trunking as described in Chapter 4,
Part D.
2 Remove the camshaft covers as described
in Section 5.
3 Remove the cylinder head side covers as
described in Section 6.
4 Remove the camshaft sprocket(s) as
described in Section 13.
5 If working on the front camshaft, remove
the distributor as described in Chapter 5.
6 If working on the rear camshaft, remove the
power steering pump as described in Chapter
10.
7 Undo the retaining bolts and remove the
backplate from the front or rear cylinder head
as required.
8 Undo the ten bolts securing the oil gallery
to the camshaft carrier noting the locations of
the two short bolts (see illustration).
9 Lift off the oil gallery and recover the small
O-ring seal in the camshaft carrier (see
illustration).
10 If working on the front camshaft, undo the
two small camshaft carrier retaining bolts at
each end.
11 Lift the camshaft carriers off the cylinder
head (see illustration).
12 Carefully lift out the camshafts, marking or
labelling them FRONT or REAR as applicable
(see illustration).
13 Withdraw the oil seal off the front of the
camshaft.
14 If working on the rear camshaft, remove
the end plug from the cylinder head.
15 Obtain a compartmented box, and mark it
inlet and exhaust for each cylinder (ie 1 INLET,
1 EXHAUST, 2 INLET, 2 EXHAUST etc).
16 Lift out the slippers, tappets and
pushrods for each cylinder, in turn, and place
the components in their respective
compartments in the box (see illustration).
Inspection
17 Clean and inspect the various
components removed, for signs of excessive
wear.
18 Examine the camshaft bearing journals
and lobes for damage or obvious wear. If
evident, a new camshaft must be fitted, or one
that has been renovated by a company
2B•8 V6 engine - in-car engine repair procedures
15.12 Carefully lift out the camshafts15.11 Lift the camshaft carrier off the
cylinder head
15.9 Recover the small O-ring seal in the
camshaft carrier
15.8 Undo the ten bolts securing the oil
gallery to the camshaft carrier
14.2 Front cylinder head backplate
retaining bolts (arrowed)
1380 Rover 800 Series Remake
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