1997 JAGUAR XJ6 height adjustment

12Remove the four bolts in each camshaft
inner sprocket (see illustration). The bolts are
secured by sheetmetal “washer” plates. Bend
down the locking tabs with a hammer and
screwdriver tip to remove the bolts.
Caution: Stuff rags below the sprockets
while removing the bolts to prevent a bolt
from falling down into the front cover.
13Remove the two bolts retaining the upper
chain guide to the cylinder head (see
illustration).
14Pull the inner sprockets from each
camshaft (see illustration). Each camshaft
sprocket is comprised of an inner and outer,
each with a set of fine splines that lock them
together. The outer sprockets, with the teeth,
can rotate on the camshafts until the inner
sprocket bolts are tightened.
15Pull the outer sprockets from the
camshafts and allow the chain slacken.
16At this point the camshafts can be
carefully lifted straight up and off the cylinder
head. Take care not to nick any of the lobes or
journals during removal.
17Use a magnet to remove the lifters,
keeping them in order in a divided, numbered
box (see illustration). They must be returned
to their original location if reusing the original
camshafts!
18Removing the lifters exposes the
adjusting shims, sitting in a pocket in eachvalve spring retainer (see illustration). Keep
the shims with their matching lifters. Measure
the thickness of each shim with a micrometer
and record the measurements.
Inspection
19After the camshaft has been removed
from the engine, cleaned with solvent and
dried, inspect the bearing journals for uneven
wear, pitting and evidence of seizure. If the
journals are damaged, the bearing surfaces in
the cylinder head and caps may be damaged
as well, requiring renewal of the cylinder head.
20Measure the bearing journals with a
micrometer to determine if they are excessivelyworn or out-of-round (see illustration).
Compare the measurements to Specifications.
21Check the camshaft lobes for heat
discolouration, score marks, chipped areas,
pitting and uneven wear. Measure the lobe
heights with a micrometer and record the
measurements (see illustrations). If there is
variance of more than 0.005-inch, the
camshaft and lifters must be renewed. If the
lobes are in good condition, the camshaft can
be reused.
22Inspect the top, bottom and side surfaces
of the lifters for wear, grooving or scoring. If
the lifters are damaged, the camshaft and its
lifters must be renewed as a set.
Engine in-car repair procedures 2A•11
2A
10.13 Remove the two bolts and the upper
timing chain guide (arrowed)10.14 Pull the inner sprocket from the
outer sprocket of each camshaft
10.17 A magnet can be used to remove
the lifters (arrowed)10.18 The valve adjustment shims
(arrowed) fit into a pocket in the valve
spring retainer - use a magnet to remove
the shims and keep them with their
respective lifters10.20 Measure the bearing journals with a
micrometer to check diameter - measure
at several places around the journal to
check for taper or out-of-round
3261 Jaguar XJ6 10.12 Bend back the locking tabs
(arrowed) and remove the camshaft
sprocket bolts
10.21a Measure the camshaft lobe at its
greatest dimension . . .10.21b . . . and subtract the camshaft lobe
diameter at its smallest dimension to
obtain the lobe lift

and installed on a new or rebuilt pump. (This
procedure requires special tools, and the
height of the driven coupling on the shaft
must be set with a depth gauge.)
6Refitting is the reverse of removal. Study
the accompanying photos carefully before
reattaching the adapter to the auxiliary shaft
housing (see illustrations). Be sure to tighten
the fasteners securely.
7Top up the fluid level in the reservoir (see
“Weekly checks” for vehicles with a separate
power steering system, or Chapter 1 for
vehicles with a power hydraulic system) and
bleed the system (Section 19).
19 Power steering system-
bleeding
1
1To bleed the power steering system, begin
by checking the power steering fluid level and
adding fluid if necessary (see “Weekly checks”
or Chapter 1, dependent on system fitted).
2Raise and support the front of the vehicle
on axle stands.
3Turn the steering wheel from lock-to-lock
several times and recheck the fluid level.
4Start the engine. Turn the steering wheel
from lock-to-lock again (three or four times)
and recheck the fluid level one more time.
5Lower the car to the ground. Run the
engine and again turn the wheels from lock-
to-lock several more times. Set the wheels
straight ahead and recheck the fluid level.
20 Wheels and tyres-
general information
1All vehicles covered by this manual are
equipped with steel belted radial tyres. Use ofother size or type of tyres may affect the ride
and handling of the vehicle. Don’t mix
different types of tyres, such as radials and
bias belted, on the same vehicle as handling
may be seriously affected. It’s recommended
that tyres be replaced in pairs on the same
axle, but if only one tyre is being replaced, be
sure it’s the same size, structure and tread
design as the other.
2Because tyre pressure has a substantial
effect on handling and wear, the pressure on
all tyres should be checked at least once a
month or before any extended trips (see
Chapter 1).
3Wheels must be replaced if they are bent,
dented, leak air, have elongated bolt holes,
are heavily rusted, out of vertical symmetry or
if the wheel nuts won’t stay tight. Wheel
repairs that use welding or peening are not
recommended.
4Tyre and wheel balance is important in the
overall handling, braking and performance of
the vehicle. Unbalanced wheels can adversely
affect handling and ride characteristics as well
as tyre life. Whenever a tyre is installed on a
wheel, the tyre and wheel should be balanced
by a workshop with the proper equipment.
21 Wheel alignment-
general information
A wheel alignment refers to the adjustments
made to the wheels so they are in proper
angular relationship to the suspension and the
ground. Wheels that are out of proper
alignment not only affect vehicle control, but
also increase tyre wear. The alignment angles
normally measured are camber, caster and
toe-in (see illustration). Front-wheel toe-in and
caster are adjustable; camber is not adjustable.
Suspension and steering systems 10•11
10
3261 Jaguar XJ6 18.6a This driven coupling is the reason
you can’t remove the adapter from the
pump at home; this requires special tools,
and the coupling must be installed on the
shaft of the new or rebuilt pump at a very
precise height - if you try to pry off the
coupling, you will damage it
18.6b The coupling disc fits onto the
driven coupling on the pump side . . .18.6c . . . and on the drive coupling on the
auxiliary shaft side; note that the two lugs on
each drive coupling fit into their
corresponding slots in the coupling disc,
180° apart - all four lugs must be properly
engaged or you won’t be able to bolt the
adapter to the auxiliary shaft housing
21.1 Front end alignment details
A minus B = C (degrees camber)
E minus F = toe-in (measured in inches)
G - toe-in (expressed in degrees)

which are located on the inside of the bonnet
must first be loosened to allow correct
alignment of the bonnet.
8Fore-and-aft and side-to-side adjustment
of the bonnet is done by moving the bonnet in
relation to the hinge plates after loosening the
bolts.
9Scribe or trace a line around the entire
hinge plate to judge the amount of movement.
10Loosen the nuts or bolts and move the
bonnet into correct alignment. Move it only a
little at a time. Tighten the hinge bolts or nuts
and carefully lower the bonnet to check the
alignment.
11After the bonnet has been aligned
properly with the cowl and front wings, the
height and position of the bonnet striker
assembly should be adjusted to provide
positive engagement with the latch assembly
(see illustration).
12Adjust the bonnet bumpers on the wings
so the bonnet is flush with the wings when
closed (see illustration).13The bonnet latch assembly, as well as the
hinges, should be lubricated with white lithium-
base grease to prevent sticking and wear.
11 Bonnet release latch and
cable- removal and refitting
2
Latch
1Disconnect the bonnet release cables by
removing the cable retaining bolts and
disengaging the cable from the latch
assembly.(see illustration).
2Scribe a line around the latches to aid
alignment when refitting, then detach the
retaining bolts from the inner footwell (see
illustration)and remove the latch.
3Refitting is the reverse of removal.
Cable
4Disconnect the bonnet release cable as
described in (Section 11).5Detach all cable retaining clips located in
the engine compartment.
6Working in the passenger compartment,
remove the driver’s side kick panel surrounding
the bonnet release lever. Pull the release lever
forward and detach the release cables from the
handle and bracket assembly (see illustration).11.6 Remove the driver’s side kick panel
to access the bonnet release cables from
the passenger compartment
11•4 Bodywork and fittings
3261 Jaguar XJ6 10.11 Adjust the position of the bonnet striker by loosening the
locknut (A), then adjust the height of the bonnet striker (B) by
turning it in or out with a screwdriver
10.12 Remove the rubber bumper then loosen the locknut (A) -
adjust the bonnet bumper bolt (B) in or out so the bonnet is flush
with the wings in the closed position
11.1 Remove the cable retaining bolt(s) (arrowed) then disengage
the cable from the latch assembly11.2 Bonnet latch retaining bolts (arrowed) are located on both
sides of the engine compartment