1997 JAGUAR XJ6 brake

3261 Jaguar XJ6
Weekly checks0•15
Battery
Caution:Before carrying out any work on the
vehicle battery, read the precautions given in
"Safety first" at the start of this manual.
4Make sure that the battery tray is in good
condition, and that the clamp is tight.
Corrosion on the tray, retaining clamp and the
battery itself can be removed with a solution
of water and baking soda. Thoroughly rinse all
cleaned areas with water. Any metal parts
damaged by corrosion should be covered
with a zinc-based primer, then painted.
4Periodically (approximately every three
months), check the charge condition of the
battery as described in Chapter 5.
4If the battery is flat, and you need to jump
start your vehicle, see Roadside Repairs.
The battery is located in the left-hand,
rear corner of the engine compartment.
Check the battery terminals for signs of
corrosion and examine the battery leads
closely for signs of damage.1Check the battery lead clamps for
tightness to ensure good electrical
connections.2
Battery corrosion can be kept to a
minimum by applying a layer of
petroleum jelly to the clamps and
terminals after they are reconnected.If corrosion (white, fluffy deposits) is
evident, remove the cables from the
battery terminals, clean them with a small
wire brush, then refit them. Automotive stores
sell a tool for cleaning the battery post . . .3. . . as well as the battery cable clamps4
Bulbs and fuses
4Check all external lights and the horn. Refer
to the appropriate Sections of Chapter 12 for
details if any of the circuits are found to be
inoperative.4Visually check all accessible wiring
connectors, harnesses and retaining clips for
security, and for signs of chafing or damage.
If you need to check your
brake lights and indicators
unaided, back up to a wall or
garage door and operate the
lights. The reflected light should show if
they are working properly.
If a single indicator light, stop light or
headlight has failed, it is likely that a bulb
has blown and will need to be replaced.
Refer to Chapter 12 for details. If both stop
lights have failed, it is possible that the switch
has failed (see Chapter 9).If more than one indicator light or tail light
has failed it is likely that either a fuse has
blown or that there is a fault in the circuit.
The fuseboxes are located behind the left and
right side kick panels and in the centre
console glove box (see Chapter 12).
2
To replace a blown fuse, simply pull it out
and fit a new fuse of the correct rating
(see Chapter 12). If the fuse blows again,
it is important that you find out why - a
complete checking procedure is given in
Chapter 12.31

0•16Lubricants, fluids and tyre pressures
3261 Jaguar XJ6
Lubricants and fluids
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . Multigrade engine oil to API SG or higher (Duckhams QS, QXR, Hypergrade Plus,
Hypergrade, or 10W-40 Motor Oil)
Cooling system . . . . . . . . . . . . . . . . . . . Ethylene glycol based (phosphate free) antifreeze
(Duckhams Antifreeze and Summer Coolant)
Automatic transmission . . . . . . . . . . . . Dexron type II automatic transmission fluid (ATF) (Duckhams Uni-Matic)
Differential:
Standard differential . . . . . . . . . . . . . . SAE EP90 to API GL5 (Duckhams 80W-90S Gear Oil)
Powr-lok differential . . . . . . . . . . . . . . . SAE 90 to API GL5 (Duckhams Hypoid 90 DL)
Braking system . . . . . . . . . . . . . . . . . . . Hydraulic fluid to DOT 4 (Duckhams Universal Brake and Clutch Fluid)
Power steering (with separate reservoir) .dependent on year of manufacture and system fitted - refer to your Jaguar dealer
Power hydraulic system . . . . . . . . . . . . . Castrol or Jaguar hydraulic system mineral oil (HSMO) Refer to your Jaguar dealer
Tyre pressures
Note:Tyre pressures must always be checked with the tyres cold to ensure accuracy.
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 psi (2.3 bar)
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 psi (2.3 bar)
Note:Jaguar state that the tyre pressures maybe reduced by up to 8 psi (0.6 bar) on the front tyres and 6 psi (0.4 bar) on the rear
tyres to increase the ride comfort. This is only allowable if the vehicle is not to be driven at speeds in excess of 100 mph (160 kmh);
if speeds are to exceed this, the tyres must be run at the specified pressures.
Oils perform vital tasks in all engines. The
higher the engine’s performance, the greater
the demand on lubricants to minimise wear as
well as optimise power and economy.
Duckhams tailors lubricants to the highest
technical standards, meeting and exceeding
the demands of all modern engines.
HOW ENGINE OIL WORKS
• Beating friction
Without oil, the surfaces inside your engine
which rub together will heat, fuse and quickly
cause engine seizure. Oil, and its special
additives, forms a molecular barrier between
moving parts, to stop wear and minimise heat
build-up.
• Cooling hot spots
Oil cools parts that the engine’s water-based
coolant cannot reach, bathing the combustion
chamber and pistons, where temperatures
may exceed 1000°C. The oil assists intransferring the heat to the engine cooling
system. Heat in the oil is also lost by air flow
over the sump, and via any auxiliary oil cooler.
• Cleaning the inner engine
Oil washes away combustion by-products
(mainly carbon) on pistons and cylinders,
transporting them to the oil filter, and holding
the smallest particles in suspension until they
are flushed out by an oil change. Duckhams
oils undergo extensive tests in the laboratory,
and on the road.
Engine oil types
Mineral oilsare the “traditional” oils,
generally suited to older engines and cars not
used in harsh conditions. Duckhams
Hypergrade Plus and Hypergradeare well
suited for use in most popular family cars.
Diesel oilssuch as Duckhams Dieselare
specially formulated for Diesel engines,
including turbocharged models and 4x4s.
Synthetic oilsare the state-of-the-art in
lubricants, offering ultimate protection, but at
a fairly high price. One such is Duckhams QS,
for use in ultra-high performance engines.
Semi-synthetic oilsoffer high performance
engine protection, but at less cost than full
synthetic oils. Duckhams QXRis an ideal choice
for hot hatches and hard-driven cars.
For help with technical
queries on lubricants,
call Duckhams Oils
on 0181 290 8207
Choosing your engine oil
Note: It is
antisocial and
illegal to dump oil
down the drain.
To find the
location of your
local oil recycling
bank, call this
number free.

3261 Jaguar XJ6
1
Chapter 1
Routine maintenance and servicing
Air cleaner element renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Automatic transmission fluid and filter renewal . . . . . . . . . . . . . . . . . 26
Automatic transmission fluid level check . . . . . . . . . . . . . . . . . . . . . 8
Battery check and general information . . . . . . . . . . . . . . . . . . . . . . . 6
Brake fluid renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Braking system - general check and adjustment . . . . . . . . . . . . . . . 11
Coolant renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Crankcase ventilation system check . . . . . . . . . . . . . . . . . . . . . . . . . 20
Differential oil level check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Differential oil renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Drivebelt check and renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Engine oil and filter renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Exhaust system check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Front wheel alignment check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Front wheel bearing check and adjustment . . . . . . . . . . . . . . . . . . . 22Fuel filter renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Handbrake shoes check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Headlight beam check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Hose and fluid leak check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ignition system check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Intensive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Power hydraulic system fluid level check . . . . . . . . . . . . . . . . . . . . . 5
Propshaft check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Road test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Seat belt check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Spark plug check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Spark plug renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Steering and suspension check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1•1
Contents
Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,
suitable for competent
DIY mechanic
Difficult,suitable for
experienced DIY
mechanicVery difficult,
suitable for expert DIY
or professional
Degrees of difficulty
54321

Lubricants and fluids
Refer to “Weekly checks”
Capacities
Engine oil
Including oil filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 litres
Cooling system
All models (approximate):
From dry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.8 litres
Drain and refill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 litres
Transmission
Automatic transmission (approximate):
From dry:
3.2 litre model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.4 litres
3.6 and 4.0 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 litres
Drain and refill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 litres
Differential
All models (approximate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 litres
Cooling system
Antifreeze mixture:
50% antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protection down to -37°C (5°F)
55% antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protection down to -45°C (-22°F)
Note:Refer to antifreeze manufacturer for latest recommendations.
Ignition system
Spark plugs:
Type:
3.2 litre model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RC12YCC
3.6 and 4.0 litre models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RC9YCC
Electrode gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9 mm
*The spark plug gap quoted is that recommended by Champion
for their specified plug listed above. If spark plugs of any other type
are to be fitted, refer to their manufacturer’s recommendations.
Engine firing order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-3-6-2-4
Distributor rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clockwise
Ignition timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Chapter 5
Brakes
Disc brake pad friction material minimum thickness:
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0 mm
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 mm
Handbrake shoe friction material minimum thickness . . . . . . . . . . . . . . 1.5 mm
Handbrake adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 to 5 clicks
Torque wrench settingsNm lbf ft
Automatic transmission sump pan bolts . . . . . . . . . . . . . . . . . . . . . . . . 8 6
Automatic transmission dipstick tube nut . . . . . . . . . . . . . . . . . . . . . . . 20 15
Spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 to 28 17 to 21
Wheel nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 75
1•2Servicing specifications
3261 Jaguar XJ6
Cylinder location and distributor rotation

The maintenance intervals in this manual are provided with the
assumption that you, not the dealer, will be carrying out the work.
These are the minimum maintenance intervals recommended by us for
vehicles driven daily. If you wish to keep your vehicle in peak condition
at all times, you may wish to perform some of these procedures moreoften. We encourage frequent maintenance, because it enhances the
efficiency, performance and resale value of your vehicle.
When the vehicle is new, it should be serviced by a factory-
authorised dealer service department, in order to preserve the factory
warranty.
Maintenance schedule 1•3
1
3261 Jaguar XJ6
Weekly, or every 250 miles (400 km)
m mCarry out all the operations given in “Weekly
checks”at the start of this manual.
m
mRenew the fuel filter (Section 18)
m mCheck the ignition system components (Section 19)
m mCheck the crankcase ventilation system
(Section 20)
m mCheck the condition and tension of the drivebelt(s)
(Section 21)
m mCheck the front wheel bearing adjustment and
repack with grease (Section 22)
m mCheck the propshaft fasteners are tightened to the
specified torque (Section 23)
m mCheck the front wheel alignment (Section 24)
m mCheck the headlight beam alignment (Section 25)
Every 7500 miles (12 000 km)
or 6 months, whichever comes first
In addition to the operations listed previously, carry out the following:
m mRenew the engine oil and filter (Section 3)
m mCheck the spark plugs (Section 4)
m mCheck the power hydraulics fluid level (Section 5)
m mCheck the battery (Section 6)
m mCheck all pipes and hoses for signs of damage or
leakage (Section 7)
m mCheck the automatic transmission fluid level
(Section 8)
m mCheck the differential oil level (Section 9)
m mCheck the condition of the exhaust system
(Section 10)
m mCheck the brake pads and discs for wear and
adjust the handbrake (Section 11)
m mCheck the steering and suspension components
for wear or damage and check the wheel nuts are
tightened to the correct torque (Section 12)
m mCheck the condition of the seat belts (Section 13)
m mLubricate all locks and hinges, and exposed cables
(Section 14)
m mCarry out a road test (Section 15)
Every 2 years, regardless of mileage
m
mRenew the coolant (Section 30)
Every 60 000 miles (96 000 km)
In addition to the operations listed previously, carry out the following:
m
mCheck the handbrake shoes for wear (Section 29)
Every 30 000 miles (48 000 km)
or 2 years, whichever comes first
In addition to the operations listed previously, carry out the following:
m mRenew the automatic transmission fluid and filter
(Section 26)
m mRenew the differential oil (Section 27)
m mRenew the brake fluid (Section 28)
Every 15 000 miles (24 000 km)
or 12 months, whichever comes first
In addition to the operations listed previously, carry out the following:
m mRenew the spark plugs (Section 16)
m mRenew the air cleaner element (Section 17)

1•4Maintenance - component location
3261 Jaguar XJ6
1 Battery
2 Oil filler cap
3 Engine oil dipstick (not visible)
4 Automatic transmission
dipstick (not visible)
5 Brake fluid reservoir
6 Coolant reservoir
(expansion tank)
7 Air cleaner housing
8 Upper radiator hose
9 Spark plugs
10 Distributor
11 Windscreen washer fluid
reservoir
12 Power hydraulic system fluid
reservoir
13 Power steering fluid reservoir
Underbonnet view from the left-hand side of the vehicle Underbonnet view from the right-hand side of the vehicle
1 Battery
2 Oil filler cap
3 Engine oil dipstick (not visible)
4 Automatic transmission
dipstick (not visible)
5 Brake fluid reservoir
6 Coolant reservoir (expansion
tank)
7 Air cleaner housing
8 Upper radiator hose
9 Spark plugs
10 Distributor
11 Windscreen washer fluid
reservoir
12 Power hydraulic system fluid
reservoir
13 Power steering fluid reservoir

Maintenance - component location 1•5
1
3261 Jaguar XJ6
Front underbody view
1 Air conditioning compressor
2 Drivebelts
3 Anti-roll bar
4 Alternator
5 Lower radiator hose
6 Lower control arm
7 Steering gear boot
8 Steering gear
9 Engine sump drain plug
10 Exhaust system
11 Outer tie-rod end
Rear underbody view (typical)
1 Rear suspension control arms
2 Differential drain plug
3 Differential filler plug
(not visible)
4 Exhaust pipe
5 Driveshaft
6 Silencers
7 Handbrake cable
8 Fuel filter

5 Power hydraulic system
fluid level check
1
Caution: Use only Castrol or Jaguar
hydraulic system mineral oil (HSMO) in the
power hydraulic system (available at
Jaguar dealer service departments).
1The power hydraulic system controls the ride
levelling and the brake servo systems. The
fluid reservoir also supplies the power
steering system on some models. The level
of the fluid should be carefully maintained. Low
fluid levels can adversely affect the riding and
braking capabilities of your vehicle. The power
hydraulic system fluid reservoir is located on
the right inner wing of the engine compartment.
1988 and 1989 models
2The fluid level can easily be checked by
viewing the reservoir sight glass. A green
indicator in the sight glass indicates an OK
condition, while a red indicator in the sight glass
requires fluid to be added (see illustration).
3If additional fluid is required, pop open the
plastic tab located on top of the reservoir cap
(see illustration).
4Insert the mineral oil dispensing tube into
the reservoir filler hole. Push down and turn
until the dispensing tube is locked in place.
5Add fluid until the green indicator in the
sight glass appears, then release the
dispensing tube by pushing downward and
turning the opposite direction of refitting.
1990 to 1994 models
6The fluid level can be checked by removing
the cap and observing the level of fluid on the
dipstick.
7Wipe off the fluid with a clean rag, reinsert
it, then withdraw it and read the fluid level
(see illustration). The dipstick is marked so
the fluid can be checked either cold or hot.
The level should be at the HOT mark if the
fluid was hot to the touch. It should be at the
COLD mark if the fluid was cool to the touch.
At no time should the fluid level drop below
the add mark.8If additional fluid is required, pour the
specified type directly into the reservoir, using
a funnel to prevent spills.
6 Battery check
and general information
1
Warning: Certain precautions
must be followed when working
with the battery. Hydrogen gas,
which is highly flammable, is
always present in the battery cells, so don’t
smoke, and keep naked flames and sparks
away from the battery. The electrolyte in
the battery is actually dilute sulphuric acid,
which will cause injury if splashed on your
skin or in your eyes. It will also ruin clothes
and painted surfaces. When removing the
battery cables, always detach the negative
cable first and hook it up last!1A routine preventive maintenance program
for the battery in your vehicle is the only way
to ensure quick and reliable starts. But before
performing any battery maintenance, make
sure that you have the proper equipment
necessary to work safely around the battery
(see illustration).
2There are also several precautions that
should be taken whenever battery
maintenance is performed. Before servicing
the battery, always turn the engine and all
accessories off and disconnect the cable from
the negative terminal of the battery.
3The battery produces hydrogen gas, which
is both flammable and explosive. Never create
a spark, smoke or light a match around the
battery. Always charge the battery in a
ventilated area.
4Electrolyte contains poisonous and corrosive
sulphuric acid. Do not allow it to get in your
eyes, on your skin or on your clothes, and
Every 7500 miles or 6 months 1•9
1
5.2 The power hydraulic system reservoir
is located on the right-hand inner wing -
to check the fluid level on 1988 and 1989
models simply look through the sight glass
and note the colour of the indicator5.3 To add fluid, remove the filler hole
dust cap (arrowed)5.7 On 1990 and later models remove the
cap and check the fluid level on the dipstick
6.1 Tools and materials required for
battery maintenance
1 Face shield/safety goggles - When
removing corrosion with a brush, the
acidic particles can fly up into your eyes
2 Baking soda - A solution of baking soda
and water can be used to neutralise
corrosion
3 Petroleum jelly - A layer of this on the
battery posts will help prevent corrosion
4 Battery post/cable cleaner - This wire
brush cleaning tool will remove all traces
of corrosion from the battery posts and
cable clamps
5 Treated felt washers - Placing one of
these on each post, directly under the
cable clamps, will help prevent corrosion
6 Puller - Sometimes the cable clamps are
difficult to pull off the posts, even after the
nut/bolt has been completely loosened.
This tool pulls the clamp straight up and
off the post without damage
7 Battery post/cable cleaner - Here is
another cleaning tool which is a slightly
different version of number 4 above, but
it does the same thing
8 Rubber gloves - Another safety item to
consider when servicing the battery;
remember that’s acid inside the battery!
3261 Jaguar XJ6