1994 JAGUAR XJ6 Workshop Manual

i Introduction
GLOSSARY OF TERMS
0 [if applicable)
ss
Term(s) term(s) (or Eng-
lish Equivalent)
part of the shift mechanism of a manual selectorfork
transmission, mounted on the shift rail, and
relaying movement in the shift lever to the
sleeve coupling which moves gears in and
out of engagement
rail which carries the shift fork
controls shifting in an automatic
transmission
part engine, usually the cylinder block, short engine
crankshaft
I connecting rod I piston
assemblv. suDDlied as a reconditioned unit selector
rod
shift
fork
an undesirable connection between a
(usually electrical) circuit and any other point
in
-line engine which is mounted in the
vehicle at an angle from the perpendicular, as
AJ6
shift rail
shift
solenoid
inclined engine
short
block
SRCM
SIG RTN
short circuit
sun roof
sun roof control
module
slant engine
buffer block, usually of a rubber compound,
which fits between the axle and the body unit,
and absorbs any excess travel
device consisting of an electrical coil which,
when energized, produces a magnetic field
in
a plunger which is pulled to a central
position. A solenoid may be used as an
actuator
in a valve or switch
SAE
sliding roof
sliding roof control module
ci rcl
ip
bump stop
signal return
sc
snap ring
ing brake
brake lamp
sulphur,
-ic
an intake system which utilizes a
snubber
SCB
SRS
Society of Automotive Engineers
solenoid
supercharger (mechanically driven device
that pressurizes intake air, thereby increasing
density of charge air and the consequent
power output from a given displacement)
airbag restraint system for driver and front
splash
guard
speed
Speed Control Control Module
square centimeters
stabilizer bar
standard
station wagon
stop lamp
sulfur, sulfuric
supercharger
- - __. . . . ... - . Supercharger Bypass
Supplementary Restraint System Abbreviation
I Definition 1 Previously used
I mud flap
I the
magnitude of velocity (regardless of I I direction)
SCCM
I Module controlling Speed Control System I Cruise Control
cm2
std
1 seat passenger
SP I supply port of valve I
0
0
0
Issue 1 August 1994 24 X300 VSM

Introduction i
II
Issue 1 August 1994 I 25 X300 VSM
sleeve which ensures that the sleeve and the
gear are turning at the same speed as they
mach
Term(s) Abbreviation Definition
(if applicable)
switch device
for making, breaking or changing the
connections in an electrical circuit
synchromesh synchro manual transmission mechanism consisting of
a cone shaped clutch inside a coupling Previously used
term(s) (or Eng-
lish Equivalent)
system
I. ."". *
group of interacting mechanical or electrical
components serving a common purpose

Term(s) Abbreviation Definition Previously used
(if applicable) term(s) (or Eng-
lish Equivalent)
T
tachometer
Thermal Vacuum Valve
Three
-way Catalytic Converter
Three
-way + Oxidation Catalytic
Converter TWC + OC
Throttle
------I
Throttle Body TB
Throttle Position TP
Throttle Position Sensor TPS
throw
-out bearing
throw
-out fork
tie
-rod (steering)
timing
tire
top dead center TDC
torque converter
Transmission
Transmission Control Module
Transmission Control Switch
Transmission Oil Temperature TOT
Transmission Range TR
I Transmission Speed Sensor TSS
tread
trunk
turn indicator, turn signal lamp
two cycle a
circuit that provides input for an electronic
tachometer display
controls vacuum levels or routing based on
temperature
catalytic converter that reduces the levels of
HC,
CO & NOx
catalyticconverter systemthat has both TWC
and OC. Usually secondary air is introduced
between the two catalvsts
procedure whereby the performance of a
product is measured under various
conditions - - . -. . . - . . -
a valve for regulating the supply of a fluid,
usually air or an aidfuel mixture, to an engine
device containing the throttle
interprets throttle position and movement to
identify idle, acceleration and full
-power
demands
relationship between spark plug firing and
piston position, usually expressed
in crankshaft degrees BTDC or ATDC of the
compression stroke
device which, by its design, multiplies the
torque in a fluid coupling between an engine
and transmission
device which selectively increases or
decreases the ratio of relative rotation
between its
inDut and outDut shafts
controls the shifting pattern of the
(automatic) transmission
Modifies the operation of electronically
controlled transmissions
indicates temperature
of transmission fluid
the range in which the transmission is
operating
indicates rotational speed of transmission
output shaft or turbine
shaft
track between tire contact centers; not to be
confused with tire contact tread pattern
principle of engine which fires every second
stroke of the piston cat
cat, dual bed
Throttle poten
-
tiometer, TPS, TP
clutch release
bearing
clutch release
lever
track rod
tvre
TCC, CCC, CCO,
LUS, MLUS,
MCCC
transmission
ECU
track boot, luggage
compartment
direction indica
- tor
two stroke
Issue 1 August 1994 26 X300 VSM

GLOSSARY Of
Term(s) Abbreviation Definition Previously used (if applicable) term(s) (or Eng- lish Eauivalent)
U
undercoating
unitized construction
Unit Service Manual
V
valve
valve lifter
vapor Vehicle Condition Monitor
Vehicle Emission Control
Information Label
Vehicle Service Manual
Vehicle Speed Sensor
Vehicle Identification Number
Viscositv Index
volatile
Voltage Regulator VCM
VECl Label
VSM
vss
VI N
VI
VR Service
Manual which pertains
to a major
'unit' (e.g. transmission, engine) fitted to a
Jaguar vehicle (see also Vehicle Service
Manual and Electrical Diagnostic Manual)
a device
by which the flow of liquid, gas,
vacuum or loose materials may be started,
stopped or regulated by a movable part
which opens, shuts or partially obstructs one
or more passageways or ports.
A 'Valve' is
also the movable part of such a device
in an OHC engine, the plunger fitted between
valve stem and cam lobe
instrument panel display which warns of
faults
Service Manual which pertains to a specific
family of Jaguar vehicles (see
also Unit
Service Manual and Electrical Diagnostic
Manual).
sensor which provides vehicle speed
information
number assigned to the vehicle
by the
manufacturer, primarily
for licensing and
identification purposes
(1) vaporizing at room temperature (liquid) (2) not permanent (memory)
device which regulates the variable output
voltaae of a aenerator underseal
unitary
construc
-
tion
tappet, bucket
vapour
road speed sen
- sor
Issue 1 August 1994 27 X300 VSM

Introduction
Term(s) Abbreviation Definition
(if applicable)
n GLOSSARY OF
Previously used term(s) (or Eng-
lish Equivalent)
W
Warm-up Oxidation Catalytic
Converter
Warm
-up Three-way Catalytic
Converter
watts
wet sleeve
wheelslip
Wide Open Throttle
windshield
wrist pin (also
piston pin)
XYZ
wu-oc
wu-Twc
W
WOT
catalytic converter system designed to lower
HC and CO emissions during the warm
-up
period. Usually located in or near the
exhaust manifold
catalytic converter system designed to lower
HC, CO and
NOx emissions during the
warm
-up period. Usually located in or near
the exhaust manifold
SI unit of power (1 hp = 745.7 watts)
thin walled hard metal cylinder supported at
cylinder head and crankshaft ends; in contact
with coolant wet liner
I wheelspin
full throttle
Dosition
pin which connects the connecting rod to the
piston, and permits articulation between the
two. windscreen
gudgeon pin
Issue 1 August 1994 28 X300 VSM

.
e
SECTION CONTENTS
Sub-section Title
i ................ Preliminary Page ............................................
2.1 .............. Jacking And Lifting ...........................................
2.1.1 ............. Jacking And Lifting. Safety Precautions ..........................
2.1.2 ............. Jacking And Lifting. Jacking Points ..............................
2.1.3 ............. Jacking And Lifting. Wheel Free Lift .............................
2.1.4 ............. Jacking And Lifting. Workshop Jacks ............................
2.1.4.1 ........... Jacking And Lifting. Workshop Jacks. Front - One Wheel ...........
2.1.4.2 ........... Jacking And Lifting. Workshop lacks. Front - Both Wheels ..........
2.1.4.3 ........... Jacking And Lifting. Workshop Jacks. Rear - Both Wheels ...........
2.2 .............. Vehicle Recovery ............................................
2.2.1. ............ Vehicle Recovery, General .....................................
2.2.2 .............
2.2.3 ............. Vehicle Recovery, Gear-shift Interlock - Manual Override .........
2.2.4 ............. Vehicle Recovery, Transporting .................................
2.2.5 ............. Vehicle Recovery, Towing Recovery .............................
2.2.6 ............. Vehicle Recovery, Vehicles With Defective Automatic Transmission ..
2.2.7. ............ Vehicle Recovery, Suspended Towing ...........................
2.2.8. ............ Vehicle Recovery, Rear Suspended Tow ..........................
Vehicle Recovery, Gear-shift Interlock ..........................
..
..
..
..
..
..
..
..
..
..
..
..
..
..
..
..
..
..
X300 VSM i
SRO
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
. Issue 1
Page
.... i
.... i
.... 1
.... 1
.... 1
.... 2
.... 2
.... 2
.... 2
.... 3
.... 3
.... 3
.... 3
.... 4
.... 4
.... 4
.... 5
.... 5
August 1994

ii

0 2.1 JACKING AND LIFTING
2.1.1. Safety Precautions
The following safety precautions must be observed when
raising the vehicle to perform service operations:
0 Whenever possible use a ramp or a pit in preference
to a jack, when working beneath a vehicle.
0 Never rely on a jack to support a vehicle; use axle
stands or blocks under the vehicle jacking points to
provide rigid support.
0 When working beneath a vehicle, chock the wheels in
addition to applying the handbrake.
0 Ensure that the vehicle is standing on firm, level
ground before using the jack
0 Check that any lifting equipment used has adequate
capacity for the load being lifted and is in full working
order.
2.1.2 Jacking Points
The jack provided in the vehicle toolkit engages with jacking
points situated below the body side members, in front of the
rear wheels (Fig.
1) and behind the front wheels (Fig. 2).
Fig. 1
Fig. 2
Fig. 3
2.1.3 WheeLFree L i#t
Use of a wheel-free lift is recommended for maintenance operations. Support the vehicle using lifting pads at the four
jacking points (Fig. 3).
issue 1 August 1994 X300 VSM 1