air bleeding JAGUAR XJ6 1994 2.G Workshop Manual

SECTION CON TENTS
Subsection Titie SRO Page
it0 IV ............ Preliminarypages .................................................................... i
4.2.1 ............. Cooling System Description ........................................................... 1
4.2.1.1 ........... Cooling System Description. Major Components .......................................... 1
4.2.1.2 ........... Cooling System Description. Components for Climate Control System ........................ 1
4.2.1.3 ........... Cooling System Description. Operation .................................................. 1
4.2.2 ............. Cooling System Configuration .......................................................... 2
4.2.3
............. Service Procedures ................................................................... 3
4.2.3.1
........... Service Procedures. Safety Precautions .................................................. 3
4.2.3.2
........... Service Procedures. Working Practices .................................................. 3
4.2.3.3
........... Service Procedures. Coolant Change .................................................... 3
4.2.4
............. Drain and Fill Procedures ............................................................. 4
4.2.4.1
........... Drain and Fill Procedures. Radiator, Drain ............................................... 4
4.2.4.2
........... Drain and Fill Procedures. Radiator, Fill ................................................. 4
* 4.2.4.3 ........... Drain and Fill Procedures. Complete System. Fill .......................................... 4
4.2.4.4
........... Drain and Fill Procedures. System. Air Bleeding ........................................... 4
4.2.5
............. Fault Diagnosis ...................................................................... 5
4.2.5.1
........... Fault Diagnosis. introduction ........................................................... 5
4.2.5.2
........... Fault Diagnosis. Diagnostic Procedures .................................................. 5
X300 VSM i Issue 1 August 1994

€3 Cooling System (V12)
4.2.4 DRAIN AND FILL PROCEDURES
4.2.4.1 Radiator, Drain
. Place a drain tray in position under the radiator drain plug
. Remove the headertank pressure cap. Release thecaptive
Tighten the radiator drain plug.
(Fig.
1).
radiator drain
plug and drain the coolant.
CAUTION: This procedure does not drain the heater cir- cuit.
m: DO NOT REMOVE THE HEADER TANK PRES- SURE CAP WHILE THE ENGINE IS HOT. IF THE
CAP MUST BE REMOVED, PROTECT THE
HANDS AGAINST ESCAPING STEAM AND
SLOWLY TURN THE CAP
ANTI-CLOCKWISE UNTIL THE EXCESS PRESSURE CAN ESCAPE.
LEAVE THE CAP IN THIS POSITION UNTIL ALL
THE STEAM AND PRESSURE HAS ESCAPED
AND THEN REMOVE THE CAP COMPLETELY.
WARNING: WHEN DRAINING THE COOLANT
WITH THE
ENGINE HOT, PROTECT ME HANDS AGAINST
CONTACT WITH HOT COOLANT.
Fig. 1
4.2.4.2 Radiator, Fill
. Add coolant until the level in the header tank is steady at MAX. (Do not fit the header tank cap).
. Switch on the ignition. (The climate control system must be OFF).
. Start the engine and add coolant to the header tank if required to ensure that it does not empty.
. Run the engine until thetemperature gauge reads normal. (The enginespeed may be raised to reduce warm uptime).
. Switch off the ignition and wait for one minute.
Check that the coolant level in the header tank is between MAX and
10 mm above MAX. Add coolant as necessary.
. Fit the header tank cap.
4.2.4.3 Complete System, Fill
. Add coolant until the level in the header tank is steady at MAX. (Do not fit the header tank cap).
= Switch on the ignition. (The climate control system must be OFF).
. Start the engine and add coolant to the header tank if required to ensure that it does not empty.
. Run the engine until the temperature gauge reads normal, (The engine speed may be raised to reduce the warm up
. Turn the climate control system ON. Set the temperature to HI. Manually select a fan speed of approximately 50%.
. Run the engine for four minutes. Ensure that the climate control system outlet air temperature is hot to very hot and
that there is no noise from the heater coolant circulating pump. (The engine speed may be raised to assist with heat- ing).
time).
8 Switch
off the ignition and wait for one minute.
. Check that the coolant level in the header tank is between MAX and 10 mm above MAX. Add coolant as necessary.
. Fit the header tank cap.
4.2.4.4 System, Air Bleeding
After filling the system with coolant, any air present must be purged before effective cooling is possible. Provided the
correct fill procedure has been followed, purging of the system takes place automatically as follows:
The air entrained by the coolant, rises to the top of the radiator and to the highest point on each side of the engine (the
thermostat housings). While the thermostats are closed, the radiator is under reduced pressure due to the pump suc
- tion and air is bled through the jiggle-pins in each thermostat. Purged air is returnedvia the bleed system to the header
tank. When normal operating temperature is reached, the thermostats open and the system operates normally. ~~
Issue 1 August 1994 4 X300 VSM

Brakes
12.4 BRAKE SYSTEM BLEEDING
WAR-: GREAT CARE MUST BE EXERCISED WHEN SERVICING OR REPAIRING THE SYSTEM. AVOID SKIN/ EYE
CONTACT OR INGESTION OF BRAKE FLUID. IF SKIN OR EYES ARE ACCIDENTALLY SPLASHED WITH
BRAKE FLUID,
RINSETHE AFFECTED AREA IMMEDIATELY WITH PLENTY OF WATER AND SEEK MEDICAL
ATTENTION. IF BRAKE FLUID IS INGESTED, SEEK MEDICAL ATTENTION IMMEDIATELY.
CAUm: Fluid must not be allowed to contact the vehicle paintwork. Remove any spilt fluid from the paintwork
by rinsing away with running water. Methylated spirit (denatured alcohol) must not be used to clean the
contaminated area.
CAUTION: Never use methylated spirit (denatured alcohol) for component cleaning purposes. Use only a proprietary
brake cleaning fluid.
WARNING : THROUGHOUT THE FOLLOWING MAINTENANCE / SERVICE OPERATIONS, ABSOLUTE CLEANLINESS
MUST BE OBSERVED TO PREVENT FOREIGN MATTER CONTAMINATING THE BRAKE SYSTEM.
12.4.1 System Bleeding - General Instructions
Use a brake bleeder bottle with a clear bleeder tube. Also recommended is a filler unit with a fill pressure of 1.0 bar. If a filler unit is not used, ensure that their is sufficient brake fluid in the reservoir throughout the bleeding procedure.
m: Always bleed the caliper furthest away from the actuation unit first. On right hand drive vehicles, bleed in the
following order: front
left (FL),front right (FR), rear left (RL) and rear right (RR). On left hand drive vehicles bleed in the following order: FR, FL, RR and RL.
12.4.2
. Ensure that the vehicle is standing level. Switch the igni-
tion off.
Check that the fluid level in the reservoir is between the min and max marks.
. Connect the bleeder bottle tube to the relevant front cali- per (see'note' above) bleeder screw (1 Fig. 1) and open the
screw.
rn Bleed until new, clear, bubble free fluid is observed in the
tube and then close the bleeder screw.
. Repeat this procedure at each remaining caliper.
With the motorrunning check brake pedal travel.
If excess- ive, check for leaks and repeat the bleed procedure.
Fill the reservoir to the max level.
System Bleeding After Brake Fluid Renewal
12.4.3 System Bleeding After Tandem Master Cylinder
Renewal
Ensure that the vehicle is standing level. Switch the igni- tion off.
rn Check that the fluid level in the reservoir is between the min and max marks.
Connect the bleeder bottle tube to the relevant front cali- per (see'note'above) bleederscrew(1 Fig. 1) and open the
screw.
Ficr. 1
X300 VSM 19 Issue 1 August 1994