Jaguar XK Misc Document Poor Heater Performance PDF

Date of issue 06/97 Amended 09/01 Bulletin Number 303-11 Page 7 of 9
84. Reinstall and tighten the drain plug.
85. On XK series vehicles, install the generator-cooling duct. (Torque the generator cooling
duct securing bolt to 6 Nm)
86. For access, XK series vehicles, release and remove the air cleaner cover, mass air flow
sensor and air intake hose assembly.
87. On all vehicles, reinstall the clip on the header tank to recovery bottle hose.
Note: If the header tank to recovery bottle hose clip is damaged in any way, a
new one must be installed (Part Number JHC 501401).
88. Reconnect the recovery bottle hose to the header tank and crimp the clip securely.
Note: If difficulty is experienced in latching the clip, it may be necessary to
install a new clip.
89. Remove the hose clamp from the heater bypass hose.
90. On XK series vehicles, install the air cleaner cover, mass air flow sensor and air intake
assembly. On V8 XJ series vehicles, install the engine compartment rear cover.
The cooling system should now be filled with XLC Extended Life Coolant. See the following
Workshop Procedure for refilling process.
STEP 3: REFILLING OF COOLING SYSTEM WITH XLC EXTENDED LIFE COOLANT
Caution: Before the use of Havoline XLC Extended Life Coolant is
permitted on Jaguar vehicles (prior to VIN 042636 XK Series vehicles and
vin 878274 V8 XJ series vehicles), the flushing procedure in steps 1 and 2
must be carried out.
Note: As the cooling system cannot be fully drained, it will contain residual
water at this stage. It is therefore necessary to introduce a measured quantity
of undiluted Jaguar XLC antifreeze into the cooling system and Fill up with
plain water.
1. Remove the air purge breather cap.
2. Carefully pour 4.25 liters of Jaguar XLC antifreeze into the header tank.
Note: Only Jaguar antifreeze Havoline XLC Extended Life Coolant
(specification: WSS M 97B44-D) should be used on XK series and V8 XJ
series vehicles. Antifreeze to this specification has been used in all 2000
Model Year XK Series and V8 XJ Series vehicles and may be recognized by
its orange color.
3. Continue to add clean plain water into the header tank until the level stabilizes at the top of
the breather neck.