After delaying the inevitable I finally parked my car up on the hoist and got to work on replacing all four chains, tensioners , guides and all associated gaskets .

Before starting I made sure I had the specific tool for locking the camshafts in position, the tool for applying tension to the exhaust cam (upper chain) and the correct bit for locking the crank in place (done through the crank position sensor opening)

With the kit I purchased a TSUBAKI timing kit although I used most of the components I had to source down another crank seal and primary guides as I wasn't happy with the fit and went OEM .

Feel free to ask any questions



Chain making contact with head - primary chain stretched apprx 3-4mm

Always use oem parts (TSUBAKI guides just didnt sit correctly on dowl)

Cams tensioned , timed and torqued correctly (120nm)

Timing cover , valve covers , thermostat and throttle all back on

All auxellory fitted , drive belt on
(PS pump a PITA to get back on)

Condensor, radiator , ps cooler , trans cooler , top lock and then only fluids left to complete job

 

Steve - if not too much PIA, can you list parts/PN required and what the specific tool for locking the camshafts in position, the tool for applying tension to the exhaust cam (upper chain) and the correct bit for locking the crank in place (done through the crank position sensor opening) so this can become a sticky?

 

TIMING CHAIN PARTS LIST
AJ87206 SPARK PLUG SEAL x 8
KSC145624 FRONT COVER GASKET O-RING x 2
AJ812399 VALVE COVER GASKET, RIGHT SIDE x1
AJ82875 VALVE COVER GASKET, LEFT SIDE x 1
C2A1456 TIMING CHAIN GUIDE RAIL.STRAIGHT x2
C2A1497 TIMING CHAIN GUIDE RAIL, CURVED x 2
AJ82325 LOWER CHAIN PRIMARY TENSIONER x2
C2A1511 UPPER CHAIN TENSIONER, RIGHT SIDE x1
C2A1512 UPPER CHAIN TENSIONER. LEFT SIDE x1
AJ83698 FRONT CRANKSHAFT OIL SEAL x1
AJ87245 VALVE COVER CENTER WASHER SEAL x4
AJ810631 VALVE COVER WASHER SEAL x2
AJ83699 UPPER TIMING COVER GASKET x1
AJ83700 LOWERTIMING COVER GASKET x1
XR81139 O RING SEAL, FRONT CRANKSHAFT x1
AJ82289 LOWER CRANKSHAFT TIMING CHAIN, PRIMARY x2
EAZ1286 UPPER CAMSHAFT CHAIN, SECONDARY x2
NNE2622BA VARIABLE CAMSHAFT SPLIT WASHER SEAL x4
AJ82856 SEAL,VARIABLE TIMING MODULE SPROCKET x2
KSH108624 VARIABLE CAMSHAFT O-RING SEAL x2
NCA2575CA CAM COVER ISOLATOR GROMMET x20

9pc Timing Chain Tensioner Crankshaft Alignment Tool Fit Jaguar Land Range Rover
https://www.ebay.com/itm/19324102777...MAAOSw8GNd1SKt

 

@GGG would you please add this thread to the sticky section?

 

DONE - Section 5. ENGINE with 'thanks' to Steve.
https://www.jaguarforums.com/forum/x...enance-227403/

Graham

 

My pleasure thank you

 

Surely I've missed something somewhere, but as you've the 4.2, aren't they virtually indestructible? Of course this can happen to any motor, but......

 

I've seen failed secondary tensioners on the AJ33. It's not common, but it does happen.