Timing Chain Task - DOHC V6 Jaguar - Monday 3rd November 2014

Jaguar DOHC V6 (Petrol)
RHS Cam Cover Removed

Today saw a welcome return to activities after a week of half term, and it was straight back into the thick of it.  I was assigned the practice Timing Chain Task, again something I had never done before.  My initial impression from the instructions and diagram was one of confusion, however once all was explained by Julian Jones step by step, all became clear and I enjoyed the task very much indeed. Therapeutic even!  Having aligned the Crank key and RHS Cams (Inlet & Exhaust) to the correct positions I was then able to disengage the tensioner, with the aid of a pin inserted to the withdrawn plunger, remove the tensioner and then the guide, slipper and timing chain.  I then repeated the procedure to the LHS ensuring correct alignment first as per the provided instructions.  All adjustments are made from the crank with chains attached.

LHS & RHS Tensioners, Guides,
Slippers and Chains Removed

With parts removed it was time to re install, which first required the loosening of the RHS Camshaft Cap Covers, in order to be able to rotate the shafts a full 180 degrees to ensure the correct timing upon re-assembly.  With both LHS cams and the crank in the correct position I then re-fitted the timing chain as per the marked links in the chain, followed by the guide, slipper and tensioner.  With the pin removed the tension was then taken back up.  I left all torques until the end.  The same process was repeated to the RHS and, after an inspection by Julian of work completed to satisfactory standard, I was then able to torque up the camshaft caps and all other bolts to the manufacturer's specified settings.

Re-torquing LHS Camshaft
Cap Covers 

Both Chains Re-instated
(less Cam Covers)

After rotating the Crankshaft 9 times it was deemed that the procedure had been completed to standard and I was then able to re-install the cam covers and be signed off as complete.  A very enjoyable task (accompanied by my "whale song" music, according to Carl Black - on my new Tablet Distraction Device)!  Happy Days!