Esteemed group,
Subject: Series 3 V12 E type
Vintage 1974
Long time customer has had us do periodic maintenance on this vehicle for years. Today's finding is a gross oil leak coming from under the outlet camshaft carrier. Instructions and illustrations from the workshop manual in removing the camshafts is not clear in showing how sprocket retaining tool JD.40 is fitted. I can not see what holds this simple looking tool in place nor do the work measures include relieving the chain tension before unbolting sprockets from camshafts??
With no prior instructions pertaining to the chain in any manner under dismantling the engine:
Step 18 states: Bend back locking tabs securing camshaft sprocket retaining bolts
Step 19: Remove 2 bolts from each sprocket
Step 20: Rotate engine until remaining 2 bolts are accessible and remove
Step 21: Fit retaining tool JD.40 to each sprocket
Step 22: Slacken off camshaft bearing cap nuts working from center outwards
Step 23: Remove camshafts
That's it!
Can anyone help me with this procedure?
Thank you!
Steve Hollis
Hollis Brothers Automotive Repair
Barrington, IL far N.W. Suburb of Chicago
847 381 6691

 

Steve the Workshop manual is clear but JD40 clips on the tab on the sprocket and prevents the cam gear from falling too far down in the well. JD40 as well as all factory tools are available for loan from the Jaguar Clubs of North America (JCNA) via the Coventry Foundation.

 

I understand and can see where the tool attaches to the sprocket but I don't understand or see how the other end attaches to those brackets inside the timing case. The pictures I've seen of the tool shows a blunt flat straight end. Are you supposed to vise grip it to those brackets - what holds it there?
Thank you for writing!
Steve Hollis

 

There are special slots on the tools plus they are not flat but actually offset to clear. You can get an idea from the tool illustration here on page 36 I think

.https://www.jcna.com/shopimages/tool...ools-1970s.pdf

 

I was there already and the same picture as I've been seeing - clearly, you can see there isn't any attachable slot, hole, tab, etc. at other end of tool. I need someone to read my post who has a clue of what I am asking.
again, thanks for trying to help me!
Steve Hollis

 

I hope someone does help you. Having done the work several times using JD40 and the other tools necessary for the job just must have been lucky---best of luck!