Wedge tr7 timing support plate

[johnrip]

Does the tr7 timing support plate bolt to the camshaft sprocket? The is a drilled hole in the support plate, but I never have seen a nut to secure it. It does not show up in any of the diagrams I have seen. Anyone know?

 

[TR3driver]

If you are talking about what I think you are talking about; the support plate is only used when servicing the head without removing the timing chain. You bolt the sprocket to the support in order to keep tension on the chain, so the tensioner doesn't pop out.

For example, the Stag (which uses the same camshaft drive as the TR7) manual says under setting valve clearances :

5. On one bank; bend back tabs on lockplate, slacken bolts securing camshaft gear to camshaft.
6. Use a camshaft bearing nut to secure camshaft spigot bolt to support plate.
7. Turn the engine as required to remove the two bolts securing camshaft gear to camshaft but
do not remove last one until the line on the camshaft flange is in line with the groove in the front
bearing cap, i.e. No. 2 cylinder T.D.C. firing.
8. Remove camshaft bearing nuts, caps and lift off camshaft.
9. Remove each tappet and pallet requiring alteration to clearance. Keep in correct numbered
sequence. (Fig. 12.29)

 

[Dale]

That thing drove me nuts too, until I read the service manual under adjusting the valve clearance. The support holds the sprocket and chain so the cam can be removed to change shims.

 

[johnrip]

thank you...that makes sense!