Jump to content

Discovery 1 Timing Belt


Marten
 Share

Recommended Posts

I am about halfway through a complete rebuild/refurbishment of my 1992 Disco 1 and am presently re-assembling the 200Tdi engine after total strip. Now fitting the new timing belt, with new tensioner & static roller, a job I have already done several times over the life of the vehicle without difficulty. The new belt, tensioner and roller are "straight out of the box & correctly numbered" but the belt appears to be too small. With timing correct, good tooth engagement and no slack between the toothed pullys, I can fit the tensioner on its pivot pin and insert the threaded bolt only by stretching the belt excessively! Once on, the belt looks fine and I can rotate the engine easily (head still off!), but the belt tension already exceeds the specified torque reading before the tensioner is adjusted. Has anyone experienced this problem with a new belt?

Link to comment
Share on other sites

I am about halfway through a complete rebuild/refurbishment of my 1992 Disco 1 and am presently re-assembling the 200Tdi engine after total strip. Now fitting the new timing belt, with new tensioner & static roller, a job I have already done several times over the life of the vehicle without difficulty. The new belt, tensioner and roller are "straight out of the box & correctly numbered" but the belt appears to be too small. With timing correct, good tooth engagement and no slack between the toothed pullys, I can fit the tensioner on its pivot pin and insert the threaded bolt only by stretching the belt excessively! Once on, the belt looks fine and I can rotate the engine easily (head still off!), but the belt tension already exceeds the specified torque reading before the tensioner is adjusted. Has anyone experienced this problem with a new belt?

Sorry to insult but have you slackened off the three bolts in the injection pump pully to get the slack on the right side of the belt?

That said, I've had a few that have been very tight to fit but usually after about 10 or so rotations and a retension they are ok.

Link to comment
Share on other sites

Sorry to insult but have you slackened off the three bolts in the injection pump pully to get the slack on the right side of the belt?

That said, I've had a few that have been very tight to fit but usually after about 10 or so rotations and a retension they are ok.

No offence taken! A perfectly reasonable suggestion. I left the belt in place overnight and rotated the engine a couple of dozen times (oil pump is now well primed!) this morning, going through the injector timing routine several times just to be sure, as you suggest. I now start to get tensioner movement at 20nm so I can't be far off the 17mn target with no additional torque applied! Best I'll get with this belt, which is certainly on the small side compared with previous examples. Wierd! Many thanks for responding.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy