Isuzu Trooper Owners Club UK™

hobo · ** Joined: 19 May 2013 Posts: 114 Location: Iceland

I have read the workshop manual and seen that a special tool is needed, and there are some shims also.
Where do these shims go, and are there any good instructions with photos here on the website?
Is this special tool available for the avarage joe?

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handymanat39 · ** Joined: 23 Jun 2012 Posts: 60 Location: Bedford

Hi
Just in the process of taking the head off mine. There is a cap that sits ontop of the valves, the shims sit ontop of the cap and run straight from the lobes of the camshaft.
Hope that made any sense.
Andy
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Gribble · Posted: Wed Sep 04, 2013 22:47 Post subject:

You should check your current gaps before doing adjustments - then if you find the gaps are wrong you need to work out what shims you will need to get them right ,its well covered in the on line manual .

You will need some sort of tool to do the job though .
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jacksdad1963 · Posted: Wed Sep 04, 2013 22:53 Post subject:

Its pretty straighforward to do the job....as long as you read the manual! Wink

You need to follow the book when doing them (its the same procedure as most shim over bucket engines), I've got loads of spare shims, as have a few others on here: Just let us know what sizes you need Very Happy

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eithan h · Posted: Thu Sep 05, 2013 21:18 Post subject:

the tool is a claw type thing that locates under the cam shafts and you pull it down on top of the bucket/shim assy which then presses down on the valve springs opening the valves a bit, you then place a small block under the camshafts in between the claws of the tool and it sits on the edge of the shim/bucket assy. then slowly let the claw tool up and the block holds the valves open allowing you to pop the shim out.
you could also turn the engine to open the valves then place a block in there and turn the engine back, this will have the same effect

hobo · ** Joined: 19 May 2013 Posts: 114 Location: Iceland

My spare head has been pressure tested and shimmed and it´s OK.
The bad thing is that all the valves and buckets are mixed up... What do you think about that?? :/

Can I adjust the clearance on my table? Measure every gap, then unbolt the camshaft carrier, change some shims and refit.

eithan h · Posted: Tue Sep 24, 2013 18:11 Post subject:

Yes it's possible just remember the gasket between cams and head

hobo · ** Joined: 19 May 2013 Posts: 114 Location: Iceland

Yeah I remember, I replaced that gasket on my Trooper with a smear of RTV to make it stop leak oil.
I would like to do that again when I do the head change.

What about the valve and buckets mixup, Is that OK?
I will grind the old valves in the seat and check for valve stem wear.

Jiixx · Newbie Joined: 18 Dec 2021 Posts: 4 Location: Finland

Hi,

greetings from cold Finland.

My car mechanic called that he cant adjust the valves on my Isuzu Trooper ( 4jx1 motor ).

Can someone help me out to give him tools that he need and instructions?
what he complained that he cant find correct shims anywhere? where can i buy those?

I appericiate all the information you can give.

thanks.