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Assembling rolling chassis


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Finally after a year or I am back onto reassembling my chassis on a late TR4, I have purchased new trunnions and find that the locking washer that holds the outer thrust washer won't fit on the threaded part of the new trunnion, while they slot easily onto the old trunnions, the new trunnions threaded portion seems to be slightly bigger, is this the case? What do you suggest?

The trunnions fit the vertical link fine and I have inserted all new bearing etc so everything else is ok

Do I need new locking washers ? Or do you just tighten them up and it's a really snug fit.

 

Cheers Jim

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When you say locking washers, do you mean spring or serrated style washers, and are you saying these should fit over the threaded portion of the lower trunnions. Do the two thick plain steel washers fit okay?

 

If this is the case, I would be tempted to use new lock washers anyway, to be sure they do their job, and it is not a good idea to wind on washers that are too small as it might result in thread damage.

Edited by boxofbits
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Thanks for the reply. Yes I am talking about the the serrated steel washer that fits next to the thrust washers , as you suggest I am going to order new ones from Moss rather than attempt to wind them on, before doing that however I was really wondering whether anyone else on the forum had recently installed new trunnions and had a similar issue where the threaded/ serrated portion on the trunnion seems to be just a little bigger than the original.

 

Cheers Jim

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I think Roger came across this on a TR4 fitment a while ago. could be in his mammoth tome of TR4 rebuild.

Stuart.

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Thanks Andy and Stuart I will search Rogers thread first, but will likely just order new ones from Moss. I see they list the part as different for cars after CT 7600 odd so I guess that indicates that there has been a change at some stage.

Cheers

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  • 2 weeks later...

Please Any other ideas welcome,

The new washers have arrived from Moss uk, on the site they are specified for the late tr4 but they still are very tight, and won't slide on either, interestingly they are not serrated , almost as if they have to be tightened on by pressure the first time they are used and that creates the serration.

 

Has anyone else bought new locking washers recently, what did they find, unfortunately I can't just pop down to Moss so any suggestions welcome. I have emailed Moss but also thought I would try the forum again.

 

Cheers

Edited by kiwi-jim
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Here it is Alan, The trunnions have the Serrated portion you can see on the cross bar that the lower wishbone arms slide on to . There are two thrust washers that go on, one each side of the wishbone arm, at this end next comes the locking washer I am referring to ( part No 134320). And then the lock nut holds this side all in place.

 

Hope this shows up ok

Cheers jim

Edited by kiwi-jim
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Here it is Alan, The trunnions have the Serrated portion you can see on the cross bar that the lower wishbone arms slide on to . There are two thrust washers that go on, one each side of the wishbone arm, at this end next comes the locking washer I am referring to ( part No 134320). And then the lock nut holds this side all in place.

 

Hope this shows up ok

Cheers jim

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Oh, splines, I have it now.

 

I should think all thats going on here is that the roots are bunged with rust.

 

I'd have these is phosphoric acid which will bring the shape back.

You could pick them out with a scalpel or other blade probably.

 

The new washere are I expect sized so as to form when pressed on to a clean spline.

They might jam on yours.

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Hi Jim,

as mentioned above. I foolishly made my lock washers bigger thinking that Moss had struck again.

However my brain eventually engaged. The washer is squished over the spline and thus stops it rotating.

 

It really will fit.

I think I did mention this in my epic hairy elephant of a rebuild. (not finished yet - next spring we have the upholstery saga)

 

Roger

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That's great thanks guys, Sorry about the description as soon as I saw the word splines Alan, I realised my description was a bit lacking. I assume then that they are a very tight fit once wound on, hopefully I never have to ever get them off again.

Appreciate the replies.

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