Help on a bearing sleeve for Spartan Shock Absorber

[SirLanceUK]

Having done a bit more work on my Spartan came across a Damper arm on the rear right hand side (as you look at the back door) was totally

missing. I managed to buy the arm but need to fit it between the the Armstrong Damper and the  Torsion bar. I was advised to remove one of the other Damper arms

and see how it all goes together. Unfortunately the bottom end of the rest of the Damper arms are really on there, and before I take a "larger" hammer to loosen them off,

I thought i would look at the drawings, and having done so, now need to ask for your help.

The bolt that holds the arm on to the torsion bar is UNF 5/8 IN x 5-3/16 IN long suggesting I need a bush with an ID 5/8 IN OD 1 IN and length 4 IN to

hold the 2 parts together. The diagram seems to suggest that the bush is part 21 but I think that is already in the Damper arm and has an 1 IN ID leaving me with the need

of this bush  which is not in the diagram at all.

If you look at the Messier Damper part 21 is listed as "Bearing Sleeve Copper Alloy 1 IN ID 1-1/4IN OD 1-3/4 IN O/A LG" Suggesting that a BUSH is required there

and not on the drawings either.

Now am I totally wrong ( would not surprise me) and can anyone help before I take a Larger hammer to one of the other dampers by

either telling me where i am wrong

or let me have a part number for the missing bush

or can confirm the bush size and suggest a material for it (copper Alloy is a bit vague for my metal man, who would prefer me to say

something like SAE660 Bronze Tube)

I have had a another thought maybe Part 26 (washer) does say Washer flat S PHOS 0.656 IN ID 1.125 IN OD THK 0.250 IN  45 DEG CHAMFER ON ONE OUTSIDE EDGE

and maybe you just have the chamfered edge against the inside and tighten it up and use the chamfers to keep the parts in relation to each other.

 

 

 

 

 

 

 

 

[sirhc]

The suspension training arm has a pin which the link arm (which comes fitted with the bush) slides on to.
 

Sliding them off again is easier said than done and when recovering Armstrong dampers from scrap yards in the past I have ended up cutting the link arms off as they would not budge. 
 

Be aware that for Armstrong dampers there are different length link arms as there is a longer one for use on snow.
 

The original link arm design for messier dampers has a bronze bush rather than the rubber bush, this needs regular greasing otherwise the pin wears out quickly. This was replaced with a ball joint type link arm, where the pin is removed and the link arm secured through the hole. 

[sirhc]

This photo taken from eBay shows the pin which your link arm with bush needs to slide on to.

 

[sirhc]

And this one shows the 2 types of Messier link arms.

[SirLanceUK]

Thanks for that, it's a shame the diagram does not show that bush but looking at the picture it looks like the pin is steel.

I do wonder then why they specify "cone washers" (Item 26) at each end rather than just a locknut.

[SirLanceUK]

Just thought I would update what I have found, not sure if it is right but it's what I found.

The first picture is the inboard side where you can see the bolt which then goes into cone washer, with the cone pointing outward . The second picture  shows the outboard side where you can se the cone washer, cone side pointing outward.

You can just make out the bush, or pin, ( ID 5/8 IN OD 1 IN and length 4 IN). Why do you need "cone Washers" I have no idea as you can see by the second picture the cone washer has been "pulled" in to the casting of the training arm.

I did ask a metal expert who confirmed that "copper alloy" is now Bronze (SAE660 Bronze Tube, is fine) but I am making the bush and cone washers out of stainless steel.