Rear bogie thrust washers

[russ harms]

Hi Guys,

I found something unusual when tearing down the rear suspension: someone
in the past replaced the stock steel-backed bronze thrust packs with needle
bearing thrust washers. They also used a "quad ring "as a grease seal.
A quad ring is like an "o ring" except the cross section is four
leaf cover-like, if that makes sense.

My question is: has anyone run into this before? how well does
it work? the roller bearings are rated @ 23,000 lbs static and 4,200 lbs
dynamic load. max RPM : 7,700.

Russ Harms

 

[john szalay]

> Hi Guys,
> is four leaf cover-like, if that makes sense.
> My question is: has anyone run into this before? how well does it work?
>the roller bearings are rated @ 23,000 lbs static and 4,200 lbs dynamic
>load. max RPM : 7,700. Russ Harms

When I rebuilt ours I used the roller bearing thrust washers. the orginial
"bronze" washers were totaly destroyed. and I wanted something that I could
adjust to allow for wear. I was unaware that there may have been a "offical"
fix on the thrust washers, its just something I thought would work better
than the orginial design. another thing I did was hard faced the worn pins
rather than replace them. ( when I rebuilt the bogies, the pins were on the
"well, someday we''l make more of them" list.
after I hardfaced them, I reground them to spec.. also machined new bronze
bushings with extra surface area to increase the load bearing surface.
this along with the "moly" EP grease, I feel has helped keep the bogies tight
since the rebuild.

John & Brenda Szalay
73 GMC PD.