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steering relay arm rehab [message #90566] Wed, 30 June 2010 17:40 Go to next message
hertfordnc is currently offline  hertfordnc   United States
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It looks pretty similar to the GMC part sold by Jim K.

It uses a rubber bushing with no grease fitting. That's the part that wore out.

A machinist has it now and we are discussing the best repair.

He can make a bushing of rubber or nylon but I'd like to understand why they didn't use a metal bushing in the first place?
I'm sure there's a good reason but I'd like to understand.

Dave







Dave & Ellen Silva Hertford, NC 76 Birchaven, 1-ton and other stuff Currently planning the Great american Road Trip Summer 2021 It's gonna take a lot of Adderall to get this thing right.

[Updated on: Wed, 30 June 2010 17:41]

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Re: steering relay arm rehab [message #90570 is a reply to message #90566] Wed, 30 June 2010 17:52 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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hertfordnc wrote on Wed, 30 June 2010 18:40

It looks pretty similar to the GMC part sold by Jim K.

It uses a rubber bushing with no grease fitting. That's the part that wore out.

A machinist has it now and we are discussing the best repair.

He can make a bushing of rubber or nylon but I'd like to understand why they didn't use a metal bushing in the first place?
I'm sure there's a good reason but I'd like to understand.

Dave

Dave,

The original pressed in rubber bushing would not wear because it simply flexed as much as required - for about the first decade. Then it got hard and didn't flex and started to wear.

If you install a rubber bushing that is not bonded to both parts it will wear. If you get a bronze bushing fit with a grease fitting, you will have one more place to grease and it will only last as long as you remember to lubricate it regularly.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: steering relay arm rehab [message #90572 is a reply to message #90570] Wed, 30 June 2010 18:20 Go to previous messageGo to next message
hertfordnc is currently offline  hertfordnc   United States
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Thank you. That makes perfect sense. I'll just go with rubber.

And now that I understand it i can replace it myself. The insides were a total mystery until i put heat on it and flaming goo came out.

dave

Dave & Ellen Silva Hertford, NC 76 Birchaven, 1-ton and other stuff Currently planning the Great american Road Trip Summer 2021 It's gonna take a lot of Adderall to get this thing right.

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Re: [GMCnet] steering relay arm rehab [message #90584 is a reply to message #90566] Wed, 30 June 2010 19:12 Go to previous messageGo to next message
Charles is currently offline  Charles   United States
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If your talking about the relay lever you might look at what Dave Lenzi
does to them. There is a picture on his vendor site.
http://www.bdub.net/lenzi/index.html#RelayLever
Charles
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Re: steering relay arm rehab [message #90588 is a reply to message #90566] Wed, 30 June 2010 19:47 Go to previous messageGo to next message
carnutbill is currently offline  carnutbill   United States
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this link shows one arm with a brass bushing & one with what looks like nylon bushing http://www.gmcmhphotos.com/photos/showgallery.php?cat=5208 bill

75pb

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Re: steering relay arm rehab [message #90606 is a reply to message #90572] Wed, 30 June 2010 23:47 Go to previous message
Ken Burton is currently offline  Ken Burton   United States
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How about making the bushing out of Urethane. If it works for control arms, it ought to work for the relay lever.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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