Author Topic: Screw Pivot Trunion lower bolt  (Read 1987 times)

pnw_oldmags

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Screw Pivot Trunion lower bolt
« on: April 16, 2015, 04:02:37 PM »
Anyone have four of these screw pivot lower reunion bolts for trade or sale?  Fits a 53 Willys Aero Lark.
Jim Betts  LM6945
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MarkH

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Re: Screw Pivot Trunion lower bolt
« Reply #1 on: April 16, 2015, 09:05:11 PM »
I've got good news and bad news.

The good is that you can buy that bolt cheap at any hardware store in a couple grades of hardness, 5/8ths coarse thread (3/4 for late model trunnions). Probably have to buy one over length & shorten it for a match. Drill & tap for a zerk or fill your trunnion with grease and force the grease in as you turn the new bolt in.

The bad is that the threads in your trunnion are partially buggered too and a new bolt will tighten it up some but won't restore the joint to 100%.

I may have a used set in a parts box but at best the threads will show some wear on one side.
Fully restored '54 Aero Lark
Rusty '58 Austin Healey 100-Six
Barely running'74 Chevelle Malibu

pnw_oldmags

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Re: Screw Pivot Trunion lower bolt
« Reply #2 on: April 16, 2015, 09:30:08 PM »
Pulling the Trunion in the am to inspect the threads.  Thanx
Jim Betts  LM6945
PNW Traveler Editor
CircleKF Webmaster
https://circlekf.com

Aeroman

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Re: Screw Pivot Trunion lower bolt
« Reply #3 on: April 18, 2015, 07:37:00 PM »
There are NOS trunnions availaible. John Parker had many that are now owned by Duane Hayes in Colorado. He bought them from Rudy Phillips. Dunno if they are in Colorado yet and accessible.
New lower trunnions are available for later 1952, all 1953 and the early 1954's (re-serialed) from a company called "Rare Parts" (that means you, Jim Betts) see link: http://shop.rareparts.com or call: Rare Parts Inc. 209-948-6005 / 800-621-2005. Lower trunnion is part number 15736 and upper is 15640. Your upper is probably okay, but check it anyway.
« Last Edit: April 18, 2015, 07:44:20 PM by Aeroman »
Rick Kamen
KFOCI LM4314 since 1979
Willys Aero Survival Count
aeroman@aol.com
http://clubs.hemmings.com/willysaero
1954 Willys Aero Eagle "Old Toby"
1964 Ford Econoline panel van
Once owned 11 other Willys Aeros and a Willys wagon, 2 Kaisers, 1 Henry J, plus Studebakers, Hudsons, a Nash and others.

Aeroman

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Re: Screw Pivot Trunion lower bolt
« Reply #4 on: April 18, 2015, 07:41:56 PM »
Unfortunately, the earliest Aeros and the later, Kaiser-engined Aero trunnions are not available thru Rare Parts.
Rick Kamen
KFOCI LM4314 since 1979
Willys Aero Survival Count
aeroman@aol.com
http://clubs.hemmings.com/willysaero
1954 Willys Aero Eagle "Old Toby"
1964 Ford Econoline panel van
Once owned 11 other Willys Aeros and a Willys wagon, 2 Kaisers, 1 Henry J, plus Studebakers, Hudsons, a Nash and others.

MarkH

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Re: Screw Pivot Trunion lower bolt
« Reply #5 on: April 19, 2015, 12:33:43 PM »
I ordered a pair of NOS lower trunnion & bolt sets from rareparts last year and received the 2 1/2 degree type for early '52 Aeros. At the time I think they had 50 in stock and weren't aware that there were 2 types until I asked.

Maybe stock has changed there since I ordered, it's been a while.

They will fit my early '54 but instead I'm fitting control arms that take the larger late model trunnions and my brother is machining new trunnions to work on my steering knuckles. I have no idea if the early & late model steering knuckles have the same size thread for trunnions and if these will interchange to later models.
Fully restored '54 Aero Lark
Rusty '58 Austin Healey 100-Six
Barely running'74 Chevelle Malibu