Fork suspension trunnion washers and O-ring
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1966 Bajaj 150
Joined: 24 Jun 2010
Posts: 469
Location: New York, NY
Tue May 01, 2012 8:12 am quote
On my VBA, I'm rebuilding the front fork with a brand new hub because the old hub was broken. I have very little clearance between the suspension trunnion Part number 35581 and the space between the hubs.

The trunnion expects 2 washers and 2 rubber o-rings but after filing down the hub, I've only made enough clearance for 1 washer. In a few days, I could potentially file enough down for the 2nd washer.

How important are those rubber o-rings for the trunnion and front suspension?

'60 Allstate VNB1, '60 GS150 VS5, '61 Cushman VBB1, '62 GS160 Mk1 VSB1, '64 GL VLA1, '74 Rally VSE1 200 Euro, '78 P200e VSX, '06 LX150
Joined: 09 Nov 2009
Posts: 814
Location: Half Moon Bay, CA
Tue May 01, 2012 8:27 am quote
Are you using the old, original washers? I would.

It is a tight fit, but the O-rings are necessary to seal out dirt.
I have a few scooters....
Joined: 08 Nov 2005
Posts: 2201
Location: San Antonio, TX
Tue May 01, 2012 9:59 am quote
+1 on the above comment. I'd leave out a washer before I'd leave out an o-ring.
1986 T5, 1971 Sprint
Joined: 30 Oct 2014
Posts: 516
Location: Oak Brook, Illinois
Sun Feb 09, 2020 9:29 am quote
A quick update
I saw this thread as I was trying to install the spring attachment with the o-rings on my sprint. I was also having trouble with the o-rings. Then I realized that if I stretched the o-rings over the shoulders of the spring attachment, I could install it with the washer then simply slide the o-rings into place.


Molto Verboso
08 GTS 250, 79 P200E, 62 Allstate
Joined: 11 Jan 2006
Posts: 1418
Location: Florence, OR
Sun Feb 09, 2020 9:35 am quote
Good one Falcon! I'll be doing this shortly.
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