Jeremy, All the selectors use "ball bearings" but as check valves, not O-rings. Some check valves can't be rebuilt, because they used a special rubber seal, that is no longer available. The later checkvalves have a teflon seal, that can be resurfaced, or replaced, as I understand it. Many owners can replace the O-rings, and rebuild the valve, and clean the check valves, under supervision of an A&P. There is no O-ring kit, and no check valve kit available, to do and easy rebuild. There is not even a parts call-out available. There are different models of the selector, installed on 235's. The O-ring sizes are different from model to model. -Ron Brown ----- Original Message ----- From: Jeremy Roberts To: pa28235@xxxxxxxxxxxxx Cc: Reinhold Strnat Sent: Thursday, February 07, 2002 7:46 PM Subject: [PA28235] Re: 1964 235 Fuel Selector rebuild - any suggestions For you other early 235 users, here's what I found out about the fuel selector rebuilds. B&S Aircraft have not been able to successfully rebuild the fuel selector in the earliest models (PN# 1H10), it keeps leaking. Apparently it uses ball bearings rather than o-rings - and basically, they won't accept the part. They are much more enthusiastic rebuilding a later model (PN#1H26-4). As far as prices go, Wentworth had one available for about $500 and B&S Aircraft estimate $700 to rebuild. Of course one could just take the replacement from Wentworth (or anyone else for that matter) and install it, but that's somewhat of a gamble. My local Piper parts supplier estimated a new part at around $3000 and thought it would take 2-3 mos to arrive. N8777W Jeremy Roberts NAREX Inc. 801.284.5989 801.284.5987 fax 801.230.0001 cell www.narex.com -----Original Message----- From: David C. [mailto:david@xxxxxxxxxxx] Sent: Wednesday, February 06, 2002 10:39 AM To: pa28235@xxxxxxxxxxxxx Subject: [PA28235] Re: 1964 235 Fuel Selector rebuild - any suggestions On our former '64. we got a newer rebuildable valve from Wentworth which B&S rebuilt. The older valves cannot be rebuilt. Installing the new valve required shortening the fuel line from the fuel pump (as the mechanic explained it). I use the old fuel valve for a door stop. -----Original Message----- From: pa28235-bounce@xxxxxxxxxxxxx [mailto:pa28235-bounce@xxxxxxxxxxxxx]On Behalf Of Jeremy Roberts Sent: Wednesday, February 06, 2002 8:10 AM To: pa28235@xxxxxxxxxxxxx Subject: [PA28235] 1964 235 Fuel Selector rebuild - any suggestions My 64 235 has the seemingly typical problem of a leaky fuel selector. B&S Aircraft is the source usually recommended for rebuilds - however they haven't had success rebuilding this particular selector model (PN# 1 H 10). Do any of you have any suggestions where else I can try for a rebuild.? I'd hate to think I have to buy a new one. Thanks N8887W Jeremy Roberts NAREX Inc. 801.284.5989 801.284.5987 fax 801.230.0001 cell www.narex.com