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Petrol Tap Replacement Seals
#791912 12/03/19 7:37 am
Joined: Nov 2002
Posts: 522
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I have a large selection of Triumph petrol taps, all of which leak. These are the later lever type, not the push-pull cork seal type. Does anyone know of a source for the internal rubber seals? They are held in with a circlip. Thanks


1966 Triumph Thunderville
1970 TR6C
1972 TR6C
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Re: Petrol Tap Replacement Seals
tiger_cub #791994 12/03/19 11:00 pm
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Hi tiger_cub. In a word no. Are your leakers original tapered plug type?

The tapered plastic plugs used to be sold by dealer, but I've not seen them in years. The rubber sleeves like the modern repro use I've never seen for sale. I guess the taps are so low priced, no one is making parts.

My repro Taiwan made tap got stiff to turn. I put motor oil around snap ring & center shaft. Turned lever several times. Did this over several days. Tap started to move freely/normal again. Has stayed free moving for some months now. I expected leaking or the rubber to migrate & block passage, but so far has been good. I have clear fuel filters so can see how fast fuel flows when turning on tap after bike has set for a few days or longer. Have tested actual flow several times to prevent lack of fuel.
Don


1973 Tiger 750
Re: Petrol Tap Replacement Seals
tiger_cub #792016 12/04/19 6:55 am
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There are still to types being sold. A brass taper fit unit with an o ring seal, and the straight fit nickel coated brass type with a neoprene [soft plastic?] insert.

The brass ones can get very stiff after some time, to the point where you will bend the tap handle trying to turning. I have tried several things including lubricating and smoothing with 800 grit emery, none worked 100%.
The neoprene ones work great for years but the neoprene can swell with fuel and slowly closes off the rate of fuel getting through. To fix this you need to take the tap off and hand twist a new drill bit through the tap while it is open. this cuts the swollen part of the neoprene away and opens the tap again. You may need to do this several times over the life of the tap [maybe not, maybe yes, its hard to know, just gotta suck it and see], eventually the amount of neoprene removed affects the seal of the tap and you need to replace them.

Re: Petrol Tap Replacement Seals
tiger_cub #792074 12/04/19 11:52 pm
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They are the plated ones available under part no 83-2800/1. Thick internal seal, not an o ring. I will approach a local seal supplier.......


1966 Triumph Thunderville
1970 TR6C
1972 TR6C

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