Fuel tap leak - repair

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woody194
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Joined: Wed Jan 22, 2014 8:26 pm
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Location: Solihull West Mids UK

Fuel tap leak - repair

Post by woody194 »

Hi all

Put the fuel tank back on at the weekend after cleaning a fitting a fuel tap service kit and it leaked
The leak was from the no serviceable seal were the tap actual rotates

The tap is assembly is no longer available

So decided to dismantle and see if I could repair see below

1) Carefully drill the rolled over section of the rivets ( do this in a pillar drill if you have use of one with the part clamped in a small vice )
I left as much of the rivet shank as poss behind as this can used to relocate the front plate and act as anti rotation

2) using a 2.5 mm drill drill down the centre of the rivet ( be careful with the one side as you can drill into the main body is you go to deep )

3) Tap a M3 thread down each hole then clean throughlly to get rig of the swarf

4) Fit a new X ring type seal I used a 25.12 ID X 1.78 Nitrile i got mine from seal force on eBay ( Part number BS022 )

5) Reassemble using M4 cap head bots I used 10mm length which seem to be OK

Tested on the bike tonight no leak :D

If anybody needs any more info let me know

Hope this helps if anybody has the same problem

Stu
Stu

Other bikes CBR1100 Blackbird & ZX7R P5

Leonardovans
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Location: Cape Town, South Africa

Re: Fuel tap leak - repair

Post by Leonardovans »

thanks for the info Stu. I assume we will all need to do this at some point.

Just a quick question. You said tap M3 holes, but that you used M4 cap head bolts. Is that a typo?

cheers
Leo
'78 CX500
http://cx500forum.com/forum/cx-custo...mer-build.html
'75 Honda CB400F0
'85 Honda NS400R NC19 Japanese Spec
'85 Honda NS400 NC19 South African Spec (Only 50 ever made 372cc)
'87 Yamaha TZR250 1KT
'95 Yamaha TZR125 4FL

woody194
Posts: 57
Joined: Wed Jan 22, 2014 8:26 pm
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Location: Solihull West Mids UK

Re: Fuel tap leak - repair

Post by woody194 »

Hi Leo

sorry yes M3 thread
Stu

Other bikes CBR1100 Blackbird & ZX7R P5

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