Baxi 105e leak at pump

[Subby]

Hi all. I have been to service a baxi 105e today and found a water leak at where the pump connects to the pipe leading to the heat exchanger. has anybody come across this before and know how to fix??

 

[jonnyswamp]

It'll be one of two(or both) "O" rings behind pump, unless you're unlucky and the block has plit
Drain boiler, remove pump (including body )and replace both O rings
IIRC there are 2 screws holding pump in to block, no amount of tightening of these screws will stop leak as O rings are on a male/female joint and not between 2 flat services

 

[Dotty]

Moved off open forum.

 

[Subby]

It'll be one of two(or both) "O" rings behind pump, unless you're unlucky and the block has plit
Drain boiler, remove pump (including body )and replace both O rings
IIRC there are 2 screws holding pump in to block, no amount of tightening of these screws will stop leak as O rings are on a male/female joint and not between 2 flat services

I just bought the O rings from parts center
£ 2.60 + vat EACH !!!

 

[AllyBongo]

Bought 1 Baxi fibre washer the other day for around the same price, PC's own washers didn't want to seal. I did repair a leaking pump o-ring on my own Baxi 105 a few years ago with a few good wraps of PTFE...... Probably best not doing that for a customer though!

 

[Subby]

Yip the new O rings did the trick, worth every penny!