Diverter nightmare 28 cdi

[zimmers]

Diverter valves on a 28cdi nightmare, ive just got home from one that i went to at 12o clock, i had the old one out by 12.15 but when i tried to get the 2 small pipes back without leaking, i had to walk away for 1/2 hour. I cant believe how awkward they are, on monday i done a 240 d/valve and i had a new extending part so in all i was there a hour. Today 4 hours and she'd been told it was a hour's work and i told her before i started i could be anything from 1/2 hour to all day depending on the way my luck is today. I have another 2 to do this week and i hope someone has found a way to do them without all this aggro. I cant handle them but when i think that ive got 4 new valves lying there and getting £300 for the job and i might get lucky, i end up doing them , any help please

 

[hi-spec plumbing heating]

hope you didn't charge 4 hours for a 1/2 job

 

[Rob]

Never had problem with leaks. Make sure you replace every single o-ring and plenty of grease on them.

Tis a time consuming and horrible job though. First one i did took a bit of working out bout 2 1/2 hours. Ever since then it usually takes around 1 1/2 hours.

Cant imagine the best quickest guys getting it done in under an hour.

 

[gas4you]

I won't touch worcesters for repairs. I always tell the customer to get a fixed price repair from WB.

 

[Gasguru]

Its not normally worth repairing the CDi's (except the 2 pump versions).

A Worcester callout is normally better value for the customer.

I know a few boilers that took Worcester 3 visits to sort out recurring leaks after a diverter swap. They design the carp, let 'em fix it.

Same with board swaps - Worcester callout best for customer.

 

[zimmers]

Thanks lads, so its not just me, i hate them.The method of rubber rings as a seal,why not jst have nut and olives

 

[Gasguru]

The method of rubber rings as a seal,why not jst have nut and olives

Nuts require skill to tighten them the required torque and are more expensive. For a dumbed down labour force and the bean counters that's a problem. O rings just require a retaining clip (but even clips aren't always pushed fully home).

In addition plastic parts are considerabley cheaper to manufacture but do not offer the required strenght for a screwed fitting.

 

[zimmers]

Gasguru,i agree 100%, but as you say the clips,when they come out,never seem to go back all the way. I have had trouble with the big metal clip at the front which needs to go through the 2 holes,then screw back in,too much and you can feel the screw about to shear off , but if you dont tighten it up good it leaks, ive tried leaksealer(fernox) just a bit around the face of the connection but to no avail.And new seals are just making it harder to get the connections all the way in. what a nightmare , thanks again

 

[scatmanjohn]

the 2 small pipes back without leaking

Which ones?

 

[ollski]

99 times out of 100 the problem with the small pipe is that the o ring is still left in the manifold, it has to come out and it is still a pain to get it back in properly without it falling off and stopping you pushing it far enough to get the clip in. Don't say you took it out just to do the diaphragm though.

 

[corgiman]

the only problem I ever have with them is getting the big o ring on the end bit wrong and it pops out, other than that I dont mind

oh except that one I killed my thumb on two odd years ago

it still isnt right

 

[zimmers]

I wish it was just the diaphragm,i always check that first,but not my luck

 

[namsag]

This must be everyones pet hate of a job, only do them for mates or boilers i fitted anyone else can bug#er off. Even changed a diaphragm in situ once without taking anything out to see if this was easier ,it wasn`t

 

[ChrisR]

Take me about 40 mins now, once the darned boiler's drained, but need a clear bit of worktop to lay out all the clips etc in order.
Only persistent problem is the rear O ring (HW). Even new and greased they leak sometimes. I'm sure a slightly fatter O ring would go in there. Measuring it exactly is one of those jobs... one day.
Takes many attempts to get the big U clip in which holds the dhwhe, sometimes!