Servis super twin service

[adam-aussie-vac]

Hey guys, does anybody have any knowledge on how to remove the pulley driven pump from The Twin tub, as the seal in the pump has gone and I’m wanting to repair it so I can get it into working order or if worse comes to worse replace it with an electric pump

 

[gizmo]

vague memory...

I think you take off the rubber tyre and underneath there is a grub screw you remove with an allen key.

The screw might not be under the tyre, it might be on the hub, I don't remember. It was over 20 years ago I last played with one of these. But it is there... Look on the shaft, if you can see a flat, that is where the grub screw will be.

 

[adam-aussie-vac]

Oh I don’t mean just removing the police, I meant removing

I meant removing the entire pump assembly, so that way I could replace the seals inside it

 

[gizmo]

Remove the entire pump

That is the easy bit.

It's a single bolt through the body of the pump. Maybe 1/2 inch nut?

Should be pretty obvious. Just undo the nut, then slide the pump off the stud (bolt.)

You can see the nut clearly in photo 2. Near the pulley.

 

[adam-aussie-vac]

Oh cool, I’ll definitely do that tomorrow and

You mean the knot in between the poly and the bolt with rust on it?

 

[adam-aussie-vac]

Oh cool, I’ll definitely do that tomorrow and

You mean the knot in between the poly and the bolt with rust on it?

 

[ozzie908]

I think its the nut where the straw is ! Move the pump back and forth and see where it pivots thats usually the bolt that holds it on.

 

[ozzie908]

Take the front panel off that help a little make it easier to see what's what

 

[adam-aussie-vac]

Okay

How do you take the front panel off?

 

[adam-aussie-vac]

Good news I got the pump out

Bad news is I don’t know no where the seal goes or even if there is a seal

 

[adam-aussie-vac]

So I’ve taken the pump apart completely, where would I find the seal for it and I noticed how there are appears to be some sort of little oiling well thing in the pump shaft, would that help create a seal or what?

 

[ozzie908]

@adam

Where did you see the leak coming from? Was it down the shaft of the impeller or around the edge of the body??

 

[adam-aussie-vac]

It came from the shaft And previously

And There was an issue where previously one hour was trying to drain the washtub, the pump wouldn’t prime but once it was primed it would Leak water from where the shaft is I honestly am kind of thinking about changing it to an electric pump But I don’t want to unless the original pump I can’t really repair

 

[ozzie908]

@adam aussie vac

Hmm I think it most likely would not turn as never known a Servis pump to not be primed, But a first time for everything...
Try cleaning all the gunk off the shaft I have a suspicion that the leak may not be repairable as there is no seal to my knowledge inside it was done bu machining a very smooth tight fitting shaft and you were right the oil in that port made it water tight all you can do is clean it all and grease it and see if you can get it to work.
But if not maybe a replacement could work instead?

 

[adam-aussie-vac]

Oh cool, I didn’t realise it was such a tight seal

That oil actually makes the seal, that’s kind of surprising, I’ll try probably putting some three in one oil into it and then making sure that seals hopefully,

 

[slowspin66]

To replace the seal is easy . If it’s a standard lip seal these are available from all good bearing shops . The shaft should be made of of a non ferrous metal. Take a photo of the seal and post it . I’ve taken seals out and they have fallen to bits so i have taken the pump body and the impeller shaft and the seal shop will measure the diameters for you and get the correct size . The shaft size is the most critical element as the outer seal size can be bonded in using a good gasket silicone . I’ve found this works fine . Good luck but it’s an easy fix this is a pump I refurbed for a friend a few weeks ago . The seal is brand new . Best wishes Darren

 

[slowspin66]

Most can be saved

This is the pump before repair
You can see it’s not good plenty of holes . The red colour inside is a resin concoction I make to protect the metal surfaces from the water and soap to prevent further problems down the line …

 

[adam-aussie-vac]

It doesn’t appear to be a standard lip seal

As it looks like it’s metal, I’ll take the pump back out of the twin tub and then grab photos of it, what would you recommend as a gasket material?

 

[slowspin66]

Gasket

If I have no originals I always use thin pond liner . Make a template out of the top of the pump
And where the screw fixings go through I use a hole punch …you can get off cuts very cheaply off eBay ..

 

[adam-aussie-vac]

Oh cool thank you I’ll be keeping in mind

Oh cool thank you I’ll be keeping in mind, I honestly thought about getting some sort of auto gasket material

 

[adam-aussie-vac]

I took some photos, what do you guys think?

 

[adam-aussie-vac]

Oh on a related note, I need one new wheel

As that Wheel has quite a large flat spot (Castor wheel not pump wheel)

 

[adam-aussie-vac]

Great news guys, I got the water seals out , I’ll be going to see if I can try and find some seals like it at the bearing supply store in Fyshwick

 

[ozzie908]

Fair play

You have gotten further into a Servis pump than I have . I also see there is a groove around the shaft that would indicate a small O ring type of seal but as Darren has shown above he goes way deeper than I do when it comes to restoring anything. He does a superb job too as I have seen the finished articles.

 

[slowspin66]

Take the pump

When you go to the bearing shop take the pump
Body and impeller . The rubber seal will have perished and won’t be a true size . Get them to measure the metal parts . I always give the pump
A good cleaning up with the Dremel … keep us posted with the progress ..

 

[adam-aussie-vac]

Great news, I went to the bearing shop and back

And I’ve installed it, it doesn’t appear early but I’ve got a realign the pump to its pulley The pulley that measures with the pump wheel after filling it up with water it doesn’t appear to leak, but it’s not pumping with water in it so it probably means that the shaft aren’t lined up properly

 

[adam-aussie-vac]

So I’ve water tested it and it does still appear to leak,

I’m probably actually just gonna electrify the pump does anybody know how to attach a switch onto The rotating lever?

 

[slowspin66]

It’s a pile of work to electrify

Post a couple
Of photos of the pump in situ and let’s see if it’s resolvable …
Does the drive pulley spin ?

 

[adam-aussie-vac]

Partially, not very fast

As if it has trouble catching up, and water was leaking where the oil Goes into the pump, Past the seal that I already installed it fits on the shaft and it seems to gently slide in, do you think it might be the seal is not sealing to The outside of the pump?

 

[adam-aussie-vac]

And at the moment I don’t want to post pictures because

It’s a pain to get the pump out and in the machine