Leaky HP pump

Dommo · Post by **Dommo** » 09 Feb 2010, 10:45

Hi folks

Sorry for starting yet another new topic but a search didn't come up with all that much.

Basically I've got a leak thats visible down the left hand side of the engine, ie everything under the HP pump. I've read that this can kill the alternator so I'd like to sort it. So... How many seals are there on the HP pump, which seal's 'go', where do I get them from, and how do I fit them?

Thanks

KP · Post by KP » 09 Feb 2010, 12:19

IIRC if it is not the seal on one of the pipes causing the issue the best option is to strip it off and send it somewhere like Plaides who can rebuild it for you and fully test it

citroenxm · Post by **citroenxm** » 09 Feb 2010, 12:43

its useually the O ring seal on the pipe NEAREST The pump pully, remove the pipe with 12mm, then remove the union the pipe screws into with 17mm spanner, THEN WATCH FOR THE SPRING and PLATE under it!! WITHDRAW IT CAREFULLY!!

Theres on O Ring on the union part - available from Citroen too.

Paul

Xaccers · Post by **Xaccers** » 09 Feb 2010, 12:53

There's also a blanking plate on the back of the pump, basically like the union that the metal pipe comes out of but without any holes in it.
The o-rings are about £1.18 from the dealers.

Dommo · Post by **Dommo** » 09 Feb 2010, 12:57

The pipe coming from the front of the Pump seems to be wet. I'll get a photo later and have a look for potential leak spots. If seals are available from Citroën I'll just do it myself.They can't be that expensive?

Cheers for the advice fellas!

Dommo · Post by **Dommo** » 09 Feb 2010, 13:00

Sorry xac I missed your reply when I replied. It's likely that the seal around the back is leaking because there's quite a bit down the block. Does that rear seal leak more onto the alternator or block?

Cheers.

citronut · Post by **citronut** » 09 Feb 2010, 13:59

the pipe union seal is a diferent diamiter to the blancking plug seals,

the larger one below are the pipe union seals,
i belive the larger one also is the same on the non +2 pumps

4026 87
HYD OIL O-RING
DIAM 16-TO 1,9
- PRESS PUMP 6+2 + NON-SINKING

4026 88
HYD OIL O-RING
DIAM 19-TO 2,4
- PRESS PUMP 6+2 + NON-SINKING

below is part No.'s and price's trade inc VAT

Part Number Description Quantity Price excl. VAT Price incl. VAT Total incl. VAT Selection
0000402687 HYD OIL O-RING 1.46 GBP 1.72 GBP 1.72 GBP

0000402688 HYD OIL O-RING 1.16 GBP 1.36 GBP 1.36 GBP

regards malcolm

Sid_the_Squid · Post by **Sid_the_Squid** » 09 Feb 2010, 16:33

Are the O rings sold separately? Last time I had to buy some (summer 09) I had to buy in packs of 10! from the main stealers of course.

Xaccers · Post by **Xaccers** » 09 Feb 2010, 17:54

Dommo wrote:Sorry xac I missed your reply when I replied. It's likely that the seal around the back is leaking because there's quite a bit down the block. Does that rear seal leak more onto the alternator or block?

Cheers.

Back leaks more on the block.
Front drips onto the alternator slowly killing it.
From my experience anyway.

Use plenty of rag as a fair amount of LHM comes out when you remove the plugs.

Dommo · Post by **Dommo** » 24 Feb 2010, 20:30

Very slow reply here, but I've just taken some photos and I'm going to get some seals tomorrow all being well..

Here's what the servicebox shows my pump as:

Looks like the one with the pipe coming out of it on the left needs replacing, part 5 on servicebox

Judging by this next picture I definately need the seal closest to the pulley as Paul mentioned, however it's not marked on the servicebox picture so I cant get a part number for it, any ideas??

It also looks like that judging by my pictures the three 'part number 4' seals with the torx hole on don't need doing, but I might do them anyway.

Post by **xantia_v6** » 24 Feb 2010, 20:52

By 1999, the RP number is on the tyre pressure sticker in the drivers door opening.

Dommo · Post by **Dommo** » 24 Feb 2010, 20:58

Ahhh, that'll be why I can't find it. I wondered if it'd moved on the later cars. Cheers.

lexi · Post by **lexi** » 24 Feb 2010, 22:39

The seal nearest the pulley come in packs of 5 . When you take out the 19mm plug there is no need to disturb or remove the spring behind it. Just pick off the old seal from around the plug threaded shank and the new one slips over and all the way up and into the groove.....just like a condom so to speak .

Dommo · Post by **Dommo** » 24 Feb 2010, 23:00

lexi - I assume you mean the one with the hydraulic pipe going into it?

What about the one around the back on the third picture that is literally a blanking plug with no torx/allen key hole in it?

Cheers.

Xaccers · Post by **Xaccers** » 24 Feb 2010, 23:03

If the seals for the torx ones (o-ring 4) aren't leaking, then I wouldn't disturb them.
The pipe one and its blanking counterpart use o-ring 5 (4026 88) which are sold individually from stealers for approx £1.18 each.
Expect to pay up front.