940 Estate In Tank Pump Replacement

[Steve 940]

Just been re-reading all my previous threads on this, and looks like I need to go back in tomorrow. Just had a nagging doubt that the locking ring wasn't right, and visions of fuel leaking out when I have a full tank or with it sloshing around whilst driving.

On looking back to my December posts on this topic, our good Laird S advice was to actually grease the locking ring thread!!!

How I managed to read this as 'not to grease', I will never know, I'd printed everything on this and had to hand so no excuses!!!

Oh well, at least I should be a bit quicker in getting a few hoses off to make access to the ring better, grease the threads on the ring and put it back on, again!!

Cheers
Steve

[volvo always]

Originally Posted by Steve 940

Just been re-reading all my previous threads on this, and looks like I need to go back in tomorrow. Just had a nagging doubt that the locking ring wasn't right, and visions of fuel leaking out when I have a full tank or with it sloshing around whilst driving.

On looking back to my December posts on this topic, our good Laird S advice was to actually grease the locking ring thread!!!

How I managed to read this as 'not to grease', I will never know, I'd printed everything on this and had to hand so no excuses!!!

Oh well, at least I should be a bit quicker in getting a few hoses off to make access to the ring better, grease the threads on the ring and put it back on, again!!

Cheers
Steve

When I replaced my 940 LPT in tank pump, I used a batten of wood on the raised ribs and rubber mallet to gently tighten it as much as I dare. When I finally managed to re-fit the housing I found I had to tap the final bit of the housing into position, so that the ring gripped the thread, as housing not fully in.

A fiddly job, but very rewarding.

James.

[Steve 940]

Finally completed this job today, and took it out for a test drive for a few miles, thankfully no leaks so far!!👍👍

Have left the access panel loose until I can fill her up to check no leaks on the filling hose pipework that's been disturbed.

Now the question is, should I replace the main pump and filter as well?? The pump has been working overtime for the last 3k miles since I bought it, pump and filter were replaced as part of the deal when I bought it. I do have new Bosch main pump and filter that I sourced along with the in tank pump and sealing ring.

Cheers
Steve

[Forrest]

I ran an original main pump for ten years and 100k miles with a failed lift pump. It was still working when I replaced it with a new Bosch one a couple of years before I got around to replacing the in-tank pump. I don't think 3k miles will have had a major impact on the lifespan of yours.

That said, it is worth keeping the fuel filter clear and if you want to renew the main pump (for long-term reliability) it is sensible to do the pump at the same time as the filter.

Well done for finishing the in-tank pump. Isn't it great when these jobs go well?

[Steve 940]

Originally Posted by Forrest

I ran an original main pump for ten years and 100k miles with a failed lift pump. It was still working when I replaced it with a new Bosch one a couple of years before I got around to replacing the in-tank pump. I don't think 3k miles will have had a major impact on the lifespan of yours.

That said, it is worth keeping the fuel filter clear and if you want to renew the main pump (for long-term reliability) it is sensible to do the pump at the same time as the filter.

Well done for finishing the in-tank pump. Isn't it great when these jobs go well?

Hi Forrest,

Many thanks and much appreciated, will keep the main pump and filter as spares, just in case. The old sender unit and fittings inside the tank were spotless, and the old sock was still intact, so should be fine hopefully.

Once again many thanks for your responses and your tip around how best to get the seal in was a real success.

Yes, a nice feeling of contentment that a long overdue job has been ticked off, hopefully, as long as no leaks when filling up of course.😀

Now to revisit the 'to do' list to work out what's next on the agenda.

Cheers
Steve

[Steve 940]

Hi,

Just to update, I’ve actually braved filling her up to see if the previous works all remained leak free, I had left the access panel off so I could see the pipe work whilst actually filling it through the rear side windows.

Topped up and very pleased to report no leaks, I had been having visions/nightmares of the main fill hose popping off and flooding the forecourt😀.

Anyway left overnight with some cardboard directly under the tank neck area, and checked this morning, no evidence of leaks, and paper towel wiped under each hose joint again proved dry.

Consider this task ticked off at last.

Cheers
Steve

[Laird Scooby]

Originally Posted by Steve 940

Hi,

Just to update, I’ve actually braved filling her up to see if the previous works all remained leak free, I had left the access panel off so I could see the pipe work whilst actually filling it through the rear side windows.

Topped up and very pleased to report no leaks, I had been having visions/nightmares of the main fill hose popping off and flooding the forecourt😀.

Anyway left overnight with some cardboard directly under the tank neck area, and checked this morning, no evidence of leaks, and paper towel wiped under each hose joint again proved dry.

Consider this task ticked off at last.

Cheers
Steve

Double-check the tightness of the lock-ring in a month or two Steve, the seals have a habit of settling once distrubed and refitted and can leak a bit later - earned mine an MoT fail as it dripped petrol on the MoT testers bald head!

[Steve 940]

Hi Dave,

Duly noted, I've put a note in my diary, but after much much dilemma, general procrastination, and anything else to divert me,from this job, without the great suggestions from yourself and many others I wouldn't have dreamed this was a task I could complete and actually not break something else.

Off to the Amazon meet in Southwold next weekend, organised by Peter Ragg who I gather is a Amazon aficionado, coffee, bacon rolls and cars, plus the dogs can run on the beach, what's not to like😀

Wallet is twitching though, I fear there might be some very nice examples that will tempt me further to dip into, ahem!!!! 'reserves'

Cheers,
Steve

[Moomoo]

Originally Posted by Steve 940

Hi Dave,

Duly noted, I've put a note in my diary, but after much much dilemma, general procrastination, and anything else to divert me,from this job, without the great suggestions from yourself and many others I wouldn't have dreamed this was a task I could complete and actually not break something else.

Off to the Amazon meet in Southwold next weekend, organised by Peter Ragg who I gather is a Amazon aficionado, coffee, bacon rolls and cars, plus the dogs can run on the beach, what's not to like😀

Wallet is twitching though, I fear there might be some very nice examples that will tempt me further to dip into, ahem!!!! 'reserves'

Cheers,
Steve

Southwold makes my wallet ache.

While you’re there why not buy a 2 up 2 down cottage for £500,000 with this years bonus, gleaned in the city!

I’m not bitter.😵*💫

Have a good day mate!😄

[nutco]

Steve 940, cheers for the tips in your write up, did you replace just the pump or the whole in tank assembly ?, where did you buy the replacement parts and can you remember the part numbers, thanks