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JLM11253 NLA -waht to do?

mikegamble
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Posts: 294
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Location: Penzance, sunny Cornwall

JLM11253 NLA -waht to do?

Postby mikegamble » Mon Jan 20, 2020 11:31 am

I'm trying to sort out a solution for the braking issue on my car but. it seems my options may becoming very limited?

In essence, since having the new reservoir fitted to the car, the braking has improved massively. However, when I get in the vehicle I have to wait 30-60 seconds for the ABS and brake warning light to go off and then the car will drive absolutely fine in normal conditions.

However, if I wind up doing protracted stop/start driving, the lights will illuminate and I will start to lose braking efficiency to the point where my level of braking is only in relation to how physically hard I am pressing so, I need to sort this out.

I've had a look for new parts and, from what I can see, there isn't a new option available and it appears from the conversations that I have had this morning that I can't get my existing unit repaired?

I've tried to use the Jaguar classic site to try and make sure that I am actually looking for the right number (although it seems that they are no longer right across the range?) but I'm struggling there as on the Jaguar page it doesn't list a 4.0 variant for my year and if I follow the Daimler link it offers a 4.0 variant but, not until 1992, and mines an '89?

The only thing of interest I have found on the net is this part in the U.S - would this help solve my issues?

https://www.wholesalepartsexpress.com/p ... tor-90-94/

Any suggestions/ideas/previous solutions as I'm guessing this issue has raised it's head here before?
Daimler XJ40 G531ABW Chassis No.603858
1986 Porsche 928 S2
1978 Mercedes 450 SLC
1986 Porsche 924S
1981 Porsche 924 NA
1991 Toyota Celica
1981 VW T25 rusty camper
2003 VW T4 Caravelle

NMV 1E
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Re: JLM11253 NLA -waht to do?

Postby NMV 1E » Mon Jan 20, 2020 11:43 am

I'm not entirely sure it would, you know. The motor simply drives the pump from my understanding. I know from reading other Forum contributions in the past Servo units from the later 300 series have been considered ... Its a thought ( :?: ) To be honest, there's got to be another pump assembly in the Universe that will solve your issues. Having said that, there's got to be another supplier too ... ;)

This is the whole "kit and caboodle" from the bay for fleas ...................... https://www.ebay.co.uk/i/202674740252?c ... gJiK_D_BwE :shock:

Though on second thoughts, yours is the "earlier model ?"
Life begins at Forty !... I was born with nothing, I seem to have most of it left.

2002 Titan Silver BMW 316ti Auto Compact
2000 Bright Green V.W. Golf Avantgarde Cabriolet
1989 White and Navy Blue V.W. Golf Cabriolet (G.T.i.)

pimgmx
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Location: South East of the Netherlands

Re: JLM11253 NLA -waht to do?

Postby pimgmx » Mon Jan 20, 2020 12:00 pm

You mention 'new reservoir': was it the brake fluid reservoir or the pressure sphere that has been replaced?
If it's a new sphere, then your symptoms indeed suggest a failing pump, if it was the reservoir: I would also have a look at the sphere's condition...

I checked JCP, and I understand your confusion: no options for older build years with 4.0 engines are shown.
Probably stating the obvious, but did you compare your VIN with the VIN ranges JCP uses to distinguish the older/newer models?

Can you share pics of the unit on your car so we can try to compare it with the older (JLM 1884) or newer (JLM11253) pumps?

the daily: 01 S8 http://bit.ly/2kIwP4m
the eyecatcher: 93 Insignia http://bit.ly/1iGrmsU
the GT: 89 XJS http://bit.ly/1WQGpC5
the diva: 88 Biturbo SI https://bit.ly/3dzdvAL
the ex: 93 3.2 http://bit.ly/14GTNrq

mikegamble
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Posts: 294
Joined: Wed Jul 16, 2014 7:41 pm
Location: Penzance, sunny Cornwall

Re: JLM11253 NLA -waht to do?

Postby mikegamble » Mon Jan 20, 2020 12:22 pm

Yes, it was a new sphere I fitted....
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Daimler XJ40 G531ABW Chassis No.603858
1986 Porsche 928 S2
1978 Mercedes 450 SLC
1986 Porsche 924S
1981 Porsche 924 NA
1991 Toyota Celica
1981 VW T25 rusty camper
2003 VW T4 Caravelle

mikegamble
Snr Member
Posts: 294
Joined: Wed Jul 16, 2014 7:41 pm
Location: Penzance, sunny Cornwall

Re: JLM11253 NLA -waht to do?

Postby mikegamble » Mon Jan 20, 2020 12:30 pm

A hopefully better one
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Daimler XJ40 G531ABW Chassis No.603858
1986 Porsche 928 S2
1978 Mercedes 450 SLC
1986 Porsche 924S
1981 Porsche 924 NA
1991 Toyota Celica
1981 VW T25 rusty camper
2003 VW T4 Caravelle

NMV 1E
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Posts: 1065
Joined: Fri Apr 17, 2009 9:26 pm
Location: Lydiate, Merseyside.

Re: JLM11253 NLA -waht to do?

Postby NMV 1E » Mon Jan 20, 2020 12:33 pm

Craining my neck somewhat .... I'd suggest the mounting points are different from early to later pumps (Battery in the boot cars) ..... ;)
Life begins at Forty !... I was born with nothing, I seem to have most of it left.

2002 Titan Silver BMW 316ti Auto Compact
2000 Bright Green V.W. Golf Avantgarde Cabriolet
1989 White and Navy Blue V.W. Golf Cabriolet (G.T.i.)

mikegamble
Snr Member
Posts: 294
Joined: Wed Jul 16, 2014 7:41 pm
Location: Penzance, sunny Cornwall

Re: JLM11253 NLA -waht to do?

Postby mikegamble » Tue Jan 21, 2020 11:18 am

I've got a second hand unit lined up if it is required - I'm going to get the garage to check there's no other potential issues causing the problem but, I does seem strange that there doesn't seem to be a replacement option available?

You would think the there would be something that could be adapted or used instead. The sphere was the P38 unit, maybe there's something in the JLR group that could be utilised?
Daimler XJ40 G531ABW Chassis No.603858
1986 Porsche 928 S2
1978 Mercedes 450 SLC
1986 Porsche 924S
1981 Porsche 924 NA
1991 Toyota Celica
1981 VW T25 rusty camper
2003 VW T4 Caravelle

katar83
Posts: 2913
Joined: Tue Aug 23, 2011 11:17 am
Location: Cambridge

Re: JLM11253 NLA -waht to do?

Postby katar83 » Tue Jan 21, 2020 11:34 am

As per your other topic, I assume your system is the old hydraulic unit, replace it all with a reliable system from later models, much easier, maintenance wise that way, cost will be similar to fully sorting your old system but will last much longer with better performance.
Last edited by katar83 on Tue Jan 21, 2020 11:03 pm, edited 1 time in total.
1996, 3.2 SWB X300 - Finally a rust free daily driver :)
1997, 4.0 LWB X300 - Unlucky car.
1988, 3.6S XJS - Never ending restoration project.
1994, 3.2S X300 - Accident damaged, October 2015. Gone!
1994, 3.2S XJ40 - Long gone.

NMV 1E
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Location: Lydiate, Merseyside.

Re: JLM11253 NLA -waht to do?

Postby NMV 1E » Tue Jan 21, 2020 3:28 pm

mikegamble wrote:I've got a second hand unit lined up if it is required - I'm going to get the garage to check there's no other potential issues causing the problem but, I does seem strange that there doesn't seem to be a replacement option available?

You would think the there would be something that could be adapted or used instead. The sphere was the P38 unit, maybe there's something in the JLR group that could be utilised?


Part of the "problem" is, as I understand it we're looking at a replacement part from Jaguar ? The accumulator sphere is a "Land Rover" part or at least, fits one. My next research would be to find out who makes the pump in the first place and then sells it to Jaguar, Daimler and Land Rover, probably other manufacturers too :?: ;)
Life begins at Forty !... I was born with nothing, I seem to have most of it left.

2002 Titan Silver BMW 316ti Auto Compact
2000 Bright Green V.W. Golf Avantgarde Cabriolet
1989 White and Navy Blue V.W. Golf Cabriolet (G.T.i.)

pimgmx
Posts: 3411
Joined: Tue Jul 08, 2014 12:07 pm
Location: South East of the Netherlands

Re: JLM11253 NLA -waht to do?

Postby pimgmx » Tue Jan 21, 2020 3:34 pm

NMV 1E wrote:...next research would be to find out who makes the pump in the first place...

I've seen ATE labels on a few XJ-S (same period, similar system) units...

Some lateral thinking: what about getting a used brake/ABS unit (shouldn't cost a fortune!) and have the pump motor refurbished?
That, plus a few new seals should bring it back to 'as new' condition, without breaking the bank?

the daily: 01 S8 http://bit.ly/2kIwP4m
the eyecatcher: 93 Insignia http://bit.ly/1iGrmsU
the GT: 89 XJS http://bit.ly/1WQGpC5
the diva: 88 Biturbo SI https://bit.ly/3dzdvAL
the ex: 93 3.2 http://bit.ly/14GTNrq


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