Thread: Puma vacuum pump seal failure - questions

Sounds like the common drama.... if you were in the middle of the simpson and it did what mine did you'd want to ahve about 50 litres of oil on you to get to safety! And maybe someone under the hood just pouring it in as you drove! haha

Originally Posted by briann

After 10000km of excellent service I have found engine oil apparently leaking from the vacuum pump on my 2008 Defender. It is sprayed all over the place by the vacuum pump drive pulley. I assume it is the problem listed in Tech Service Bulletin LTB00177?
Rather than investigate myself I have had it trailered to a Sydney service centre for warranty repair. However I have the following questions for anyone who understands this unit (Made by Wabco):
1. Is the only purpose to provide vacuum assist to the brakes. If so why does it not exist on the Ford Transit variant?
2. How come engine oil is leaking from it? Why is engine oil there and how is it fed to the pump?
3. If I had been in the middle of the Simpson I guess I could have kept going (with much oily mess in the engine comprtment) given sufficient tp-up oil on hand. Is this correct?
4. How can I be sure (by looking at the installed pump) that the new unit with extra seal has been installed?
Thanks

no idea on 1 but when in a transit it might be fitted with an alternator that carries the vac pump like the TD5 and the isuzu does in the rover.

2 the engine oil is the lube for the pump without it the pump might work for about 2 minutes.

3 your correct you could have kept on going with top up oil, it wouldnt leak as much as you fear as it should just be pumping the oil back out the vent line back into the sump same as on the tdi/td5 alternator mounted vac pump.

4. no idea havent seen either of them in pieces.

This is a very common fault,it seems to be one of the only faults on that engine.I would fit one under warranty and ask for the old one back and pull it apart to find why they do it.It is the only thing I've heard puma owners here complain about. Pat

so your not worried about the....

abrading brake lines on the fire wall
the abrading on some of the brake tanks
the "we need to replace your whole fuel system" thing
the "one of my injectors stuck open and hydrauliced the engine" (admitedly that fault so far has been limited to the transit vans)
the my front diff ate my engine sump.
the why doesnt the throttle work (havent heard much about that one in aus)

or....

are you only counting things that are physically bolted to the engine and not part of the vehicle as a whole?

If thats the case its early days for it yet and I anticipate that being of the same tech as the TD5 we're just waiting for it to start going west.

I was talking about the engine.So you have had all those faults?.If they are no good you could always sell it and buy a toyota,there very very well made,except if you buy one that has a recall tagged on it which is likely seeing they have averaged one recall per month for the last decade or so. Pat

I dont (and wont) own a puma, these are just some of the common faults that come up on this forum and the uk ones.

the engine itself is last on the list of reasons why I wont own a puma powered deefer.

From what I've read they only fail in hot, dry, and dusty conditions............


Is this what you're after:


Technical Service Bulletin
No.LTB00177
09 October 2008

Subject/Concern: Brake Vacuum Pump Seal Oil Leak

Models:
Defender (LD) 2.4L Diesel Only
2.4L Diesel Only VIN-range: 7A732615 Onwards


Markets: All

Section: 206-07

Summary:
Oil leaking from the brake vacuum pump front oil seal.

Cause: Dirt ingress into the pump pulley seal resulting in damage to the lip and subsequent oil leakage (the new brake vacuum pump has a secondary dirt lip seal). Suggested Customer Concern Code - R31.

Action: Should a customer express concern, install a new brake vacuum pump (refer to Global Technical Reference GTR Workshop Manual, section 206-07 (70.15.19)).


Parts Required:
Description Part Number Quantity
Brake vacuum pump LR012183 1
Gasket LR004381 1

Labour Time:
Operation Description Operation No. Time
Install a new brake vacuum pump 70.15.19 0.7 hours

Repair/Claim Coding:
Causal Part: LR012183
ACES Condition Code: 42





Cheers,

Tim

Well my pump seal failed on Wednesday and is getting replaced today. If you have a TDCi "Puma" Defender I strongly reccommend printing off the TSB, taking it to your dealer, and insisting that they change the pump before it becomes an inconvinence to you.

Tim