1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Welcome To LandyZone!

    LandyZone is the biggest Land Rover forum on the net. We have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place.

    Registering is free and easy just click here, we hope to see you on the forums soon!

Series 3 Diesel vacuum pump question

Discussion in 'Series Land Rovers' started by Jules59, Sep 18, 2019.

< Previous Thread | Next Thread >
  1. Jules59

    Jules59 Member

    Joined:
    Sep 9, 2019
    Posts:
    18
    Likes Received:
    8
    Location:
    Warwickshire
    I have a question about the vacuum pump on my diesel S3 project re-build. The pump has two inlet ports (I think they both suck). One goes to the brake servo (pipe attached). What is the other port for ? Should it be capped off or left open ?

    S3 (49) (Large).jpg
     
  2. tottot

    tottot Well-Known Member

    Joined:
    Nov 7, 2010
    Posts:
    4,473
    Likes Received:
    1,000
    Location:
    west wales coast
    I have not ever seen one of these in the flesh, most series that had a servo had a flap device in the inlet manifold to provide the vacuum [ pretty rubbish ]. For yours to work both inlet and outlet need to be open.
    To test pump remove pipe and with engine running [ careful as rotating parts near ] and put a finger over each pipe in turn. One should suck and one should blow. Pipe needs to be on the one sucking the other should be left open.
     
  3. rob1miles

    rob1miles Well-Known Member

    Joined:
    Sep 22, 2017
    Posts:
    2,535
    Likes Received:
    860
    Location:
    Slough and Bath
    Where does it exhaust? If there is no exhaust then that could be it.. If it is the exhaust put a bit of pipe on it and route it somewhere where dirt and water wont block it.
     
  4. Chopz

    Chopz Member

    Joined:
    Jan 18, 2019
    Posts:
    72
    Likes Received:
    20
    Location:
    Cambridgeshire
    One sucks for the servo and the other is the exhaust
    That same vacuum pump used to be fitted to fords with the old Peugeot engine
     
  5. steve2286w

    steve2286w Well-Known Member

    Joined:
    Jul 6, 2007
    Posts:
    1,745
    Likes Received:
    392
    Location:
    monkeyhangerland
    the standard set up uses the inlet manifold for vacuum as tottot says this then Tees off and one goes to servo and th either to a vacuum reservoir storage tank , to make it work well the butterfly valve needs to be adjusted properly using the adjustable levers
     
  6. divie

    divie Well-Known Member

    Joined:
    Jul 21, 2011
    Posts:
    1,071
    Likes Received:
    43
    I have not seen a vacuum pump like that before. My series three ha the butterfly arrangement on the inlet manifold, as stated before a bit of a rubbish set up.
    Add on to the poor set up of butterfly arrangement 30+ years of wear and you will never get it working well.
    My solution was to bin the butterfly and blank off then fit an electric vacuum pump triggered from the brake light switch. Two hours work and sub £100 all in.
     
  7. Jules59

    Jules59 Member

    Joined:
    Sep 9, 2019
    Posts:
    18
    Likes Received:
    8
    Location:
    Warwickshire
    Certainly no butterfly valve on this diesel's inlet manifold that I can see.
     
  8. imortim1

    imortim1 Member

    Joined:
    Aug 28, 2018
    Posts:
    48
    Likes Received:
    15
    Location:
    Baltimore, MD
    Could you take some pictures to show how the pump in the first post is mounted? I'm trying to add one to my 2.25d and would be interested in the mounting arrangement.

    Many Thanks,

    PM
     
  9. winchman

    winchman Active Member

    Joined:
    Nov 2, 2005
    Posts:
    693
    Likes Received:
    57
    Location:
    A little fishing Village ner St.Helens Merseyside
    That could well be a Peugeot pump some one has fitted should work fine, I think one end socks and the other should be vented
     
  10. Jules59

    Jules59 Member

    Joined:
    Sep 9, 2019
    Posts:
    18
    Likes Received:
    8
    Location:
    Warwickshire
    Yes will do but wont be able till friday.
     
  11. Disco1BFG

    Disco1BFG Well-Known Member

    Joined:
    Mar 18, 2015
    Posts:
    5,048
    Likes Received:
    2,530
    Location:
    Buxton
    Interesting. Which Vac pump did you use pls ? I'm toying with an electric conversion on our 300Tdi's ;)
     
  12. divie

    divie Well-Known Member

    Joined:
    Jul 21, 2011
    Posts:
    1,071
    Likes Received:
    43
    Disco 1 BFG, From memory I used a Hella U28 or maybe a U30 ? I sold the series three a while ago so can't check.
    I bought the vacuum pump from a Dutch supplier new for around £70 (badged as a Volvo part). Very simple to fit triggered via a relay from the brake light switch. It transformed the hit and miss servo flap arrangement into a reliable works every time set up. The only downside was that I could hear the pump working when sitting with my foot on the brake peddle. Chris.
     
    Disco1BFG likes this.
  13. Blackburn

    Blackburn Well-Known Member

    Joined:
    Feb 21, 2013
    Posts:
    2,584
    Likes Received:
    412
    Location:
    Tyneside
  14. divie

    divie Well-Known Member

    Joined:
    Jul 21, 2011
    Posts:
    1,071
    Likes Received:
    43
    Just looked at the ebay link from Blackburn. I used the UP28 one from the Netherland supplier.
     
    Disco1BFG likes this.
  15. Jules59

    Jules59 Member

    Joined:
    Sep 9, 2019
    Posts:
    18
    Likes Received:
    8
    Location:
    Warwickshire
    Hope these help

    IMG_20191122_115256094 (Large).jpg IMG_20191122_115316987 (Large).jpg IMG_20191122_115438380 (Large).jpg IMG_20191122_115632535 (Large).jpg
     
  16. imortim1

    imortim1 Member

    Joined:
    Aug 28, 2018
    Posts:
    48
    Likes Received:
    15
    Location:
    Baltimore, MD
    Many Thanks - very helpful.

    My pump has arrived and is of the same type. I now need to source the double pulley and the mounting bracket. I've never seen the part # for the latter or seen it advertised.
     
  17. Blackburn

    Blackburn Well-Known Member

    Joined:
    Feb 21, 2013
    Posts:
    2,584
    Likes Received:
    412
    Location:
    Tyneside
    Optional parts catalogue shows a double water pump pulley for double belt fan set up.
     

    Attached Files:

  18. imortim1

    imortim1 Member

    Joined:
    Aug 28, 2018
    Posts:
    48
    Likes Received:
    15
    Location:
    Baltimore, MD
    Thanks!

    That's one part of the problem identified! Now just the pump mounting bracket. Forgot about the optional parts book. Must look for that on the early 110's, which had this fitted.
     
< Previous Thread | Next Thread >