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Thread: 300Tdi Vacuum pump specs

  1. 25th April 2017, 10:30 AM #1
    LRT's Avatar
    LRT
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    300Tdi Vacuum pump specs

    The vacuum pump on our Defender 130 is only producing 7" HG vac and has no assistance when braking.

    The workshop manual says 0.8 bar?? This seems odd as bar measures pressure not vacuum.

    Does anyone know what a healthy vacuum pump should produce?
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    1976 RRC Suffix D
    1979 Series III GS FFR
    1980 Series III GS FFR with a Perentie RFSV tub
    1991 Discovery 1 3.5 V8 3 door
    1993 Discovery 1 200Tdi 3 door
    1993 Defender 110 200Tdi ute
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  2. 25th April 2017, 05:20 PM #2
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    bee utey
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    Mean sea level atmospheric pressure is 1 bar or 1000mbar, so a measured vacuum of 0.8 bar is an absolute pressure of 0.2 bar. So I'd expect 24 (0.8 of 30) in Hg to be quite achievable. A mate of mine just fitted a new s/h booster to his 300TDi RRC but it turned out the vacuum pump was stuffed. Another pump solved his problem.
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  3. 25th April 2017, 05:34 PM #3
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    Thanks for your advice Bee utey,

    Looks like it needs a new pump.
    REMLR Registrant No. 436
    LROCV Member No. 1703

    1976 RRC Suffix D
    1979 Series III GS FFR
    1980 Series III GS FFR with a Perentie RFSV tub
    1991 Discovery 1 3.5 V8 3 door
    1993 Discovery 1 200Tdi 3 door
    1993 Defender 110 200Tdi ute
    Reply With Quote Reply With Quote
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