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Thread: 300Tdi Vacuum Pump

  1. 23rd March 2013, 11:08 PM #31
    landychris's Avatar
    landychris
    landychris is offline Master Supporter
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    Pump 4 still ok. After some research when/if pump 4 gives up I will look at the brake booster pump. I understand that a crook one can put too much stress on the vacuum pump.
    landychris
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  2. 24th March 2013, 06:49 AM #32
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    wrinklearthur
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    Dry Lube stops stopping

    I was blaming my 300TDi pump, but I decided to change the brake vacuum servo unit instead and by doing this the fault has now been cleared.

    To find out why I had a intermittent hard pedal with poor stopping ability, I dismantled the servo to find that there is a lubricant around the servo push rod seal, this lubricant and the seal had gone hard with age and was allowing the vacuum to the diaphragm to be diminished by air being drawn past the push rod.

    I haven't found a kit to refurbish these servo's yet, so if anyone knows where to find such a kit, could they record the link on here please?
    .
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  3. 24th March 2013, 07:03 AM #33
    jboot51
    jboot51 is offline Master Gold Subscriber
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    Paddocks have seal kits.
    18G8951L - Seal kit for STC2878

    18G8951L | Seal kit for STC2878

    AEU2741 - Seal kit for NRC4772

    AEU2741 | Seal kit for NRC4772
    '95 Defender 130 Single Cab
    HS2.8 TGV Powered
    ------------
    98% of all Land Rovers built are still on the road.
    The other 2% made it home.

    Cost difference between Britpart and Genuine seals: £2.04. Knowing that your brakes won't fail at any moment: Priceless.
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  4. 24th March 2013, 07:28 AM #34
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    wrinklearthur
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    Quote Originally Posted by jboot51 View Post
    Paddocks have seal kits.
    18G8951L - Seal kit for STC2878
    18G8951L | Seal kit for STC2878
    AEU2741 - Seal kit for NRC4772
    AEU2741 | Seal kit for NRC4772
    Thanks jboot51 for that link.

    Those kit's don't have the diaphragm shown nor the lubricant.

    The lubricant I found in my faulty servo looked to be a zinc oxide based rubber grease and the diaphragm's would need replacing occasionally as they can develop cracks.
    .
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