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vacuum pump

  1. Intermittent Servo assited braking

    Welcome to The VW T4 Forums
    I'm looking for a little advice on a 2.4 98 reg T4 with brake problems. A while back the brakes seemd to fail but infact it was just that the servo assitance just suddenly dissappeared. The brakes work intermittently as if there is sometimes a vacuum and at other times none. When there is...
  2. T4 1.9 ABL Vacuum Pump - Question?

    Engine & Gearbox
    Hi All - A quick question about Vacuum Pump piping. On my van the pump's suction pipe is connected straight to the brake servo, as you would expect, but there are 2 other small pipes also connected to it. One goes to the EGR solenoid which is fine. The other pipe seems to disappear through the...
  3. Running vac pump without pushrod ?

    Would there be any problem in briefly running the engine without the pushrod in the vacuum unit ? Obviously there would be no vacuum to the brake servo but I would not actually move the bus anyway - it would just be a static test. My brakes / servo operate perfectly, I am trying to find out...
  4. Heads up on seal change on Vacuum Pump

    Engine & Gearbox
    A bit of a heads up when you change the seals on the vacuum pump. I changed the seals on the at the weekend and the job went well, apart from deciding to take off the oil pump to get better access and now the seal on the oil filter cooler has gone. Not a major job to change, but you think...
  5. HOW TO - Replace Vacuum Pump on the 2.5 TDI

    Technical Articles
    Just replaced my clattering pump, too embarrassing to ignore any longer! So here's my 'how to' on an 03 AJT engine. Parts Vacuum Pump 074 145 100A £225.50 + VAT Ebay £95 new from Poland - UPDATE - Failed within 2 months Gasket 075 145 117C £5.35 + VAT * Intermediate cam follower (drive/push...