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proper lubricating oil supply to the vacuum pump | Pierburg | Motorservice

Vacuum pump damage

lack of lubricant due to incorrect mounting

Pierburg | Motorservice
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Information on diagnostics

What could cause this vacuum pump to fail? Why does the braking power reduce and why does the support from the brake boosters drop? Is this caused by lack of lubricant? This is possible on vacuum pumps driven by the camshaft. Find out why the vacuum pump fails and how you can prevent this here.

Vehicle Engine identification Vacuum pump
  Pierburg No.
Citroën, Fiat, Peugeot
with 1.8/1.9 l
Diesel engine
XUD7, XUD9A,
XUD9AU, XUD9TE,
XUD9Y, D9B
7.24808.11.0
Vacuum pump fitted to the cylinder head | Pierburg | Motorservice
Vacuum pump fitted to the cylinder head

Possible complaints:

after having replaced the cylinder head

  • Reduced braking power
  • Loss of braking power support
  • Total failure of the vacuum pump
proper lubricating oil supply to the vacuum pump | Pierburg | Motorservice
Important: proper lubricating oil supply to the vacuum pump

During checks in the workshop it is determined that the vacuum pump has failed owing to insufficient lubrication. Affected are only vehicles with the engine identifications given above in which a vacuum pump has been built in which is driven by the camshaft. Vacuum pumps driven by a V-belt are not affected by this.

Cause:

When replacing the cylinder head within the scope of an engine repair, the closure screw was not removed which seals off the opening of the lubricating oil supply to the vacuum pump.

19095
19094
18955

NOTE

Before installing a new vacuum pump the lubricating oil supply system must be checked under all circumstances!

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