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Volkswagen Workshop Service and Repair Manuals

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Removing and installing vane pump > < Assembly overview

New Beetle

Checking delivery pressure of vane pump
   
Checking delivery pressure of vane pump
Special tools and workshop equipment required
t  Hose clamps -3094-
t  Power steering tester -V.A.G 1402-
t  Adapter -V.A.G 1402/1A-
t  Adapter -V.A.G 1402/2-
t  Adapter set -V.A.G 1402/6-
t  Spring-type clip pliers -VAS 5024A-

–  Remove headlight → Electrical system; Rep. Gr.94.
   
–  Clamp off return line and suction line with hose clamps -3094-.
–  Place drip tray beneath.
–  Disconnect pressure line from pump.
  M48-0239
 Connect power steering tester -V.A.G 1402-
1 - Power steering tester -V.A.G 1402-
2 - Hose from pressure gauge -V.A.G 1402-
3 - Hose from adapter set -V.A.G 1402/6-
4 - Adapter -V.A.G 1402/1 A-
5 - Sealing ring
6 - Adapter -V.A.G 1402/2-
7 - Pressure pipe with banjo union
8 - Banjo bolt

–  Remove hose clamps -3094- from suction and return hoses.
–  Start engine and, if necessary, top up fluid level in reservoir.
–  Turn steering wheel approx. 10 times from lock to lock.
–  Now check delivery pressure.
Test prerequisites:
l  Poly V-belt and poly V-belt tension OK.
l  System must be free of leaks.
l  Hoses and lines must not be kinked or restricted.
–  With engine running at idling speed, close shut-off valve (not longer than 5 seconds) and read pressure.
Specification: 100 ± 4 bar
  Note
t  Renew the pump if the reading is higher or lower than specified:
t  Removing and installing vane pump → Chapter.
t  Always check steering system for leaks if fluid level in reservoir is low.
t  If leakage is visible at steering pinion, first check pipes and pipe connections for leaks. Tighten and wipe dry if necessary.
t  Renew steering gear if leakage is found at steering pinion seal or at steering rack seals in steering gear housing.
t  To check steering rack seals, loosen hose clip on boot and push back boot.
–  Bleed steering system → Chapter.
   

Removing and installing vane pump > < Assembly overview