Repair
66
WBV.PU.002.EN VX136Q V2.0
9.9
Reducing the starting torque
The starting torque can be reduced by installing thinner wear plates or by installing shims between lobes and
wear plates.
Please note: increasing the gap between lobes and wear plates reduces the volumetric efficiency.
Increasing the gap by installing thinner wear plates
Gap increase
+ 1 mm
On gearbox side:
Replace the wear plate PFL.B009 (5 mm) with PFL.B009.T1 (4 mm)
On cover side: Replace the wear plate PFL.B002 (4 mm) with PFL.B002.T1 (3 mm)
Gap increase
+ 0.3 mm
On gearbox side:
Replace the wear plate PFL.B009 (5 mm) with PFL.B009.T2 (4.7 mm)
On cover side: Replace the wear plate PFL.B002 (4 mm) with PFL.B002.T2 (3.7 mm)
Increasing the gap by installing shims
Gap increase
+ 0.2 mm on the Q cover:
Put one new shim 10 x 16 x 0.2 (NUS.062) on each of the four distance nuts of the Q cover.
Gap increase
+ 0.2 mm on the gearbox:
1.
Put one new shim 60 x 75 x 0.2 (NUS.061) on each shaft in front of the first lobe.
2.
In addition put one shim (part no. NUS.062) on each of the four distance nuts of the Q cover to adjust
the gap accordingly.
Attention! If more than two shims are placed on each distance nut of the Q cover, a thicker O-ring (part no.
DOR.093) must be placed under the Q cover to maintain reliable sealing.
In case of wear on lobes or plates, the gaps can be reduced again accordingly.