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MAINTENANCE
VANE REPLACEMENT
NOTICE:
Maintenance shall be performed by qualified technicians
only, following the appropriate procedures and warnings
as presented in manual.
Figure 5 – Vane Installation
1. Vanes may be replaced with the pump in the upright
position.
2. Flush the pump per instructions in this manual. Drain
and relieve pressure from the pump and system as
required.
3. Remove the head assembly from the
outboard
(nondriven) side of the pump according to steps 4 - 8 in
the "Pump Disassembly" section of this manual.
4. Turn the shaft by hand until a vane comes to the top
(12 o'clock) position of the rotor. Remove the vane.
5. Install a new vane, ensuring that the rounded edge is
UP, and the relief grooves are facing towards the
direction of rotation. See Figure 5.
6. Repeat steps 3 and 4 until all vanes have been replaced.
This method of vane installation ensures the push rods
do not fall out of their rotor slots.
7. Reassemble the pump according to the "Pump
Assembly." section of this manual.
