Howden WRV, Service Manual

Page: 28 / 64

27
7.3
DISMANTLING PROCEDURE FOR ANNUAL INSPECTION (Continued)
Now that the slide valve has been removed by shining a light from the valve bore, a visual inspection
of the rotors can be achieved (Figs. 18 - 19).
Fig. 18
Fig. 19
PTFE Seals.
The compressor has now been dismantled enough to permit the inspection and replacement of the
PTFE seals and ‘O’ rings in the actuator cylinder, (Fig. 20) also the piston, should they be required
(Fig. 21).
Fig 20 Fig 21
Fig. 20 Fig. 21