WIKA CPP1200-X - Handbuch (Seite 29)

29 WIKA operating instructions model CPP1200-X
GB
14076968.01 12/2013 GB/D
7. Maintenance and cleaning
7.2.2 Removing the cover
1. Drain as much oil as possible from the test pump by turning the spindle pump fully
clockwise and using a drain screwed into the test connection.
2. Remove the oil cups by levering upwards carefully.
3. Slacken the socket set screw using a 3 mm hexagon wrench key and remove both
handwheels.
4. Remove the four cover retaining screws and lift off the cover.
7.2.3 Reservoir seals
1. Unscrew two screws and remove the reservoir cover
2. Remove the O-ring seal (6) from the recess and the Seloc seal (7) from the screws.
3. On replacement ensure all sealing faces are absolutely clean and do not overtighten
screws.
7.2.4 Valve seals
1. Unscrew the gland nut.
2. Unscrew the valve spindle and remove the bonded seal.
3. Slide gland nut off spindle.
4. Using a suitable hooked tool remove the O-ring seal (9) from the bore of the gland
nut. Renew O-ring and bonded seal (10).
5. On replacement ensure that O-ring is correctly located in the groove and all sealing
faces are clean. Remove all burrs from spindle.
7.2.5 Spindle pump
1. Using a 4 mm hexagon wrench key unscrew the six socket head cap screws secur-
ing the hub locating plate. (These are positioned inside the recess in the back of the
aluminium hub).
2. By carefully pulling the hub the complete ram assembly can now be withdrawn from
the barrel (During this operation a container is required beneath the barrel to catch
any liquid).
3. Unscrew the ram from the hub assembly.