34
SHAFT AND SEAL INSTALLATION
See figure 14. Stand the pump in an upright position with the port block inlet and outlet
pads turned down.
Install the shaft and bearing (1) assembly in the mounting flange and cradle. Be certain
that there are no burrs or sharp edges on shaft seal area of the shaft.
For a rigid shaft application use the shim (2) that results in least clearance around the
shaft bearing. Do not use a shim with a floating shaft.
Install the snap ring (3) in the mounting flange to retain the Shaft Assembly. Be certain
that the ring is fully seated in the groove. Use the ring that results in the tightest fit.
Warning: When installing a new mechanical shaft seal, exercise care to insure that
all of the parts fit together properly. This is particularly important if the seal was once
assembled and disassembled for some reason. If the rubber boot, item 4, grips the
shaft and doesn't slide on the shaft, as it is disassembled, then the spring, item 7, can
disengage the shell, item 5, from the band, item 6, so that they do not re-engage
properly when reassembled. Be sure the shell and the band are properly engaged
before reassembling the seal, and stays engaged during assembly.
Note: Lubricate seal and shaft with clean hydraulic fluid of the same type that will be
used in the system.
ASSEMBLY PROCEDURES
Figure 14
Valve Block
See Fig.
10, 11,
12, 13
21
20
22
24
23
MECHANICAL SHAFT SEAL
ASSEMBLY PROCEDURE