Book No.: 95-0014-0000/A OPERATOR
Issue: 06 HANDBOOK
Page 15 of 30
2. Once up to temperature, slide the roller bearing (89) inner race up hard against the shaft shoulder, fit the bearing
spacer (78) and slide the angular contact ball bearings (2 off 90) up hard onto the other shaft shoulder. Hold them
in position for a minimum of 30 seconds. The lock nuts (91) fitted without the tab washers are suitable for this
purpose. This allows the races to grip the shaft and prevent them from creeping away from the shoulder during
cooling. Let the assembly cool completely.
3. Once cool, remove the lock nuts (91), fit the locking washers (92) and refit the lock nuts. Knock up at least two tags
on the locking washers to secure.
4. Press the roller bearing (89) outer race sufficiently into the bearing bracket (75) bore so that it is deep enough to
allow the bearing covers (76) spigot to engage with the bore. Fit the bearing cover without a lip seal (95) or O-ring
(36) and press the outer race fully home.
5. Press the shaft assembly into the bearing bracket from the motor end until it is clamped hard together.
6. Remove the pump end bearing cover (76), fit a lip seal (95) and O-ring (36) and refit the cover.
7. Fit O–ring (36) to motor end bearing cover (77). Attach the cover to bearing bracket with screws (61).
8. Fit the hydraulic motor (84) and O-ring (37) to the bearing cover (77) and secure with screws (57) and spring
washers (64). Note that the hydraulic motor front oil seal is NOT removed for this pump model.
9. Attach the adaptor (8) to the bearing bracket assembly using screws (57) and spring washers (64).
10. Attach lifting frame (11) to bearing bracket assembly using bolts (54), spring washers (63) and nuts (69).
11. Clean the shaft thoroughly and lubricate with clean water or a diluted soft soap solution. Do not use heavy grease,
silicone or PTFE based lubricants, as these would prevent the seal from gripping the shaft.
CAUTION. Mechanical Seals are precision engineered devices. Extreme care must be taken to ensure that no
damage occurs to the lapped faces. These faces must be kept absolutely clean throughout the entire
installation. Do not touch them or allow any contaminant to come into contact with them. Soiled faces will have
to be cleaned with appropriate degreasing cleaner and soft tissue. Failure to observe these precautions will
lead to premature seal failure.
12. Press the seal seat into the adaptor (8).
13. Carefully slide the rotating parts of the first mechanical seal (29) over the shaft until they abut the seal seat. Set the
seal to the dimension given in the technical Data section and lock lightly in position tightening the grub screws
evenly a part turn at a time.
14. Slide the rotating parts of the second mechanical seal (29) over the shaft until they abut the first seal. Lock lightly in
position tightening the grub screws evenly a part turn at a time. Confirm that both seals are correctly positioned
and tighten the grub screws fully.
15. Place an O-ring (34) in the groove in the inner wear plate (4), place the seal seat (27) and seal clamp plate (7) in
position and secure with screws (59) and spring washers (66).
16. Fit an O-ring (38) to the inner wear plate (4) and fasten to the adaptor assembly using socket head cap screws
(60).
17. Attach the rear wear plate (6) to the adaptor (8) using studs (53), rubber bonded washers (40) and nuts (10).
18. Fit the key (4) and impeller (3) to the shaft. Secure with the impeller retaining nut (47) and washer (48).
19. Measure the clearance between rear of impeller and rear wear plate. Remove the impeller and add shims (15, 16,
17 & 18) at ‘X’ as necessary to obtain the clearance given in the Technical Data section.
20. Refit the impeller, lock the assembly with a bar through the vanes of the impeller and torque the retaining screw to
the value given in the Technical Data section.
21. Fit the front wear plate (5) to the front cover (2) using screws (57) and bonded rubber washers (40).
22. Attach the front cover and wear plate to the pump body (1) using studs (51), spring washers (64) and nuts (70).
23. Fit the pump body assembly to the bearing bracket, wear plate and impeller assembly with studs (52), spring
washers (64) and nuts (70). Measure the clearance between the front of the impeller and front wear plate. Remove
the pump body from the assembly and fit gaskets (21, 22, 23 & 24) at ‘Y’ to obtain the clearance given in the
Technical Data section. Reassemble and recheck.
24. Attach the strainer (9) to the front cover with screws (57) and bonded rubber washers (40).
25. Fill the seal chamber with oil (see Technical Data section) ensuring that no air pockets remain and plug off with
plug (45).
26. Fill the bearing chamber with oil (see Technical Data section) ensuring that no air pockets remain and plug off with
plugs (2 off 45).
Assembly is now complete, but before attaching the hydraulic lines, the unit must be partially filled with hydraulic oil to
prevent dry running on start up.
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