TM 10-4930-351-14
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ASSEMBLY Continued
16. Install rotor (43) inside cam ring (40).
17. Install drive sleeve (36) onto shaft (28). Ensure that the end with two grooves is facing the discharge port plate (39).
CAUTION
After rotor drive pin is installed, do not disturb position of drive sleeve. Rotor pin will fall into pump
and damage pump at first attempt to operate.
18. Rotate rotor (43) or drive sleeve (36) to align notch in the rotor (43) with the largest of the two grooves on drive sleeve
(36). Install rotor drive pin (37) in the aligned groove to engage rotor (43) to drive sleeve (36).
19. Install six vanes (42) in rotor (43).
20. Install inlet port plate (35) so that alignment pin hole engages alignment pin (41)
21. Press down on inlet port plate (35) and rotate until rotary vane pump assembly (38) engages two index pins (54). While
holding in place, loosely install six socket head screws (33) and washers (34). Torque in crossing pattern to 20-25 in-lbs.
22. Rotate shaft (28) to align grove on drive sleeve (36) and shaft (28). Install pin (32) in drive sleeve (36) and shaft (28).
Do not lift drive sleeve (36) or disturb position after pin (32) installation.
23. Install impeller (27), washer (31) and secure (hand tight) with shaft nut (30).
24. Install flexible coupling adapter and key on keyed end of shaft (28).
25. Position strap wrench around the flexible coupling as near to set screw as possible to hold shaft (28). Torque shaft nut
(30) to 193-208 in-lbs.
26. Remove flexible coupling adapter and key from shaft (28).
27. Lightly lubricate and install O-ring (53) on relief valve (52). Install and tighten relief valve (52). Torque to 93-98 in-lbs.
28. Install rotary seal (24) in shaft seal cap (22) so that metal ring is visible (facing out).
29. Install retainer ring (23) in shaft seal cap (22).
30. Lightly lubricate and install O-ring (25) on shaft seal cap (22).
31. Install shaft seal cap (22) to bearing housing assembly (15). Install six hex head screws (20) and flat washers (21).
Torque in a crossing pattern to 42-46 in-lbs.
32. Lubricate and install O-rings (18 and 19) on bearing housing assembly (15).
33. Align to previous marks and insert bearing housing assembly (15) in diffuser case (4).
34. Install the eight hex head screws (16) and flat washers (17) that secure the bearing housing assembly (15) to the diffuser
case (4). Torque in a crossing pattern to 75-80 in-lbs.
35. Lubricate and install O-rings (5 and 6) on diffuser case (4).
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