76
B.
Using care NOT to damage clearance rings or impeller, install volute onto
pump head.
C.
Install volute fasteners.
Clean original fastener threads (or replace with the correct new fasteners)
1.
and volute screw hole threads. (Loctite Clean-Up Solvent)
Apply Loctite™ 243 (or equivalent) to threads of fasteners.
2.
Hand start eight (8) 3/8 — 16 X 7/8–in bolts (with washers) that hold vol-
3.
ute to pump head.
Using a 9/16-in wrench (or ratchet wrench or pass thru ratchet) tighten
4.
(CW) eight (8) 3/8 — 16 X 7/8–in bolts.
Using circular pattern, torque eight (8) 3/8 — 16 X 7/8–in bolts.
5.
Refer to Table 22 for recommended torque values for fastener size and
material.
D.
Connect mounting bracket(s) as noted/match marked.
E.
Connect any electrical wiring according to tags.
F.
Connect all suction and discharge tubing/piping as noted/match marked.
G.
Perform paragraph 4.4.4.1.3, Performance Testing Test Procedure, to verify
repair complete and pump in working condition. Repair any leaks or prob-
lems. (See page 41.)
H.
Update maintenance log entries.
I.
Place apparatus in service in accordance with departmental procedures.
5.8.4.5
MBP/RSD Inducer R&R
Typically, the inducer would not require replacement unless it has been damaged by allowing a
large piece of debris into the pump by not using or maintaining strainers. Long term wear can
damage an inducer to the point it must be replaced to maintain pump performance specifica-
tions.
When the MBP inducer R&R is performed without removing the volute, installing the cotter pin
may be difficult with the volute in place. The preferred method would be prior to performing this
procedure, remove the MBP volute as described in paragraph 5.8.4.3, Volute R&R (page 72).
For either pump, if the volute is removed when the inducer requires replacement, always inspect
(measure) the clearance rings and the impeller before installing the new inducer. Refer to
Table 23 for the impeller wear specifications. If the clearance rings are out-of-tolerance they re-
quire replacement, see Pump Clearance Ring R&R (paragraph 5.8.7.2 on page 110) for an MBP
or RSD. If the impeller is out-of-tolerance it requires replacement, see paragraph 5.8.4.6
(page 81), Impeller R&R for either pump. Figure 27 shows the MBP pump with the volute re-
moved and depicts the inducer removal.
NOTE
For the RSD pump, if pump performance is an issue and the clearance rings/impeller
are suspect, remove the volute instead of the suction head to provide access to the
impeller and rear clearance ring. See paragraph 5.8.4.2 (on page 69).
Содержание AP
Страница 2: ......
Страница 28: ......
Страница 71: ...59 Figure 19 One Piece Volute AP CBP MBP Figure 20 Three Piece Volute RSD...
Страница 73: ...61 Figure 21 AP Pump Exploded View...
Страница 74: ...62 Figure 22 CBP Pump Exploded View...
Страница 75: ...63 Figure 23 MBP Pump Exploded View...
Страница 76: ...64 Figure 24 RSD Pump Exploded View...
Страница 77: ...65 Figure 25 Gearbox Exploded View All Except 3 74 1 GR...
Страница 78: ...66 Figure 26 Gearbox Exploded View 3 74 1 GR...
Страница 158: ...146 THIS PAGE INTENTIONALLY BLANK...
Страница 174: ...C 12 THIS PAGE INTENTIONALLY BLANK...
Страница 176: ...D 2 DATE HOURS RUN MAINTENANCE PROBLEM PART S USED REASON REPLACED INITIALS...