Crane SGV2002L, Installation And Operation Manual

Examine all seal parts and especially contact faces. Inspect
seal for signs of wear such as uneven wear pattern on
stationary members, chips and scratches on either seal face.

DO NOT

 interchange seal components, replace the entire

shaft seal (21). If replacing seal, remove stationary (21a) by
prying out with flat screwdriver.

D-3.2) Reassembly:
Outer Seal- 

Clean and oil seal cavities in seal plate (19).

Lightly oil (

DO NOT

 use grease) outer surface of stationary

member (21a). Press stationary member (21a) firmly into
seal plate (19), using a seal pusher. (See parts list- seal tool
kit.) Nothing but the seal pusher is to come in contact with
seal face (See Fig. 6.) 

IMPORTANT !

DO NOT HAMMER ON THE SEAL PUSHER- IT WILL

DAMAGE THE SEAL FACE.

Make sure the stationary member is in straight. Slide a bullet
(see parts list-seal tool kit) over motor shaft. Lightly oil (

DO

NOT

 use grease) shaft, bullet and inner surface of bellows

on rotating member (21b) see Figure 7. With lapped surface
of rotating member (21b) facing inward toward stationary
member (21a), slide rotating member (21b) over bullet and
onto shaft, using seal pusher, until lapped faces of (21a) and
(21b) are together (see Figs. 4 & 7).

IMPORTANT !

IT IS EXTREMELY IMPORTANT TO KEEP SEAL

FACES CLEAN DURING ASSEMBLY. DIRT

PARTICLES LODGED BETWEEN THESE FACES

WILL CAUSE THE SEAL TO LEAK.

Place spring (21c) over shaft and in place on rotating
member (21b), making sure it is seated on retainer and not
cocked or resting on bellows tail. Slide retaining ring (21d)
over shaft and let rest on spring (21c). Assemble impeller,
cutter and volute as outlined in paragraph D-2.2. Replace oil
as outlined in paragraph D-1.3.

D-4) Motor, Bearing & Inner Seal Service

D-4.1) Disassembly and Inspection:

To examine or replace the motor (1), bearings (9), (3) & (48)
and inner seal (5), disassemble volute and impeller as
outlined in paragraph D-2.1 and disassemble outer shaft
seal as outlined in paragraph D-2.1. Drain oil from motor and
seal cavity as outlined in paragraph D-1.3.

2HP Pumps -

 Remove cable assemblies per paragraph

D-4.4. (See Figure 9). Position unit upright, using blocks to
avoid resting unit on shaft. Remove cap screws (12) and
washers (11) from motor housing (10), vertically lift motor
housing (10) from intermediate coupling (6) by lifting eye
(40) up cords (15) & (16) until motor lead wires are exposed.
Remove cable assemblies (15) & (16) by disconnecting
connectors (17) and (47) from motor lead wires and ground
screw (37) from motor (1). If pump is equipped with moisture
sensors, disconnect connectors (43) from wires (39), now
motor housing (10) can be removed. Inspect and remove
square-ring (8) for damage or cuts.

3,5,7.5HP Pumps - 

Remove cable assemblies per

paragraph D-4.4. See Figure 9. Remove cap screws (18) &
(46) and washers (11) from cover plate (13). Slide cover
plate (13) up cords (15) & (16) until motor lead wires are
exposed. Remove cable assemblies (15) & (16) by
disconnecting connectors (17) and (47) from motor lead
wires and ground screw (37) from cover plate (13). If pump
is equipped with moisture sensors, disconnect connectors
(43) from wires (39), now cover plate (13) can be removed.
Remove and inspect square ring (14) from motor housing
(10). Position unit upright, using blocks to avoid resting unit
on shaft. Remove cap screws (12) and washers (11) and
vertically lift motor housing (10) from intermediate coupling
(6). Inspect and remove square-ring (8) for damage or cuts.

Remove motor bolts and lift upper end bell from motor (1).
Examine upper bearing (9) and replace if required. If
replacement is required, remove bearing (9) from motor
shaft using a wheel puller. Lift motor stator from intermediate
coupling (6). To remove ball bearing (3), remove retaining
ring (7) from intermediate coupling (6) and pull motor shaft,
ball bearing (3) and inner seal (5) from intermediate coupling
(6). Examine bearing (3) and replace if required. 

Seal Plate (19)  or

Intermediate Coupling (6).

 SEAL PUSHER

Stationary Member (21a) &

(5a) Polished Face Out.

Fig. 6

MOTOR &

INTERMEDIATE

COUPLING

STATIONARY

(21a) & (5a)

 BULLET

ROTATING MEMBER

(21b) & (5b)

 SEAL PUSHER

Fig. 7

11