Grundfos CR 32 Service Instructions Manual page 4

4. Torques
Pos. Description
Coupling guard
7a
screws
9 Coupling screws
18 Air vent screws
23 Drain plugs
26b Screws for straps
28 Motor stool screws
36 Pump head nuts
48 Spit cone nut
58a Seal carrier screws
113 Shaft seal set screws
5. Lubricants
Pos. Description
9 Coupling screws
28 Motor stool screws
58a Seal carrier screws
51 Shaft
105 Shaft seal
37 O-ring pump housing
47 Bearing ring
109 O-ring shaft seal
110 O-ring shaft seal
4
Dimensions Torque
- 4.4 ft-lbs./6 Nm
M10 x 25 mm 63 ft-lbs./85 Nm
-
26 ft-lbs./35 Nm
1/2"
- 11 ft-lbs./15 Nm
M10 x 50 mm 46 ft-lbs./62 Nm
M16 74 ft-lbs./100 Nm
- 52 ft-lbs./70 Nm
M10 x 25 mm 46 ft-lbs./62 Nm
- 4 ft-lbs./6 Nm
Lubricant Product No
THREAD-EZE 00SV9997
Soapy water -
Rocol
Sapphire 00RM2924
Aqua-Sil
6. Pump dismantling
Position numbers refer to the drawings in section 11. Exploded
views.
6.1 Motor
To prevent the motor from tipping over, hold it
straight when using a lifting device.
Caution
Do not use the lifting eyes of the motor for lifting
the entire pump and motor assembly.
1. Remove screws (pos. 7a) and coupling guards (pos. 7).
2. Remove screws (pos. 9) and coupling (pos. 8). It may be
necessary to loosen the coupling with a rubber hammer.
3. Remove screws (pos. 28). Lift and remove motor and motor
stool (pos. 1a) with lifting straps that pass through the motor
stool. Ensure that the motor does not tip and the load is not
applied to the pump shaft.
6.2 Shaft seal and pump head
1. Remove screws (pos. 58a) and retainer (pos. 58).
2. Clean end of shaft (pos. 51).
3. Slacken set screws (pos. 113) of shaft seal (pos. 105).
4. Carefully press shaft seal out of pump head (pos. 2) using two
slot screwdrivers, and pull it off the shaft. See fig. 1.
Fig. 1 Removing upper shaft seal
5. Remove nuts (pos. 36) and washers (pos. 66a).
6. Remove pump head (pos. 2). It may be necessary to loosen it
with a rubber hammer.