TORQUES
Position
Number
7a Screw for Guard .......................................... 6 ft.-lbs./8 Nm
9 Coupling Screws ..................................... 63 ft.-lbs./85 Nm
26b Allen Screw for Strap ............................ 11 ft.-lbs./15 Nm
28 Allen Screw Motor
Stool to Pump Head .............................. 46 ft.-lbs./62 Nm
28a Allen Screw for Motor
1/2" x 13 UNC, 3-40 HP ........................ 30 ft.-lbs./40 Nm
5/8" x 11 UNC, 50-60 HP ...................... 59 ft.-lbs./80 Nm
31 Allen Screw for Bottom
Stationary Bearing ...................................... 6 ft.-lbs./8 Nm
36 Staybolt Nut ..........................................74 ft.-lbs./100 Nm
48 Split Cone Nut ......................................... 52 ft.-lbs./70 Nm
58a &
58d Allen Screw Seal Carrier ....................... 46 ft.-lbs./62 Nm
67 Allen Screw for Shaft Bearing............. 23 ft.-lbs./31 Nm
113 Allen Set Screw for Shaft Seal ................. 6 ft.-lbs./8 Nm
CONTENTS
Dismantling Procedures ...................................................Page 2
When Should A Part Be Replaced ? ...............................Page 12
Reassembly Procedures ................................................. Page 13
Setting The Coupling Height ..........................................Page 21
Order of Stage Assembly - CR, CRN 32 ........................Page 23
Order of Stage Assembly - CR, CRN 45 ........................Page 24
Order of Stage Assembly - CR, CRN 64 ........................Page 25
Order of Stage Assembly - CR, CRN 90 ........................Page 26
CR, CRN 32•45•64•90
Dismantling &
Reassembly
GRUNDFOS
CR SERVICE MANUAL
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