Goulds Pumps 3910 11th ed. - IOM - Manual (Page 44)

REASSEMBLY
Refer to Table 7 for torque values while reassembling pump.
!
Leakage of process liquid may result in creating an explosive atmosphere. Ensure the materials of the pump casing,
impeller, shaft, sleeves, gaskets and seals are compatible with the process liquid.
!
Leakage of process liquid may result in creating an explosive atmosphere. Follow all pump and seal assembly
procedures.
44
3910-1
1th IOM 5/08
Table 7
Maximum Torque Values for Model 3910 Fasteners
Values in N-m (ft.-lb.)
Item
Number Description
Group/
Size
Construction - API Designation
Non-API
Material
S-1 S-3 S-4 S-5 S-6
S-8
S-8N S-9 C-6
A-8
A-8N D-1
Modified
A-8
136
Bearing Locknut
SA
SX, MX, LA
XLX
95 (70)
149 (110)
407 (300)
304
Impeller Nut
SA, SX
MX
LA, XLX
145 (107)
178 (131)
287 (212)
353
and
355
Gland Studs & Nuts
SA
All others
118 (87)
235 (173)
365A
and
425
Casing Studs &
Nuts
SA, SX
MX (11")
MX (13")
LA (16")
XLX (21")
415 (306)
415 (306)
671 (495)
1006 (742)
1426 (1052)
370H
Screw - Bearing
Frame/
Seal Chamber Cover SA
SX
MX, LA
XLX
41 (30)
80 (59)
142 (105)
346 (256)
370N Screw -Thrust Bear-
ing End Cover to
Frame SA, SX
MX, LA
XLX
41 (30)
41 (30)
80 (59)
370P and
370W
Optional
Screw -Radial Bear-
ing
End Cover to Frame SX
MX, LA
XLX
9 (7)
469Q
(Optional)
Screw -Thrust De-
flector Fan Guard
Support All 9 (7)
Pump to Base Bolts All 955 (705)
NOTE: The torque values specified in the above table are for dry threads. These values should be reduced for lubricated threads only
when lubricants of high stress ability (e.g. - Molycote) are used.
NOTE: Materials listed in the above table are equal to the respective API 610, 10th Edition (ISO 13709) material classes. In some cases, supe-
rior materials are substituted.