Goulds Pumps 3700 Installation, Operation And Maintenance Manual page 111

Fastener
Item Part
Size
Impeller
Nut
(Appli-
5/8" - 11
cable for
304#
UNC
3700 ,
3703, &
3710
Product)
3/4" - 10
UNC
1" - 12 UNF
NOTICE:
• The torque values specified in the above table are for lubricated threads. Multiply
lubricated value by 4/3 for unlubricated fasteners.
• Thread lubricant is required for pressure boundary hardware (Items 353, 355, 356A, &
425). Use nickel-based or molybdenum-based anti-seize compound.
Spare parts
Critical services spare parts
For critical services, the following parts should be stocked, where applicable:
• Impeller (101) with impeller rings (202 and 203) (Applicable for 3700/3710)
• Impeller (101) (Applicable for 3703/3700LF)
• Thrust bearing end-cover (109A)
• Radial bearing end cover (119A)
• Shaft (122)
• Radial INPRO seal (123)
• Thrust INPRO (123A)
• Radial heat flinger (123B)
• Thrust fan (123E)
• Impeller key (178)
An alternative approach is to stock a complete back pull-out assembly. This is a group of
assembled parts which includes all but the casing and coupling.
Recommended spare parts
When ordering spare parts, always state the serial number, and indicate the part name and
item number from the relevant sectional drawing. It is imperative for service reliability to have a
sufficient stock of readily available spare parts.
It is suggested that the following spare parts be stocked, where applicable:
• Bearing locknut (136)
• Bearing lockwasher (382)
• Cartridge mechanical seal (383)
• Casing gasket (351)
• Casing wear ring (164) (Applicable for 3700/3710)
• Finned-tube cooling assembly (494)
• Impeller nut (304) (Applicable for 3700/3710/3703)
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
SA SX
Torque
6 8 10 7 9 11 12
80 Nm | 59
X X X
ft-lbs
138 Nm |
102 ft-lbs
329 Nm |
243 ft-lbs
MA MX La and LX
9 11 13 15 17.5 13 16 17 19 21 21 21 24 26 27
X X X
X X X X X
Maintenance
XL
X
XL
XXL
and
A
XL
X X X X X
109