Goulds Pumps 3500XD - IOM - Manual (Page 33)

3500XD IOM 8/07
29
MAINTENANCE
LUBRICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
IMPELLER CLEARANCE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 30
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
INSPECTION AND OVERHAUL. . . . . . . . . . . . . . . . . . . . . . . . . . 35
REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
LUBRICATION
NOTE: Operation of the unit without proper lubrication
will cause bearing failure, and pump seizure.
NOTE: Pumps are shipped without oil. Oil lubricated
bearings must be lubricated at the job site.
Oil lubricated bearings must be lubricated at the job site.
Remove fill plug and add oil until level is at the center of the
sight glass. Replace fill plug.
Change the oil after 2000 hours for new bearings, thereafter
every 2000 operating hours or 3 months (whichever comes
first). Change more often if oil becomes contaminated with
dirt or water.
A high quality turbine oil with rust and oxidation inhibitors
should be used. For the majority of operational conditions,
bearing temperatures will run between 60° C (140° F) and
82° C (180° F). In this range, an oil of ISO viscosity grade
68 at 40° C (105° F) is recommended. If bearing
temperatures exceed 82° C (180° F), use of ISO viscosity
grade 100 is recommended.
Table 4
Lubricating Oil Requirements
Bearing
Temperature
below 82°
C (180° F)
Bearing
Temperature
above 82° C
(180° F)
ISO Grade VG 68 VG 100
Approx.
SSU at 38°
C (100° F)
300 470
DIN 51517 C68 C100
Kinematic
viscosity at
40° C (105°
F) mm2/sec
68 100
Acceptable Oils
Exxon Teresstic EP 68
Chevron GTS Oil 68
Mobil Mobil DTE 26 300 SSU
@ 38° C (100° F)
Gulf Gulf Harmony 68
Phillips Magnus Oil Grade 315
Phillips MM motor oil SAE 20-20W
Phillips HDS motor oil SAE 20-20W
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