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ENGINEERING STANDARD PROCEDURE
IMPELLER INSTALLATION – TECH BULLETIN
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A0431
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2.3 – Impeller Cap / Shaft Adapter Installation
Using a grease remover or solvent, remove all oil or grease
from impeller screw. Install O-Rings onto impeller screw and
impeller cap (Model PHO) or shaft adapter (Models PBO,
PVO).
Insert impeller screw and apply thread locker to the impeller
screw and shaft-end internal threads.
Use LOCTITE® 262 High Strength Grade or equivalent.
2.4 – Lock Screw Installation
Align and insert the impeller cap or shaft adapter into the
impeller counter bore. Insert the lock screw into the motor
shaft and tighten to the proper torque requirement using a
calibrated torque wrench only. Confirm the torque setting by
reapplying the prescribed torque 2-3 times more to
compensate for initial component set.
See Table 2.5 for Torque Requirements
2.5 - Impeller Lock Screw Torque Requirements
TBM 50LH – 100LH
(1/2"-13 UNC) 55 ft/lbs (75 Nm)
TBM 150LH
(5/8"-11 UNC) 110 ft/lbs (150 Nm)
TBM 200LH
(3/4"-10 UNC) 200 ft/lbs (275 Nm)
TBM 250LH
(3/4"-10 UNC) 200 ft/lbs (275 Nm)
TBM 75MH
(5/8"-11 UNC) 110 ft/lbs (150 Nm)
TBM 100MH
(5/8"-11 UNC) 110 ft/lbs (150 Nm)
TBM 150MH
(3/4"-10 UNC) 200 ft/lbs (275 Nm)
TBM 200MH
(3/4"-10 UNC) 200 ft/lbs (275 Nm)
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EFFECTIVE
01-26-2012
DATE:
UJB
08-15-02
UJB
01-26-2012
BY
APPV'D
DATE
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