Hale SMR - Manual (Page 91)

Stainless Max Series Pumps 6-13
Maintenance and Repair
Inspect wear ring OD for
signs of wear. Measure
the outside diameter) of
the clearance ring in
several places, using a
digital caliper. (See X in
Figure 6-8.)
❑
New clearance ring
diameter:
7.220" to 7.222"
(183.4-183.5mm)
❑
Wear Limit: 7.200" (182.8mm)
If the measured dimensions do not fall within the acceptable
ranges specified, the wear ring must be replaced.
Installation Notes
To install, follow the preceding steps in the reverse order, paying
attention to the following:
❑
Review preceding section “Before You Begin...,” beginning on
page 6-1.
❑
Pay attention to section “Cleaning and Inspection Guidelines,”
beginning on page 6-6 to ensure a thorough installation.
❑
Install the impeller shaft key into the slot on the pump shaft.
❑
Carefully slide the impeller over the pump shaft, aligning the
keyway with the impeller key.
❑
Make sure the “new” lock washers are installed with the
locking ridges facing each other.
❑
Torqued the impeller nut to 295 ft.-lb. (400 N-m).
Mechanical Seal Assembly
See Figure 6-4: “Stainless Max Pump Breakdown” on page 6-9.
IMPORTANT !
IF EXCESSIVE LEAKAGE FROM THE DRAIN HOLE IN THE PUMP HEAD
IS NOTICED OR SUSPECTED, THE IMPELLER MUST BE REMOVED
AND THE MECHANICAL SEAL MUST BE INSPECTED.
Figure 6-8: Wear Ring Measurements