HP 5660-97 - Manual (Page 3)

Models 5660-97 thru 5669-97
3
Specifications Information and Repair Parts Manual
11. Using a clean cloth, wipe shaft and
make certain that it is perfectly
clean.
NOTE: If removed, slide slinger washer
(Ref. No. 2) onto shaft until it is
located approximately 1/8" from face
of motor bearing hub.
12. Carefully guide motor shaft
through seal seat. Secure motor
adapter on motor mounting face.
13. Apply a light coating of soapy
water to inside rubber portion of
seal head and slide onto shaft (with
sealing face first) so that rubber
portion is just up over shaft
shoulder.
Do not touch or
wipe face of
polished part of seal head.
14. Replace any impeller shims which
may have been removed in
disassembly (see “Shim
Adjustment”).
15. Screw impeller back in place,
tightening until it is against shaft
shoulder.
16. Remount casing seal and pump
casing on casing cover.
IMPORTANT: Always inspect casing
seal for cracks or cuts when unit is
disassembled. Replace if damaged.
SHIM ADJUSTMENT
When installing a replacement
impeller (Ref. No. 12) or motor (Ref.
No. 1), it may be necessary to adjust
number of shims (Ref. No. 11) to insure
proper running clearance between
impeller and casing (Ref. No. 13).
Proceed as follows:
NOTE: A proper running clearance is
less than 0.010".
1. For impeller replacement, add one
0.010" shim in addition to shims
removed originally.
2. For motor replacement, add two
0.010" shims in addition to shims
removed during disassembly.
3. Reassemble pump using
”Mechanical Seal Replacement” for
reference.
IMPORTANT: Insure that casing is in
place and check shaft to make sure it is
turning freely (use screwdriver slot or
two flats at rear of motor to turn
shaft). If it turns freely, check to insure
that casing cover and casing are fitted
“metal to metal” where they meet on
outside. If they are not “metal to
metal” tighten fasteners (Ref. No. 5)
and recheck shaft for free turning.
Tighten carefully turning shaft while
tightening so that motor bearings are
not damaged in event that too many
shims were installed. If shaft seizes
before fasteners are completely tight,
disassemble pump and remove one
shim and repeat reassembly. Maintenance (Continued)