Publication No.: 2753-20
9
SECTION 6
– ADDITIONAL PROCEDURES
6.1
RE-HANDING THE PUMP
R75/R77 - Looking at the pump from the shaft end with the
inlet flange up, the Pump can be configured with the
alternate inlet on the left or the right.
R80/R82
– Looking at the pump from the shaft end with the
mounting feet down, the Pump can be configured with the
inlet port on the right or the left.
1.
Remove the eight cover cap head setscrews (6).
2.
If required, fit two of the setscrews to the tapped
jacking holes and tighten to remove cover.
3.
Remove the Cover (2), remove the Cover O-ring (4),
discard and replace with lightly lubricated new O-ring.
NOTE:
The cover is a very neat fit into the pump body. Do not
use excessive force to remove the cover. If the cover
gets stuck, gently rock loose or gently tap loose with a
soft mallet.
4.
Lightly lubricate and refit to Cover, ensure that the O-
ring is properly fitted.
5.
Remove the Impeller from the shaft as the Impeller
may slide off the shaft during the Bearing Housing
removal and re-fitment.
6.
Remove the eight bearing housing cap head
setscrews (27). Repeat step two if required.
7.
Remove the Bearing Housing (20), remove the
Bearing Housing O-ring (26), discard and replace with
lightly lubricated new O-ring.
8.
Lightly lubricate and refit to the Bearing Housing,
ensure that the O-ring is properly fitted.
9.
Refit the Bearing Housing to the opposite side of the
pump. The Bearing Housing inlet port aligns to the
Body (1) inlet port.
NOTE:
Correct angular orientation of both the Cover and Bearing
Housing is guaranteed as one of the bolt holes is 1.5
degrees out of pitch. In other words if all eight bolts do
not start in the Body’s tapped holes, the angular
orientation is not correct.
10.
Do not force the Bearing Housing into the Body. If it
gets stuck, gently rock loose or gently tap in with a
soft mallet.
11.
Do a final check to ensure the Bearing Housing O-
ring is correctly located.
12.
Fit all eight bearing housing cap head setscrews and
torque to 100 Nm (75 ft-lbs).
13.
Aligning the Impeller keyway to the shaft key, fit the
Impeller to the shaft.
14.
Fit the Cover to Body, note that the raised cast text
“IN” aligns with the Body’s inlet flange. Again beware
the close fit and don’t force the cover in. Again check
that the Cover O-ring is correctly located.
15.
Fit all eight cover cap head setscrews and torque to
100 Nm (75 ft-lbs).
6.2 LOCKED IMPELLER REPLACEMENT
The pump should rest on its inlet flange.
1.
Remove the Cover’s eight cap head setscrews (6). If
required fit two of the setscrews to the tapped jacking
holes.
2.
Remove the Cover (2), remove the Cover O-ring (4),
discard and replace with lightly lubricated new O-ring.
NOTE:
The cover is a very neat fit into the pump body. Do not use
excessive force to remove the cover. If the cover gets
stuck, gently rock loose or gently tap loose with a soft
mallet.
3.
Loosen the Impeller’s locking screw (10) and remove
the Impeller (2) and Impeller Key (8). If required, use
2 off M8x75mm setscrews as jacking screws.
4.
Rotate the Shaft (21) such that the impeller keyway is
at the 3 o’clock position. Fit the new Impeller Key (8)
to the keyway.
5.
To set the Impeller (3)
clearance, tape 2 off
0.005 inch (0.127mm)
feeler
gauges
as
shown in Figure 7
such that the ends
come up against the
shaft.
6.
Fit the Impeller to the
shaft and then fit the
M8x12
socket
set
locking screw tightly
to the Impeller with
Loctite 243 or equal.
NOTE:
The feeler gauges must be aligned horizontally at 9
o’clock & 3 o’clock. While applying even pressure to the
Impeller, tighten the locking screw.
7.
Remove the feeler gauges. If they are tight or stuck
gently tap the shaft on the opposite side while pulling
the feeler gauges.
8.
Gently fit the Cover (2) to the Body (1).
Do not force the cover into the body.
If it gets stuck, gently rock loose or
gently tap it in with a soft mallet.
9.
Do a final check to ensure the Cover
O-ring (4) is correctly located (See
Figure 8), then hand fit the eight cover
cap head setscrews (6). Torque
setscrews to 100Nm (75 ft-
lb’s)
Figure 8
Figure 7
9 O’CLOCK
POSITION
3 O’CLOCK
POSITION
KEYWAY
Содержание R75
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