Critical axial flow dimensions and tolerances – Goulds Pumps AF (Axial Flow) (6"-36) MXR Bearings" User Manual
Page 56
54
AF (6-36) IOM
BEARING HOUSING
Inspect the bearing housing (134C) bores for signs of
scarring or galling from the outer race. Table 6 gives
the critical bore dimensions for the housings. The
bores should not be eggy and should be concentric,
see Fig. 55.
BEARINGS
The bearings (112C and 168C) should be inspected
for contamination and damage. The condition of the
bearing will provide useful information on operating
conditions in the bearing housing. Lubrication
condition and residue should be noted. Bearing
damage should be investigated to determine the
cause. If cause is not normal wear, it should be
corrected before the pump is returned to service.
DO NOT RE-USE BEARINGS
.
Labyrinth Seals and O-rings
Although the labyrinth seals (332, 333), O-rings (351,
351A, 351W, 412A, 412D, 412T, 412Y, 496D) and
gaskets (331, 351A, 351W, 211) may seem OK during
inspection and examination, DO NOT RE-USE
SEALS when rebuilding the pump. Replace them
while pump is disassembled.
Critical Axial Flow
Dimensions and Tolerances
Pump
Size
Inboard
Housing
Bore
Outboard
Housing
Bore
Inboard
Bearing
Seat
Outboard
Bearing
Seat
Mech.
Seal
Seat
Sleeve
Seat
Impeller End
1
st
Step
2
nd
Step
6
3.5442
3.5433
3.9379
3.9370
1.9690
1.9686
1.7722
1.7718
1.750
1.748
1.687
1.685
1.2495
1.2485
8
1.3745
1.3735
10
12
4.7253
4.7244
5.5128
5.5118
2.5597
2.5592
2.5597
2.5592
2.500
2.498
2.437
2.435
1.9995
1.9985
2.0307
2.0297
14
1.9895
1.9885
1.9995
1.9985
16
5.9076
5.9055
6.6950
6.6929
3.3472
3.3466
3.1502
3.1497
3.250
3.248
3.248
3.247
2.5935
2.5925
2.6245
2.6235
18
2.6245
2.6235
2.6555
2.6545
20
7.8758
7.8740
8.3780
8.3770
4.7263
4.7254
4.2531
4.2521
5.250
5.248
5.188
5.186
3.6240
3.6230
3.6552
3.6542
24
4.0000
3.9985
4.0300
4.0290
700
mm
9.8449
9.8431
10.7530
10.7520
5.9071
5.9061
4.7534
4.7524
6.250
6.248
6.187
6.186
3.999
3.998
30
36
11.0262
11.0244
12.0030
12.0020
6.6945
6.6935
5.7525
5.7515
7.000
6.998
6.9360
6.9335
4.7180
4.7165
4.7490
4.7475
Table 5.
Fig. 55
Outboard
Housing
Bore
Inboard
Housing
Bore
134C