6.
Refer to lubrication instructions in
7.
Replace coupling hub (233) and key (400).
7.5 M, L, X, and Y frames
1.
Clean the frame (228A) and bearing end cover (109) and install the oil seals (332A, S33D) with the
lips in.
2.
The M, L, X, and Y frames use a single deep groove radial bearing and either one (M Frame) or two
(L,X,Y, frames) angular contact thrust bearings. The radial bearing (168A) has both outer race
edges the same thickness. It is installed first on the stub shaft (380) (farthest from the motor). A
bearing spacer (443) is then installed on the stub shaft (380). The single thrust bearing (112A) (M
frame), or first of two thrust bearings (112A) (L, X, or Y frames), should then be mounted. These
should be installed so the thin edge of the outer race points toward the radial bearing (168A) (to-
ward the liquid end of the pump). For the L, X, and Y frame; the second thrust bearing (112A) is
installed in the same direction. Drive inner race of bearing only.
3.
Thread the bearing locknut (136) on the stub shaft (380) and tighten firmly.
4.
Place wave washer (524) in bottom of bearing frame (228A).
5.
After lightly oiling the bearing frame bore and bearing outer races, install the stub shaft assembly.
This is a sliding fit; do not tap in place.
6.
Install the bearing end cover (109A) and gasket (360) and tighten the bearing cap bolts (370N)
evenly. Insure that the mark "TOP" in the bearing cap is up.
7.
Replace pump coupling hub (233) and key (400).
7.6 Reassembly of liquid end
1.
Bolt seal housing (159) to bearing frame assembly.
2.
Install O-rings (412L) on stationary seat mount (158). Lubricate O-rings well, and press seal seat
mount into seal housing.
3.
Install O-ring on stationary seat of mechanical seal (383B). Lubricate O-ring well and press station-
ary seat into stationary seal mount (158).
4.
To install the drive collar (522) and split collet (524), slide the drive collar (522) over the shaft, past
the long groove for the split collet (524), with the narrow end away from the splined end of the shaft.
Spread the split collet (524) with a suitable tool, slide it on to the shaft with the narrow end away
from the splined end of the shaft. Seat the split collet (524) into the long groove. Push the drive col-
lar (522) over the split collet (524) and using a piece of pipe sized to seat against the narrow end of
the drive collar (522), drive the drive collar (522) with a hammer over th9 split collet (524) until
movement of the drive collar (522) stops. The split collet (524) must still be in the groove butted
against the edge closest to the splined end of the shaft. If the drive collar (522) split collet (524) are
not positioned and seated properly as shown, damage to the pump can occur when in operation.
1. Drive sleeve
2. Split collet (524)
3. Mechanical seal retaining ring groove (BP40, 70, 100 and 200 only)
Figure 3: Drive collar and split collet installation
5.
Install mechanical seal retaining ring (361D) on shaft (122) in groove near splined end. On BP20
pumps only, this ring (361D) is not required as shaft has a retaining stepped shoulder.
7.5 M, L, X, and Y frames
20
Model 3935 Installation, Operation and Maintenance Instructions
Содержание GOULDS PUMPS 3935
Страница 1: ...Installation Operation and Maintenance Instructions Model 3935 ...
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