Teikoku USA | Chempump
Instruction Manual HE-12270 (1219)
17
3. Insert bearing with flat washer into bearing housings. On the
motor bearings the end of the bearing with the V grooves
should be visible after installation. Position flat washer side
of bearing in line with set screw hole. While holding bearing
down, tighten set screw.
Caution!
Do not over-tighten set screw as damage to bearing
may occur.
4. On rear end of rotor, install anti-rotation pin/key.
5. Slide on rear thrust collar, verifying that the thrust collar is
installed correctly. The coated side of the thrust collar should
be positioned facing outboard with the chamfer side facing
inboard.
6. Slide on the rear shaft sleeve, ensuring that the shaft sleeve
is tight against the thrust collar and is engaged in the anti-
rotational key or pin.
7. Install the flat washer, lock washer, and lock bolt, ensuring
that the lock washer tab is engaged in the slot in the shaft
sleeve. Torque lock bolt per
Table 4-5
. This bolt has left hand
threads. Bend up tabs on lock washer.
8. On the front end of rotor, install anti-rotation pin/key.
9. Slide on front thrust collar, verifying that the thrust collar is
installed correctly. The coated side of the thrust collar should
be positioned facing outboard with the chamfer side facing
inboard.
10. Slide on the front shaft sleeve ensuring that the shaft sleeve
is tight against the thrust collar and is engaged in the anti-
rotational key or pin.
11. Slide on spacer and tighten set screw while holding spacer
tight against sleeve.
12. Slide assembled rotor into stator with rear end of rotor ex-
tending out of the stator.
13. Install the rear bearing housing gasket. Slide the rear bearing
housing onto the rotor shaft and slide the rear bearing hous-
ing and rotor into the stator. Tighten bolting evenly using a
star or cross pattern. Torque bolts per
Table 4-5
.
14. Slide front bearing housing onto rotor and into stator. Install
bolting. Tighten bolting evenly using a star or cross pattern.
Torque bolts per
Table 4-5
. Verify that the rotating assembly
rotates freely by hand with no binding or metal to metal con-
tact.
15. Check rotor assembly end play. End play should be within
the range indicated in
Table 4-4
. If the end play does not fall
within this range, remove rear bearing housing, remove rear
bearing and increase or decrease the adjusting washer quan-
titiy and thickness as required.
16. Measure “g” gap as per
Figure 4-4
to determine quantity
and thickness of adjusting washers. Install required adjusting
washers.
17. Install impeller key. Slide fourth stage impeller onto rotor
shaft.
18. Install third stage diffuser and bowl. Install cap screws. Tight-
en bolting evenly using a star or cross pattern. Torque bolting
per
Table 4-5
. Verify end play per
Table 4-4
.
19. Measure “g” gap as per
Figure 4-4
to determine quantity
and thickness of adjusting washers. Install required adjusting
washers.
20. Install impeller key. Slide third stage impeller onto rotor shaft.
21. Install second stage diffuser and bowl. Install cap screws.
Tighten bolting evenly using a star or cross pattern. Torque
bolting per
Table 4-5
. Verify end play per
Table 4-4
.
22. Measure“g” gap as per
Figure 4-4
to determine quantity
and thickness of adjusting washers. Install required adjusting
washers.
23. Install impeller key. Slide second stage impeller onto rotor
shaft.
24. Install sleeve with set screw inboard. Install set screw and
tighten while holding sleeve tight against impeller.
Figure 4-1. First Bowl Bearing – Only Straight Grooves
Figure 4-2. Motor Bearings – Spiral and Straight Grooves