Great Plains TS1000 Trailer Sprayer Operator Manual User Manual
Page 29
Great Plains Mfg., Inc.
Maintenance and Lubrication
7/6/09
27
TS1000 Trailer Sprayer 500-111M
Scott and Ace Pumps
The centrifugal pump is designed for long life and service.
Through the years, there may be a need to replace the me-
chanical seal or service some component of the pump. A
mechanical seal may weep slightly, but if it starts to drip, the
pump will have to be disassembled. Before disassembling
the pump, be sure to wash it out with fresh water.
If the pump is leaking, before removing it from the sprayer,
run the pump with adequate water in the tank to diagnose
the actual pump problem.
Ace Hydraulic Pump Seal Replacement
Refer to Figure 20
Disassembly
1.
Remove four 5/16” hex head cap screws (19) from rear
of motor (18). Remove motor (18) and coupler.
2.
Remove rear internal bearing snap ring (11).
3.
Remove four 3/8” x 3/4” hex head cap screws (9) from
mounting frame (8). Remove volute (2).
4.
Remove 3/8” lock nut (3) from shaft (16). Insert a flat file
into impeller vane to hold stationary. CAUTION: Ex-
cess torque may cause damage to plastic impel-
lers.
5.
Press shaft (16) out of impeller (5) using one 5/16” hex
head cap screw from step 1. Remove impeller (5), key
(15), and rotating seal member (6).
6.
Press shaft/bearing assembly out of frame.
7.
Remove stationary seal member (17) by prying out with
a screwdriver or pressing out from motor end of pump
housing.
8.
Remove o-ring (20) from shaft groove.
NOTE: If you are only replacing the pump seal: 1) Press
the shaft/bearing assembly into the
frame. 2) Reinstall the rear in-
ternal bearing snap ring. 3) Skip to Assembly step 8.
9.
Press bearings off of shaft.
10. Remove forward internal bearing snap ring (11).
Assembly
1.
Install forward internal bearing snap ring (11) in
mounting frame (8).
2.
Press in forward bearing (12) from rear side of mount-
ing frame (8) to snap ring (11).
3.
Install two external shaft retainer rings (13) with spac-
er (14) between on shaft (16).
4.
Press shaft assembly through forward bearing (12)
until forward shaft snap ring (13) rests against inner
face of forward bearing (12).
5.
Press rear bearing (12) over shaft (16).
6.
Insert rear internal bearing snap ring (11).
7.
Slide rubber slinger (10) over shaft (16) and push back
to front bearing (12).
8.
Clean old sealant from mounting frame seal bore.
9.
Install o-ring (20) in shaft groove.
10. Apply non-hardening Type 2 Permatex or similar un-
der stationary seal flange.
11. Place stationary portion of seal (17) over shaft (16)
and press into seal bore cavity. Use a 1-3/8” ID pipe or
PTO adapter to press seal flange evenly on all sides.
12. Install rotating portion of seal (6) over shaft (16) and o-
ring (20) by hand. The two polished seal faces should
face each other. Avoid contacting the polished seal
faces.
13. Insert key (15) in keyway (5) and install impeller (5) on
shaft (16).
14. Place lock washer (4) and
3/8” lock nut (3) on shaft
(16) and tighten nut (3).
15. Replace volute o-ring or gasket (7), volute
(2), and four 3/8” x 3/4” cap screws (9).
16. Position coupler in pump shaft slot and fill
cavity surrounding coupler with
grease.
17. Install motor (18) by aligning
motor tang and coupler slot.
Rotate motor (18) until name-
plate faces up.
18. Install four 5/16” cap
screws (19).
Figure 20
Ace Hydraulic Pump
23373