Great Plains TS1000 Operator Manual - Manual (Page 28)

26 TS750 and TS1000 Trailer Sprayer 500-104M 4/8/03
Great Plains Mfg., Inc.
TS750 and TS1000
Refer to Figure 23
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. If fluid leaks out between the
front suction housing (5) and the rear volute housing (8),
the housing gasket may be dried out. Give the gasket (6)
adequate time to absorb moisture and swell up. If neces-
sary, retighten the volute housing (8) by alternating on op-
posite sides until all nuts (9) are torqued to 16 - 18 ft.-lbs.
It is a good practice to apply grease to both sides of the
gasket (6) to prevent shrinkage.
If seal replacement is required:
1. Disassemble pump and clean all components.
2. Assemble the ceramic ring seat of the mechanical
seal (7) into the volute housing (8) of the pump. Make
sure the ceramic seat is positioned square into the vo-
lute housing.
3. Clean off any grease or dirt from pump shaft (10) and
dry the shaft so the rubber bellows on the mechanical
seal will adhere to the shaft properly when assembled.
4. Bolt up the pump input bearing housing (not shown) to
the volute housing (8) using bolts (2), (3) and (4) with
spacers (not furnished) for alignment and assembly of
the shaft seal.
5. Assemble the seal (7) without its spring, on the pump
shaft by pushing on the inside rubber portion of the
seal using water as the lubrication. The graphite seal
face should touch the white ceramic seat face. The
rubber bellows adhering to the pump shaft should not
protrude more than 1/16" beyond the stainless steel
ring located on the impeller side of the seal.
6. Assemble the seal’s spring and the impeller, being
careful not to move the mechanical seal that has been
positioned on the pump shaft. Torque the impeller bolt
(1) 16 - 18 ft./lbs.
7. Remove the three bolts and spacers. Using gun
grease, lubricate the gasket (6). Assemble the gasket
(6) and suction housing (5) using bolts, flat washers
and locknuts. Torque nuts 16 - 18 ft./lbs.
Figure 23
Great Plains Pump Assembly
11591