24
C. CLEANING
1. To clean pump impeller (3), loosen the two Victaulic pipe clamps and remove suction pipe
assembly. The eye of the pump impeller can then be seen through the pump suction cover
(1) and is readily accessible for cleaning.
2. To further access pump impeller, remove eight bolts (5B) that hold pump suction cover (1)
in place. Remove pump suction cover, being careful not to damage O-ring (2).
3. To remove pump impeller, take the pump impeller wrench, which is stored in the tool box,
and position it so the hole is aligned with any of the eight tapped holes in the front of
the pump casing (5). The 90-degree leg of the pump impeller wrench should face inward,
toward the pump impeller and be positioned between any two of the pump impeller fins.
Bolt pump impeller wrench securely in place with one of the pump suction cover bolts (5B).
Using a pipe wrench on the pump shaft (9), unscrew pump impeller, turning pump shaft in
a clockwise direction. Be careful not to unscrew pump impeller too far before removing the
impeller wrench.
D. INSTALLING NEW SEAL ASSEMBLY
NOTE:
Do not unwrap new seal assembly until you are ready to
install. All parts of seal assembly are packed in sequence of
installation.
1. To replace seal assembly (4), perform the steps under CLEANING, and remove pump cas-
ing (5) by removing four bolts (7B) that hold the pump casing and pump casing bearing (7)
to pump frame (15).
2. After cleaning all parts, including pump shaft, begin reassembly of pump. Install seal grease
retainer (6) with the cavity portion of the seal facing inward. Rebolt pump casing and pump
casing bearing (7) onto the clutch housing using four bolts (7B). Using a light oil lubricant
(such as 3-in-1 oil), install the ceramic seat with its neoprene holder into the seal recess,
making sure it is square with the pump shaft. Lubricate the inside of the bellows assem-
bly with a light oil and check to make sure the steel ring is stuck (glued) to the end of the
assembly. Slide the bellows assembly onto the shaft and push until the steel ring is against
the ceramic seat.
3. Install the seal spring on the hub of the impeller. After coating the threads on the pump
shaft with an antiseize compound, install the impeller, seating it securely.
4. Utilizing the O-ring (2), reinstall pump suction cover using eight bolts (5B). At this time,
check to see that the pump runs freely. If pump impeller rubs the pump cover plate, either
the pump impeller is not tight on the pump shaft or the suction cover plate needs readjusted
(see IMPELLER CLEARANCE on page 23). Tighten bolts uniformly using 15 lb
-
ft (20 N•m)
on the torque wrench.
5. After reinstalling the suction pipe assembly, lubricate, and tighten the two Victaulic clamps.
Service the automatic pressure lubricator. See page 8.
Summary of Contents for T30 HydroSeeder MO
Page 2: ...NOTES ...