50
CLUTCH/PUMP COMBINATION (CLUMP) MAINTENANCE (CONTINUED)
B. IMPELLER CLEARANCE –
To bring the pump back to proper tolerance, proceed as
follows:
1. Loosen four bolts (1B), and push pump suction cover (1) into pump casing (5) until pump
suction cover touches the pump impeller (3). Pump impeller should be in full contact with
pump suction cover.
2. Tighten eight bolts (5B) finger-tight. Pump impeller should rub the pump suction cover and
not turn easily through one revolution.
3. Tighten four bolts (1B) hand tight until they touch the pump casing (5).
4. Back off eight bolts (5B) 1-1/2 turn.
5. Tighten four bolts (1B) 1-1/2 turn and tighten four nuts (1N) to 15 lb-ft (20 N•m).
6. Tighten eight bolts (5B) to 15 lb-ft (20 N•m). Clearance gap should be about 0.040 in.
(1.00 mm). Check to make sure if pump impeller turns freely through one revolution.
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) holding 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 toolbox,
and position it so that 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 wrench should face inward toward the
pump impeller and be positioned between any two of the pump impeller fins. Bolt wrench
securely in place with one of the pump suction cover bolts (5B). Using a pipe wrench
on the clump shaft (11), unscrew pump impeller by turning clump shaft in a clockwise
direction. Be careful not to unscrew pump impeller too far before removing the pump
impeller wrench.
Do not turn the shaft backward with a pipe wrench. This will unscrew
pump impeller from pump shaft. Consequently, when clutch is
engaged (turned on), the pump impeller will screw onto pump shaft with a force great enough
to break pump impeller. Failure to comply could result in minor or moderate personal injury.
Failure to comply could also result in product or property damage.
D. INSTALLING NEW SEAL ASSEMBLY
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 above steps in CLEANING, and remove pump
casing (5) by removing three bolts (10B) that hold casing to the clutch/pump drive housing
(10).
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 outward. Rebolt the pump
casing onto the clutch drive housing using three bolts (10B). 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 assembly
with a light oil lubricant and check to make sure the steel ring is stuck (glued) to the end
of the assembly. Slide the bellows assembly onto pump shaft and push till the steel ring is
against the ceramic seat.
Summary of Contents for HydroSeeder T90
Page 4: ......
Page 29: ...23 DISPLAY LIST SINGLE DATA FORMAT DUAL DATA FORMAT...
Page 68: ...NOTES 62...
