29
PUMP MAINTENANCE (CONTINUED)
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 section). 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 EQUIPMENT CHECK section.
TROUBLESHOOTING YOUR HYDROSEEDER
®
Because of the tremendous work load usually placed upon the HydroSeeder
®
, minor
malfunctions will occur from time to time. If not remedied immediately, they could lead to
degraded performance and damage to the equipment. This section describes possible problems
and the action to correct them.
1. Foam in the tank and air entrainment:
The mixture of dry materials with water will sometimes cause excessive foaming, while
other materials will cause air entrainment. This is exhibited by erratic discharge and/or a
drop in pressure and distance. Some solutions are:
A. As the slurry level drops in the tank, slow the agitator.
B. Add 2 to 3 oz (59 to 89 ml) of an anti-foaming agent to the tank.
C. If you can determine which additive is causing the air problem, either add it last or
not at all – unless it is the water.
D. Limit recirculation time as much as possible.
2. Plugging or clogging:
Turn off engine and disconnect battery cables before working on
equipment. Failure to comply will result in death or serious injury.
Sometimes, when a stoppage occurs, you will not be able to find anything in the line. When
this happens, it means that the system became airbound instead of plugged. To remedy this,
see FOAMING OF SOLUTION AND LACK OF DISTANCE section of the troubleshooting chart.
Plugging can occur in any one of four places, the valve and recirculation nozzle, the discharge
nozzle, the pump area, and the sump area. The plugging is caused by either foreign objects or
dewatered mulch.
A. Obstruction in the discharge nozzle is determined by a change or stoppage of
spray pattern:
1. Disengage (turn off) the pump clutch by flipping the clutch toggle switch
[with the orange icon (
)] to the OFF ( ) position (all the way down).and
shut down the engine.
2. Remove discharge nozzle.
3. Clean the discharge nozzle. To clean the discharge nozzle, use a cleaning
rod. Insert the nozzle cleaning rod into nozzle to push any buildup out of the
nozzle. Repeat procedure until nozzle is completely cleaned.
Before loosening any clamps, determine if the pipe is hot. If so, let
it cool before attempting to perform repairs. Failure to comply will
result in death or serious injury.
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