45
TROUBLESHOOTING YOUR HYDROSEEDER
®
(CONTINUED)
A. Obstruction in discharge nozzle is determined by a change in or stoppage of the spray
pattern. To clear an obstruction, perform the following steps:
1. Disengage (turn off) clutch.
2. Remove nozzle.
3. Ensure that pump has stopped turning.
4. Clean the discharge nozzle. To clean the discharge nozzle, use the nozzle cleaning rod
attached to the underside of the guard rail. Insert the nozzle cleaning rod into nozzle
to push and buildup out of the nozzle. Repeat procedure until nozzle is completely
cleaned. (Platform Option only.)
Before loosening any clamps, determine if the pipe is hot. If so, let it
cool before attempting to perform repair. Failure to comply WILL result in
severe personal injury or death.
B. If the recirculation system is not working:
1. Disengage (turn off) clutch and stop engine.
2. Remove clamp that attaches recirculation valve.
3. Slide rubber seal back and remove valve assembly.
4. Check valve assembly, recirculation nozzle in discharge pipe, and recirculation pipe
going into tank. Clear any obstructions.
5. Replace valve assembly and slide seal back into place. Lubricate outside of seal.
6. Replace clamp.
C. Obstruction in pump can be indicated by a drop in pressure. If a drop in pressure is
accompanied by a frothy or whitish discharge stream, blockage is in the suction line or sump
area. To clear the pump:
1. Disengage (turn off) clutch and stop engine. Close suction shutoff valve if applicable.
2. Loosen suction pipe clamps. If there is material in tank, stuff a rag into the suction
piping.
3. Remove suction pipe clamp closest to pump.
4. Remove elbow and slowly open suction shutoff valve.
NOTE: If no water comes out, the obstruction is in sump area.
5. Reach into pump and remove obstruction. If it is jammed, the pump suction cover may
have to be removed.
6. Reassemble, removing pipe plug in process.
D. Obstruction in sump area, which is located at the bottom of the tank on the inside where the
suction pipe is attached. Three methods to remove an obstruction in the sump area are as
follows:
1. Clear the sump by backflushing through the discharge plumbing with the water supply
hose. This is the easiest method.
2. Remove the drain plug and run a long pole through the opening and into the sump
area. Remove the obstruction and replace the drain cap.
3. Use a pipe or pole through the loading hatch opening to dislodge the obstruction.
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