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Laner
10-19-2009, 11:02 PM
The last couple days I have noticed that the spray width on my PG gets narrow after long runs. I did find that the screen was partially plugged once, but I cleaned it and the spray width was back to normal. But since then I have noticed that the spray width will vary a couple feet during long runs and that the droplets coming out do not look evenly dispersed. I have 64 hrs on the unit. Could it be the pressure valve in the tank or is the belt getting worn and starts to slip when it gets hot?

Turf Dawg
10-19-2009, 11:11 PM
Sounds to me like you have trash in the nozzle. Does it spray bad on one side or does it vary?

Grandview
10-20-2009, 06:22 AM
Did you check the nozzle filter again? It could be a bad pump, loose pulley, or a loose/bad belt. However at 64 hours they should not be issues.

Laner
10-20-2009, 07:15 AM
I checked the nozzle and found nothing, but still ran compressed air thru it to make sure it was clear. Still seems to vary in width. I typically only run the high/broadcast nozzle for my apps. The width varies and appears to have larger droplets, which I assume is due to a pressure loss.
I checked the pulleys and they are tight on each shaft. I have only run 3-way (Vessel) herb with crop oil (Premier 90) in the unit, so I wouldn't think there would be any damage to the pump. Sometimes I can let off the spray handle and wait a minute or two and then start spraying again with a normal or close to normal spray pattern.

SpreadNSpray
10-20-2009, 07:40 AM
Bleed the lines by running a pint out of the hand can port on the bottom by the starter rope. The system should be bled anytime you run the spray tank dry.
Check and clean the pick up filter inside the spray tank.
your rpm's should be at least 3450.
Call P.G. they should be able to help you out, could be a bad pump.

RigglePLC
10-20-2009, 10:18 PM
Well Spreadnspray--now that you mention it--how do I get the pump on my Ultra to prime if I accidentally run it dry?
And Laner--it could be the belt. Drop by an auto parts store and ask for "belt dressing". The spray stops squeaks and prevents slipping.

SpreadNSpray
10-20-2009, 11:39 PM
Well Spreadnspray--now that you mention it--how do I get the pump on my Ultra to prime if I accidentally run it dry?
And Laner--it could be the belt. Drop by an auto parts store and ask for "belt dressing". The spray stops squeaks and prevents slipping.

Riggle,
Im not sure with the Ultra's electric pump, I've only had one and it seemed to self prime, or just a quick purge on the hand can port. The Magnum's mechanical pump really needs to be bled good if it starts sucking air.

Lanner,
When you say the problem starts after spraying for a while. and if you "let off the spray handle and wait a minute or two" it works..that makes me think it's an intake issue.
1. Make sure the pick up filter is clean.
2. Check the bottom of the spray tank for bound up chem or anything else that could be a problem.
3 Check for pinched hoses to the pump.

Also try running liquid out of the hand can port at full throttle in neutral to see if it looses flow.

keep us posted:)

UpNorth
10-21-2009, 12:55 AM
I might be repeating some earlier posts, but...

If you ran the tank empty, make sure you bleed the system using the small valve below the shifter. Also, make sure the pick up screen in the tak is nice an clean.

And i agree that it really sounds like the belt is slipping. Maybe after long runs it's getting glazed over and causing it.

If it's none of these, it would have to be the pump in my opinion.

Good Luck.

Grandview
10-21-2009, 06:18 AM
The screen inside the tank could be clogged.

Laner
10-26-2009, 12:05 AM
Checked the nozzle filter the other day a couple times and it appeared to be clean. Then today when I checked it while having spray width decrease and found that it was clogged almost all the way around. I rinsed it out best I could while on the site and it worked much better. I need to get some spare screens to keep with me. Thanks Grandview and others for all the help on things to look for.