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Author Topic: Pressure Lubricator  (Read 302 times)

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Offline HydroRI

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Pressure Lubricator
« on: Mon October 09, 2017, 04:44:20 PM »
So this is my second Finn hydroseeder. On my T75 I could go an entire season without re-filling the grease cup. Now that I own the T120 I am seeing the same. It seemed the first couple of weeks I owned it, I went through about 3/4 of the cup. Now it seems I am hardly using any again. Hydroseeder now has 77 hours on it and I have only used eqivalent to about 1 full cup (I am referring to the brass cup that is spring loaded that holds the grease.) This is supposed to be a service daily point of maintenance.

Does it only use grease if the pump heats up? I am very conscious that I do not keep pump engaged unless slurry is moving, never allowing pump to get warm. I unscrewed cup today, grease looks good and I can stick a wire through the stem so I know there is no obstruction.

Anyone else not use a lot of grease, is this normal?
FINN T-120T Stainless Steel    Hydroseeding in Rhode Island

Offline landscaper1009

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Re: Pressure Lubricator
« Reply #1 on: Tue October 10, 2017, 09:50:34 AM »
With some new Finn pumps, the auto lubricator does use more grease during the brake in period. If it continues, the seal may have been put in backwards (doesn't happen often) and you can discuss that with your dealer or representative. 

HydroGrass is a great company and they are very knowledgeable.

If it uses no grease, check to make sure the lubricator doesn't have a clog or something that may be blocking the grease from getting to the pump seal.



TB Master LLC
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Offline HydroRI

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Re: Pressure Lubricator
« Reply #2 on: Tue October 10, 2017, 02:32:33 PM »
Definitely not clogged. I was just wondering under certain situations if it uses more grease than others such as the pump getting hot.
FINN T-120T Stainless Steel    Hydroseeding in Rhode Island

Offline landscaper1009

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Re: Pressure Lubricator
« Reply #3 on: Tue October 10, 2017, 05:14:42 PM »
To the best of my knowledge, the heat would come from lack of lubrication. 
TB Master LLC
P/T ECS
Permanent / Temporary Erosion Controls Solutions
1009 Londondery Dr
Bel Air, MD  21015

410-627-6110 Cell
Tom Master
tbmaster1009@gmail.com
Formerly Wolbert & Master, Inc.
Est. 1968

Offline HydroRI

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Re: Pressure Lubricator
« Reply #4 on: Tue October 10, 2017, 07:49:29 PM »
To the best of my knowledge, the heat would come from lack of lubrication. 

I had my pump heat up once or twice on my T75 when I did not realize the circulator line was clogged using the remote valve.

Thanks for the feedback, I will keep an eye on it.
FINN T-120T Stainless Steel    Hydroseeding in Rhode Island

Offline Turboguy

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Re: Pressure Lubricator
« Reply #5 on: Thu October 12, 2017, 12:07:13 PM »
I have a question for you.  What kind of grease are you using in the auto lubricator?  I believe it requires a sodium based grease and if you were using regular grease that could be the problem. 
Turbo Turf HS-300-XPW +The new for next year HS-400-ZH.

Offline Jumpstart

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Re: Pressure Lubricator
« Reply #6 on: Fri October 13, 2017, 11:38:52 PM »
Hi RI
I haven't seen much grease used either in my T75
This grease cup is for the rubber radial seal on the back of the pump shaft to prevent water/ slurry from getting out.
But in my opinion it's only a back up for the pumps mechanical , face to face seal , who's job is to seal water and slurry from leaking out the back of the pump.
This mechanical seal is never 100% and so some seepage goes by and hence the radial seal.
I bet you could remove this radial rubber shaft seal and only see some occasional to steady leak but with no damaging effects.
The auto grease cup supplements lubricant to this small area and can't handle a grease gun appllication without possible damaging the seal itself, and with the minor mechanical seal leakage , gets enough lubricant.
As for overheating , you'd have to really cook the pump to get that seal to get damaged , but again so what all it would do is leak a bit , not effecticing performance , just the environment.
Study the attachment or your manual picture to see what I'm talking about.

#6 is rubber radial seal feed by the grease cup
# 5 mechanical , face to face seal doing all the work . The pic arrow points to the spring but to the left is the seal forced together by that spring..
« Last Edit: Fri October 13, 2017, 11:43:57 PM by Jumpstart »

Offline HydroRI

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Re: Pressure Lubricator
« Reply #7 on: Sat October 14, 2017, 12:47:39 AM »
I have a question for you.  What kind of grease are you using in the auto lubricator?  I believe it requires a sodium
 based grease and if you were using regular grease that could be the problem.

Ray, you are correct. That is what I have always used nothing but.

Thanks jumpstart for the detailed explanation. It makes more sense to me now.
FINN T-120T Stainless Steel    Hydroseeding in Rhode Island

Offline Jumpstart

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Re: Pressure Lubricator
« Reply #8 on: Sat October 14, 2017, 08:17:41 AM »
I should add that this seal would also prevent dirt from entering that side as well , which could contaminate the mechanical seal , causing leakage .......

Offline dawrule

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Re: Pressure Lubricator
« Reply #9 on: Sat October 14, 2017, 05:35:29 PM »
Pressure Lubricators and Leakage....if this was any other internet forum....  ;D

Offline Smerfdog

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Re: Pressure Lubricator
« Reply #10 on: Tue October 17, 2017, 10:50:26 PM »
Our T-75 doesn't use any grease and it makes me wonder why not. Not complaining : )
We check that the thumb wheel and stem is in the up position before use. meaning full of grease.
The cup is removed at the end of the season and checked.

HydroRI - Thanks for brining up the topic.
Finn T75

 

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