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Topic: Hydraulic fan leak/seepage advice (Read 520 times) previous topic - next topic

Hydraulic fan leak/seepage advice

In for annual service and a few PM projects. During inspection see evidence of leaking or seepage in the cooling fan system. Look like an emergency? No seepage is hitting the ground. Would prefer to schedule after this Fall to address (probably new seals?). Should we be concerned? Thoughts on intermediate actions? The cooling system is working absolutely fine.

PS, my ver thorough tech is not making a call just showing me the issue as he has learned we try to do stuff in advance not in emergency.

Alan & Gerri Ortiz
1996 U295 36 ft.
"Rocinante"
Hartwell, Georgia
1999 Subaru Forester
Build No. 4957 Motorcader 17399

Re: Hydraulic fan leak/seepage advice

Reply #1 –
When I bought our coach the motor seal leakage looked similar to yours, When talking to a PO he said it had looked like that for a couple of years and wasn't worried about it. During the next winter I replaced both seals. Personally I believe a seal could blow just as easy without any previous leakage and would wait until it is convenient to change out.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Hydraulic fan leak/seepage advice

Reply #2 –
Don't want to jinx myself, mine has looked like that for 6 Years
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Hydraulic fan leak/seepage advice

Reply #3 –
If it is leaking on the back side it will take the 120.00 seal kit.  If leaking around fan shaft you can get a metric seal for about 10.00
The seal is 30mm OD. 20mm ID and 7mm thick
Chris
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR

Re: Hydraulic fan leak/seepage advice

Reply #4 –
Alan,

Your photos look just like mine.  I was in the process of changing hydraulic oil and filter for the cooling fan and decided, like others have, to incorporate some Lucas Oil 10019 White 32 Ounce Oil Booster / Stop Leak (about 20%) and see what happens.  In two years, I've never had to add any oil.  Seepage is very minimal.  Certainly not worth removing fan motor and risking a more serious problem. 

YMMV

jk
Jack and Cathy
1992 U280 Unihome 36' Build #4034
Cummins 8.3 /  Allison MT647/ PacBrake
Apopka, FL / Barre Center, NY

Re: Hydraulic fan leak/seepage advice

Reply #5 –
Mine look exactly the same.....as Paul would have said " Floor it"

H
Hans & Marjet
1995 U300 "Ben" (#4719)
3176B Cat,4060HD,Jake
SKP#139131
Motorcade#17579
2006 Honda Element (towed)