Author Topic: Power steering and Fan Hydraulics  (Read 3220 times)

Dwight Wilson

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Power steering and Fan Hydraulics
« on: October 02, 2024, 08:58:30 PM »
Hi Folks, I just want to suggest you all look at your hydraulic lines that run off the PTO on your engines to drive the Cooling fan and the Power Steering. They were installed at the factory in such a way that areas of the lines rub on frame parts. I had an issue a couple years ago with the fan line that failed due to a hole in the line that was rubbing on the fan bracket. That happened on I 15 heading into Las Vegas and I was fortunate to get parked before anything real bad happened , other than about 5 gallons of ATF on my Towed vehicle. Most recently, en route to St George Utah,  I had a total failure of the power steering on my 45,000 lb Patriot Thunder while driving at 63 MPH on the I 15 south of Salt Lake City. We were able to get the coach and our TOAD off the side of the road but things would have been catastrophic if we had been in a mountain pass or busy city. This line runs from the PTO to the fan. We dumped about 10 gallons ATF this time on the road and over the Tow vehicle. Needless to say if was a very expensive tow on a flatbed and an equally unwelcome repair bill. The folks from Dearden Truck Company provided the tow and were wonderful, as was Premier Freightliner in Salina Utah. We were back on the road in two days.
We are grateful that only our bank account suffered though. Please have these lines inspected!
Dwight Wilson
Calgary, Alberta
05 Patriot Thunder C13 Cat
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Bill Lampkin

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Re: Power steering and Fan Hydraulics
« Reply #1 on: October 03, 2024, 12:55:53 AM »
The cat dealer who repaired our pto hose installed two chafe guards on the hose to keep it from happening again. He also inspects same yearly.
 

2005 Patriot Thunder Lexington, 3 slides
40' tag axle (short wheelbase)
525 hp C13

"Goin where the weather suits my clothes..."

Dwight Wilson

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Re: Power steering and Fan Hydraulics
« Reply #2 on: October 03, 2024, 02:36:47 AM »
The guys that did the fan hose a couple years ago did the same with some heavy rubber. This freightliner tech in salina re-routed the longer hose from the PTO to eliminate a future malfunction. Whatever works is best. Good advice to have the lines checked.
Dwight Wilson
Calgary, Alberta
05 Patriot Thunder C13 Cat

Roy Boles

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Re: Power steering and Fan Hydraulics
« Reply #3 on: October 09, 2024, 04:48:37 AM »
I had the same problem a couple of years ago. I found it when we were pulling into a camp ground in North Plat NB. When they ran the hydraulic hoses they simply zip tied them together over time they rubbed against each other and caused a leak. Had new hoses made. When I installed them I wrapped any place they came into contact with each other With heater hose and zip tied them together tightly. I did the same to any hose that came into contact with any thing else by wrapping heater hose around the hydraulic hose. It has worked for me so far. Safe travels everyone.
'98 Marquis Diamante
C-12/Allison 4000