Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > MOC on M.A.R.S. > Repairs & Service
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 07-29-2019, 08:28 PM   #1
lundwc16
Montana Fan
 
Join Date: Oct 2015
Location: Aquebogue
Posts: 104
M.O.C. #17988
New Hydraulic Lines

The slides on our 2010 Montana are hydraulic & I'm getting ready to replace the lines on all three slides. I have the underbelly down, & have the bedroom slide ram exposed, & old lines measured & new lines made. The question is after installing new lines, how to bleed the system?
Thanks, John
__________________
2010,3075RL, Hickory
2016 Ford, 6.7, 4X4, SRW
lundwc16 is offline   Reply With Quote
Old 07-29-2019, 08:43 PM   #2
Carl n Susan
Site Team
 
Carl n Susan's Avatar
 
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 3,984
M.O.C. #4831
I believe they are self-bleeding. Just run them in and out without letting the hydraulic tank go empty.
__________________
Carl (n Susan) Youngren
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

Carl n Susan is online now   Reply With Quote
Old 07-29-2019, 09:15 PM   #3
lundwc16
Montana Fan
 
Join Date: Oct 2015
Location: Aquebogue
Posts: 104
M.O.C. #17988
Quote:
Originally Posted by carl n susan View Post
I believe they are self-bleeding. Just run them in and out without letting the hydraulic tank go empty.

Thanks for the quick response. I thought that when the slides retract & the fluid is sent back into the tank, air trapped in the system would go back to the tank also, & just bubble up. Depending on how far I get in the heat we have been having I'll let ya know Tues. or Wed.
John
__________________
2010,3075RL, Hickory
2016 Ford, 6.7, 4X4, SRW
lundwc16 is offline   Reply With Quote
Old 07-30-2019, 12:52 PM   #4
lundwc16
Montana Fan
 
Join Date: Oct 2015
Location: Aquebogue
Posts: 104
M.O.C. #17988
Well we aren't ready to hit the road yet, but got all the new lines hooked up today & the slides working. The above advice was correct & the system bled itself. Still wires & underbelly hanging down, but it's 88 deg out & I had enough of crawling around under the Montana for today. Thanks car n susan
John
__________________
2010,3075RL, Hickory
2016 Ford, 6.7, 4X4, SRW
lundwc16 is offline   Reply With Quote
Old 08-26-2019, 10:17 PM   #5
McRod
Established Member
 
Join Date: Mar 2016
Location: Austin
Posts: 27
M.O.C. #18363
Where did you get your lines from/made?
McRod is offline   Reply With Quote
Old 08-26-2019, 10:31 PM   #6
h2ojocky
Montana Master
 
Join Date: Nov 2012
Location: Rancho Santa Margarita
Posts: 507
M.O.C. #13025
I ordered mine from Lippert.
__________________
Russ and Linda, So. California
2004 Chevy Silverado 2500 HD, D/A, SRW, SB
2005 2955RL, Pullrite Superglide 16K hitch. Bridgestone Duravis R500 tires. EZ Flex Equilizers with wet bolts.EMS HW50C
h2ojocky is offline   Reply With Quote
Old 08-27-2019, 07:21 AM   #7
lundwc16
Montana Fan
 
Join Date: Oct 2015
Location: Aquebogue
Posts: 104
M.O.C. #17988
I took the shortest one, which went to the bedroom slide, to a local shop that makes hydraulic lines. I took that line for a sample of size & type of fittings, & measured the other lines I wanted made for length. Made the new lines while I waited.
John
__________________
2010,3075RL, Hickory
2016 Ford, 6.7, 4X4, SRW
lundwc16 is offline   Reply With Quote
Old 08-27-2019, 09:31 AM   #8
McRod
Established Member
 
Join Date: Mar 2016
Location: Austin
Posts: 27
M.O.C. #18363
When you take one off, do you need to cap it off so hydraulic fluid don't go everywhere?
McRod is offline   Reply With Quote
Old 08-27-2019, 01:44 PM   #9
lundwc16
Montana Fan
 
Join Date: Oct 2015
Location: Aquebogue
Posts: 104
M.O.C. #17988
I did not as it wasn't under pressure, I did the job with the slides closed, if you do it with the slides open, then the rams will be full of fluid, & that may cause fluid loss.
John
__________________
2010,3075RL, Hickory
2016 Ford, 6.7, 4X4, SRW
lundwc16 is offline   Reply With Quote
Old 08-27-2019, 02:40 PM   #10
mlh
Montana Master
 
Join Date: Oct 2004
Location: Salem
Posts: 4,890
M.O.C. #2283
Why did you replace all of your hydraulic hoses?
Lynwood
__________________
www.harrellsprec.com
Lynwood Harrell
323 RL HC 2008 F250
mlh is offline   Reply With Quote
Old 08-27-2019, 04:33 PM   #11
Mikendebbie
Montana Master
 
Mikendebbie's Avatar
 
Join Date: Jan 2018
Location: Austin
Posts: 503
M.O.C. #21044
Hydraulic fluid

I quizzed Lippert on replacing a jack leg and what to do with the hoses when disconnected, and they said to keep the ends up and donít let them drop because the fluid would run out, and try to have the parts in place to quickly install and hook the hoses back up.

I am way over my skis here in giving advice on a hydraulic system, but it made sense to me that a low end of a hose would siphon or provide a low point for the fluid to leak out of the reservoir. I will let you know because I think the curbside rear jack leg I bent last year will go out on me someday. For now I have it back to fairly plumb and it is working correctly every time! Knock on wood!
__________________
Mikendebbie Austin TX - Aggie '77
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
+ two cute Aussies Gus+Fern
Mikendebbie is offline   Reply With Quote
Old 08-27-2019, 06:52 PM   #12
lundwc16
Montana Fan
 
Join Date: Oct 2015
Location: Aquebogue
Posts: 104
M.O.C. #17988
Quote:
Originally Posted by mlh View Post
Why did you replace all of your hydraulic hoses?
Lynwood

I replaced 4 hoses because two of them that were frayed & leaking went to rams at the rear of the trailer. That required most of the underbelly to come down for access. At various points along the way they are zip tied to the frame & or wire harness so they can't be pulled through. As long as the underbelly was down I decided to replace them all. I'm a couple clicks north of 70 & it's not a job I want to do again on my back.
John
__________________
2010,3075RL, Hickory
2016 Ford, 6.7, 4X4, SRW
lundwc16 is offline   Reply With Quote
Old 08-27-2019, 06:57 PM   #13
h2ojocky
Montana Master
 
Join Date: Nov 2012
Location: Rancho Santa Margarita
Posts: 507
M.O.C. #13025
I replaced mine because when I was having some welding done on my grey tank support some slag fell on the hoses and ruptured both lines. The hardest part was R&R of coroplast. I ran the new hoses inside pvc so if I ever have to replace them again I can just pull them through the pvc.
__________________
Russ and Linda, So. California
2004 Chevy Silverado 2500 HD, D/A, SRW, SB
2005 2955RL, Pullrite Superglide 16K hitch. Bridgestone Duravis R500 tires. EZ Flex Equilizers with wet bolts.EMS HW50C
h2ojocky is offline   Reply With Quote
Old 08-27-2019, 08:44 PM   #14
mlh
Montana Master
 
Join Date: Oct 2004
Location: Salem
Posts: 4,890
M.O.C. #2283
Quote:
Originally Posted by lundwc16 View Post
I replaced 4 hoses because two of them that were frayed & leaking went to rams at the rear of the trailer. That required most of the underbelly to come down for access. At various points along the way they are zip tied to the frame & or wire harness so they can't be pulled through. As long as the underbelly was down I decided to replace them all. I'm a couple clicks north of 70 & it's not a job I want to do again on my back.
John

Thanks!
Lynwood
__________________
www.harrellsprec.com
Lynwood Harrell
323 RL HC 2008 F250
mlh is offline   Reply With Quote
Old 08-27-2019, 10:09 PM   #15
dieselguy
Montana Master
 
Join Date: Feb 2005
Location: Haysville
Posts: 3,557
M.O.C. #3085
Our cylinders will always have some oil in them whether retracted or extended as it takes fluid pressure to move them either way. When retracted, the rod side of the cylinder will have less oil as the rod itself displaces some of the volume of the cylinder. Unless you cap the lines themselves when you remove both ends from their fittings, you'll get some mess as there is nothing to hold the oil inside ... it's unavoidable.
dieselguy is offline   Reply With Quote
Old 08-30-2019, 02:57 PM   #16
lundwc16
Montana Fan
 
Join Date: Oct 2015
Location: Aquebogue
Posts: 104
M.O.C. #17988
At the shop where I had the new lines made I asked for plugs & caps for the lines & rams when I disconnected the lines. They had both & gave me 4 of each. The biggest mess came from the fluid that was in the old lines as I was removing them, until my old brain remembered I had the plugs & caps.
John
__________________
2010,3075RL, Hickory
2016 Ford, 6.7, 4X4, SRW
lundwc16 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 12:13 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×