Hydraulic Lines

[ktnissen]

Water leak caused me to take the underbelly of and while inspecting I saw my hydraulic hoses have started to get little bubbles, is this common?

[Redapple63]

Definitely time to replace them. Local hydraulic shop should be able to make them up for you once you bring them the old ones.

Bill

[Hoopy Frood]

^^^^^^^^^Ayup.

[FT4NOW]

Very easy to replace, I did a few on my 399, brought the old ones to a hydraulic shop and they made new ones for me. If I recall the system is self bleeding, so no need to prime the lines or anything. Hope someone can back me up on that one, it's been a few years since I did the replacement.

[NB Canada]

Definitely time to replace them. Local hydraulic shop should be able to make them up for you once you bring them the old ones.

Bill

On a 2021 trailer? Wow. That will get costly over time

[Hoopy Frood]

Very easy to replace, I did a few on my 399, brought the old ones to a hydraulic shop and they made new ones for me. If I recall the system is self bleeding, so no need to prime the lines or anything. Hope someone can back me up on that one, it's been a few years since I did the replacement.

Yes, there's nothing to do after replacing the lines except run the pump a few times. I had to replace a line last summer because the outside had crazed, and the fluid was actually leaking through the hose. The prices aren't gawdawful, but it definitely could get expensive if you have to replace them all. Those long run hoses will not be inexpensive. You might check with Grand Design, for warranty coverage. Probably won't happen, but sure can't hurt. Hoses should be good for many years.

[ktnissen]

Decided to just replace the four currently running to the back four jacks since the underbelly is off. I wished Grand Design had replaced them when they had the underbelly off five months ago at the factory. I will replace the front two at a later date since they don't run through the underbelly, due to time and money constraints

I will send GD the receipts but doubt I will get much traction from GD. This coach is a Covid coach with numerous issues to include having the belly off six times, or is it seven, I have lost count. Five water leaks, a back ramp, electrical issues, refrigerator issue, suspension, the water heater is is acting up and black tank burping problems.

[ktnissen]

It is the two lines for the slide outs that are bad not the levelers. Luckily these are easier to get to.

Question. If I retract the slide outs can I disconnect the hoses without pulling up the jacks?

[Hoopy Frood]

It is the two lines for the slide outs that are bad not the levelers. Luckily these are easier to get to.

Question. If I retract the slide outs can I disconnect the hoses without pulling up the jacks?

What you do with the slide hoses shouldn't impact the jacks. They're on a different "circuit" so to speak.

You probably need to ascertain whether the hose you're taking off is to retract or extend. You don't want to pull the hose that has pressure. Which I'm sure you've thought of.

[ktnissen]

Definitely thought about that., lol. Worked on fans as a kid