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07-28-2018, 11:09 AM
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#1
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Junior Member
Join Date: Jul 2018
Posts: 4
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HWH hydraulic jacks will not retract
I have an older motorhome 2000
Newmar Kountry Star 35 foot with HWH hydraulic jacks. If the temperature outside is below 60° all the jacks will retract. If it’s 70 or above I have to physically pry them back up when the switch is in the store position. Any suggestions.
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07-28-2018, 11:48 AM
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#2
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
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This is what HWH has to say about maintaining their jacks using WD40. http://www.hwhcorp.com/ml47149.pdf
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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07-28-2018, 11:50 AM
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#3
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Junior Member
Join Date: Jul 2018
Location: Camarillo, CA
Posts: 2
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Clean the Jacks and the area around them with WD40. If you haven’t done this in a while, it may take a few times or an entire can to remove built up sludge.
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07-28-2018, 12:06 PM
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#4
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 56,328
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Hi !  Welcome to IRV2! We're sure glad you joined the gang!
I have no experience with hydraulic jacks as our rig has air leveling only. I have heard of many folks using WD40.
Good luck, happy trails, and God bless! 
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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07-29-2018, 05:44 AM
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#5
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Junior Member
Join Date: Jul 2018
Posts: 4
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Quote:
Originally Posted by Rainman737
Clean the Jacks and the area around them with WD40. If you haven’t done this in a while, it may take a few times or an entire can to remove built up sludge.
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I did the WD40 thing, also used a fine grit sand paper to remove any built-up...
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07-29-2018, 07:31 AM
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#6
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Member
Ford Super Duty Owner
Join Date: Jul 2008
Location: Michigan/Arizona
Posts: 92
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Isn’t there a valve you can open to bleed off the pressure to retract the units? Got to figure out the first step in trouble shooting.
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07-29-2018, 07:36 AM
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#7
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Senior Member
Monaco Owners Club Vintage RV Owners Club Holiday Rambler Owners Club
Join Date: Jul 2012
Location: Lexington, SC
Posts: 2,906
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Contact Paul at AZPETE on the Irv2 forum. He works for HWH and can answer your questions. His email is pfmaddox@att.net and his phone number is 602-549-3638. He is a Commercial Member and has posted that his phone is always on, and if not answered, leave a message.
He has helped other on this forum and I am sure he can help you.
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Vera & Ken
1998 Holiday Rambler Imperial, RR8S Chassis
Cummins 6C8.3 mechanical engine, 325HP, 3060 Allison
Towing 2014 Ford Explorer
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07-29-2018, 07:38 AM
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#8
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Nov 2010
Location: Texas
Posts: 4,283
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If there is a grease zerk on jack do that. Also use silicone spray on the chrome every use, NOT WD40. No more not retracting.
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Full Timers.
2015 Fleetwood Discovery 40E on a Freightliner XCS chassis with a Cummins ISL9 pulling 1 and/or 2 motorcycles, '07 Honda Accord OR a 17' Runabout Boat.
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07-29-2018, 09:29 AM
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#9
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Senior Member
Commercial Member
Join Date: Jun 2005
Location: behind the steering wheel
Posts: 2,993
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there is no grease zerk on the hwh jacks. as the manual states, use WD40. this is for cleaning, not lubrication. its in the manual.
silicone has a glue in it to help the silicone stick to the rod. this is what causes the slow retracting.
power gear uses chromed rods, hwh used stainless steel on his jacks.
now we use nickel impregnated steel. almost like anodizing, or plating, but more integrated into the metal.
if all four jacks are giving you a problem, cleaning will help.
if you need help, please contact me at 1-602-549-3638 or pfmaddox@att.net
please leave a message and a number. i do not call back on hangups
i dont sit at a desk, so i will call back asap.
paul f maddox
i do work for hwh. i do not sell parts or solicit service work on this forum.
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07-30-2018, 12:53 PM
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#10
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Senior Member
Newmar Owners Club
Join Date: Dec 2008
Location: Spokane, Washington
Posts: 1,167
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HWH Retracting and Extending Problem
My HWH hydraulic jacks have been very slow to retract over the last few years and I have considered replacing the shuttle valve in the hydraulic unit since the unit is sounds like it is having difficulty pumping when extending. Now after being in indoor storage all last winter, I find that the jacks do not extend eventhough the pump sounds like it is pumping hydraulic fluid. I am wondering if a defective shuttle valve would cause this.
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Ron... WB7DJV
2000 38' Dutch Star | 2006 Grand Cherokee | SilverLeaf VmsPc Engine Monitor | TST TPMS
FMCA, NKK
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07-31-2018, 08:39 AM
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#11
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Senior Member
Commercial Member
Join Date: Jun 2005
Location: behind the steering wheel
Posts: 2,993
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if all the jacks are effected, i would have the pump pressure checked first. the shuttle valve could be causing the problem, but do the diagnosis first. its way cheaper.
if you remove the shuttle valve, check the 3/16 nut on the bottom of the inside spindle.
you may be able to just replace it. i get mine at frys electronics.
this is not a hwh standard, or recommended repair., and we dont do that as a repair.
we replace the valve. i do this on my own coach.
if you cant maintain the same tolerances, just replace the valve.
no i dont have the measurements.
if you need a service manual, let me know what system you have, the year and make of your coach. i will email it to you. its too large for me to text.
pfmaddox@att.net
paul maddoxi do work for hwh. i do not sell parts or solicit service work on this forum.
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07-31-2018, 05:49 PM
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#12
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Senior Member
Winnebago Owners Club
Join Date: Jun 2013
Location: Full-timer/volunteer w/SOWERS
Posts: 3,967
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Quote:
Originally Posted by Tstafford361
I have an older motorhome 2000
Newmar Kountry Star 35 foot with HWH hydraulic jacks. If the temperature outside is below 60° all the jacks will retract. If it’s 70 or above I have to physically pry them back up when the switch is in the store position. Any suggestions.
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I didn't read all the replies so I hope I am not a parrot here.
Do you have the NEW spring design on your HWH jacks? The new springs are tapered at the ends.
__________________
Rick & Melissa Young, 2011 Itasca Meridian 40U, Frtliner XCL, Cummins ISL 380HP/DEF, Allison 3000 MH, 2014 Honda CR-V, SMI AF1, Blue Ox, EEZ TPMS, TruCenter steering control
Servants On Wheels Ever Ready. Best job we ever paid to do . (full time volunteers)
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08-01-2018, 08:55 AM
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#13
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Senior Member
Commercial Member
Join Date: Jun 2005
Location: behind the steering wheel
Posts: 2,993
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if you have the older springs, they have accumulated rust and grime between the turns on the spring. if you remove them, they are often two or three inches longer than original. when a cylinder has to be pried up, springs do not normally help.
you can try to clean them if you have them off. soak them in a pan filled with regular coca cola. the acid in that will clean them of both rust and grime.
of course you can just replace them. thats much easier.
paul maddox
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