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Setting the front ride height procedure [message #292808]

Wed, 23 December 2015 12:46

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma:

Senior Member

Hello all
This is the first time I've ever set the front ride height. After searching out old post and going through the shop manual I have put together a guideline/procedure I plan on using.
I am posting this in hope of getting input to improve this procedure or to stop me from doing something stupid before I go in. All heights are based on a 1978 Royale, and I have not weighed the coach. That will come later next year. The coach must be on a level surface to properly adjust. The front end will Not be up on jacks. to adjust the front ride height I haven't found any references in the manual to lift the front end to unload the weight to adjust the front ride height. Once the unloader tool is in place, I will probably remove the adjustment bolt, clean it, and apply a layer of anti seize on it.

1. Set all tire pressures. I'm going 65psi in front, 60psi in the rears. Tires are 225-75r-16

2. Cut 2 blocks of a 4x4 to 8 5/8 inches in length and place under each frame rail in the rear under the height set oval cutouts. The correct height in the rear at the top of the oval is 11 11/16" +/- 1/4" from the ground. When the frame is resting on the pre cut 4x4's then you will have the 11 11/16" rear ride height that you will need to correctly set the front ride height.

3. Release air from both airbags until the bottom of the frame rails are just touching the top of the 4x4 blocks. Make sure the air system is off so the airbags won't inadvertently inflate while adjusting the front height. ( I was originally thinking of completely deflating the airbags but that would put a lot of weight on a small footprint on the frame. Possibly damaging the frame).

4. place torsion bar unloader tool onto the front crossmember with center bolt screwed into the dimple of the torsion bar adjusting arm (porkchop). On my situation, my front height is about a inch too low.

5. Tighten the bolt on the unloader tool until you have reached the correct front ride height by measuring from the ground to the top of the oval cutout on the front frame rail of 13 1/8" +/- 1/4". Once front height is set, tighten the adjustment bolt till its snug on the adjusting arm then release and remove the unloader tool. Now repeat on the other side.

6. If the front ride height is too high, tighten the bolt on the unloader tool to take weight off the adjusting arm. Unscrew adjustment screw. Slowly unscrew the bolt on the unloading tool until you have achieved the correct front ride height. Retighten the adjusting screw until it is snug on the adjusting arm. Remove unloader tool.

7. Drive for a day, while it settles, then recheck.

Any advice, input, suggestions, or ideas to make this more efficient please speak up before I get started. Thanks again, Scott

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

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[Message index]

		Setting the front ride height procedure By: Scott Nutter on Wed, 23 December 2015 12:46
		Re: Setting the front ride height procedure By: Harry on Wed, 23 December 2015 15:18
		Re: [GMCnet] Setting the front ride height procedure By: jimk on Wed, 23 December 2015 15:28
		Re: [GMCnet] Setting the front ride height procedure By: Harry on Wed, 23 December 2015 15:46
		Re: [GMCnet] Setting the front ride height procedure By: Ken Burton on Thu, 24 December 2015 06:02
		Re: [GMCnet] Setting the front ride height procedure By: Mr ERFisher on Thu, 24 December 2015 06:22
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Thu, 24 December 2015 11:15
		Re: [GMCnet] Setting the front ride height procedure By: Ken Burton on Thu, 24 December 2015 12:14
		Re: [GMCnet] Setting the front ride height procedure By: James Hupy on Thu, 24 December 2015 12:17
		Re: [GMCnet] Setting the front ride height procedure By: powwerjon on Thu, 24 December 2015 12:32
		Re: [GMCnet] Setting the front ride height procedure By: powwerjon on Thu, 24 December 2015 12:40
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Thu, 24 December 2015 15:27
		Re: [GMCnet] Setting the front ride height procedure By: USAussie on Thu, 24 December 2015 16:18
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Thu, 24 December 2015 23:46
		Re: [GMCnet] Setting the front ride height procedure By: Larry on Thu, 24 December 2015 13:54
		Re: [GMCnet] Setting the front ride height procedure By: Ken Burton on Fri, 25 December 2015 07:27
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Mon, 18 January 2016 01:19
		Re: [GMCnet] Setting the front ride height procedure By: Ken Burton on Mon, 18 January 2016 02:35
		Re: [GMCnet] Setting the front ride height procedure By: Dolph Santorine on Mon, 18 January 2016 08:06
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Mon, 18 January 2016 09:03
		Re: [GMCnet] Setting the front ride height procedure By: Ken Burton on Tue, 19 January 2016 00:28
		Re: [GMCnet] Setting the front ride height procedure By: Bob de Kruyff on Mon, 18 January 2016 10:45
		Re: [GMCnet] Setting the front ride height procedure By: James Hupy on Mon, 18 January 2016 10:53
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Mon, 18 January 2016 16:52
		Re: [GMCnet] Setting the front ride height procedure By: USAussie on Mon, 18 January 2016 17:44
		Re: [GMCnet] Setting the front ride height procedure By: Guy Lopes on Mon, 18 January 2016 18:50
		Re: [GMCnet] Setting the front ride height procedure By: USAussie on Mon, 18 January 2016 19:34
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Mon, 18 January 2016 21:56
		Re: [GMCnet] Setting the front ride height procedure By: USAussie on Mon, 18 January 2016 22:51
		Re: Setting the front ride height procedure By: jhbridges on Wed, 23 December 2015 16:54
		Re: Setting the front ride height procedure By: John Sharpe on Wed, 23 December 2015 17:13
		Re: Setting the front ride height procedure By: Larry on Wed, 23 December 2015 17:32
		Re: Setting the front ride height procedure By: Scott Nutter on Wed, 23 December 2015 17:38
		Re: Setting the front ride height procedure By: Scott Nutter on Wed, 23 December 2015 17:43
		Re: Setting the front ride height procedure By: Larry on Wed, 23 December 2015 19:20
		Re: Setting the front ride height procedure By: Scott Nutter on Wed, 23 December 2015 19:51
		Re: [GMCnet] Setting the front ride height procedure By: powwerjon on Wed, 23 December 2015 19:55
		Re: [GMCnet] Setting the front ride height procedure By: hal kading on Wed, 23 December 2015 20:26
		Re: [GMCnet] Setting the front ride height procedure By: James Hupy on Wed, 23 December 2015 20:33
		Re: [GMCnet] Setting the front ride height procedure By: Scott Nutter on Wed, 23 December 2015 22:36
		Re: Setting the front ride height procedure By: JohnL455 on Mon, 18 January 2016 17:56

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