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Old 02-01-2023, 01:16 PM   #15
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Quote:
Originally Posted by Rob_M View Post
What year? My 2002 AT on Spartan MM chassis has 1 in front and 2 in the rear as mentioned above. 2002 and 2003 AC’s are very similar at least in appearance.
EDITED:

I just looked, that is a 2003 drawing from Travel Supreme.



My Spartan MM chassis with IFS is a 1999 with 2 front and 1 rear ride height valves. The rear is a different brand than the 2 front ones.
Once set, ride height does not change with the weight on the chassis, ride height is maintained at set-point by this valve adding/reducing air pressure volume in air springs.
Here is a 2001 drawing directly from Spartan:
Attached Files
File Type: pdf Spartan Chassis suspension Air System 2001.pdf (159.0 KB, 12 views)
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Old 02-01-2023, 01:26 PM   #16
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Originally Posted by Ray,IN View Post
I just looked, that is a 2003 drawing.

Interesting for sure.
I wonder when it changed back and forth. My 02ís chassis was built in Ď01. OPís Ď03 was probably built in Ď02. I know the earlier Spartan chassis also had 2 in front 1 in rear.
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Old 02-01-2023, 01:47 PM   #17
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Rob, I edited my reply #15 to add the 2001 Spartan drawing. Do you have IFS or solid front axle? All my drawings are for the Reyco-Granning IFS Spartan used. If you have a solid beam axle that explains the difference.
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Old 02-01-2023, 01:57 PM   #18
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air ride

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Originally Posted by Ray,IN View Post
Rob, I edited my reply #15 to add the 2001 Spartan drawing. Do you have IFS or solid front axle? All my drawings are for the Reyco-Granning IFS Spartan used. If you have a solid beam axle that explains the difference.

No sir, I have an IFS and the front height valve is in the center attached to an arm connected to the sway bar.

Itís icy and cold out there today, but I will take pics in a few days.

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Old 02-01-2023, 03:22 PM   #19
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Page 27 Of the Reyco-Grannins suspension service manual
explains how to adjust each side of the front air suspension.
The only thing I can think of is, Fleetwood changed the Reyco-Granning design for both front and rear suspension modules to fit their design needs.
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Old 02-01-2023, 05:40 PM   #20
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I think I've got this figured out;. Do you have a Reyco-Granning IFS1460 model front suspension? If you do, it does have only one front ride height valve.(pg 32)
source: https://reycogranning.com/sales-service-literature/


Sorry S Y i totally sidetracked your question while getting this 1 or 2 ride height valve thing sorted out.
I would begin with closely inspecting the compressed air line to each air spring for any damage and the presence of any flow control valves.
If the 2 rear ride heights are correct, that should make the front level too, as mine works exactly the opposite with only 1 rear valve.



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