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02-01-2023, 01:16 PM
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#15
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 29,439
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Quote:
Originally Posted by Rob_M
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.
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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:
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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02-01-2023, 01:26 PM
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#16
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Senior Member
Join Date: Dec 2019
Location: Canyon Lake, Texas
Posts: 2,944
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Quote:
Originally Posted by Ray,IN
I just looked, that is a 2003 drawing.
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Interesting for sure.
I wonder when it changed back and forth. My 02’s chassis was built in ‘01. OP’s ‘03 was probably built in ‘02. I know the earlier Spartan chassis also had 2 in front 1 in rear.
__________________
2002 American Tradition 40'
Cummins 8.3, Banks 431hp, 1260 tq
Canyon Lake, TX
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02-01-2023, 01:47 PM
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#17
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 29,439
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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.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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02-01-2023, 01:57 PM
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#18
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Senior Member
Join Date: Dec 2019
Location: Canyon Lake, Texas
Posts: 2,944
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air ride
Quote:
Originally Posted by Ray,IN
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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No sir, I have an IFS and the front height valve is in the center attached to an arm connected to the sway bar.
It’s icy and cold out there today, but I will take pics in a few days.
__________________
2002 American Tradition 40'
Cummins 8.3, Banks 431hp, 1260 tq
Canyon Lake, TX
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02-01-2023, 03:22 PM
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#19
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 29,439
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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.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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02-01-2023, 05:40 PM
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#20
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 29,439
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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.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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