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Old 02-02-2016, 08:30 PM   #71
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Try adding another throttle return spring at the carb.

A pneumatic throttle has a lot of pull and may get wonky if no good load.

May also need to clean out both by removing the inlet hose and squirting marvel mystery oil but do homework first to be sure of correct process.
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Old 02-02-2016, 09:43 PM   #72
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Try adding another throttle return spring at the carb.

A pneumatic throttle has a lot of pull and may get wonky if no good load.

May also need to clean out both by removing the inlet hose and squirting marvel mystery oil but do homework first to be sure of correct process.
Gotcha on the spring, will check that tomorrow. Unclear on what parts might need cleaning. Sorry, air ride and throttle control is new to us.
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Old 02-03-2016, 08:09 AM   #73
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Under the foot peddle is a valve and at the engine is a servo.

The are system should have dryers and filter so no crud should be in it but if it does not have air brakes then all bets are off.

You should look close or use a phone camera to get photos so you could identify the parts then yiu could seek specific advise for servicing them.

They may have a hidden oil port.
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Old 02-03-2016, 11:59 AM   #74
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The gas pedal issue you describe sounds to me like the proportional valve acting up.
The valve is underneath the gas pedal itself. Seems to be operating as open/close valve rather than a proportion valve were it adjust how much pressure passes through in relation to how much pressure you put on the pedal.
I notice, the preventive maintenance manual calls for slightly lubricating the gas pedal mechanism in you unit.
I would diagnose by (with the air system charged) disconnecting the air outlet port on the valve in question and evaluating how much air exits out of the valve in relation to how much pressure you put on the pedal. Light pressure on pedal should be a hissing and heavy pressure, a significant air leak. If that clears reasonable, I would move back to the engine between the carburetor linkage and follow back to an air line. There will be your servo unit.
When I get back home from work this evening, I will take a look to my air suspension system and see if I can be of any help.
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Gilbert
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Old 02-03-2016, 12:59 PM   #75
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If the pic posts, this is the culprit. I mashed the accelerator while Dwayne watched for response. You could see it's the large spring loaded part that holds the throttle closed that was binding. He tried opening the throttle by hand and couldn't budge it.
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Old 02-03-2016, 01:08 PM   #76
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Old 02-03-2016, 01:15 PM   #77
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Old 02-03-2016, 01:18 PM   #78
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Old 02-03-2016, 01:20 PM   #79
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Final floor shot.
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Old 02-03-2016, 01:23 PM   #80
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Overhead bed, now converted to a place for 3 dog crates. [ATTACH]
[/ATTACH]
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Old 02-03-2016, 01:25 PM   #81
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Upper bed open. Click image for larger version

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Old 02-03-2016, 02:38 PM   #82
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Throttle response fixed! �� Dwayne cleaned and lubed everything, works like new!
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Old 02-03-2016, 03:07 PM   #83
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That's looking fantastic inside! So good to see this old girl come back to life.
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Old 02-04-2016, 09:55 AM   #84
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Working on the furnace now. The fan motor was seized up. Ordered a replacement, got it in the mail yesterday. As soon as it's in, we start gluing the floors. Taking her on a weekend trip to Caney Lake for a test run this weekend.
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