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Tires, Wheels, Brakes, Steering and Suspensions Discussion of preventative/corrective maintenance and other technical issues regarding your coach's Tires, Wheels, Brakes, Steering and Suspensions and related components.

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  #1  
Old 11-06-2016
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Default Step won't work

The air assist cylinder shaft for the step will not move with the air lines connected, but will move freely with air lines disconnected. I noticed one the electrical controlling switches leaked a bit of air and no way to tighten so it wouldn't leak. I can't post a pic of the switches. Has anyone had a problem like this?
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Old 11-06-2016
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Default Step won't work

The air assist cylinder shaft for the step will not move with the air lines connected, but will move freely with air lines disconnected. I noticed one the electrical controlling switches leaked a bit of air and no way to tighten so it wouldn't leak. I can't post a pic of the switches. Has anyone had a problem like this?
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Old 11-06-2016
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Disconnect the step air cylinder from the step before doing the following test to ensure you are not hurt.
Pull the electrical plugs off the solenoids on the air step valve and using an external 12 volt source apply power across the terminals to see if the valves will operate. I suspect you may have a faulty solenoid or a bad pressure switch which feeds it.
If the solenoids work and the piston moves in and out as you test each solenoid, then the pressure switch is possibly faulty.
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1990 WB 40 "Northern Lights"
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Old 11-06-2016
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Default Solenoid Switch

Would you where I might get a new switch if that turns out to be the problem?
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Old 11-06-2016
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PM sent
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1990 WB 40 "Northern Lights"
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  #6  
Old 11-06-2016
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Air Step Pressure Switch is a Furnas #69MB108836U Pressure Control Switch On 70psi / Off 90psi

Air valve and solenoids can be purchased from Fabco-Air in Gainsville, FL. You will need to select your pipe size either 1/8" or 1/4" and solenoid terminals. You will need the 4 way and in 12 volts.

The one I needed was for 1/8" pipe fittings: Product ID: 14FF-4 Product Name: 14 Series Male Mini-DIN Housing, 4 way Voltage : 12 VDC - 12 Volts DC

http://store.fabco-air.com/proddetail.php?prod=14FF-4
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1990 WB 40 "Northern Lights"
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  #7  
Old 11-06-2016
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We also have that valve on our website in stock
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Old 11-06-2016
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This is what I bought for my repair. Ports are 1/4". Purchased from Parker Pneumatics.

Parker P2LBX592EEHDDG47$127.00
2 Exhaust mufflers$24.00

D
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87 35' FC
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Old 11-06-2016
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There's a lot written about the steps. I'll bet you'll find what you need with a site search. Good luck.

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Old 11-07-2016
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On my 89, that pressure switch merely puts the step out when that last puff of air (60psi) is still available. Other than this last chance step extension, it serves no purpose in the step control.
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