If the step fails to operate:
• Verify that the step switch is ON.
• Check the main power supply for the step. A 25 amp 12 Volt DC
fuse is located in the front distribution panel.
• A magnetic door jam switch is used to control step operation. Use a
separate magnet to apply a “trigger” to the door jam switch.
Rotate test magnet to align polarity field.
• A 7 ½ amp ATO blade fuse is used to illuminate the STEP OUT
dash warning light. The fuse is located on the front run box.
WARNING: If the motorhome is driven with the step in the
extended position there is the possibility of causing major
damage to both the step and the motorhome.
The motorhome is equipped with a sliding stepwell cover that is extended
and retracted by the use of a dual action air cylinder. The air cylinder is con-
trolled by an electrically operated air valve. The air solenoid, known as a
“MAC” valve, receives air pressure from the front air tank. The “MAC” valve
will direct the air pressure to either side of the dual action air cylinder, moving
the stepwell cover in or out. The stepwell cover will not operate without suffi-
cient air pressure (approximately 60 psi).
CAUTION: The stepwell cover is under air pressure. When
operating the stepwell cover be sure there are no pets, shoes
or other obstructions in the stepwell area. Do not operate the
stepwell cover while standing in the stepwell area.
The “MAC” air valve is located in the front of the
motorhome, behind the generator door mounted to the
frame. The easiest way to identify the location is have
someone operate the stepwell cover with the generator
door open and listen for the release of air.
The “MAC” air valve has two adjustment screws. The
adjustment screws regulate the air flow to either side of
the air cylinder. Adjusting the screws will affect the speed
in which the air cylinder moves in or out. Clockwise adjust-
ment on the screw will decrease air flow.
Counterclockwise adjustment on the screw will increase
the air flow. For proper stepwell cover adjustment it is rec-
ommended that adjustments be performed by a qualified
service person.
Equipment
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DIPLOMAT
5•134
Tips
STEPWELL COVER
Solenoid Valve.eps
Adjustments
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