•
ground illumination in vicinity of bottom step
•
ground illumination on each main stabilizer
•
top platform light in the platform end skin of the adjustable section.
Stair lighting is controlled by a switch located on the dash in the truck cab.
Stabilizer illumination lights are controlled by a single proximity switch actuated
by the left forward stabilizer.
Stabilizer illumination lights
(one at each forward stabilizer) are controlled by a
single proximity switch actuated by the left forward stabilizer.
1.4.7
Stabilizers
Two heavy-duty hydraulically actuated stabilizers are attached to the frame stair
support immediately behind the cab. Smaller extendible stabilizers are mounted
under the stairs at the rear. Both sets of stabilizers are actuated by double-acting
hydraulic cylinders and are controlled by a single lever on the cab control
console.
NOTICE!
When the “STABILIZERS NOT RETRACTED” indicator is ON, the
stabilizers are not fully retracted and the stair can not be driven.
If the sta bi liz ers are in the down po si tion the engine will shut down if move ment
is at tempted.
1.4.8
Main Support Frame
The main supporting frame is constructed of welded steel members and is
fastened to the truck chassis. This frame extends from behind the cab to the rear
of the chassis.
1.4.9
Forward Support Frame (A-Frame)
The forward support frame is mounted vertically on the main support frame and
supports the upper end of the main stair section. The frame is a welded tubular
structure. The upper section is a telescoping structure capable of extending the
height of the support frame. Extension and lowering is provided by a hydraulic
cylinder. A solenoid-actuated lock lever fitted into a ratchet rack provides positive
locking of the telescoping structure.
1.4.10 Stair Section
The stair section is composed of a main section (stationary unit) and an
adjustable section (telescoping unit). Both are similar in construction and are
made of riveted aluminum alloy sheet on welded steel frames. On standard
CHAPTER 1 GENERAL INFORMATION & OPERATION INSTRUCTIONS
SEPTEMBER 30, 2008
1 DESCRIPTION
PAGE 7
Truck Mounted Passenger Stair TMPS-200
Manual No. 307559
