STINAR PS-813B/E - Towing and Positioning the Unit

Passenger Stairway PS-813B/E Boeing | 15
SECTION 1 - PROCEDURES, SPECS & CAPABILITIES
• Move the fuel valve lever to the ON position.
• Move choke lever to CLOSED position if engine is cold. To restart
a warm engine, leave the choke lever in the OPEN position.
• Move engine throttle about 1/3 of the way to the FAST position.
• Operate the starter by moving the engine switch to the START
position.
• If engine cranks but will not re, it may be necessary to adjust
the choke. See Appendix A for illustrations and procedure. If
engine cannot be started using electric starter, it may be started
manually by means of pull starter.
12. After engine starts, move choke to OPEN position as the engine
warms up. Operate engine with choke in OPEN position and throttle
in FAST position.
13. When engine is running smoothly, stairway operations may begin.
14. Shut o engine by moving throttle lever to the SLOW position and
moving engine switch to the OFF position.
15. Turn the fuel valve lever to the OFF position.
1.2.3.3 | Towing and Positioning the Unit
1. Connect tow bar to tow vehicle.
2. Ensure that the stairway is disconnected from 120 VAC electrical power.
3. Ensure that stabilizers are raised.
4. Tow stairway to vicinity of aircraft. Do not tow at speeds over 15 mph.
5. Position unit in line with the aircraft doorway, 20 to 30 ft. from the
aircraft.
6. Start engine following procedures above. Engine powers hydraulic
pump.
7. Raise stairs to proper aircraft service height following procedures
below.
8. Raise A-frame to aircraft door sill height.
9. Push unit forward until rubber bumper makes slight contact with
aircraft.
10. Lower stabilizers as follows:
• Move STABILIZER control valve handle to DOWN position (with
engine running).
• Hold control valve handle in DOWN position until all stabilizers
are fully lowered.
WARNING!
Do not allow any part of the
unit to come into contact with
electrically charged wires. STAY
OFF THE STAIRS AND PLAT-
FORM while towing or operat-
ing the stairway.
CAUTION!
Make sure there is hydraulic oil
in the hydraulic oil reservoir be-
fore starting the engine. This is
necessary because the hydrau-
lic pump operates whenever the
engine is running.