Passenger Stairway PS-813B/E Boeing | 30
SECTION 2 - SERVICING PASSENGER STAIRWAY
2.3.1 | Hydraulic Pressure Relief Valve
Adjustment
The hydraulic pressure relief valve is adjustable and is located on the
hydraulic control valve (Figure 2.3.1). Adjust as follows:
1. Extend the stairway to the maximum.
2. Adjust relief so the A-frame will just lift (clockwise to increase
pressure).
3. Turn the relief adjustment 1/4 turn clockwise and lock.
2.3.2 | Flow Control Valve Adjustment
To adjust the A-frame or stairway flow control, proceed as follows; (two
people make the task easier).
1. Raise A-frame (or stairway).
2.
Adjust flow control 1/8 turn (clockwise for slower).
3. Operate the directional valve to lower the A-frame (or stairway).
4. Continue to adjust until cylinders retract at the desired rate.
2.3.3 | Stairway Clearance Adjustment
Bolts
Bolts on the sides of the stairway (Figure 2.3.3) may be used to increase
or decrease the clearance between the upper and lower stairs by
tightening or loosening plastic bearing surfaces between the stairs
sections.
This adjustment is necessary only if there is excessive lateral (side-to-
side) motion of the upper stairway when it is being raised and lowered.
1. To decrease clearance between the stair sections, tighten the
bearing surfaces by turning the bolts inward a short distance. It
is recommended that all bolts on one side be tightened an equal
distance. Adjust bolts on the opposite side only if there is still too
much lateral travel.
2. To increase clearance, rotate the bolts outward a short distance.
2.3.4 | Gasoline Engine Adjustment
For adjustment information on the engine carburetor and controls. See
Owner’s Manual
2.3 ADJUSTMENTS
Содержание PS-813B/E
Страница 6: ...Passenger Stairway PS 813B E Boeing 6 SECTION SECTION PAGE DATE REVISIONS PAGE...
Страница 38: ...Passenger Stairway PS 813B E Boeing 38 FIG 1 1 PASSENGER STAIRWAY MODEL PS 813B E...
Страница 39: ...Passenger Stairway PS 813B E Boeing 39 FIG 1 1 2 1 A FRAME...
Страница 40: ...Passenger Stairway PS 813B E Boeing 40 FIG 1 1 3 HYDRAULIC SCHEMATIC...
Страница 41: ...Passenger Stairway PS 813B E Boeing 41 FIG 1 1 3 1 PRIMARY CONTROL STATION...
Страница 42: ...Passenger Stairway PS 813B E Boeing 42 FIG 1 1 4 ELECTRICAL SCHEMATIC...
Страница 43: ...Passenger Stairway PS 813B E Boeing 43 FIGURE 1 2 1 2 PRIMARY CONTROL STATION...
Страница 44: ...Passenger Stairway PS 813B E Boeing 44 FIGURE 2 1 7 1 LUBRICATION POINTS...
Страница 45: ...Passenger Stairway PS 813B E Boeing 45 FIGURE 2 1 7 2 LUBRICATION POINTS...
Страница 46: ...Passenger Stairway PS 813B E Boeing 46 FIGURE 2 1 7 3 LUBRICATION POINTS...
Страница 47: ...Passenger Stairway PS 813B E Boeing 47 FIGURE 2 2 1 1 HYDRAULIC SCHEMATIC...
Страница 48: ...Passenger Stairway PS 813B E Boeing 48 FIGURE 2 2 1 2 ELECTRICAL SCHEMATIC...
Страница 49: ...Passenger Stairway PS 813B E Boeing 49 FIGURE 2 3 1 PRIMARY CONTROL VALVE...
Страница 50: ...Passenger Stairway PS 813B E Boeing 50 FIGURE 2 3 3 ADJUSTMENT BOLTS...
Страница 51: ...Passenger Stairway PS 813B E Boeing 51 FIGURE 4 3 1 PASSENGER STAIRWAY MODEL PS 813B E...
Страница 54: ...Passenger Stairway PS 813B E Boeing 54 FIGURE 4 3 2 STAIRWAY CHASSIS ASSEMBLY...
Страница 56: ...Passenger Stairway PS 813B E Boeing 56 FIGURE 4 3 3 UPPER STAIRS AND PLATFORM...
Страница 58: ...Passenger Stairway PS 813B E Boeing 58 FIGURE 4 3 4 LOWER STAIRS ASSEMBLY...
Страница 60: ...Passenger Stairway PS 813B E Boeing 60 FIGURE 4 3 5 STAIRWAY RATCHET ASSEMBLY...
Страница 62: ...Passenger Stairway PS 813B E Boeing 62 FIGURE 4 3 6 A FRAME ASSEMBLY...
Страница 64: ...Passenger Stairway PS 813B E Boeing 64 FIGURE 4 3 7 HYDRAULIC SYSTEM...
Страница 67: ...Passenger Stairway PS 813B E Boeing 67 FIGURE 4 3 9 ELECTRICAL SCHEMATIC...
Страница 69: ...Passenger Stairway PS 813B E Boeing 69 FIGURE 4 3 10 CONTROL STATION...
