Passenger Stairway PS-813B/E Boeing | 18
SECTION 1 - PROCEDURES, SPECS & CAPABILITIES
powered hydraulic pump is disabled. The hand pump is located near the
hydraulic control valve and is equipped with an extension handle. It is
operated by moving the handle back and forth repeatedly.
1.2.4.2 | Raising Stairway or A-frame Using Hand Pump
1. Hold STAIRWAY or A-FRAME control valve handle in UP position.
Pump hand pump until stairway or A-frame is at desired height.
2. Move control handle to DOWN position. Pump hand pump until
mechanical ratchet lock engages.
1.2.4.3 | Lowering Stairway or A-frame Using Hand Pump
1. Raise stairway or A-frame approximately 1 in. to clear ratchet.
2. Raise ratchet release handle.
3. Move control valve handle to DOWN position. Pump hand pump
until stairway or A-frame is at desired height.
4. Lock stairway or A-frame in position by releasing ratchet handle.
1.2.4.4 | Operating stabilizers Using Hand Pump
1. To raise stabilizers, hold STABILIZER control valve handle in UP
position. Pump hand pump until stabilizers are fully raised.
2. To lower stabilizers, hold STABILIZER control valve handle in DOWN
position. Pump hand pump until stabilizers are fully lowered.
NOTE:
The battery charger functions
best when set at the 15 Amp.
Deep Cycle/12 Volt/ Automatic
positions.
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