Passenger Stairway PS-813B/E Boeing | 27
SECTION 2 - SERVICING PASSENGER STAIRWAY
Table 2.2.1 | Troubleshooting
TROUBLE
PROBABLE CAUSE
REMEDY
Mechanical
Unit will not move
easily
Wheel bearing frozen
Repack or replace.
Unit will not turn
Caster pivot needs
lubrication
Grease.
Caster pivot frozen
Replace caster.
A-frame will not
extend or retract
A-frame tubes binding
Check for foreign
objects or bent tubes.
Engine will not
crank
Battery discharged
Check batteries and
recharge if needed.
Electrical problem
See electrical
troubleshooting.
Engine cranks but
will not start
Throttle or choke
requires adjustment
Refer to Engine
owner’s manual
Other engine
problems
Various
Refer to Engine
owner’s manual
Hydraulic System (see Figure 2.2.1.1)
Stairway or A-frame
will not raise
Fluid in hydraulic
reservoir low
Fill to proper level
with specified fluid
Leakage in hydraulic lines
or fittings
Inspect lines and
fittings, tighten or
replace as necessary
Pressure relief set too low
Adjust pressure relief
per Section 3
Control valve defect
Repair or replace.
Hydraulic pump problem Repair or replace
Stairway or A-frame
raises too slowly
Low oil level in hydraulic
tank
Add oil
Relief valve set too low
Adjust per Section 3
Internal control valve leak Repair or replace
Internal stairway cylinder
leak
Repair cylinder. See
Figure 4.3.8
Internal A-frame cylinder
leak
Repair cylinder
2.2
TROUBLESHOOTING
Summary of Contents for PS-813B/E
Page 6: ...Passenger Stairway PS 813B E Boeing 6 SECTION SECTION PAGE DATE REVISIONS PAGE...
Page 38: ...Passenger Stairway PS 813B E Boeing 38 FIG 1 1 PASSENGER STAIRWAY MODEL PS 813B E...
Page 39: ...Passenger Stairway PS 813B E Boeing 39 FIG 1 1 2 1 A FRAME...
Page 40: ...Passenger Stairway PS 813B E Boeing 40 FIG 1 1 3 HYDRAULIC SCHEMATIC...
Page 41: ...Passenger Stairway PS 813B E Boeing 41 FIG 1 1 3 1 PRIMARY CONTROL STATION...
Page 42: ...Passenger Stairway PS 813B E Boeing 42 FIG 1 1 4 ELECTRICAL SCHEMATIC...
Page 43: ...Passenger Stairway PS 813B E Boeing 43 FIGURE 1 2 1 2 PRIMARY CONTROL STATION...
Page 44: ...Passenger Stairway PS 813B E Boeing 44 FIGURE 2 1 7 1 LUBRICATION POINTS...
Page 45: ...Passenger Stairway PS 813B E Boeing 45 FIGURE 2 1 7 2 LUBRICATION POINTS...
Page 46: ...Passenger Stairway PS 813B E Boeing 46 FIGURE 2 1 7 3 LUBRICATION POINTS...
Page 47: ...Passenger Stairway PS 813B E Boeing 47 FIGURE 2 2 1 1 HYDRAULIC SCHEMATIC...
Page 48: ...Passenger Stairway PS 813B E Boeing 48 FIGURE 2 2 1 2 ELECTRICAL SCHEMATIC...
Page 49: ...Passenger Stairway PS 813B E Boeing 49 FIGURE 2 3 1 PRIMARY CONTROL VALVE...
Page 50: ...Passenger Stairway PS 813B E Boeing 50 FIGURE 2 3 3 ADJUSTMENT BOLTS...
Page 51: ...Passenger Stairway PS 813B E Boeing 51 FIGURE 4 3 1 PASSENGER STAIRWAY MODEL PS 813B E...
Page 54: ...Passenger Stairway PS 813B E Boeing 54 FIGURE 4 3 2 STAIRWAY CHASSIS ASSEMBLY...
Page 56: ...Passenger Stairway PS 813B E Boeing 56 FIGURE 4 3 3 UPPER STAIRS AND PLATFORM...
Page 58: ...Passenger Stairway PS 813B E Boeing 58 FIGURE 4 3 4 LOWER STAIRS ASSEMBLY...
Page 60: ...Passenger Stairway PS 813B E Boeing 60 FIGURE 4 3 5 STAIRWAY RATCHET ASSEMBLY...
Page 62: ...Passenger Stairway PS 813B E Boeing 62 FIGURE 4 3 6 A FRAME ASSEMBLY...
Page 64: ...Passenger Stairway PS 813B E Boeing 64 FIGURE 4 3 7 HYDRAULIC SYSTEM...
Page 67: ...Passenger Stairway PS 813B E Boeing 67 FIGURE 4 3 9 ELECTRICAL SCHEMATIC...
Page 69: ...Passenger Stairway PS 813B E Boeing 69 FIGURE 4 3 10 CONTROL STATION...
