PREVOST X3-45 COMMUTER User Manual

SECTION 18: BODY
38
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
• Troubleshooting
SYMPTOMS PROBABLE CAUSES REMEDY
DOOR WILL NOT OPEN FROM
EXTERIOR SWITCH.
Manual door locks engaged.
Release manual door locks.
Upper and lower solenoid locks
do not disengage.
Check voltage at solenoid locks when door is
open. If the voltage is 24 volts then replace
solenoid #641217. Else, check circuit power.
Relay module do not receive
current.
Reset breaker "ON" or check batteries power
supply.
Opening solenoid door does not
receive current.
Check voltage at opening solenoid door. If the
voltage is 24 volts then replace i
t. Else replace
control relay.
Switch malfunction.
Replace switch.
DOOR WILL NOT CLOSE
FROM EXTERIOR SWITCH.
Switch malfunction.
Replace switch.
Solenoid failure.
Check voltage at solenoid. If the voltage is 24
volts then replace solenoid. Else replace
control relay.
DOOR WILL NOT OPEN FROM
INTERIOR SWITCH.
Manual door locks engaged.
Release manual door locks (open position)
from vehicle exterior.
Upper and lower solenoid locks
do not disengage.
Check voltage at solenoid locks when door is
open. If
the voltage is 24 volts then replace
solenoid #641217. Else, check circuit power
and replace control relay.
Module relay does not receive
electric current.
Reset breaker "ON" or check batteries power
supply.
Door opening solenoid does not
receive current.
Check voltage at door opening solenoid. If the
voltage is 24 volts then replace it. Else replace
control relay.
Switch malfunction.
Replace switch.
Upper lock stays engaged
Lubricate upper lock assembly. Check wear
and replace parts if necessary.
DOOR WILL NOT CLOSE
FROM INTERIOR SWITCH.
Switch malfunction.
Replace switch.
Door closing solenoid does not
receive electric current.
Check voltage at door closing solenoid. If the
voltage is 24 volts then replace it. Else replace
control relay.
DOOR WILL NOT OPEN
AFTER DRAINING AIR FROM
SYSTEM BY EMERGENCY
VALVE(S).
Manual door locks engaged.
Release manual door locks (open position)
from vehicle exterior.
Damper cylinder blocks the door.
Adjust or replace damper cylinder.
The upper lock blocks the door.
Adjust upper lock. Lubricate upper latch bolt.
Adjust upper latch height.
DOOR LOCKS STAY
ENGAGED WHEN DOOR IS
OPEN.
Power supply is cut at solenoid.
Place switch in open position.
Lock solenoid does not
disengage.
Check voltage at solenoid lock when door is
OPEN. If the voltage is 24 volts then replace
solenoid #641217. Else, check circuit power
and replace control relay.
DOOR LOCKS DO NOT LOCK
WHEN DOOR IS CLOSED.
Emergency valve is open.
Close emergency valve.
Lock solenoid stays electrified.
Check latch bolt ground on door frame. If
needed clean locks for better contact. Check
ground circuit.
Lock solenoid works in reverse.
Reverse air hoses at solenoid locks.
Relay does not function.
Replace relay.

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in