Sakai 544, Troubleshooting And Diagnostics Information

Page: 14 / 31

544
Will not Drive
Yes, Disengage park brake. No, Inspect Drive Cable. Is cable still connected?
Yes, Test Foot Brake Switch. Is there voltage present at the switch?
No, Re-Install Cable and test.
No, Check Fuse 9 (15a) and wiring and connections
from Fuse and repair as needed or replace blown fuse.
Yes, Test Foot Brake Switch. Is there voltage on both terminals at rest?
No, Check Pump Neutral Relay for voltage on
Blue/Yellow Wire when Park Brake Switch in
“OFF” Position. Is there voltage present?
Yes, Repair or Replace
switch as needed.
Pump Neutral Relay
No, Repair or Replace Park Brake switch as needed.
Yes, Is there power at Park Brake Solenoid
when switch is in “OFF” Position?
No, Test Neutral Relay.
Does power leave
relay to supply Park
Brake Solenoid?
Yes, Use Brake Release valve to
release brakes. Does machine Drive?
No, Inspect Drive Pump and
Repair or Replace as needed.
Yes, Inspect Brake
Solenoid and repair or
replace as needed.
Drive Cable
Park Brake
Solenoid
Two Speed
Front Solenoid
Brake Release
Hand Pump
Brake Switch and Pedal
Neutral
Solenoid
Is the Unloader valve open? Will not drive with valve open
Yes, Close valve to drive.
No, Is the Parking brake engaged?