Stabil-trak, Hydraulic circuit operation and troubleshooting – SkyTrak 6036 Service Manual User Manual
Page 253
10-25
6036, 6042, 8042, 10042, 10054
Stabil-TRAK™
System and Boom Interlock System
10.11 STABIL-TRAK™
HYDRAULIC
CIRCUIT OPERATION AND
TROUBLESHOOTING
The function of the Stabil-TRAK™
system varies under
different operating conditions. The basic modes include
the FREE PIVOT MODE, SLOW PIVOT MODE and
LOCKED MODE.
The hydraulic operation and troubleshooting information
for each of these modes will be described on the
following pages.
Troubleshooting Symptom Chart
Symptom
Conditions
Reference
With the boom below 40°, when
leveling the frame to right, left front
tire comes off the ground.
Ignition ON, engine running
Boom angle is below 40°
Travel select lever is in (F) FORWARD or
(R) REVERSE
Park brake OFF
Service brake DISENGAGED
Refer to Section 10.11.2, “Hydraulic Circuit
Operation - FREE PIVOT Mode, Rod Oil
Out,” and Section 10.11.3, “Hydraulic
Troubleshooting - FREE PIVOT Mode,
Rod Oil Out.”
With the boom below 40°, when
leveling the frame to left, right front
tire comes off the ground.
Ignition ON, engine running
Boom angle is below 40°
Travel select lever is in (F) FORWARD or
(R) REVERSE
Park brake OFF
Service brake DISENGAGED
Refer to Section 10.11.4, “Hydraulic Circuit
Operation - FREE PIVOT Mode, Base Oil
Out,” and Section 10.11.5, “Hydraulic
Troubleshooting - FREE PIVOT Mode,
Base Oil Out.”
While traveling, ride feels spongy
(riding on 3 wheels).
Ignition ON, engine running
Boom angle is above 40°
Travel select lever is in (F) FORWARD or
(R) REVERSE
Park brake OFF
Service brake DISENGAGED
Refer to Section 10.11.6, “Hydraulic
Circuit Operation - SLOW PIVOT Mode,
Rod Oil Out,” and Section 10.11.7,
“Hydraulic Troubleshooting - SLOW
PIVOT Mode, Rod Oil Out.”
Stabil-TRAK™
light in instrument
cluster is not ON.
Ignition ON, engine running
Boom angle is above 40°
Travel select lever is in (N) NEUTRAL, or
Park brake ON or Service brake ENGAGED
Refer to Section 10.11.10, “Hydraulic
Circuit Operation - LOCKED MODE,”
and Section 10.11.12, “Hydraulic
Troubleshooting - LOCKED MODE, Will
Not Frame Level Right,” or Section
10.11.14, “Hydraulic Troubleshooting—
LOCKED MODE, Will Not Frame
Level Left.”
With the boom above 40°, when
leveling the frame to right, left front
tire comes off the ground.
Ignition ON, engine running
Boom angle is above 40°
Travel select lever is in (N) NEUTRAL, or
Park brake ON or Service brake ENGAGED
Refer to Section 10.11.11, “Hydraulic
Circuit Operation - LOCKED MODE,
Frame Level Right,” and Section
10.11.12, “Hydraulic Troubleshooting -
LOCKED MODE, Will Not Frame
Level Right.”
With the boom above 40°, when
leveling the frame to left, right front
tire comes off the ground.
Ignition ON, engine running
Boom angle is above 40°
Travel select lever is in (N) NEUTRAL, or Park
brake ON or Service brake ENGAGED
Refer to Section 10.11.13, “Hydraulic
Circuit Operation - LOCKED MODE,
Frame Level Left,” and Section 10.11.14,
“Hydraulic Troubleshooting - LOCKED
MODE, Will Not Frame Level Left.”