TM 5-2420-232-10
0004
DIFFERENTIAL LOCKS
0004
As an aid to traction on slippery surfaces, the machine is fitted with differential locks. When the ignition is ON and the engine
is running, the differential locks can be engaged. The differential lock operating switch (Figure 63, Item 1) is located in the
switch panel on the left-hand side of the dash. When the locks are engaged, the switch icon is illuminated, together with an
icon on the EMS unit. The EMS unit will also display a text message "DIFFS LOCKED." The differential locks are speed sen-
sitive, and can be engaged while the machine is moving, providing the road speed is below 10 mph (16 kph). Once the
machine road speed increases above 10 mph (16 kph), the differential locks will be automatically disengaged.
435-A0274
Figure 63. Differential Locks
04
CAUTION
Do not use differential locks when traveling on hard surfaces. Failure to comply may result in
damage to equipment.
Turn ON Differential Lock Function
0004
Press the bottom of switch (Figure 63, Item 1) in. Switch will illuminate (as will the differential lock icon on the EMS unit) to
confirm differential locks are engaged. EMS unit will display the text message "DIFFS LOCKED" for 3 seconds, after which
time the message will be deleted.
Turn OFF Differential Lock Function
0004
Press top of switch (Figure 63, Item 1) in. Switch illumination will go out, as will any corresponding icon on the EMS unit.
EMS unit will display the text message "DIFFS UNLOCKED" for 3 seconds, after which time the message will be deleted.
Differential locks are now disengaged.
Automatic Speed Disengagement
0004
If machine road speed increases above 10 mph (16 kph), the electronic control system will automatically disengage the differ-
ential locks. EMS unit will display the text message "DIFFS UNLOCKED" for 3 seconds, after which the display will be
extinguished. The operating switch illumination will be extinguished along with the EMS icon. Differential locks are now dis-
engaged.
Change 1
