Volvo G720B - Differential Lock

Operating instructions
Differential lock 97
Differential lock
The lock/unlock differential control switch (A) is mounted in the
pedestal on the upper right-hand side. An amber lamp (B) illumi-
nates when the lock is engaged.
n Put the control switch in the ‘UNLOCK’ position when differen-
tial action is required. This will reduce the turning radius and
decrease tire scuffing when operating on paved surfaces. The
indicator lamp will de-energize.
n Put the control switch in the ‘LOCK’ position for normal grad-
ing operations when maximum traction is required. The indi-
cator lamp will energize.
n The DIFF UNLOCK warning light “OFF” means the lock/un-
lock mechanism is DISENGAGED.
n Do not engage the final drive lock/unlock mechanism while
the tandem wheels are spinning, under load, or the machine
is turning.
WARNING!
Lock or unlock the differential ONLY when driving at slow
speeds, in a straight line or if the grader is stopped. Do
not lock or unlock the differential while making a turn or
when the tandem wheels on one side are spinning.
Damage to the differential could result.
A Differential lock/unlock switch
B Differential lock indicator lamp (amber)
C Differential lock operating instructions decal
(on windshield)