Komatsu D31EX-21, Operation & Maintenance Manual, Page: 90 / 256

EXPLANATION OF COMPONENTS
OPERATION
3-38
BLADE CONTROL LEVER
This lever (5) is used to lift, tilt or angle the blade.
After the engine is stopped, the blade will not move even if the blade control lever is operated.
LIFTING CONTROL
(a) RAISE:
(b) HOLD: Blade is stopped and held in this position.
(c) LOWER:
(d) FLOAT: Blade will move freely according to external force.
REMARK
When released from FLOAT position, this lever will not return to
HOLD position, so it must be moved back by hand.
Before starting the engine, check that the blade control lever is
at the HOLD position.
In cold weather, it will take time for the lever to be held at the
HOLD position, so hold the lever by hand at the HOLD position
for at least 1 second.
TILTING CONTROL
(b) HOLD: Blade is stopped and held in this position.
(e) LEFT TILT
(f) RIGHT TILT
Raise
Lower
Right tilt
Left tilt
Machine
model
Amount of tilt
mm
Narrow blade Wide blade
D31EX - 330
D31PX 395 435
D37EX - 375
D37PX 395 445
D39EX - 395
D39PX 430 480