Measuring And Adjusting Work Equipment Control Lever - Komatsu WA250-6 Shop Manual

SEN03837-01
Measuring and adjusting work
equipment control lever
Necessary tools
Symbol Part No.
1 79A-264-0021
W
Commercially
2
available
k
Install the frame lock bar to the frame.
a Measuring condition
Engine coolant temperature: Operating range
q
of engine coolant thermometer
Hydraulic oil temperature: 45 – 55°C
q
Engine speed: Low idle
q
Measuring operating effort of work equipment
control lever
Install tool W1 to the work equipment control lever
and secure it in position.
a Install tool W1 to the center of the knob.
a Operate the control lever at the same speed as
for normal operations, and measure the mini-
mum value for the effort needed to operate the
knob.
30
30-120
1
Part Name
Push-pull scale
Scale
120 Testing and adjusting, Part 2

Measuring and adjusting work equipment control lever

Measuring travel of work equipment control
lever
Measure the travel at each position when operating
the work equipment control lever.
a Mark the lever knob and use a scale W2 to
measure.
a If the stroke is not within the standard value,
check for play in the work equipment PPC
valve.
WA250, 250PZ-6