Yanmar ViO12-2A, Service Manual

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3. SERVICING STANDARDS
3-4-1
3-4 Controls
Applicable model ViO1
2 -2A
Item Measuring conditions Unit Standard Allowable limit
Controls
Operating force
Right control lever
(Boom) • Engine : stopped
• Hydraulic oil temp. : 50 to 60 °C
• Lever operating force : Measure the force by
hanging the spring scale on the lever grip.
• Pedal operating force : Measure the force by
applying load as shown below.
N
9
,
8 12
,7
Right control lever
(Bucket)
Left control lever
(Arm & Swing)
Blade lever 19
,
7 24
,
5
Travel levers 14
,
7 19
,
6
Track gauge change lever 24
,5
34
,
3
Boom swing pedal 29
,
4 39
,
2
P.T.O. pedal 29
,
4 39
,
2
Play of control lever & pedal
Right control lever
(Front & rear / left & right) • Engine : stopped
• Hydraulic oil temp. : 50 to 60 °C
• Play of each control lever and pedal :
Measure the total play (front & rear and left &
right) at the lever grip end or the pedal end.
mm
20

Left control lever
(Front & rear / left & right)
20

Blade lever 10

Travel levers
1
0

Boom swing pedal 5

P.T.O. pedal 5

Track gauge change lever 5

Control valve
Spool stroke
Boom
mm 6

Bucket
Arm
Swing
Right travel
mm
6
Left travel
Blade
Boom swing
P.T.O.
Track gauge change

Spring scale
Pull
Press
Play
Play
Stroke
A B
Stroke
A B