Yanmar 3YM30 Sevice Manual page 152

6. Fuel injection equipment
3YM20
(1) Service data for 3YM20
Part code (Back No.)
Adjustment SPEC
Item Fuel valve (Valve pressure)
Nozzle type (ID mark)
Fuel injection pipe
Injection Starting
adjustment
Rated load
Torque rise
Hi-idle
Idle
Plunger stroke
Plunger diameter
Retraction volume of delivery valve
Pre-stroke
Top clearance
Governor spring
Note : The value in parentheses is a reference value.
-
-
-
-
mm
Pump speed
-1
min
N
D
Average
injection 3
mm /st
volume Q
D
Pump speed
-1
min
N
A
Injection
3
mm /st
volume Q
A
Variation %
Pump speed
-1
min
N
C
Injection
3
mm /st
volume Q
C
Variation %
Pump speed
-1
min
N
B
Injection
3
mm /st
volume Q
B
Pump speed
-1
min
N
E
Injection
3
mm /st
volume Q
E
mm
mm
mm
mm
mm
Spring N/cm
constant (kgf/cm)
Free length mm
728890-51300 (TMM1)
ENGINE SPEC
C (120)
NP-DN0PDN159
Ø 2 x 600
200
30± 5
1800
17.4 ± 0.5
± 3
1300
19.6 ± 0.5
± 5
1945
(6)
425
(5)
137
SERVICE STD
(170)
DN-12SD12
Ø2 x 600
-
-
-
-
-
-
-
-
-
-
-
-
7.0
Ø 6
23.5
2.5
1.0
5.54 (0.565)
42