Service Standards; Engine Tuning - Yanmar 2TNV70 Service Manual

11. SERVICE STANDARDS

11.1 Engine Tuning

No. Inspection item
Gap at intake/exhaust valve heads
1
Between alternator
and crank pulley
(Direction A)
V-belt tension Between alternator
2 mm and radiator fan
at 98N (10kgf) (Direction S)
Between radiator
fan and crank pulley
(Direction C)
Fuel injection pressure
3
Fuel injection timing FID
4
Compression pressure
5 (at 250 min
MPa(kgf/cm
Cooling water Capacity
6 (Only engine body)
Lube oil capacity
7 (oil pan)
Lube oil pressure
8
Oil pressure switch operating pressure
9
10 Thermostat
Thermo switch actuating temperature
11
*Lube oil capacity may differ from the above depending on an engine installed on a machine unit.
Used part
New part
Used part
New part
Used part
New part
MPa (kgf/cm
degrees (bTDC)
2/3TNV70
-1
)
2
) 3TNV76
2TNV70
(Liter) 3TNV70/76
Model
2TNV70(VM)
3TNV70(VH/VM)
3TNV70(CH)
(Liter)
3TNV76(VM/VH)
3TNV76(CH)
MPa (kgf/cm
MPa (kgf/cm
(deg.C)
Standard
0.15 0.25
mm
10 14
8 12
7 10
5 8
9 13
7 11
11.8 12.8
2
) (120 130)
Refer to 2.2.7(4)
in chapter 2.
3.24(33) 0.1(1)
3.43(35) 0.1(1)
0.6
0.9
Total Effective
1.7 0.7
2.8 1.3
3.8 1.7
3.5 1.6
4.4 2.1
at rated speed
2
)
0.29(3.0) 0.44(4.5)
0.05±0.01
2
)
(0.5±0.1)
valve opening
temperature
deg. C
69.5 72.5
107 113
113
11. Service Standards
Reference
Limit
page
- 2.2.6(3)
-
-
-
2.2.2.(2)
-
-
-
- 2.2.6.(4)
- 2.2.7.(4)
2.55(26) 0.1(1)
3.3
2.75(28) 0.1(1)
-
2.2.1.(4)
-
-
-
2.2.1.(3)
-
-
-
at low idle
-
speed
0.06(0.6) or
-
above
- -
Full opening lift
(mm)
(temperature) 2.7
8 or above
(85 deg.C)
- 2.4(2)