Yanmar 4TNV98 - Engine Service Standards

GENERAL SERVICE INFORMATION
TNV DI Service Manual
4-45
Engine Service Standards
ENGINE SERVICE STANDARDS
Inspection Item Standard Limit
Reference
page
Intake / Exhaust Valve Clearance
All models
except
4TNV106 and
4TNV106T
0.006 - 0.010 in.
(0.15 - 0.25 mm)
-
See Measuring
and Adjusting
Valve Clearance
on page 6-66
4TNV106 and
4TNV106T
0.010 - 0.014 in.
(0.25 - 0.35 mm)
-
Fuel Injection
Timing
See Checking and Adjusting Fuel Injection Timing on page 7-30.
Fuel Injection
Pressure
See Test and Adjustment Specifications on page 7-12.
Compression
Pressure at
250 rpm
(250 min¯¹)
3TNV82A
443 - 473 psi
(3.06 - 3.26 MPa;
30 - 32 kgf / cm²)
340 - 370 psi
(2.35 - 3.55 MPa;
24 - 26 kgf / cm²)
See
Troubleshooting
By Measuring
Compression
Pressure on
page 15-219
3TNV84, 4TNV84
455 - 485 psi
(3.14 - 3.34 MPa;
32 - 34 kgf / cm²)
355 - 385 psi
(2.45 - 2.65 MPa;
25 - 27 kgf / cm²)
3TNV84T, 4TNV84T
411 - 441 psi
(2.84 - 3.04 MPa;
29 - 31 kgf / cm)
340 - 370 psi
(2.35 - 2.55 MPa;
24 - 26 kgf / cm²)
3TNV88, 4TNV88, 4TNV94L,
4TNV98, 4TNV98T, 4TNV106,
4TNV106T
483 - 513 psi
(3.33 - 3.53 MPa;
34 - 36 kgf / cm²)
384 - 414 psi
(2.65 - 2.85 MPa;
27 - 29 kgf / cm²)
Deviation Between Cylinders All Models
29 - 43 psi
(0.2 - 0.3 MPa;
2 - 3 kgf/cm²)
--
Oil Pressure Switch Operating Pressure
5.8 - 8.8 psi
(0.04 - 0.06 MPa;
0.4 - 0.6 kgf / cm²)
--
Thermostat
Valve Opening
Temperature
Full Opening Lift
Temperature
See Thermostat
on page 8-11
All Models
157°F - 163°F
(70°C - 73°C)
0.32 in (8 mm) or
above
185°F (85°C)
All Models
Option
176°F - 183°F
(80°C - 84°C)
0.39 in (10 mm) or
above
203°F (95°C)
Coolant Temperature Switch
225°F - 235°F
(107°C - 113°C)
-
See
Te
mperature
Switch on
page 8-10
TNV_DI_SM_A4.book 45 ページ ２００７年１２月６日 木曜日 午前９時２３分