Engine Service Standards; Troubleshooting - Yanmar 3TNV82A Service Manual

Engine Service Standards

ENGINE SERVICE STANDARDS
Inspection Item
Intake / Exhaust Valve Clearance
Fuel Injection
Timing
Fuel Injection
Pressure
3TNV82A
3TNV84, 4TNV84
Compression
Pressure at
250 rpm
(250 min¯¹)
3TNV84T, 4TNV84T
3TNV88, 4TNV88, 4TNV94L,
4TNV98, 4TNV98T, 4TNV106,
4TNV106T
Deviation Between Cylinders
Oil Pressure Switch Operating Pressure
All Models
Thermostat
All Models
Option
Coolant Temperature Switch
TNV DI Service Manual
Standard
All models
except 0.006 - 0.010 in.
4TNV106 and (0.15 - 0.25 mm)
4TNV106T
4TNV106 and 0.010 - 0.014 in.
4TNV106T (0.25 - 0.35 mm)
See Checking and Adjusting Fuel Injection Timing on page 7-26.
See Test and Adjustment Specifications on page 7-8.
443 - 473 psi
(3.06 - 3.26 MPa;
30 - 32 kgf / cm²)
455 - 485 psi
(3.14 - 3.34 MPa;
32 - 34 kgf / cm²)
411 - 441 psi
(2.84 - 3.04 MPa;
29 - 31 kgf / cm)
483 - 513 psi
(3.33 - 3.53 MPa;
34 - 36 kgf / cm²)
29 - 43 psi
All Models (0.2 - 0.3 MPa;
2 - 3 kgf/cm²)
5.8 - 8.8 psi
(0.04 - 0.06 MPa;
0.4 - 0.6 kgf / cm²)
Valve Opening
Temperature
157°F - 163°F
(70°C - 73°C)
176°F - 183°F
(80°C - 84°C)
225°F - 235°F
(107°C - 113°C)
GENERAL SERVICE INFORMATION
Limit
-
-
340 - 370 psi
(2.35 - 3.55 MPa;
24 - 26 kgf / cm²)
355 - 385 psi
(2.45 - 2.65 MPa;
25 - 27 kgf / cm²)
340 - 370 psi
(2.35 - 2.55 MPa;
24 - 26 kgf / cm²)
384 - 414 psi
(2.65 - 2.85 MPa;
27 - 29 kgf / cm²)
-
-
Full Opening Lift
Temperature
0.32 in (8 mm) or
above
185°F (85°C)
0.39 in (10 mm) or
above
203°F (95°C)
-
Reference
page
See Measuring
and Adjusting
Valve Clearance
on page 6-60
See

Troubleshooting

By Measuring
Compression
Pressure on
page 14-4
-
-
See Thermostat
on page 8-10
See
Temperature
Switch on
page 8-10
4-45