Introduction; Oil Pump Service Information - Yanmar 3TNV82A Service Manual

Introduction

INTRODUCTION
This section of the Service Manual describes the procedures necessary to service the 3TNV82A to 4TNV88,
and 4TNV94L/98/106 Trochoid oil pumps.
See Replace Engine Oil and Engine Oil Filter on page 5-27 for engine oil and engine oil filter replacement
procedures.

OIL PUMP SERVICE INFORMATION

Model
3TNV82A, 3TNV84, 3TNV84T,
3TNV88, 4TNV84, 4TNV84T,
4TNV88, 4TNV94L, 4TNV98
4TNV98T
4TNV106 (CL),
4TNV106T (CL)
4TNV106 (VM),
4TNV106T (VM)
Model
3TNV82A, 3TNV84, 3TNV84T,
3TNV88, 4TNV84, 4TNV84T,
4TNV88
4TNV94L, 4TNV98, 4TNV98T
4TNV106, 4TNV106T
TNV DI Service Manual
Engine Oil Pressure - All Models
at Rated Engine rpm
42 - 57 psi
(0.29 - 0.39 MPa;
2.96 - 3.98 kgf/cm
57 - 71 psi
(0.39 - 0.49 MPa;
3.98 - 5.00 kgf/cm
45 - 71 psi
(0.31 - 0.49 MPa;
3.16 - 5.00 kgf/cm
With balancer:
49 - 64 psi
(0.34 - 0.44 MPa;
3.47 - 4.49 kgf/cm
Without balancer:
57 - 71 psi
(0.39 - 0.49 MPa;
3.98 - 5.00 kgf/cm
Outer Rotor Outside Clearance - All Models
Standard
0.0047 - 0.0083 in.
(0.12 - 0.21 mm)
0.0039 - 0.0061 in.
(0.100 - 0.155 mm)
0.0039 - 0.0065 in.
(0.100 - 0.165 mm)
LUBRICATION SYSTEM
at Low Idle Speed
2 )
2 )
2
)
8.8 psi (0.06 MPa; 0.6 kfg/cm
2
)
2
)
Limit
0.0118 in.
(0.30 mm)
0.0098 in.
(0.25 mm)
0.0098 in.
(0.25 mm)
All Models
2 ) or greater
Reference
Page
Check Outer
Rotor Outside
Clearance on
page 9-14
Check Outer
Rotor Outside
Clearance on
page 9-14
9-5