Push Rod; Rocker Arm And Shaft; Valve Spring; Camshaft And Timing Gear Train Specifications - Yanmar 4TNV98 Service Manual

Push Rod

Inspection Item
Page Push Rod Bend

Rocker Arm and Shaft

Inspection Item
Arm Shaft Hole Diameter
Shaft Outside Diameter
Oil Clearance

Valve Spring

Inspection Item
4TNV98 (4-Valve Head)
Free Length
4TNE98
4TNV98 (4-Valve Head)
Squareness
4TNE98

Camshaft and Timing Gear Train Specifications

Camshaft
Inspection Item
End Play
Bend (1/2 the dial gauge reading)
Cam Lobe Height
4TNV98 & 4TNE98 Diesel Engine
(18.500 - 18.520 mm)
(18.470 - 18.490 mm)
Model
4TNV98
(43.400 - 43.600 mm)
4TNE98
Shaft Outside Diameter / Bearing Inside Diameter
Standard
Less than
0.0012 in. (0.03 mm)
Standard
0.7283 - 0.7291 in.
0.7272 - 0.7280 in.
0.0004 - 0.0020 in.
(0.010 - 0.050 mm)
Standard
1.5630 in.
(39.7 mm)
1.87 in.
(47.5 mm)
-
-
Standard
0.0020 - 0.0079 in.
(0.05 - 0.20 mm)
0 - 0.0008 in.
(0 - 0.02 mm)
1.7087 - 1.7165 in.
1.6707 - 1.6758 in.
(42.435– 42.565 mm)
68
Reference
Limit
Page
See Push
0.0012 in.
Rod Bend
(0.03 mm)
on page 93.
Reference
Limit
Page
0.7311 in.
(18.57 mm)
Inspection of
0.7260 in. Rocker Arm
(18.44 mm) Assembly on
page 93 and
0.0051 in.
(0.13 mm)
Reference
Limit
Page
1.5433 in.
(39.2 mm)
Inspection of
-
Valve
Springs on
0.0551 in.
page 97 and
(1.4 mm)
101.
0.05 in.
(1.2 mm)
Reference
Limit
Page
0.0118 in. Removal of
(0.030 mm) Camshaft on
page 114.
0.0020 in.
(0.05 mm)
1.6988 in. Inspection of
(43.150 mm) Camshaft on
page 125.
1.6608 in.
(42.185 mm)
Section 3. Engine
See
94.
See
See
See