Idler Gear Shaft And Bushing; Timing Gear Backlash; Crankshaft And Pistons Specifications; Crankshaft - Yanmar 2TNV70 Service Manual

Crankshaft and Pistons Specifications

Idler Gear Shaft and Bushing

Inspection Item
Shaft Outside Diameter
Bushing Inside Diameter
Oil Clearance

Timing Gear Backlash

Inspection Item
Crank Gear, Cam Gear, Idler Gear, Fuel Injection Pump Gear
and PTO Gear
CRANKSHAFT AND PISTONS SPECIFICATIONS

Crankshaft

Note: Check appropriate parts catalog for undersized replacement main bearing inserts.
Inspection Item
Bend (1/2 the dial gauge reading)
Roundness
Connecting Rod
Journals
TNV IDI Service Manual
2TNV70
3TNV70
Journal Outside
Diameter
3TNV76
2TNV70
3TNV70
Bearing Inside
Diameter
3TNV76
2TNV70
Bearing Insert
3TNV70
Thickness
3TNV76
2TNV70
3TNV70
Oil Clearance
3TNV76
Standard
1.4547 - 1.4557 in.
(36.950 - 36.975 mm)
1.4567 - 1.4577 in.
(37.000 - 37.025 mm)
0.0010 - 0.0030 in.
(0.025 - 0.075 mm)
Standard
0.0024 - 0.0047 in.
(0.06 - 0.12 mm)
Standard
-
0.0004 in.(0.01 mm)
or less
1.4942 - 1.4946 in.
(37.952 - 37.962 mm)
1.6517 - 1.6520 in.
(41.952 - 41.962 mm)
1.4954 - 1.4965 in.
(37.982 - 38.010 mm)
1.6528 - 1.6536 in.
(41.982 - 42.002 mm)
0.0592 - 0.0594 in.
(1.503 - 1.509 mm)
0.0008 - 0.0023 in.
(0.020 - 0.058 mm)
0.0008 - 0.0020 in.
(0.020 - 0.050 mm)
ENGINE
Reference
Limit
Page
1.4528 in.
See
(36.900 mm)
Inspection of
1.4596 in.
Idler Gear
(37.075 mm)
and Shaft on
0.0069 in.
page 6-51
(0.175 mm)
Reference
Limit
Page
See
Checking
0.0055 in.
Timing Gear
(0.14 mm)
Backlash on
page 6-36
Reference
Limit
Page
0.0008 in.
(0.02 mm)
0.0008 in.
(0.02 mm)
1.4725 in.
(37.402 mm)
1.6497 in.
(41.902 mm)
See
- Inspection of
Crankshaft
on page 6-49
-
-
0.0043 in.
(0.110 mm)
0.0043 in.
(0.110 mm)
6-7