Service Standards - Yanmar 4LHA-HTP Operation Manual

Chapter 2 Basic Engine

3. Service Standards

3. Service Standards
Specified lube oil press, at 3300rpm
(measuring in the main oil gallery)
Intake
Valve cleance Valve cleance
Exhaust
Fuel iniection timin g (b.T.D.C. deg.)
Fuel injection press. (MPa(kgf/cm
Tightening torque of bolts and nuts
Cylinder head bolt
Connecting rod bolt
Main bearing cap bolt
Crank shaft V-pulley clamp bolt
Flywheel clamp bolt
Fuel injection nozzle clamp nut
Fuel injection driving gear, Fuel injection driving gear,
clamp nut clamp nut
• For general
I'—[NOTICE]
• Apply the following tightening torque to bolts having " 7 " on the head.
(JIS strength classification : 7 T )
O T i g h t e n bolts with no " 7 " mark to 6 0 % tightening torque.
O If the parts to be tightened are made from aluminum alloy, tighten the bolts to
80% tightening torque.
Bolt dia. x pitch mm
Tightening torque
N m
( K g {
(Note) 80% for Al material of installation side
Name
PT plug PT plug PT plug PT plug
Ball joint bolt Ball joint bolt Ball joint bolt Ball joint bolt
4LHA-STE/-STZE
4LHA-STP/-STZP
0.1
(mm)
0.5
(mm)
13
26.5-27.5(270-280)
)]
2
Bolt & Nut size Bolt & Nut size
M13X1.5
M11X1.0
M14X1.5
M14X1.5
M14X1.5
M6X1.0
M14X1.5
M18X1.5
* : Apply engine oil to the thread and seat.
M 8 X 1 . 2 5
M 6 X 1 . 0
2 5 . 5 ± 2 . 9
10.8+1.0
(2.6±0.3)
(1.1±0.1)
m )
Thread diameter
1/8
1/4
3/8
1/2
M8
M12
M14
M16
4LHA-DTE/-DTZE
4LHA-DTP/-DTZP
0.42±0.05MPa(4.3±0.5kgf/cm
0.1
0.14
12
2 3 . 5 - 2 4 . 5 ( 2 4 0 - 2 5 0 )
Tightening Torque
4LHA-STE,-DTE,HTE
* 1 s t : 108(11)
2 n d : 167(17)
3rd: 186(19)
* 1 1 3 - 1 2 3 ( 1 1 . 5 - 1 2 . 5 )
* 1 8 6 - 2 0 6 ( 1 9 - 2 1 )
* 1 0 8 - 1 2 7 ( 1 1 - 1 3 )
* 186-206(19—21)
5 . 9 - 6 . 9 (0.6-0.7)
* 59-69 ( 6 - 7 )
* 118-137(12-14)
M 1 2 X 1 . 7 5
M 1 0 X 1 . 5
8 8 . 3 ± 9 . 8
4 9 . 0 ± 4 . 9
(9.0±1.0)
(5.0±0.5)
Tightening torque N»m(kgf-m)
9.80(1.0)
19.61 (2.0)
29.42 (3.0)
58.83 (6.0)
14.70(1.5)
29.42 (3.0)
44.12 (4.5)
53.93 (5.5)
1-13
4LHA Serie:
t
4LHA-HTE/-HTZE
4LHA-HTP/-HTZP
)
2
0.1
0.3
6
1 9 . 6 - 2 0 . 6 ( 2 0 0 - 2 1 0 )
N*m (kgf-m)
Wrench Wrench
17mm
17mm
19mm
4LHA-HTE/HTZE/HTP/HTZP
4LHA-STE/STZE/STP/STZP
4LHA-DTE/DTZE/DTP/DTZP
0
M 1 6 X 1 . 5
M 1 4 X 1 . 5
2 2 6 ± 9 . 8
1 3 7 ± 9 . 8
(23.0±1.0)
(14.0±1.0)