Yanmar YM155d User Manual

CONTENTS
I . Nomenclature ................ 1
.
I I Specifications ................. 5
1 . Specifications .................. 5
2 Power train ................... 10
Power train (1) ................. 10
Power train
(2) ................. 11
Power train
(3) ................. 12
Power train
(4) ................. 13
3
. Transmission sectional view ........... 14
4
. Electric wiring diagram ............ 15
5
. Fuel system ................... 17
6
. Engine lubricating system ............ 17
7
. Cooling system ................. 18
8
. Transmission lubelhydraulic system ..... 18
Ill . Tractor separation ............. 19
IV . .Disassembly sequence ............ 20
V . Engine disassembly ............. 31
VI . Engine construction and maintenance . 35
................. 1 . Cylinder liners 35
2
. Pinons ..................... 36
3
. Piston rings .................. 37
4
. Piston pin .................... 38
5
. Connecting rods ................ 39
6
. Crankshaft ................... 40
.................... . 7 Camshaft 43
................. 8 . Cylinder head 45
9
. Combustion chambers ............. 46
10 . Rocker arm assembly ..............
48
.......
11 . Injection pump and injection valve
48
12 Governor .................... 53
13 . Lubricating oil pump ..............
53
.
14 Cwling system ................. 54
15 . Gears ..................... 54
.......
16. Oil seals. O-rings and ball bearings
54
VII . Engine assembly ............... 55
VI I I . Engine adjustments ............ 61
1 . Governor linkage ................ 61
2 Valve clearance ................. 61
3
. Fuel injection timing .............. 62
4
. Fan belt tension ................ 63
5
. Air venting (bleeding) .............. 63
...... 6 . Other measurements and inspections
64
IX . Electrical equipment ............ 65
1 . Battev ..................... 65
2
. Governor & current limiter ........... 67
3
. Inspection and characteristics .......... 69
4 . Cautions during handling and assembly ..... 70
5 . Instructions for disassembly and assembly ... 71
6 . Maintenance and inspection ........... a1
7 . Starter motor .................. 72
8
. Thermostart (optional) ............. 78
........... . 9 Turn signal lights (optional) 77
10
. Water temperature indicator light ........ 77
11 . Engine lube oil pressure ............. 77
12 . Horn ...................... 78
13
. Lights ..................... 78
74
. Safety start switch ............... 78
X . Tractor construction and maintenance . . 79
1 . Clutch and relevant items ............ 79
.........
2 Transmission and related items 83
3 . Brake ...................... 89
4
. Hydraulic lift device .............. 90
5 . Steering ..................... 93
6
. Front axle and rear axle ............. 95
XI . Tractorassembly .............. 103
1 . General assembly ............... 103-
2 Transmission assembly ............ 105
2-1 P.T.O. driving shaft assembly ...... 105
2-2 'P.T.o. fork shaft assembly ....... 106
2-3 Front P.T.O. shaft assembly
(YM135D . YM155D) .......... 107
2-4 Front P.T.O. shift shaft assembly
(YM135D . YM155D) .......... 107
2-5 Driven shaft assembly .......... 108
2-6 Counter shaft assembly ......... 109
2-7 Low-high shift shaft assembly ...... 110
2-8 Main change shaft assembly ....... 110
2-9 The fork of the
2ndl3rd speed shift
shaft assembly
............. Ill
2-10 Reversellst speed shift shaft
assembly
................ 112
2-1 1
Main shaft and transmission front
cover assembly
............. 113
2-12 Gear shaft lever assembly
........ 114
2-13 P.T.O. reduction shaft assembly
..... 115
2-14 Connecting shaft assembly
....... 115
2-15 P.T.O. shaft assembly
.......... 116
2-16 Differential lock shaft
aisembly ..... 117
2-17
Final reduction pinion and rear
...........
axle shaft assembly 118
...........
2-18 Differential device 120,
2-18 (a) Disassembly ............. 12
2-18
(b) Assembly ............... 122
2-19 Cam
. differential lock assembly ..... 122

Yanmar YM155d Specifications

General

Brand	Yanmar
Model	YM155d
Category	Tractor
Language	English