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4Y
Toyota 4Y User Manual
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1
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Table of Contents
Section Index
6
General Information
8
Engine Views
9
Engine Performance Curves
10
Specifications
12
Abbreviations
13
General Rules of Servicing Work
13
Standard Bolt and Nut Tightening Torque Judgement
14
List of Bolt Types and Strength
14
Standard Bolt Tightening Torque
15
Engine Tune-Up
16
Coolant Inspection
17
Engine Oil Inspection
17
Battery Electrolyte Level and Specific Gravity Inspection
17
Air Cleaner Inspection and Cleaning
17
Clogging Warning System Inspection
18
V-Belt Inspection and Adjustment
18
Ignition Plug Cleaning, and Gap Inspection and Adjustment
19
Ignition Timing Inspection and Adjustment
20
Idle-Up Inspection and Adjustment
20
Idling Speed Inspection and Adjustment
21
Compression Pressure Inspection
21
Engine Overhaul
24
Engine Sectional Views
25
Engine Transverse Sectional View
26
Cylinder Head Components View
27
Manifold Components View
28
Cylinder Head Removal
29
Cylinder Head Disassembly
33
Cylinder Head Inspection and Cleaning
34
Cylinder Head Assembly
43
Cylinder Head Installation
43
Timing Gear and Camshaft Components View
48
Timing Gear and Camshaft Removal
49
Timing Gear and Camshaft Components Inspection
55
Crankshaft Front Oil Seal and Bearing Replacement
58
Timing Gear and Camshaft Installation
59
Cylinder Block Components View
64
Crankshaft an Piston Components View
65
Cylinder Block Removal
66
Cylinder Block Inspection
72
Piston and Connecting Rod Disassembly
73
Piston and Connecting Rod Inspection
74
Crankshaft Inspection
77
Camshaft Bearing Inspection
78
Camshaft Bearing Replacement
78
Valve Lifter Hole Inspection
80
Crankshaft Rear Oil Seal Replacement
81
Piston and Connecting Rod Assembly
82
Cylinder Block Assembly
84
Fuel System
88
Fuel System Inspection on Vehicle
89
Inspection in Cold State
89
Inspection in Hot State
89
Inspecting the Choke Breaker System
89
Fuel Pump Contents View
90
Fuel Pump Removal
91
Fuel Pump Inspection (Airtightness Check)
91
Fuel Pump Installation
92
Carburetor System Diagram
93
Carburetor Components Diagram
94
Vacuum Hose and Water Hose Components View
95
Carburetor Removal
96
Carburetor Disassembly
97
Air Horn Disassembly
97
Carburetor Body Disassembly
99
Flange Disassembly
101
Disassembled Components Cleaning/Inspection
102
Flange Assembly
105
Carburetor Body Assembly
105
Carburetor Body Installation
107
Air Horn Assembly
107
Carburetor Adjustment
110
Carburetor Installation
113
Fast Idle Cam Adjustment
114
Choke Valve Adjustment
114
Air Governor Components View
115
Air Governor Removal
116
Air Governor Disassembly
116
Air Governor Inspection
118
Air Governor Assembly
119
Air Governor Installation
119
Air Governor Adjustment
120
Air Governor Standard
121
Air Governor Adjustment Procedures
121
PCV System
124
PCV Equipment View
125
Ventilation Valve Removal
125
Ventilation Valve Inspection
125
Ventilation Valve Installation
125
Cooling System
126
Coolant Inspection and Replacement
127
Radiator Inspection
128
Coolant Replacement
128
Thermostat Removal
129
Thermostat Inspection
129
Thermostat Installation
130
Water Pump ASSY View
131
Water Pump ASSY Removal
132
Water Pump ASSY Inspection
133
Water Pump ASSY Installation
133
Lubrication System
136
Oil Pressure Inspection
137
Oil Filter Components View
138
Engine Oil Filter Replacement
139
Oil Pump Components View
141
Oil Pump Removal
142
Oil Pump Disassembly
143
Oil Pump Inspection
145
Oil Pump Assembly
145
Oil Pump Installation
146
Ignition System
148
Ignition System Circuit Diagram
149
Ignition System Inspection on Vehicle
150
Resistive Cord Inspection
150
Spark Plug Inspection and Adjustment
150
Ignition Coil Inspection
150
Igniter Inspection
151
Distributor Inspection
152
Distributor (IIA) Sectional View
153
Distributor Components View
154
Distributor Removal
155
Distributor Disassembly
155
Governor Shaft (or Spiral Gear) Replacement
159
Governor Shaft (or Spiral Gear) Installation
160
Distributor Installation
164
Starting System
166
Starting Motor View
167
Starting Motor Removal
168
Starting Motor Disassembly
169
Starting Motor Ispection
172
Starting Motor Installation
176
Individual Starting Motor Inspection
179
Charging System
180
Charging System Inspection on Vehicle
181
Alternator Assy Components View
182
Alternator Circuit Diagrams
183
Alternator Assy Removal
184
Alternator Assy Disassembly
184
Alternator Assy Inspection
187
Alternator Assy Assembly
189
Alternator Assy Installation
191
SST List
192
Service Standards
196
Engine Tune-Up Service Standards
197
Engine Body Cylinder Head Service Standards
197
Valve Guide Bush/Valve Service Standards
198
Valve Spring Service Standards
198
Rocker Arm and Shaft Service Standards
198
Push Rod Service Standards
198
Intake and Exhaust Manifold Service Standards
199
Camshaft Service Standards
199
Timing Chain and Timing Gear Service Standards
199
Tensioner and Damper Service Standards
200
Valve Filter Service Standards
200
Cylinder Block Service Standards
200
Piston, Piston Ring Service Standards
200
Connecting Rod Service Standards
201
Crankshaft Service Standards
201
Fuel System/Carburetor Service Standards
202
Cooling System Service Standards
202
Lubrication System Service Standards
202
Oil Pump Service Standards
202
Ignition System Service Standards
203
Distributor (IIA) Service Standards
203
Starting Motor Service Standards
203
Charging System/Altenator Service Standards
204
Tightening Torque
205
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Toyota 4Y Specifications
General
Displacement
2237 cc
Compression Ratio
8.8:1
Fuel System
Carburetor
Cooling System
Water-cooled
Fuel Type
Gasoline
Engine Type
4-cylinder
Valve Train
OHV
Max Power
97 hp
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