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KM/4L22
Lovol KM/4L22 User Manual
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MAINTENANCE MANU
AL OF ENGINE
42
4.9 Installing the c
ylinder head co
ver
First
check
the
gasket
of
cylinder
head
cover
for
damage. I
f any
, replace it with a new on
e.
1. Instal
l the gasket and cy
l
inder head
cover
.
A-Gasket of cy
linder head cover
B-Cyl
inder head cover
2.
T
ighten
the
bolts
(A)
fo
r
fixi
ng
cy
linder
head
cover
.
A- Bolt
A
B
A
47
49
Table of Contents
Default Chapter
3
Table of Contents
3
Preface
7
Chapter 1 Safety Precautions
7
No-Touching Symbol
7
Part I Overview
7
Scalding Symbol
7
Engine Hoisting Equipment
8
Chapter 2 Technical Parameters
9
Main Technical Parameters
9
Capacities
9
Overall Dimensions
9
Technical Parameters
10
Torque Specifications
12
Some Exposed Parts of Engine
13
Chapter 3 Fuel and Engine Oil
15
Use and Precautions for Fuel
15
Engine Lubricating Oil
17
Engine Coolant
18
Chapter 4 Position of Product Nameplate
19
Information of Diesel Engine Nameplate
19
Fuel Injection Pump Nameplate
20
Position of Alternator Nameplate
21
Starter Nameplate
22
Air Compressor Nameplate
23
Chapter 5 Product Features and Accessories
24
Standard Configuration
24
Configuration (Optional)
25
Chapter 1 Dismantling/Installing the Valve Mechanism
26
Maintenance Equipments and Tools
26
Torque and Data
26
Dismantling the Valve Mechanism
29
Installing the Valve Mechanism
37
Part II Dismantlement, Installation and Adjustment
26
Chapter 2 Dismantling/Installing the Crank-Link Mechanism
49
Maintenance Equipments and Tools
49
Torque and Data
49
Dismantling the Crank-Link Mechanism
51
Installing the Crank-Link Mechanism
57
Chapter 3 Cooling System
70
Maintenance Equipments and Tools
70
Torque Requirements
70
Dismantling the Cooling Part
71
Assembling the Cooling Part
77
Chapter 4 Lubricating System
81
Maintenance Equipments and Tools
81
Torque Requirements
81
Dismantling/Installing the Oil Pan Parts
82
Dismantling the Oil Pan Parts
82
Dismantling/Installing the Oil Pump Parts
84
Chapter 5 Electric System
86
Maintenance Equipments and Tools
86
Torque Requirements
86
Dismantling/Installing the Alternator Assembly
87
Dismantling the Alternator Subassembly
89
Dismantling/Installing the Starter
90
Chapter 6 Fuel Supply System
91
Maintenance Equipments and Tools
91
Torque Requirements
91
Dismantling the Fuel Supply System
92
Assembling the Fuel Supply System
96
Chapter 7 Dismantling/Installing and Adjusting the Accessories
98
Data and Dimension
98
Dismantling/Installing the Intake Pipe
99
Dismantling/Installing the Exhaust Pipe
101
Dismantling/Installing the Gear Chamber
103
Dismantling/Installing the Flywheel Parts
111
Chapter 1 Dynamic Inspection
114
Overview
114
Inspecting Engine Oil Level
115
Inspecting the Coolant Level and Status
116
Inspecting the Fan and Belt
117
Inspecting the Fuel System
118
Inspecting the Air Intake and Exhaust System
119
Inspecting the Electric System
120
Part III Inspection, Adjustment, Fault Diagnosis and Troubleshooting
114
Chapter 2 Operating Principle
121
Valve Mechanism
121
Crank-Link Mechanism
123
Lubricating System
125
Fuel Supply System
126
Cooling System
127
Electric System
128
Chapter 3 Inspection and Adjustment
135
Inspecting Valve Clearance (MM)
135
Inspecting Cylinder Pressure
136
Inspecting the Engine Oil Pressure
137
Inspecting Fuel Injection Pump Timing
139
Calibration of the Fuel Injection Pump
140
Inspecting Atomization by the Fuel Injector
141
Chapter 4 Fault Analysis and Troubleshooting
142
White Smoke
142
Blue Smoke
142
Black Smoke or Grey Smoke
143
Insufficient Compression Pressure of Cylinders
143
Air Intake Obstructed
144
Black Smoke
144
Abnormal Sound from the Diesel Engine
145
The Engine Cannot be Operated Normally or Flames out Frequently
146
Low Power
147
The Engine Oil Is Mixed with Water
148
Abrupt Increase in Speed
148
Erratic Operation
149
Engine Overheat
149
Abnormal Coolant Temperature
150
No Engine Oil Pressure or Low Pressure
151
The Engine Oil Pressure Is too High
151
The Engine Oil Temperature Is too High
152
High Engine Oil Consumption
152
Cannot be Started or be Started Difficultly
153
Low Starter Speed
153
The Diesel Engine Is Started Difficultly
154
4
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Lovol KM/4L22 Specifications
General
Brand
Lovol
Model
KM/4L22
Category
Engine
Language
English
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