Doosan GC25P-3 User Manual

LP Engine G430(3.0L) Index
- 3 -
Index
GENERAL INFORMATION
.......................................
7
Shop Safety
..........................................................
7
Fuel Information
....................................................
8
What is LPG?
..................................................
8
Air Temperature Versus Power Output
............
9
Altitude Versus Power Output
.......................
10
General Description & Operation
........................
11
Engine Component Description
.....................
11
Lubrication
.....................................................
11
Thread Repair
................................................
11
Cleanliness and Care
....................................
12
Replacing Engine Gaskets
............................
12
Use of RTV and Anaerobic Sealer
................
13
Separating Parts
............................................
14
Tools and Equipment
.....................................
14
SPECIFICATIONS
...................................................
15
Technical Data
....................................................
15
General Description
.......................................
15
Fuel System
..................................................
15
Cooling System
.............................................
16
Lubrication System
........................................
16
Engine Electrical
............................................
16
Exhaust System
(Low Emission Version Only)
........................
16
Engine Mechanical Data
.....................................
17
Fastener Tightening Specifications
...............
17
Sealer, Adhesives and Lubricants
.................
17
Engine Mechanical Specifications
.................
18
MAINTENANCE
......................................................
20
Test fuel system for leaks
...................................
20
Inspect engine for flluid leaks
.............................
20
Engine Crankcase Oil
.........................................
20
Oil Recommendations
...................................
20
Checking/Filling Engine Oil Level
..................
21
Changing Engine Oil And Filter
.....................
21
Accessory Drive Belts
.........................................
21
Inspect electrical system
.....................................
21
Inspect vacuum lines and fittings
........................
22
Inspect fuel lines and fittings
..............................
22
Engine Compression Check
...............................
22
Cooling System
...................................................
22
Checking coolant Level
.................................
22
Inspect coolant hoses
...................................
23
Inspect ignition system
.......................................
23
Replace spark plugs
...........................................
23
Replace LP fuel filter Element
............................
23
Test fuel lock (electric)
........................................
24
Inspect pressure regulaator/vaproizer ................
24
Inspect LP mixer (standard LP truck).................
24
Inspect variable venturi air/fuel mixer
(low emission LP truck) ......................................
24
Inspect complete exhaust system for
leaks, damage ....................................................
24
Engine Control Unit (ECU) and others
(low emission LP truck) ......................................
24
Maintenance schedule
........................................
25
TROUBLESHOOTING ............................................
26
Engine Performance
...........................................
26
Engine Starting Problems
...................................
26
Charging System Problems
................................
27
Instrument Problems
...........................................
27
Engine Noise
......................................................
28
Oil Pressure Diagnostics
....................................
30
Oil Pressure Problems
........................................
31
Water in Engine
..................................................
32
Engine Overheating
............................................
33
LP Fuel system
(Sandard and/or Low Emission Version) ............
34
STARTING SYSTEM...............................................
42
General Description
............................................
42
Start Relay Tests
...............................................
45
Starting Motors
..................................................
46
CHARGING SYSTEM
..............................................
47
General Description
............................................
47
Alternators
...........................................................
47
Remove & Install Alternator
...........................
49
IGNITION SYSTEM
.................................................
50
General Information
............................................
50
Conventional Ignition Systems
......................
50
High Energy Ignition Systems
.......................
51
Module
.....................................................
52
Pulse Generator
.......................................
52
Magnetic Flux Path
..................................
53
Current Limiting Circuit
.............................
53
Dwell Control Circuit
.................................
54
Ignition Coil
..............................................
55
HEl Models
...............................................
57
Electronic Spark Timing (EST) Distributor
....
59
Spark Plug Wires
..........................................
61
Spark Advance Curves
..................................
61
Delco Electronic Spark Timing
(EST) Distributor Service....................................
62
General Description
.......................................
62
EST Distributor Component Testing
..............
62
EST Distributor Removal
...............................
64
EST Distributor Disassembly
.........................
65
EST Distributor Installation
(Engine Not Disturbed)
..................................
66

Doosan GC25P-3 Specifications

General

Brand	Doosan
Model	GC25P-3
Category	Engine
Language	English