Doosan DE12T Manuals

Doosan DE12T Manuals

Manuals and User Guides for Doosan DE12T. We have 2 Doosan DE12T manuals available for free PDF download: Operation & Maintenance Manual

Doosan DE12T Operation & Maintenance Manual

Doosan DE12T Operation & Maintenance Manual (176 pages)

Brand: Doosan | Category: Engine | Size: 10.07 MB

Table of Contents

Table of Contents
3
1 Safety Regulations

5
2 General Information

9
- Engine Assembly
  9
- Engine Specification
  13
3 Technical Information

14
- Engine Model and Serial Number
  14
- Engine Type
  15
  - Cylinder Block
    15
  - Piston Con-Rod / Crankshaft
    15
- Engine Timing
  16
- Valves
  16
- Lubrication System
  17
  - Air Cleaner
    18
  - Fuel System
    18
  - Oil Cooler
    18
  - Oil Filter
    18
  - Fuel Filter
    19
  - Fuel Requirements
    19
  - How to Select Fuel Oil
    19
  - Fuel Oil Selection Chart
    20
  - Cooling System
    21
  - Coolant Pressure Cap
    22
  - Cooling Water
    22
  - Amount of Anti-Freeze in Winter
    23
  - V-Belt Tension Check and Adjust
    24
  - Turbocharger
    24
- Electrical Equipment
  25
  - Alternator
    25
  - Starter Motor
    26
4 Commissioning and Operation

27
- Preparation
  27
  - Breaking-In
    27
  - Operation of a New Engine (Break-In)
    27
  - Check Points for Break-In
    28
  - Operating after Break-In
    28
  - Inspections after Starting
    29
  - Pressure of Lubricating Oil
    29
- Operation in Winter Time
  29
- Temperature of Cooling Water
  29
- Tuning the Engine
  30
5 Maintenance and Care

31
- Periodical Inspection and Maintenance
  31
- Lubrication System
  31
  - Oil Exchange Procedure
    32
  - Recommend of Lubricating Oil
    33
  - Replacement of Oil Filter Cartridge
    34
  - Coolant Draining
    34
- Cooling System
  34
  - Cleaning of the Cooling System Inside Circuit
    35
  - Intercooler
    36
  - Air Intake System
    37
  - Maintenance (Only When Engine Is Switched Off)
    37
  - Changing Filter Element
    37
  - Cleaning Filter Elements
    38
  - Replacement of Fuel Filter
    39
  - Fuel System
    39
  - Fuel System Checks
    40
  - Air Removal of Fuel System
    40
  - Fuel Supply Pump
    40
  - Fuel Contamination and Water Trap
    40
  - Priming Pump Strainer Cleaning
    41
  - Bleeding the Fuel System
    41
  - Injection Pump
    41
  - Injection Nozzle Maintenance
    42
  - Maintenance (by Authorized Specialist Personnel)
    43
  - Special Hints
    43
  - Measuring Rotor Axial Clearance
    43
  - Measuring Radial Clearance
    43
- Turbocharger
  43
6 Checking and Setting

45
- Adjustment of Valve Clearance
  45
- Cylinder Compression Pressure
  48
  - V-Belts
    49
  - Measuring Tension
    49
  - Reading of Tension
    49
  - Tensioning and Changing V-Belt
    50
7 Operation Tip

51
- Periodic Inspection Cycle
  51
  - Engine Starting Impossible
    52
  - Engine Overheated
    53
  - Output Insufficient
    54
  - Oil Pressure Lowered
    55
  - Fuel Consumption Excessive
    56
  - Oil Consumption Excessive
    57
  - Battery Discharge
    58
- Causes and Remedies
  59
  - General Repair Instructions
    62
8 General Information

62
- Engine Characteristics
  63
  - OMEGA Combustion Bowl
    63
  - Oil Gallery Cooling Type Piston
    63
9 Disassembly and Reassembly of Major Components

64
- General Precautions
  64
- Alternator Belt
  65
- Cooling Fan
  65
- Engine Oil
  65
- Breather
  66
- Guide Tube of Oil Level Gauge
  66
- Injection Pipe
  67
- Intake Manifold
  67
- Turbo Charger
  67
- Exhaust Manifold
  68
- Starter
  68
- Thermostat
  68
- Water Pump
  69
- Fan Drive Pulley
  70
- Idle Gear
  70
- Timing Gear Case Cover
  70
- Vibration Damper
  70
- Cylinder Head Cover
  71
- Fuel Injection Pump Drive Assembly
  71
- Injection Nozzle
  71
- Rocker Arm Assembly
  71
- Cylinder Head
  72
- Valve and Valve Stem Seal
  72
- Oil Pan
  73
- Oil Pump and Oil Pipe
  73
- Relief Valve
  73
- Cylinder Liner
  74
- Flywheel
  74
- Cam Shaft and Tappet
  75
- Crankshaft Gear and Oil Pump Idle Gear
  75
- Flywheel Housing
  75
- Oil Seal
  75
- Crankshaft
  76
- Oil Spray Nozzle
  76
- Distortion at the Lower Face
  77
- Inspection
  77
  - Lower Face Warpage and Height
    77
  - Flatness
    78
  - Hydraulic Test
    78
  - Valve and Valve Guide
    78
  - Valve Stem Outer Diameter
    78
  - Valve Guide
    79
  - Valve Head Thickness
    79
  - Valve Stem End Play
    79
  - Contacting Face Amount
    80
  - Valve Contact Width
    80
  - Valve Depression
    80
  - Valve Seat
    80
  - Valve Spring
    81
  - Valve Spring Free Length
    81
  - Valve Spring Inclination
    81
  - Visual Check
    81
  - Rocker Arm Shaft Assembly
    82
  - Rocker Arm Shaft Diameter
    82
  - Rocker Arm Shaft Run-Out
    82
  - Valve Spring Tension
    82
  - Clearance
    83
  - Diameter of the Rocker Arm Bushing
    83
  - Rocker Arm
    83
  - Tappet and Push Rod
    83
  - Outside Diameter
    84
  - Push Rod Run-Out
    84
  - Visual Check of Tappet
    84
  - Cam Lobe Height
    85
  - Cam Shaft
    85
  - Cam Surface
    85
  - Cam Shaft End Play
    86
  - Defect Check
    86
  - Run-Out
    86
  - Undersize Bearings Available
    87
  - Wear
    87
  - Crank Shaft Bearing and Connection Rod Bearing
    88
  - Crankshaft Run-Out
    88
  - Main Bearing Oil Clearance
    88
  - Oil Clearance between Crankshaft and Bearing
    88
  - Bearing Spread and Crush
    89
  - Connecting Rod Bearing Clearance
    89
  - Connecting Rod Bearing Crush
    90
  - Crank Shaft End Play
    90
  - Crankshaft Bearing Crush
    90
  - Clearance between the Piston and Cylinder Liner
    91
  - Piston
    91
  - Piston Ring Gap
    92
  - Piston Ring Side Clearance
    92
  - Piston Rings
    92
  - Piston Pin
    93
  - Piston Ring Tension
    93
  - Holes Alignment (Parallelism)
    94
  - Reassembly
    95
  - Tappet and Cam Shaft
    95
  - Rear Oil Seal
    98
  - Timing Gear
    100
  - Front Oil Seal
    101
  - Piston and Connecting Rod
    102
  - Tightening Order
    104
  - Intake and Exhaust Valves
    105
  - Nozzle Tube
    106
  - Cylinder Head Bolts
    107
  - Tightening Order of Bolts by Steps
    107
  - Guide for Valve Clearance Adjustment
    108
  - Vibration Damper End Pulley
    112
  - Power Take-Off
    113
- Breaking-In
  116
10 Maintenance of Major Components

117
- Cooling System
  117
- Fuel Injection Pump
  121
  - Lubricating System
    121
- Turbocharger
  159
11 Special Tool List

167

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Doosan DE12T Operation & Maintenance Manual

Doosan DE12T Operation & Maintenance Manual (158 pages)

DIESEL VEHICLE ENGINE

Brand: Doosan | Category: Engine | Size: 8.03 MB

Table of Contents

Table of Contents
5
1 General Information

7
- General Repair Instructions
  7
- Engine Characteristics
  8
- Engine Specifications
  9
- Engine Assembly
  18
2 Major Maintenance

25
- Preventive Maintenance
  25
- Diagnosis and Remedy
  33
- Engine Inspection
  43
3 Disassembly and Reassembly of Major Components

44
- Disassembly
  44
- Inspection and Measurement
  58
- Reassembly
  73
- Breaking-In
  95
4 Maintenance of Major Components

97
- Cooling System
  97
- Lubricating System
  102
- Fuel Injection Pump
  106
- Turbocharger
  138
Appendix

146
- Parts & after Service Center
  156

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