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DE12T
Operation & maintenance manual
Doosan DE12T Operation & Maintenance Manual
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Operation & maintenance manual
(158 pages)
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Table Of Contents
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Contents
Table of Contents
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Table of Contents
Table of Contents
1 Safety Regulations
General Notes
Regulations Designed to Prevent Accidents
Regulations Designed to Prevent Damage to Engine and Premature Wear
During Maintenance and Care
When Carrying out Checking, Setting and Repair Work
Regulations Designed to Prevent Pollution
Engine Oil, Filter Element, Fuel Filter
Coolant
Notes on Safety in Handling Used Engine Oil
2 General Information
Engine Assembly
Engine Sectional View (Longitudinal)
Engine Sectional View (Cross)
Engine Assembly Views
Engine Specification
3 Technical Information
Engine Model and Serial Number
Engine Type
Cylinder Block
Piston Con-Rod / Crankshaft
Engine Timing
Valves
Lubrication System
Air Cleaner
Fuel System
Oil Cooler
Oil Filter
Fuel Filter
Fuel Requirements
How to Select Fuel Oil
Fuel Oil Selection Chart
Cooling System
Coolant Pressure Cap
Cooling Water
Amount of Anti-Freeze in Winter
V-Belt Tension Check and Adjust
Turbocharger
Electrical Equipment
Alternator
Starter Motor
4 Commissioning and Operation
Preparation
Breaking-In
Operation of a New Engine (Break-In)
Check Points for Break-In
Operating after Break-In
Inspections after Starting
Pressure of Lubricating Oil
Operation in Winter Time
Temperature of Cooling Water
Tuning the Engine
5 Maintenance and Care
Periodical Inspection and Maintenance
Lubrication System
Oil Exchange Procedure
Recommend of Lubricating Oil
Replacement of Oil Filter Cartridge
Coolant Draining
Cooling System
Cleaning of the Cooling System Inside Circuit
Intercooler
Air Intake System
Maintenance (Only When Engine Is Switched Off)
Changing Filter Element
Cleaning Filter Elements
Replacement of Fuel Filter
Fuel System
Fuel System Checks
Air Removal of Fuel System
Fuel Supply Pump
Fuel Contamination and Water Trap
Priming Pump Strainer Cleaning
Bleeding the Fuel System
Injection Pump
Injection Nozzle Maintenance
Maintenance (by Authorized Specialist Personnel)
Special Hints
Measuring Rotor Axial Clearance
Measuring Radial Clearance
Turbocharger
6 Checking and Setting
Adjustment of Valve Clearance
Adjusting Order of the Valve Clearance
Method of Adjusting the Valve Clearance
Adjustment of Injection Timing
Method of Adjusting Injection Timing
Cylinder Compression Pressure
V-Belts
Measuring Tension
Reading of Tension
Tensioning and Changing V-Belt
7 Operation Tip
Periodic Inspection Cycle
Engine Starting Impossible
Engine Overheated
Output Insufficient
Oil Pressure Lowered
Fuel Consumption Excessive
Oil Consumption Excessive
Battery Discharge
Causes and Remedies
General Repair Instructions
8 General Information
Engine Characteristics
OMEGA Combustion Bowl
Oil Gallery Cooling Type Piston
9 Disassembly and Reassembly of Major Components
General Precautions
Alternator Belt
Cooling Fan
Engine Oil
Breather
Guide Tube of Oil Level Gauge
Injection Pipe
Intake Manifold
Turbo Charger
Exhaust Manifold
Starter
Thermostat
Water Pump
Fan Drive Pulley
Idle Gear
Timing Gear Case Cover
Vibration Damper
Cylinder Head Cover
Fuel Injection Pump Drive Assembly
Injection Nozzle
Rocker Arm Assembly
Cylinder Head
Valve and Valve Stem Seal
Oil Pan
Oil Pump and Oil Pipe
Relief Valve
Cylinder Liner
Flywheel
Cam Shaft and Tappet
Crankshaft Gear and Oil Pump Idle Gear
Flywheel Housing
Oil Seal
Crankshaft
Oil Spray Nozzle
Distortion at the Lower Face
Inspection
Lower Face Warpage and Height
Flatness
Hydraulic Test
Valve and Valve Guide
Valve Stem Outer Diameter
Valve Guide
Valve Head Thickness
Valve Stem End Play
Contacting Face Amount
Valve Contact Width
Valve Depression
Valve Seat
Valve Spring
Valve Spring Free Length
Valve Spring Inclination
Visual Check
Rocker Arm Shaft Assembly
Rocker Arm Shaft Diameter
Rocker Arm Shaft Run-Out
Valve Spring Tension
Clearance
Diameter of the Rocker Arm Bushing
Rocker Arm
Tappet and Push Rod
Outside Diameter
Push Rod Run-Out
Visual Check of Tappet
Cam Lobe Height
Cam Shaft
Cam Surface
Cam Shaft End Play
Defect Check
Run-Out
Undersize Bearings Available
Wear
Crank Shaft Bearing and Connection Rod Bearing
Crankshaft Run-Out
Main Bearing Oil Clearance
Oil Clearance between Crankshaft and Bearing
Bearing Spread and Crush
Connecting Rod Bearing Clearance
Connecting Rod Bearing Crush
Crank Shaft End Play
Crankshaft Bearing Crush
Clearance between the Piston and Cylinder Liner
Piston
Piston Ring Gap
Piston Ring Side Clearance
Piston Rings
Piston Pin
Piston Ring Tension
Holes Alignment (Parallelism)
Reassembly
Tappet and Cam Shaft
Rear Oil Seal
Timing Gear
Front Oil Seal
Piston and Connecting Rod
Tightening Order
Intake and Exhaust Valves
Nozzle Tube
Cylinder Head Bolts
Tightening Order of Bolts by Steps
Guide for Valve Clearance Adjustment
Vibration Damper End Pulley
Power Take-Off
Breaking-In
10 Maintenance of Major Components
Cooling System
Fuel Injection Pump
Lubricating System
Turbocharger
11 Special Tool List
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Engine Oil, Filter Element, Fuel Filter
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