PS-MMA0507-E1A
MAINTENANCE MANUAL
DIESEL ENGINE
DE12
DE12T
DE12TI
DE12TIS
65.99897-8057
DE12/T/TI/TIS
MAINTENANCE MANUAL
Printed in Mar. 2001 PS-MMA0507-E1A
FOREWORD
This maintenance manual is designed to serve as a reference for DAEWOO Heavy
Industries Ltd's (here after DAEWOO’s) customers and distributors who wish to gain basic
product knowledge on DAEWOO's DE series diesel engines (DE12, DE12T, DE12TI and
DE12TIS)
These economical and high-performance diesel engines (6 cylinders, 4 strokes, in-line, direct
injection type) have been so designed and manufactured to be used for overland transport
industrial purpose. That meets all the requirements such as low noise, fuel economy, high
engine speed, and durability.
To maintain the engine in optimum condition and retain maximum performance for a long
time, CORRECT OPERATION and PROPER MAINTENANCE are essential.
In this manual, the following symbols are used to indicate the type of service operations to be
performed.
Removal
Adjustment
Installation
Cleaning
Disassembly
Pay close attention-Important
Reassembly
Tighten to specified torque
Align the marks
Use special tools of manufacturer's
Directional Indication
Lubricate with oil
Inspection
Lubricate with grease
Measurement
During engine maintenance, please observe following instructions to prevent environmental
damage;
Take old oil to an old oil disposal point only.
Ensure without fail that oil and diesel fuel will not get into the sea or rivers and
canals or the ground.
DE12/T/TI/TIS
MAINTENANCE MANUAL
Printed in Mar. 2001 PS-MMA0507-E1A
Treat undiluted anti-corrosion agents, antifreeze agents, filter element and
cartridges as special waste.
The regulations of the relevant local authorities are to be observed for the
disposal of spent coolants and special waste.
If you have any question or recommendation in connection with this manual, please do not
hesitate to contact our head office, dealers or authorized service shops near by your location
for any services.
For the last