Chapter I Introduction
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
5
Section IV Dress Security Requirements for Maintenance Personnel
(1) The maintenance personnel should wear work wear during working.
(2) The personnel with long hair or a long braid should wear a working hat, and the braid should be
wrapped into the hat to prevent from being involved into the rotating machine.
(3) Do not open your clothes or loosen the cuff when carrying out repair; do not wear gloves when
operating the rotating machine.
(4) When there are strong light, or metal debris splashing in the work area, and when working on the
place in contact with strong acid, refrigerant and other chemicals, wear safety goggles.
Section V Main Contents of Maintenance Process Regulation
The contents of the maintenance process regulation for the engine are as follows:
(1) The procedure sequence and detailed operation contents to accomplish the maintenance work.
(2) The tools, equipment and correct operating methods that should be adopted to ensure the
maintenance quality and operation security.
(3) Quality test items and test facilities that should be used during maintenance.
(4) Quality requirements that should be met in the process of maintenance.
(5) Norm of the working hour to accomplish the maintenance work.
Section VI Identification Marks
Serial number of the engine
The serial number of GW4D20/GW4D20B turbocharged diesel
engine is stamped on the left cylinder body, as shown in Fig.
1-6-1.
Fig. 1-6-1 Serial Number
Identification of Diesel Engine
Position of
identification mark
Machine code
Asterisk
Year
Month
Serial number
Asterisk
