Moteurs Baudouin 12M26 Series, Operation & Maintenance Manual

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Operation & Maintenance Manual for 12M26 Series Gas Engine
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Dear customers,
Welcome to use Weichai products! Thanks for your love to Weichai products!
Please read carefully the operation & maintenance manual of the natural gas engine and operate it in strict
accordance with relevant specifications so that you can operate and maintain it properly.
Service commitment:
If the engine fails, please contact Weichai Call Center at 400-6183066 as soon as possible. Our company promises
that the authorized service center will arrive at the site within 3 h (the city where you locate), within 24 h (general
areas) and within 48 h (remote areas), and will provide fast, high-quality and considerate service according to
Weichai service specifications.
Please read the followings carefully before your use for the purpose of running the engine effectively.
● The natural gas engine has been tested in strict accordance with the test specification before its delivery. Do
not adjust ECU data or increase the engine power without permission. Otherwise, the company's warranty
service will become invalid.
● Turbocharger rotor shaft is a precision high-speed rotating component, which shall not be dissembled or
collided; otherwise, the company's warranty service will become invalid.
● The engine’s main bearing bolts and connecting rod bolts have strict torque and corner requirements, and
shall not be loosened or dissembled by user. Connecting rod bolts for one-time use of bolts, shall not be
reused; otherwise, the company's warranty service will become invalid.
● The engine shall always be filled with oil of grade specified in this Manual. It is recommended to use the
special oil for Weichai gas engine and filter the oil with a special cleaning filter. Each time the engine is
started, make sure to check whether the filling amount of coolant and oil is proper. Make sure that the engine
uses the natural gas for automobiles as specified in the national standard.
● Never run the engine without an air filter.
● A new engine must be subject to running-in for 50 h before being put into service.
● Each time the spark plug is replaced, tighten them to the specified torque and ensure the ceramic body is
clean.
● If the ambient temperature is likely to be below 0 °C and no coolant containing antifreeze additive is used in
the engine after parking, the coolant shall be completely drained from the water tank and engine.
● The electrical system components must be inspected and maintained by electrical technicians only.
● The electronically controlled system components must be inspected and maintained by professionals from
Weichai authorized service station only.
● After starting a cold engine, never run it at an idle speed for a long time; do not stop the engine immediately
after running under heavy load (except under special circumstances); instead, run it at a low speed for 5~10
min before parking.
● Before starting a new engine, check the gas pipe, gas supply device and electrical system. Pay special
attention to checking whether the electrical connection is loosened and the high-voltage coil is connected
incorrectly.
● If the engine cannot be started after three successive attempts, check the gas system and the circuit carefully
again.
● The engine has been sealed to prevent rust and corrosion before its delivery. Generally, the sealing period is
one year. The engine beyond the sealing period should be checked and necessary remedies should be taken.
● For inspection and maintenance, please go to the service station designated by Weichai. Spare parts
designated by Weichai must be used for maintenance. Weichai will not be responsible for any damage to the
engine caused by using the undesignated spare parts.
● Replace emission-related key parts (such as turbocharger, ECU, and pressure reducer) with those of the same