Baudoulin 4M11G Maintenance Manual page 2

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators

The operator of the diesel engine must carefully read the product service manual of the diesel
engine, strictly abide by the technical operation and maintenance specifications specified in the
product service manual, and notice the warning instructions and signs.
 The delivery test was completed for the diesel engine as per the test specification strictly and
the throttle was already limited by lead seal at the time of delivery. It's prohibited to
disassemble the lead seal to increase the fuel volume.

The turbocharger rotor is a high-speed rotating part. When the machine runs, no moveable
items (like hand, tool, and cotton yarn) are allowed to approach the inlet of turbocharger, so as
to avoid causing damages to personnel or machine; the rotor assembly shall not be
disassembled except for that it is done by professional maintenance personnel or professional
maintenance stations licensed by Weichai;
 The strict torque and angle requirements are specified for the main bearing bolts and
connecting rod bolts of the diesel engine. Please do not loosen or disassemble any bolt by self.
The connecting rod bolts are of one-time bolts and can't be reused.

The oil and fuel added to the diesel engine must be of the designations specified in this service
manual. Dedicated clean filters must be used for the addition. Before addition, the fuel shall
settle for 72 hours. Before driving the vehicle, check that the coolant and oil levels meet the
requirements.

When the user uses a new machine, 50-hour trial running is needed to the machine. After the
run-in period, it is required to replace the engine oil and engine oil filter element.

After the cold start of the diesel engine, slowly increase the engine speed, instead of running at
high speed suddenly or long-term idling (not more than 3min). After the running under heavy
load, run the engine at low speed for 5~10min before stopping the engine, instead of stopping
the engine suddenly (except special cases);
 After the engine is stopped, if the temperature of working environment is probably below 0℃
and the coolant without antifreeze additive is used, fully drain the coolant from the water tank
and diesel engine.
 It's prohibited to run the diesel engine without the air filter, in order to prevent the supply of
Special Notice