Moteurs Baudouin 12M26 Series, Operation & Maintenance Manual

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Operation & Maintenance Manual for 12M26 Series Gas Engine
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Step 1: Tighten the M16 main bolts to 80N.m and tighten the M20 auxiliary bolts to 80N.m.
Step 2: Tighten the M16 main bolts to 60° and tighten the M20 auxiliary bolts to 60°.
Step 3: Tighten the M16 main bolts to 60° and tighten the M20 auxiliary bolts to 60°.
Step 4: Tighten the M20 auxiliary bolts to 60° and tighten the M20 main bolts to 45°.
c
）
Connecting rod bolts
Install the connecting rod bolts and tighten uniformly and alternatively by three steps: 70N.m
for first step, 200N.m for second step, and 350N•m for third step. Apply lubricating oil to the
threads and carrying surfaces of connecting rod bolts.
d
）
Flywheel bolts
Install the flywheel bolts and tighten uniformly and alternatively by three steps: 70N.m for
first step, 400N.m for second step, and 640N•m for third step. Apply lubricating oil to the
threads and carrying surfaces of flywheel bolts.
Figure 4 sequence of flywheel bolts
e
）
Flywheel shell bolts
Tighten the flywheel shell bolts to 180N•m ，
apply sealant 242 to the threads of flywheel shell
bolts.
f
）
Tightening torque for fastening bolts of crankshaft pulley: 220N.m.
g
）
Tightening torque for fastening bolts of Torsional Vibration Dampers: 140N.m.
Recommended Torque for Standard Bolts was seen in follow table 1.
Table 1 Recommended Torque for Standard Bolts