Service Manual

Weichai America Corp.
Revision: August 2019 15
Fig. 3-4 Exploded view of exhaust manifold
3.3.2 Exhaust Manifold Disassembly Procedure
CAUTION: All parts of the exhaust manifold and exhaust elbow will be extremely hot after
engine operation.
1. Remove the heat shield bolts and the heat shield.
2. Untie the exhaust elbow insulation ties. Remove the exhaust elbow insulation with the ties.
3. Loosen and remove the oxygen sensor.
4. Remove the nuts bolting the exhaust elbow to the exhaust manifold. Remove the exhaust elbow
and gasket.
5. Remove the nuts bolting the exhaust manifold to the engine block. Remove the exhaust
manifold.
3.3.3 Exhaust Manifold Assembly Procedure
Reverse the Disassembly Procedure (3.3.2) to assemble the exhaust pipe. Note the following
during assembly:
1. Apply molybdenum disulfide to exhaust manifold bolts before use.
2. Torque the exhaust manifold attachment bolts to the recommended tightening torque of
65~80Nm.
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