Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
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③Loosen the lock nut, take out the turbocharger gasket, and take out the stud.
4.6.3.3 Inspection and Maintenance of Exhaust Pipe
① Check whether the exhaust pipe is cracked or damaged, and the flange is deformed, and if any, it
is required to replace the use exhaust pipe with a new one.
②Check whether the exhaust pipe flange is subject to gas leakage, and if any, it is required to
replace the used exhaust pipe gasket with a new one.
③Check the washer of exhaust pipe for deformation, tear and absence. If necessary, replace it with
a new one.
4.6.3.4 Exhaust Pipe Assembly Procedures
The assembly procedures are in the reverse order of the disassembly procedures. Please
pay attention when assembling:
①The exhaust pipe bolt is applied with anti-seize sealant (molybdenum disulfide), and tightened to a
torque within 465 N·m -50 N·m, and can be re-used twice at most.
4.6.4 Disassembly, Inspection, Repair, and Assembly of Turbocharger System
4.6.4.1 Exploded View for Assembly of Turbocharger System
1 - Turbocharger oil inlet pipe subassembly 2 - Turbocharger 3 - Turbocharger oil return pipe subassembly
Figure 4-47 Exploded View for Assembly of Turbocharger System
4.6.4.2 Turbocharger System Disassembly Procedures
The disassembly procedures are in the reverse order of the assembly procedures.
4.6.4.3 Inspection and Maintenance of Turbocharger System
1. Check the running status of rotor
By lightly turning the air compressor impeller with hand, rotation of the impeller by more
than 1 turn indicates that it is in normal condition. If the impeller stops immediately, it indicates
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