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Maintenance
78
Those components are replaced, if necessary.
The recommendations of parts for in-structure overhaul is as followed:
Clean
The lubricating pipes (rocker arm,
turbochargers)
Gas Mixer
Clean Inspect Test
Intercooler
Gas reducer
Gas metering valve
Oil cooler
Throttle
Shut off valve
Inspect Replace
Thermostatic valves (HT circuit)
Push rod
Pre-lubricating pump
Exhaust manifold
Ignition Coil
Tappet
Flywheel ring gear
Connecting-rod
Timing gears clearances
Rebuild Replace
Turbocharger
Cylinder head assemblies
Starter
Coolant pump
Replace
Piston pins
Piston rings
Pistons
Cylinder liners
Anti-polishing rings
Connecting-rod bolts
Connecting-rod bearings
Valve bridge
Rocker arm
Rocker arm shaft
Belt tensioner
The fan bracket
Damper and fixing screws
Breather filter cartridge
5.3.2.4 Overhaul (Major)
Generally, a major overhaul is performed for every fourth top overhaul. The need for a major
overhaul is determined by several factors. Some of those factors are the same factors that
determine the in-structure overhaul:
A decrease of main oil pressure at
rated speed ≤400kPa (Main factor)
An increase of oil consumption
An increase of crankcase blowby
Other factors must also be considered for determining a major overhaul:
Power output
The service hours of the engine
Reduced oil pressure
The wear metal analysis of the lube oil
An increase in the levels of noise and vibration
An increase of wear metals in the lube oil indicates that the bearings and the surfaces that
wear may need to be serviced. An increase in the levels of noise and vibration indicates that
rotating parts require service.
于千钧
“1005098300 - Operation_and_Maintenance_Manual_for_PowerKit_16M33_Series_Gas_Engine, A”
林世龙
许太法
宋安泽
20200425
于千钧
张安勇/Zhang Anyong
王巧荣