M/E NO1& NO2 Unit  Overhaul for HOPA

Project Name:

M/E NO1& NO2 Unit Overhaul for HOPA

Project Start Time:

2023-11-10 09:50


Decoration style:

M/E Overhaul

Project description:


Progress:

Work in advance

Work in advance

Removal of bolts and tubes for opening the cylinder head

Disassembly of cylinder parts

Opening of cylinder head bolts at 1500bar

Progress:

Unit 1 overhaul

Unit 1 overhaul

Open the cylinder head Pick up the cylinder head    
Disassemble the piston unit in the crankcase Pull up the piston unit    
Remove the piston ring Measure the piston ring gap    
 Sharpen the piston crown Remove the piston crown    
Clean the piston skirt Clean the piston crown and replace the sealing rings    
Clean piston skirt and replace sealing ring Reassemble piston crown    
Tighten bolts Piston bolt mounting safety line    
Disassemble the stuffing box Measure the stuffing box and recode it      
Replace wiper ring in stuffing box Replace spring in stuffing box    
Clean and inspect the stuffing box housing Reassemble the scavenge box    
Clean stuffing box and replace sealing ring Pressure test    
Clean and inspect cylinder liner for integrity     
Measure and record cylinder liner Piston ring renewal    
Piston unit reinstallation    
Cylinder head water jacket disassembly and cleaning    
Cylinder head water jacket grinding Cylinder head water jacket sealing ring renewal    
Install back cylinder liner water tube Clean cylinder head surface    
Install back cylinder head Remove exhaust valve    
Replace exhaust valve and renew sealing ring    
Install exhaust valve    
Tighten exhaust valve bolts
Clean scavenge box Clean crankcase

Progress:

NO 2 Overhaul the unit

NO 2 Overhaul the unit

Pull out piston unit Remove piston rings    
Measure piston ring gap Grind piston crown    
Disassemble piston crown Piston skirt cleaning    
Piston skirt cleaning and inspection Piston crown cleaning and sealing ring replacement
Replace piston skirt sealing ring Reassemble piston crown    
Bolt tightening Piston bolt installation safety line    
Stuffing box measurement and recoding Stuffing box wiper and spring replacement    
Clean and inspect stuffing box housing Reinstall scavenge box    
Clean stuffing box and replace sealing ring Pressure test    
Cylinder sleeve measurement and recording    
Piston reassembly Piston ring renewal    
Cylinder head water jacket removal and cleaning    
Grind cylinder head water jacket    
Renew cylinder head sealing ring and install back    
Bolt down and install safety wire    
Replace and install cylinder liner water tube o-rings    
Fire ring renewal Cylinder liner surface cleaned and parts replaced    
 Put back cylinder head    
Exhaust Valve    
Replace exhaust valve and renew sealing ring    
Replace exhaust valve    
Replace cylinder head bolts

Progress:

Job Done

Job Done