Project progress

A/E NO.2 and NO.3 need carry out overhaul during vessel in dry dock at YouLian Shipyard.

1- No3 D/G Engine 6 Units Cylinder Covers To Be Opened Up Cylinder Cover. Exhaust Valves, Intake Valves, Seat
Dismantled And Replaced With New Spares, Valve Lapped And Valve Clearance Adjusted.
2- Piston unit cleaned and measurement ,big end bearing not replace. piston ring /bolts replaced
3- Liner to Be cleaned measured and recorder, liner is not good condition and renewal for NO 1/NO2/NO4/NO5/NO6
4- connecting rod was oversize but still in limit ,meanwhile vessel have not parts of connecting rod ,our engineer
polishing connecting rod and assemble back and we advice replace by crew in the future.
5-Main bearing inspection for No 1 & No 7, thrust washer inspection and replaced
6-Fuel pump overhauled and prats renewal necessary
7-Swing arm dismantled /inspection and NO 4/5/6 was damaged ,need replaced (vessel have no parts)
8- NO1 cyl replaced new cyl cover, because cover not good condition,cyl 5 cover changed from cyl 6 of unit 2
9-Aft overhaul running testing is normally

Vessel name  and Name plate for D/G

Dismantle the bolt and pipe for open cylinder cover Deflection measurement
Unit No.3 Cylinder parts dismantle Unit No.3 Cylinder Cover bolt remove
Pick up cylinder cover Open up cylinder cover
Open all cylinder cover and cleaning

1.CYL COVER OVERHAUL

Cylinder head dis-assembly and cleaned cooling water jacket/inlet valve /surface
spindle guide replaced Cooler for FO injection renewal
Before remove valve seat ,welding /heating necessary Cylinder head aft cleaned
Valve seat replaced Leakage testing
Valve seat replaced Valve lapping
Lapping valve seat aft renewal Pressure testing aft overhaul
Rocap disassemble /inspection Fuel pluger calibration/parts renewal

2.LINER INSPECTION AND REPLACED

Measurement liner and recorder ,liner was oversize need replace necessary
Drawing up old liner for No.1/2/4/5/6
cleaned the cylinder area surface Replaced new liner,parts by owner provide
Re-assembly cylinder liner and replace o-ring
Hydraulic pump before overhaul Hydraulic pump dis-assembly /cleaned/inspection /parts renewal
Aft overhaul continue
Cam shaft inspection was good condition
Swing arm dismantled /inspection and NO 4/5/6 was damaged ,aft polishing assembly
back ,but need replaced feture (vessel have no parts)

3.PISTON UNIT

Piston head cleaned
Piston head drill hole
Bearing for connecting rod is good condition
Connecting rod measurement and recorder,that was oversize ,but still in the wear limit ,we advice replace
the connecting rod in the future
Polishing oversize area
Measurement is good condition aft polishing
Check the surface aft polishing and lapping
re-assembly connecting rod
Tigting by special tools Insurance wire tighting

4.CRANK PIN &MAIN BEARING INSPECTION

Crank pin inspection /measured /that is good condition
No.7 main bearing dismantled/inspection is good condition No.1 main bearing dismantled/inspection is good
condition,trust washer inspection and replaced

5.ASSEMBLY UNIT AND RUNNING TEST

Liner and piston unit assembly Re-assembly
No5 cyl cover surface leakage ,changed from cyl 6 unit 2 NO1 cyl cover surface leakage ,replaced new cover
New cover replaced for cyl 1 of UNIT 3
Tighting bolts by 900bar Crank case cleaned
Check temperture aft running 1 hour

1-No2 D/G Engine  6 Units Cylinder Covers To Be Opened Up  Cylinder Cover. Exhaust Valves, Intake Valves, Seat  Dismantled And Replaced With New Spares, Valve Lapped And Valve Clearance Adjusted.
2-Piston unit cleaned and measurement ,big end bearing not replace. piston ring /bolts not replaced,Liner to Be cleaned measured and recorder, liner is good condition   
3-- connecting rod was oversize but still in  limit ,meanwhile vessel have not parts of connecting rod ,our engineer polishing connecting rod for NO1/2/3/4/6   NO 5 replace new parts (vessl’parts)  
4-Main bearing inspection and replaced for No 1 ~ No 7, thrust washer inspection and replaced
5-Fuel pump overhauled and prats renewal necessary
6-Swing arm dismantled /inspection
7- one addtional of spare cly cover overhaul

 
1.CYL COVER OVERHAUL

Dismantle parts necessary    Open the cyl cover
Dis-assembly cyl cover    grinding/cleaning
Cyl cover cleaning    Guides replaced
Cooler for Fo injection replaced    V/v seats replaced
Cyl v/v seats replaced    Presure testing by 6 bar
Rocap dis-assemble /inspection    Fuel injection overhaul /feul planger replaced

2.FUEL PUMP OVERHAUL AND CONECTING ROD POLISHING

Feul pump disassembly/planger parts replaced
Pick up piston unit    Re-assembly
Bearing for Connecting rod is good condition
Connecting rod measurement and recorder,NO1/2/3/4/6 that was oversize ,but still in the wear limit ,we advice replace the connecting rod in the future。NO 5 connecting rod replaced new one
polishing    Aft polishing measurement
Checked the surface aft polishing    Piston head measurement
Piston head cleaned    Aft measurement re-assemble
Crank pin measurement is good condition ,surface is good 
Liner measurement is good condition
Liner picked up and O-ring replaced for  cyl No 1/3/4/5/6

3.MAIN BEARING INSPECTION AND REPLACE

Main bearing and trust washer inspection and not good condition ,replaced new one for all cyl
Main bearing inspection that replaced new parts for 7 pcs
new parts renewal 

4.ASSEMBLY UNIT AND RUNNING TEST

Swing arm inspection that NO4 &NO 5 was damaged
Cam shaft inspection is good condition

5.RE ASSEMBLY UNIT

Fuel pump assembly    Liner o-ring replaced complate
Piston unit install    Cover install
Timing adjustment    Assembly complate
Running test by 5mins /20mins/1hour for checking