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Crankcase Inspection Safety & Procedure MMD Favourite Questions

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9/22/2018 Crankcase Inspection Safety & Procedure MMD Favourite Quetion - GENERAL MARINE TOPICS ASKED BY SURVEYOR &

R & EXA…

Rank: Member Safety Precautions carried Out before Crankcase Inspection:

Shutoff of main air staring valve and air bottle main valve.
Groups: Registered
Joined:
Open indicator cocks and engage turning gear.
10/17/2013(UTC) Ensure engine has been tuned for at least half an hour before stopping lube oil pump and
Posts: 25 cross head lubrication pump.
Stop lube oil pumps and cross head oil pump and place the circuit breakers in off position.
Was thanked: 3 time(s)
Post notice “Don’t start - Men at work”.
in 3 post(s) Inform duty officer for propeller clearance.
Open crankcase door and ventilate properly.
Wear safety gear; e.g. helmet, boots, raincoat, gloves etc.
Use safety lamps, torches and tools.
All pockets should be emptied of contents and all tools taken inside must to be accounted
for.
One responsible person must stand outside.

Procedure to be carried out during Crankcase Inspection:

Firstly check oil condition for any smell, discoloration or degradation.


Turn the engine to BDC and start checking from under stuffing box area for any sign of
black oil, an indication of stuffing box leaking.
Check the piston rod surface for scoring marks and roughness.
Check piston palm bolts and locking device for slackness and fretting.
Check the guide and guide shoe bearing general condition and the area around frame
where guide is attached for any visible cracks.
Check that the guide shoe end cover bolts are in place and not slack.
Check cross head bearing general condition.
Evaluate top and bottom end of connecting rod bolt, nut and locking device for slackness,
signs of fretting, etc.
Check for sliding of bottom end bearing (axial movement) or floating of connecting rod.
Check for slip of web and journal by checking the reference mark.
Check web in the area of stress concentration and check tie bolt (bottom side).
Check cross grider, area around main bearing and bearing keep for sign of cracks and
check around main bearing.
All bearings must be checked for silvery color (indicates bearing wiping).
Check the surroundings of the oil pan area of all units for any sludge deposits, bearing
metal pieces, etc.
Check crank case relief door- wire mesh (should be wet), spring tension, sealing ring
condition, etc.
Check the teeth of transmission gear for sign of wear.
Check chain drive for tightness.
Use oil mist detector on sampling pipe to check for clear passage.
Clear all the foreign materials from the crank case, and make sure all tools are accounted
for.
Start lube oil pump and cross head lubricating pump and check for the oil flow and
distribution.
Check crankcase door sealing condition and close the crankcase door.
Inform chief engineer (for satisfactory checking of crank case) and duty officer.

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1 user thanked madhutitti (/default.aspx?g=profile&u=841) on 10/26/2014(UTC)


chiefengineer for
this useful post.

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