Transcript 140T Crane Preventive Maintenance & Inspection

140T Crane Maintenance
Issues,AMC, Spares Mgt,Trouble
Shooting-Field (Open Line)
Objective
• Name of components required regular
attention.
• List instructions for maintenance of these
items.
• Know about Annual Maintenance Contract.
• List the spares
• Trouble shooting areas
Introduction
• To avoid Break Down of Crane
– Regular cleaning
– Continual inspection
– Maintain scheduled preventive maintenance.
Maintenance schedule
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Daily
Monthly or after 125 hours
Half-yearly or every 750 hours.
Yearly or every 1,500 hours.
Every Two years or every 3000 hours.
POH schedule after 8 years.
MLR after 6 years of Ist POH
COMPONENTS REQUIRED REGULAR
ATTENTION
Main Diesel Engine Photo
Main Diesel Engine
• Check
– Lube oil pressure & temp. gauge,
– Fuel indicator
– Engine RPM
– Battery charging ammeter
– Water Temp. gauge
– Abnormal noise during running
– Air intake system
Engine-Mtc
• Check
– Lube oil filter element
– Fuel oil filter element
– Check oil filter pollution indicator
– V belts used in engine
• Found any fault,call OEM’s representative.
• POH done after 8 years by Cummins India Ltd.
Filter Photo
Air Filter
Hydraulic Filter
Diesel Engine-AMC
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Done by consignee with Cummins India Ltd
Representative of OEM attended quarterly
Check all datas as shown
Replace the item if required with its cost.
Battery
• Check
– Visually,
– Clean & dry battery cover after 6 months
– Clean cable conection terminals
– Electrolyte level
– Battery charging condition
• Change battery after Two years.
Hoses
• Visual & functional check
– End fitting,
– Wearing of flange
– Rubber portion.
• Replace if any leakage found
• Must change item in every POH
Hydraulic Tank
• Check
– Visually,
– oil level,
– breather filter
– Filter element
– Oil contamination in Lab after every six months
• Change Hyd. Oil after Two years
Hydraulic & Pneumatic Fittings
• Check
– Visual & functional
– End connections
– Any crack/loose/leakage
• Replace if required
Slewing Ring Photo
Slewing Gear Box/Slewing Ring
• Slewing Gear Box
– Running noise,
– Oil level,
– Bolt connections
• Pinion & Gear wheel
– Clean & grease
• Roller Bearing slewing ring
– Lubricate through grease gun.
– Check stud connections.
Air Pressure System
• Air Pressure Tank
– Visual check
– Drain water after 6 months
• Air Brake Cylinders
– Functional Test
– Clean & overwhaul if required
• Air pr. Fine filter
– Check filter element
– Change if required.
Wire Rope Defects
Broken Wires
Waviness
Bird cage
Wire Rope Defects
Loop deformation
Loose wires
Nodes
Wire Rope Defects
Thining of the rope
Kinks
Flat area
Survey of Removal of Wire Rope
• Broken wires
– 5% of the total no. of wires in the rope in 10Xd
– 5 broken wires between two adjacent strands
within a length of 10Xd
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15% reduction in diameter
Corrosion
Damaged due to heat
Rope deformation as shown
Lifting Tackles-mtc
• Mark strength wise for proper use
• Check each & every link of the chain.
• Check wire rope slings
– String(any cut)
– Rope deformations(bulging,twisting)
– Corrosion
• Check hook deformation & joint fittings
• Replace on condition basis
Lifting Tackles Photo
Nylon Items
• Nylon pulleys
– Edge damage
– Bearing damage
– Groove worn out
• Roller,Gliding plate
– Worn out
• Replace
SLI Items
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Main Hook Load Sensor
Boom Angle Sensor
Slew Angle Sensor
Aux. Hook Load Sensor
Display Board
Micro Processor
Chips(X1 Card)
SLI Items
SLI System-mtc
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Do not bypass SLI system during operation.
Protect cards from dusts
Check functional test
If any error found,call OEM representatives.
OEM-M/S PAT, Germany
– M/S Mechanica, Pune.
– M/S Hytec Micro Measurement,Delhi
SLI-AMC
Suspension coil & disc spring
• Springs used in secondary suspension
– Coil
– Disc
• Change if required
• Suppliers
– M/S G.D. Spring,KKK for Coil Spring.
– M/S Gala Precision Technology Ltd,Thane for Disc
Service Engineer Group
• Function
– Attend the crane at division & check crane in
running condition.
– If any problem ocurrs, sort out it.
– Check records for maintaining the crane as per
RDSO mannual
• Staff-One engineer+ Four technicians.
POH & MLR
EXISTING
REVISED
Schedule
Time period
Cumulative life
1st POH
8 yrs
8 yrs
MLR
6 yrs
14 yrs
2nd POH
6 yrs
20 yrs
Condemn
6 yrs
26 yrs
1st POH
8 yrs
8 yrs
2nd POH
6 yrs
14 yrs
MLR
6 yrs
20 yrs
3rd POH
8 yrs
28 yrs
Condemn
8 yrs
36 yrs
Must Change Items during POH
• Pneu.Hoses of U/C,Nylon pad,Owa seal,Oring,Brake shoes,Pins,Bushes,Hyd.
Gauges,Indicating lamps,Electric wiring of SLI
circuit & lighting,Coil & Disc springs,Engine
control circuit,Sensors,Hyd. & Pneu. Filter
elements,HP-90 gear oil,HLP-68 Hyd.
Oil,15W40 Engine lub. Oil,Radiator coolant.
• POH of Engine by CIL,Pune
Condition Basis During POH
• Solenoidvalves, Major
pins,Pumps,Motors,Cylinders(Propping,Outrig
ger,CWT,Axle blocking,DUV),Pressure
Switch,Rotors,Hyd. Hoses,Wire
Ropes,PTO,Lamina brakes,Bearings in gear
boxes,Wheels & all other components.
Must Change Items During MLR
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All pneu. & hyd. Hoses
All wire ropes
All hyd. Pumps,motors,cylinders & valves
SLI Systems
Wheel disc,Major pins,Solenoid valves
Coil & Disc springs,Engine control units
Elec. Wiring,All filter elements,All hyd. Oils
POH of Engine by CIL,Pune
Spares-Category
• Category ‘A’ High value items
– One crane set for each design
• Category ‘B’ Regular spares
– 20% of total population of each design
• Category ‘C’ Items for pneumatic fittings
– One crane set to be stored by Depot
Spares Kept at Depot
• Category ‘C’ Pneumatic items(KNORR make)
– Oil filter,Filter element
– VEBEO fittings
– Hyd. & Pneu. Hoses
– Bolster springs
– Snubber springs
– Seal kits
Spares Kept at JMP Workshop
• Category ‘A’ items
– Hyd. Pumps(axial piston),Motors
– Pump Distribution gear box,Control Block
– Valve plate,Oil air cooler
– Wire Ropes-Main,Derrick,Aux.
– Bearings,Hook Block Assly
– Hoist & Gear Boxes,Hyd. Cylinders
– SLI Items,Brake Cylinders,Wire Rope Slings
Category ‘B’ Items
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Pneumatic(valves,gauges,filters)
Hyd.(valves,gear pumps,gear motors,filters)
Differential Cylinders,Seal Kits
Hydraulic & Pneumatic Hoses
Electrical Items
VEBEO fittings,Parker fittings
Rope Pulleys