Capítulo 4: Resultado creativo de la investigación: que incluye una reseña sobre el libro- libro-arte como una de las alternativas plásticas de construcción de imagen, algunos referentes
1 UNA MIRADA PANORÁMICA . CONFESIONES
1.8 LA HISTORIA DE VIDA
104-5
P90451 47 Wire guide
P90451 59 Lifting attachment - connecting rod P90451 72 Chain for suspending piston
P90451 96 Bracket for support, Crosshead P90451 106 Bracket for support, Crosshead P90461 Connecting Rod - Hydraulic Tools P90464 Crosshead - Hydraulic Tools
P91351 10 Hydraulic pump, pneumatically operated P91351 46 Hose with unions (1500 mm), complete P91351 58 Hose with unions (3000 mm), complete P91351 117 5-way distributor block, complete P91356 Lifting Tools, Etc.
P91366 58 Feeler gauge P91368 Working Platforms
904-5.2
MAN B&W Diesel Dismantling
M904050237D03M904050237D02M904050237D01
D1302 D0407
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3.
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1. Suspend the piston rod and dismount the crosshead bearing cap. See Procedure 904-1.2.
2. Suspend two tackles from the two lifting brackets at the sides of the frame box.
Mount the wire guide in the top of the crankcase doorway.
3. Turn the crank to TDC.
Dismantle the crankpin bearing cap, and remove it from the engine. See Procedure 904-4.2.
Mount the four support brackets for guide shoes on the crosshead guides.
MAN B&W Diesel
4. Mount the lifting attachments for fixing the connecting rod on the head of the connect-ing rod.
Use the tackles fastened to lifting brackets A and B on the frame box wall, and attach the tackle hooks to the mentioned lifting at-tachments on the connecting rod.
Haul the tackles tight.
Also mount a lifting attachment in the crankpin end of the connecting rod, on the exhaust side.
Carefully turn the crank down towards the exhaust side, until the crosshead shoes rest on the supports.
Adjust the support brackets to the guide shoes so that the weight of the crosshead is evenly distributed on the four supports.
5. Turn the crankthrow towards BDC while
“following” with the tackles, thus continu-ously supporting the connecting rod.
6. Turn the crankthrow to 90° before BDC.
Remove the four studs from the connecting rod.
Shift the hook of the tackle attached to lift-ing bracket B from the liftlift-ing attachment on the lowermost side of the connecting rod to the lifting attachment on the uppermost side.
4.
5.
904-5.2
MAN B&W Diesel Dismantling
M904050237D09
7. By means of the tackle from lifting bracket A, tilt the connecting rod towards the cam-shaft side until the connecting rod is lean-ing out of the doorway.
Attach a tackle to lifting bracket C on the frame box wall and connect the tackle hook to the lifting attachment at the lower end of the connecting rod.
Turn the crank carefully upwards while
“following” with the tackles, guiding the head of the connecting rod out of the doorway.
8. Attach a tackle to the gallery-mounted lift-ing bracket E, and hook on to the liftlift-ing at-tachment on the connecting rod.
Shift the tackles from one lifting bracket/at-tachment to the other, as required.
Remove the floor chequer plate for the per-taining cylinder.
9. Place a plated wire rope round the con-necting rod, hook on the engine room crane and haul tight.
Continue turning upwards till about 30° af-ter TDC, while “following” with the tackles and the engine room crane.
Lift the connecting rod out of the engine using the engine room crane and the tack-les.
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8.
9.
MAN B&W Diesel
1. Equip the connecting rod with the same lift-ing attachments as mentioned under dis-mantling.
Turn the crank to a position about 30° past TDC on the camshaft side.
Apply clean lubricating oil to the crankpin bearing shell and journal.
2. Lift the connecting rod carefully into the crankcase by alternate use of the engine room crane and the tackles attached to lift-ing brackets A and B.
Attach a tackle to bracket E and the upper end of the connecting rod.
3. When the end of the connecting rod rests on the crankpin journal, attach a tackle to bracket C and the lower end of the connec-ting rod.
4. Turn the crankthrow towards BDC, past TDC, while ‘following’ with the tackles.
Lower the engine room crane and remove the strap around the connecting rod.
Shift tackle B from the lower end to the up-per end of the connecting rod.
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2.
3.
904-5.4
MAN B&W Diesel Mounting
M904050237M07M904050237M06
5. Turn the crankthrow to 90° before BDC, and use the tackles to raise the connecting rod to an upright position.
Shift tackle A from the lower end to the top of the connecting rod.
Remove the tackle at E.
Shift tackle B from the lifting attachment on one side to the other side of the connect-ing rod.
Remove the tackle at C.
Remove the lifting attachment at the lower end of the connecting rod.
6. Screw the studs into the connecting rod.
Using the stud setter and a torque wrench, tighten the studs to the torque stated in Data.
Lubricate the crosshead bearing shell and journal.
7. Turn the crankthrow towards TDC while
‘following’ with the tackles, carefully land the crosshead on the connecting rod.
Note!
Take care that the studs do not damage the crosshead bearing journal.
5.
6.
7.
MAN B&W Diesel Mounting
8. When the crank is in TDC, mount the crankpin bearing cap.
See Procedure 904-4.4.
Turn to BDC and mount the crosshead bearing cap and the piston.
See Procedure 904-1.4.
9. Remove the tackles and lifting attachments.
10. Turn the crosshead to BDC.
Tighten all four crosshead bearing cap nuts simultaneously. See Data.
For use of hydraulic jacks, see Procedure 913-1.
Mount the thrust pieces for axial guidance of the connecting rod, and tighten to the specified torque. See Data.
M904050237M08
D0448
M904050237M09M904050237M10
D1301 D0416
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