SL2007-474.pdf

MAN Diesel

MAN Diesel A/S • Denmark

Service Letter

SL07-474/JJP

March 2007

Lifting Tool for Crosshead Bearing Cap

80-98MC/MC-C and ME/ME-C Engines

Action Code: IMMEDIATELY

Dear Sirs

Recently one of our service engineers experienced a broken lifting tool for a

crosshead bearing cap.

This happened in connection with overhaul of a crosshead bearing on a 98-bore

engine. An extension stud for a lifting eyebolt broke during lift of a crosshead bearing

cap. There were no personnel injuries in connection with the incident, which resulted

only in minor damage to one of the guide bars.

This tool has been specified for more than 12 years, and this is the first incident of this

kind. The broken extension stud has been investigated and the following conclusion

of the investigation was made:

The stud has not been made from adequate material and, equally important,

it appears not to have been machined as specified. One important fillet was

smaller than specified. Furthermore, the thread tap on the extension tool

seems to have been pre-bent from an earlier lift.

Therefore, to avoid accidents, we recommend engine crews and other service

personnel to follow the enclosed safety instruction, S904, regarding lifting tools and

handling of crosshead bearing caps.

HEAD OFFICE (& postal address)

MAN Diesel A/S

Teglholmsgade 41

2450 Copenhagen SV

Denmark

Phone: +45 33 85 11 00

Fax: +45 33 85 10 30

manbw@dk.manbw.com

www.manbw.com

PrimeServ

Teglholmsgade 41

2450 Copenhagen SV

Denmark

Phone: +45 33 85 11 00

Fax: +45 33 85 10 49

diesel-service@dk.manbw.com

PRODUCTION

Teglholmsgade 35

2450 Copenhagen SV

Denmark

Phone: +45 33 85 11 00

Fax: +45 33 85 10 17

manufacturing/cph@dk.manbw.com

FORWARDING & RECEIVING MAN Diesel A/S

Teglholmsgade 35 Denmark

2450 Copenhagen SV Reg. No.: 39661314

Denmark

Phone: +45 33 85 11 00

Fax: +45 33 85 10 16

MAN Diesel – a member of the MAN Group

#ROSSHEADæ"EARINGæ#APæ(ANDLING

-!.æ"7

(ANDLINGæOFæCROSSHEADæBEARINGæCAPS

)NæCONNECTIONæWITHæINSPECTIONæANDæOVERHAULæOFæ

THEæCROSSHEADæBEARINGSæWHEREæITæISæNECESSARYæ

TOæLIFTæTHEæBEARINGæCAPæORæTOæREMOVEæTHEæBEARINGæ

CAPæFROMæTHEæCRANKCASINGæITæSHOULDæBEæCARRIEDæ

OUTæACCORDINGæTOæTHISæSAFETYæINSTRUCTION

æ )NSPECTæTHEæLIFTINGæTOOLS

#HECKæTHATæALLæNECESSARYæLIFTINGæTOOLSæAREæINæ

PROPERæCONDITION

%XTENSIONæSTUDSæORæEYEBOLTSæWHICHæSHOWæ

SIGNSæOFæOVERLOADæORæMISUSEæMUSTæ./4æBEæ

USEDæ,IFTINGæCOMPONENTSæWHICHæSHOWSæ

SIGNSæOFæBENDEDæTHREADSæORæCRACKSæMUSTæBEæ

DISCARDEDæANDæNEWæPARTSæMUSTæBEæORDERED

7HENæREFERRINGæTOæTHISæPAGEæPLEASEæQUOTEæ3)NSTRUCTIONææ3æææ%DITIONææ

0AGEææ

#ROSSHEADæ"EARINGæ#APæ(ANDLING

-!.æ"7

æ 7HENælTTINGæTHEæEXTENSIONæSTUDSæANDæEYE

BOLTSæMAKEæSUREæTOæTIGHTENæTOæFACEæCONTACT

#HECKæWITHæAææMMæFEELERæGAUGEæTHATæ

THEREæISæNOæCLEARANCEæBETWEENæTHEæLIFTINGæ

TOOLSæANDæTHEæFACE

æ 4HEæBEARINGæCAPæMUSTæONLYæBEæLIFTEDæINæTWOæ

LIFTINGæPOINTSæATæAæTIME

&ORæEACHæLIFTINGæPOINTæTHEæLIFTINGæANGLEæMUSTæ

NOTæEXCEEDæªæFROMæVERTICAL

æ 7HENæLIFTINGæTHEæCROSSHEADæBEARINGæCAPæDOæ

NOTæTILTæTHEæBEARINGæCAPæMOREæTHANæªæTOæ

HORIZONTAL

-AXæ /

0AGEææ

7HENæREFERRINGæTOæTHISæPAGEæPLEASEæQUOTEæ3)NSTRUCTIONææ3æææ%DITIONææ

#ROSSHEADæ"EARINGæ#APæ(ANDLING

-!.æ"7

æ 4HEæBEARINGæCAPæMUSTæ./4æBEæLIFTEDæINæONLYæ

ONEæLIFTINGæPOINT

æ $Oæ./4æPULLæINæDIFFERENTæDIRECTIONSæSOæTHEæ

WEIGHTæOFæTHEæBEARINGæCAPæISæONLYæTAKENæ

FROMæONEæLIFTINGæPOINT

7HENæREFERRINGæTOæTHISæPAGEæPLEASEæQUOTEæ3)NSTRUCTIONææ3æææ%DITIONææ

0AGEææ

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: