LAMBORGHINI MURCIÉLAGO 2009 Service Repair Manual

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Adjustment rear differential&$87,21 • $OORSHUDWLRQVPXVWEHFDUULHGRXWZLWKWKHXWPRVWFDUHWRDYRLGLQMXU\WRSHRSOH
•  6SHFL¿FWRROVDUHUHTXLUHGIRUFHUWDLQSURFHGXUHV7KHXVHRIWKHVHWRROVLVHVVHQWLDOWRHQVXUH
safe operation.
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•  :KHQHPSOR\LQJFKHPLFDOSURGXFWVVFUXSXORXVO\IROORZWKHLQVWUXFWLRQVVKRZQRQWKHVDIHW\
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:$51,1* • $OORSHUDWLRQVPXVWEHFDUULHGRXWZLWKWKHXWPRVWFDUHWRDYRLGGDPDJHWRFRPSRQHQWV
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•  'XULQJ WKH GLVDVVHPEO\ FKHFN WKDW WKH HOHPHQWV KDYH WKH FRUUHFW UHIHUHQFH PDUNV DV
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•  'XULQJWKHUHDVVHPEO\UHVSHFWWKHWLJKWHQLQJWRUTXHVDQGWKHDGMXVWPHQWGDWD
•  5HSODFHJDVNHWVVHDOVVQDSULQJVVDIHW\SODWHVVHOIORFNLQJQXWVFDXONHGHGJHQXWVDQGDOO
other worn out parts during each reassembly.
•  8VH /RFWLWH$UH[RQV  VHDODQW RU /RFWLWH$UH[RQV  VHDODQW DV LQVWUXFWHG GXULQJ WKH
ressembly;
•  8VH /RFWLWH$UH[RQV PHGLXP WKUHDG VHDODQW $ RU /RFWLWH$UH[RQV VWURQJ WKUHDG VHDODQW
52A70 during the ressembly.

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WKH ULJKW WR PDNH XSGDWHV DQG PRGL¿FDWLRQV 7KH IROORZLQJ DUH SURKLELWHG UHSULQWLQJ UHSURGXFWLRQIRUZDUGLQJ WR XQDXWKRUL]HG SHRSOH DQGRU WKLUG SDUWLHV DQG WUDQVODWLRQ LQFOXGLQJ SDUWLDO ZLWKRXW
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Check the correct bearing pre-load as follows:
•  LQVWDOODVXLWDEOHWRROIRUPHDVXULQJWKHUROOLQJWRUTXHRQDQD[OHVKDIWÀDQJH
7KH SODQHWDU\ JHDU VHW GRHV QRW QHHG WR EH IDVWHQHG WKDQNV WR WKH LQWULQVLF FKDUDFWHULVWLFV RI WKLV differential.
• Check that the rolling torque (ignoring the pickup one) is within the prescribed values (050900)

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WKH ULJKW WR PDNH XSGDWHV DQG PRGL¿FDWLRQV 7KH IROORZLQJ DUH SURKLELWHG UHSULQWLQJ UHSURGXFWLRQIRUZDUGLQJ WR XQDXWKRUL]HG SHRSOH DQGRU WKLUG SDUWLHV DQG WUDQVODWLRQ LQFOXGLQJ SDUWLDO ZLWKRXW
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If this is not so operate on adjusting shim ( $)LJ) as follows:
• to increase torque o decrease the value of shim A;
• to decrease torque o LQFUHDVHWKHYDOXHRIVKLP$
•  5HPRYHWKHGLIIHUHQWLDOÀDQJHVDQGWKHGLIIHUHQWLDODVVHPEO\DWWKHHQGRIWKHVHRSHUDWLRQV

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Install both pinion roller bearing outer rings to the differential carrier by means of a suitable pad.
• Install on the pinion:
• tentative adjustment shim ( ')LJ): sD=1,5 mm;
• the taper roller bearing ( $)LJ E\PHDQVRIDVXLWDEOHSDG
• the tentative spacer ( &)LJ V& PP WRWDO 

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Check the correct bearing pre-load as follows: •
 ,QVWDOODVXLWDEOHWRROIRUPHDVXULQJWKHUROOLQJWRUTXHRQWKHSLQLRQVSOLQHGVKDIW
 7KHSODQHWDU\JHDUVHWGRHVQRWQHHGWREHIDVWHQHGWKDQNVWRWKHLQWULQVLFFKDUDFWHULVWLFVRIWKLV
differential.
•  &KHFNWKDWWKHUROOLQJWRUTXHLJQRULQJWKHSLFNXSRQHLVZLWKLQWKHSUHVFULEHGYDOXHV
 $UROOLQJWRUTXHYDOXHWHQGLQJWRZDUGVWKHXSSHUWROHUDQFHOLPLWVKRXOGEHSUHIHUUHG
•  ,IQHFHVVDU\DGMXVWWKHVSDFHU &)LJ) as follows:
• to increase torque odecrease the thickness of spacer C;
• to decrease torque o LQFUHDVHWKHWKLFNQHVVRIVSDFHU&

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127(
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• Install P/N 62395054 special tool in the hub seats and check that the measure is within the prescribed
values:
  GLPHQVLRQ; ± 0.03 mm

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In case the value in not within the prescribed values, adjust the adjusting shim ( ')LJ) as follows:
• to increase dimension X o decrease the value of shim D;
• to decrease dimension X o increase the value of shim D;
•  FKHFNGLPHQVLRQ;DJDLQ
7LJKWHQ WKH SLQLRQ PRXQWLQJ ULQJ QXW WR WKH SUHVFULEHG WLJKWHQLQJ WRUTXH  1P ZLWK 0RO\FRWH  ZKHQHYHUGLPHQVLRQ;LVPHDVXUHG

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• ,QVWDOOWKHKXEVDQGWKHGLIIHUHQWLDO
•  ,QVWDOO WKH SUHYLRXVO\ LGHQWL¿HG DGMXVWLQJ VKLPV$ DQG % SRVLWLRQ WKH GLIIHUHQWLDO DVVHPEO\  LQVWDOO WKH KXE RQ
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• Check the correct pinion-crown clearance as follows:
•  FKHFNWKDWWKHYDOXHLVZLWKLQWKHSUHVFULEHGYDOXHVE\PHDQVRIDGLDOJDXJH
  SLQLRQFURZQFOHDUDQFH±PP

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If this is not so, operate on adjusting shims as follows:

to decrease the clearance o decrease shim ( %)LJ) and increase shim ( $)LJ DFFRUGLQJO\
• to increase the clearance o increase shim ( %)LJ) and decrease shim ( $)LJ DFFRUGLQJO\
•  5HPRYHWKHÀDQJHVDWWKHHQGRIWKHRSHUDWLRQ

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Rear differential disassembly&$87,21
•  $OORSHUDWLRQVPXVWEHFDUULHGRXWZLWKWKHXWPRVWFDUHWRDYRLGLQMXU\WRSHRSOH
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safe operation.
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¿WWLQJOLJKWDOOR\SDUWVE\WDSSLQJZLWKDUHVLQRUDZRRGHQKDPPHU

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