overheating LAMBORGHINI MURCIÉLAGO 2009 Service Repair Manual
Page 371 of 1173
4
L824 02 51 00
Fig.4
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
( [ K D X V W * D V 7 H P S H U D W X U H & R Q W U R O ' H Y L F H
The exhaust pipe coming out from the catalytic converter features a thermocouple to read the temperature. This
thermocouple generates a signal in proportion to the exhaust gas temperature and sends it to a special electronic
control unit that switches on the “CATALYST RIGHT” or “CATALYST LEFT” warning light to which it is connected.
If there is an abnormal temperature increase in one of the catalytic converters the control unit intervenes as follows:•For temperatures ranging between 945 and 960 °C the “CATALYST” warning light switches on intermittently:
, Q W K L V F D V H L W L V Q H F H V V D U \ W R V O R Z G R Z Q W K H F D U X Q W L O W K H Z D U Q L Q J O L J K W V Z L W F K H V R I I W K H Q ¿ Q G W K H F D X V H R I W K H exhaust system overheating.
• For temperatures over 960 °C the “CATALYST” warning light stays on permanently and the fuel is cut off to
W K H L Q M H F W R U V R I W K H U H O H Y D Q W F \ O L Q G H U E D Q N , Q W K L V F D V H L W L V Q H F H V V D U \ W R V W R S W K H F D U D Q G ¿ Q G W K H F D X V H R I W K H exhaust system overheating.
When temperature drops below 800°C, normal functions are reset.
7 K H ³ & $ 7 $ / < 6 7 ´ Z D U Q L Q J O L J K W V D U H W H V W H G D Q G V Z L W F K H G R Q I R U D E R X W W Z R V H F R Q G V Z K H Q H Y H U W K H L J Q L W L R Q N H \ L V W X U Q H G W R ³ 0 $ 5 & , $ ´
, I W K H Z D U Q L Q J O L J K W G R H V Q R W V Z L W F K R Q R U V W D \ V R Q D I W H U W K H L Q L W L D O F K H F N W K L V Z D U Q V W K H G U L Y H U W K D W R Q H R I W K H W Z R W H P S H U D W X U H F R Q W U R O V \ V W H P V L V Q R W Z R U N L Q J H I ¿ F L H Q W O \
Page 423 of 1173
2
L824 02 60 14
Fig.4 Fig.5 Fig.6
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
Fig.4 •Normal situation with very high ambient temperature (>43°C);
• 7 R R P X F K F R R O D Q W H [ W U D
• Condenser overheating;
• Air inside the A/C system;
• (V ) The compressor’s displacement control valve is defective;
• 2 E V W U X F W L R Q L Q W K H K L J K S U H V V X U H V L G H E H W Z H H Q F R P S U H V V R U D Q G F R Q G H Q V H U S L S H ¿ O W H U E X W D I W H U W K H S R L Q W Z K H U H
the high pressure is read.
Fig.5• Normal situation with very low ambient temperature (>5°C);
• 7 R R O L W W O H F R R O D Q W G H ¿ F L H Q F \ & K H F N I R U F R R O D Q W O H D N V
• (V ( [ S D Q V L R Q Y D O Y H V W X F N F O R V H G R U R E V W U X F W H G
• (V 2 E V W U X F W L R Q L Q W K H O R Z S U H V V X U H V L G H R U W K H K L J K S U H V V X U H V L G H E H W Z H H Q W K H ¿ O W H U D Q G H Y D S R U D W R U
• 2 E V W U X F W L R Q L Q W K H K L J K S U H V V X U H V L G H E H W Z H H Q F R P S U H V V R U D Q G F R Q G H Q V H U S L S H ¿ O W H U E X W D I W H U W K H S R L Q W Z K H U H
the high pressure is read.
• Compressor damaged.
Fig.6 • Compressor belt failure. Probable cause: pulleys not aligned;
• The compressor’s electric clutch slips or does not engage;
• Compressor damaged;
• (V ) The compressor’s displacement control valve is defective.
Page 547 of 1173
5
L824 04 09 09
Fig.8 Fig.9
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
• Check that the bearings are in good conditions, without traces of overheating and that the races, the turning
parts or the cages are not damaged
• & K H F N W K D W W K H W K U H D G L Q J D Q G W K H J U R R Y H G S U R ¿ O H V D U H Q R W G H Q W H G R U V F U D W F K H G
• Install the O-ring, the ball bearing and then the roller bearing outer ring on the hub ( Fig.8); repeat the operation
on the other hub.
• Install the ball bearing snap ring; repeat the operation on the other hub.
• Use a suitable pad to install the seal ( Fig.9); repeat the operation on the other hub.
Page 550 of 1173
8
L824 04 09 09
Fig.14
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
• Clean accurately all components.
• & K H F N W K D W W K H F U R Z Q W R R W K S U R ¿ O H V X U I D F H V D U H Q R W F U D F N H G R U V F U D W F K H G
• Check that the bearings are in good conditions, without traces of overheating and that the races, the turning
parts or the cages are not damaged.
• & K H F N W K D W W K H W K U H D G L Q J D Q G W K H J U R R Y H G S U R ¿ O H V D U H Q R W G H Q W H G R U V F U D W F K H G
Always replace the corresponding crown or the pinion after replacing the pinion or the crown.
• Introduce the crown on the planetary gear set and apply medium strength thread stop Loctite 52A43 and fasten
the mounting screws in a crossed order to the prescribed tightening torque:
crown screws: tightening torque (000800-6a)
• Use a suitable pad to install the roller bearing; repeat the operation on the other side.
Page 551 of 1173
9
L824 04 09 09
Fig.15 Fig.16
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
• Use a suitable puller to remove the inner bearing from the pinion. ( Fig.15).
• Clean accurately all components.
• & K H F N W K D W W K H S L Q L R Q W R R W K S U R ¿ O H V X U I D F H V D U H Q R W F U D F N H G R U V F U D W F K H G
• Check that the pinion bearings are in good conditions, without traces of overheating and that the races, the
turning parts or the cages are not damaged.
• Use a suitable pad to install the adjusting shim and the inner bearing on the pinion ( Fig.16).
Page 620 of 1173
1
L824 05 09 09
A
B
Fig.2
C
Fig.1
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
5 H D U G L I I H U H Q W L D O R Y H U K D X O
7 K H I R O O R Z L Q J S U R F H G X U H V F D Q R Q O \ E H F R P S O H W H O \ F D U U L H G R X W D I W H U U H P R Y L Q J W K H U H D U G L I I H U H Q W L D O I U R P W K H Y H K L F O H
• Remove the oil seal ( A-Fig.1).
• Remove the bearing ( B-Fig.1) by means of a pad; check for seizing and noise.
• Check the conditions of differential roller bearing outer ring ( C-Fig.2) without any traces of overheating or
G D P D J H L Q F D V H W K H E H D U L Q J U H T X L U H V U H S O D F H P H Q W Z D U P W K H À D Q J H D Q G U H P R Y H W K H R X W H U U L Q J E \ P H D Q V R I D
suitable puller.
Page 622 of 1173
3
L824 05 09 09
Fig.5
Fig.6 Fig.7
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
• Unscrew the mounting screws and remove the crown from the planetary gear set ( Fig.5).
The planetary gear set cannot be disassembled.
, Q F D V H R I I D L O X U H U H S O D F H W K H H Q W L U H F D U U L H U • Clean accurately all components.
• & K H F N W K D W W K H F U R Z Q W R R W K S U R ¿ O H V X U I D F H V D U H Q R W F U D F N H G R U V F U D W F K H G
• Check that the bearings are in good conditions, without traces of overheating and that the races, the turning
parts or the cages are not damaged.
• & K H F N W K D W W K H W K U H D G L Q J D Q G W K H J U R R Y H G S U R ¿ O H V D U H Q R W G H Q W H G R U V F U D W F K H G
Always replace the corresponding crown or the pinion after replacing the pinion or the crown.
• Introduce the crown on the planetary gear set and apply strong thread stop Loctite 52A70 and tighten the
mounting screws in a crossed order to the prescribed tightening torque ( Fig.6):
crown screws: W L J K W H Q L Q J W R U T X H D E
• Use a suitable pad to install the roller bearing ( Fig.7); repeat the operation on the other side.
Page 623 of 1173
4
L824 05 09 09
Fig.8
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
• Use a suitable puller to remove the inner bearing from the pinion ( Fig.8).
• Clean accurately all components.
• & K H F N W K D W W K H S L Q L R Q W R R W K S U R ¿ O H V X U I D F H V D U H Q R W F U D F N H G R U V F U D W F K H G
• Check that the pinion bearings are in good conditions, without traces of overheating and that the races, the
turning parts or the cages are not damaged.