brake booster LAMBORGHINI GALLARDO 2009 Workshop Manual
[x] Cancel search | Manufacturer: LAMBORGHINI, Model Year: 2009, Model line: GALLARDO, Model: LAMBORGHINI GALLARDO 2009Pages: 1659, PDF Size: 95.1 MB
Page 210 of 1659
11
L714 01 00 03
Fig.15
V
U
V
® 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 $
18. Disconnect the brake booster pipe ( U-Fig.15 W K D W M R L Q W V W K H S L S H V R Q W K H L Q W D N H P D Q L I R O G V U H P R Y L Q J W K H F O D P S V
( V-Fig.15 ).
Page 754 of 1659
13
L714 04 22 03
C2
3
3
C1
A
A ) L J
3 %
) L J
) L J
3
C
® 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 $
' , 6 $ 6 6 ( 0 % / , 1 * 7 + ( 5 ( $ 5 3 , 3 ( 6 ' L V D V V H P E O L Q J W K H 3 D Q G 3 S R Z H U V W H H U L Q J F L U F X L W S L S H V 3 U H O L P L Q D U \ R S H U D W L R Q V •Remove the entire engine (010003).
• Disassemble the engine cooling system rear pipe (012103).
• Empty the power steering circuit (042307).
' L V D V V H P E O L Q J W K H 3 D Q G 3 S R Z H U V W H H U L Q J F L U F X L W S L S H V
Position a suitable container to collect any residual power steering oil.
1. To disconnect the C1central delivery pipe connections and the C2central return pipe connections from the 3
rear delivery pipes and 3 rear return pipes, unscrew the respective nuts ( $ ) L J ).
2. Release the front part of the 3 return pipe from the clamp ( % ) L J ) securing it to the brake booster pipe.
3. Disconnect the front part from the rear part of the 3 return pipe ( & ) L J ).
Page 772 of 1659
14
L714 04 22 05
3 )
) L J
G
3
) L J
3
(
) L J
® 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 $
3. Connect the front part to the rear part of the 3 return pipe ( ( ) L J ).
4. Fasten the front part of the 3 return pipe to the clamp ( ) ) L J ) to secure it to the brake booster pipe.
5. Tighten the screw ( * ) L J ) securing the rear part of the 3 return pipe to the support bracket.
Page 871 of 1659
1
L714 06 12 03
Fig.1 Fig.2 Fig.3
A
D
C
G
B
E
F
® 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 $
$ ' L V D V V H P E O L Q J W K H E U D N H E R R V W H U 3 U H O L P L Q D U \ R S H U D W L R Q V • Disassemble the luggage compartment (080603).
Left hand drive• Disassemble the ABS control unit (061403).
Right hand drive
• Disassemble the air conveyor (volute) (026003).
' L V D V V H P E O L Q J W K H E U D N H E R R V W H U1. Empty the reservoir ( A-Fig.1)(061107) .
2. Disconnect the pipe ( B-Fig.2).
3. Disconnect the 2 pipes ( C-Fig.1).
4. Disconnect the wiring harness ( D-Fig.1).
5. 5 H O H D V H W K H ¿ [ L Q J S L Q E) and remove the pin locking the brake booster to the pedal cluster ( F-Fig.3).
6. Unscrew the brake booster’s 2 stay-bolts ( G-Fig.2).
7. ( [ W U D F W W K H E U D N H E R R V W H U
7 K L V V H F W L R Q H [ S O D L Q V K R Z W R G L V D V V H P E O H A)
% U D N H E R R V W H U
% % U D N H Y D F X X P S X P S
C) Vacuum sensor D) Disassembling the pan ( ' L V D V V H P E O L Q J W K H E U D N H Y D F X X P S L S H
Page 874 of 1659
4
L714 06 12 03
Fig.7
A
C
B
® 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 $
& ' L V D V V H P E O L Q J W K H Y D F X X P V H Q V R U 3 U H O L P L Q D U \ R S H U D W L R Q V • Disassemble the luggage compartment (080603).
' L V D V V H P E O L Q J W K H Y D F X X P V H Q V R U 1. Disconnect the sensor ( A-Fig.7) from the brake booster reservoir.
2. Remove the clamp ( B-Fig.7) and disconnect the pipe from the vacuum sensor.
3. Disconnect the connector ( C-Fig.7) from the pressure sensor.
4. Remove the vacuum sensor.
Page 876 of 1659
6
L714 06 12 03
Fig.10
B
C
Fig.11
A
® 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 $
( ' L V D V V H P E O L Q J W K H E U D N H Y D F X X P S L S H 3 U H O L P L Q D U \ R S H U D W L R Q V • Remove the entire engine (010003).
• ' L V D V V H P E O H W K H I U R Q W U H D U D Q G F H Q W U H À D W À R R U V (082503).
• Disassemble the propeller shaft (030703).
• Disassemble the front differential (040903).
• Disassemble the luggage compartment tray (080603).
• Disassemble the battery (091503).
• Disassemble the central cooling circuit pipes (012103).
' L V D V V H P E O L Q J W K H E U D N H Y D F X X P S L S H 1. Cut the clamp to disconnect the pipe ( A-Fig.10) from the brake vacuum pump.
2. Detach the two interlocking clamps ( B-Fig.10).
3. Disconnect the connection ( C-Fig.11) with the brake booster pipe.
Page 879 of 1659
1
L714 06 12 05
Fig.3
Fig.1 Fig.2
G
D
E
A
F
B
C
® 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 $
7 K L V V H F W L R Q H [ S O D L Q V K R Z W R D V V H P E O H A)
% U D N H % R R V W H U
% % U D N H Y D F X X P S X P S
C) Vacuum sensor
' $ V V H P E O L Q J W K H E U D N H R L O W D Q N
( $ V V H P E O L Q J W K H E U D N H Y D F X X P S L S H
$ $ V V H P E O L Q J W K H E U D N H E R R V W H U 1. Position the brake booster’s 2 stay-bolts ( A-Fig.1
).
2. , Q V H U W W K H S L Q D Q G F O L S R Q W K H ¿ [ L Q J S L Q % W R V H F X U H W K H E U D N H E R R V W H U W R W K H S H G D O F O X V W H U C-Fig.2).
3. & R Q Q H F W W K H Z L U L Q J K D U Q H V V D-Fig.3).
4. Connect the 2 pipes ( E-Fig.3).
5. Connect the pipe ( F-Fig.1).
6. Fill the reservoir ( G-Fig.3).
• $ V V H P E O H W K H O X J J D J H F R P S D U W P H Q W (080605).
Left hand drive • $ V V H P E O H W K H $ % 6 F R Q W U R O X Q L W (061405).
Right hand drive• $ V V H P E O H W K H D L U F R Q Y H \ R U Y R O X W H (026005).
% O H H G W K H E U D N H F L U F X L W
Page 882 of 1659
4
L714 06 12 05
Fig.7
C
A
B
® 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 $
& $ V V H P E O L Q J W K H Y D F X X P V H Q V R U 1.Connect the connector ( A-Fig.7) on the sensor.
2. 6 H F X U H W K H Y D F X X P V H Q V R U S L S H X V L Q J W K H F O D P S B-Fig.7).
3. Insert the sensor ( C-Fig.7) inside the brake booster reservoir.
• $ V V H P E O H W K H O X J J D J H F R P S D U W P H Q W (080605).
Page 883 of 1659
5
L714 06 12 05
Fig.8
A
B
C
Fig.9
E
F
D
® 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 $
D) Assembling the pan 1.Insert the pan ( A-Fig.8 W R W K H W Z R X Q L R Q V B-Fig.8) on the brake booster and clip into its slot ( C-Fig.8).
2. 7 L J K W H Q W K H V F U H Z (D-Fig.9).
3. Connect the connector (E-Fig.9).
4. Connect the pipe (F-Fig.9).
• $ V V H P E O H W K H O X J J D J H F R P S D U W P H Q W (080605).
% O H H G W K H E U D N H F L U F X L W
Page 885 of 1659
![LAMBORGHINI GALLARDO 2009 Workshop Manual 7
L714 06 12 05
Fig.12
E
Fig.13
F
G
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 \](/img/62/57186/w960_57186-884.png "LAMBORGHINI GALLARDO 2009 Workshop Manual 7
L714 06 12 05
Fig.12
E
Fig.13
F
G
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 \")
7
L714 06 12 05
Fig.12
E
Fig.13
F
G
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 $
5. Fasten the three clamps ( E-Fig.12 V H F X U L Q J W K H E U D N H Y D F X X P S X P S S L S H W R W K H F H Q W H U F R Q V R O H
6. Fasten the clamp ( F-Fig.13 V H F X U L Q J W K H S L S H W R W K H F K D V V L V Q H D U W K H G L I I H U H Q W L D O F R P S D U W P H Q W
7. Connect the connection ( G-Fig.14) with the brake booster pipe.