CAR Brake servo

Vacuum brake booster: common defects and their signs

  1. Depressurization.
    • Engine operation becomes unstable.
    • Hissing from the side of the component is heard during braking.
    • Engine vibrations at idle are increased.
    • Leakages of braking fluid are visible during visual inspection of the component.
  2. Destruction of diaphragm or wear of valves rubber.
    • Handling of the vehicle worsened.
    • Braking efficiency decreased.
    • Whistling is heard during braking.
  3. Fasteners loosening.
    • Knocking is heard from the side of the component during hard braking.
    • The brake pedal pushes back.

How to repair or replace vacuum brake booster?

Sometimes the part can be repaired. However, only professionals can estimate wear degree or allocate damages, so you need to apply to a service station for component diagnostics.

In most cases it is practical to replace the component. Common recommendations for single-handed replacement are the following:

  1. Find a pull rod of the booster under the steering shaft and disconnect it from the brake pedal.
  2. Then disconnect the brake master cylinder from the brake booster.
  3. Disconnect the vacuum hose and the back valve of the booster.
  4. Then demount the defective part, install a new one and perform assembling of all elements.

Peculiarities of replacement process may vary for different car models, so you need to look for the full list of recommendations in vehicle technical documentation.

Brake servo Information

Brake servo: Bestsellers

-19%
ATE Seal, vacuum hose connector pipe
Article № : 03.7718-7203.1
Read the product details
Buy ATE 03.7718-7203.1
£ 3,52**
£ 2,85
incl. 20% VAT, Shipping
  • Diameter [mm]: 28,0
  • Inner diameter [mm]: 13,0
  • Thickness [mm]: 9,5
  • Condition: New

OEM-Number

34 33 6 765 316

11 48 7 45

54 57 0 9

In stock
Read the product details
-19%
TRW Brake Booster
Article № : PSA118
Read the product details
Buy TRW PSA118
£ 97,94**
£ 79,33
incl. 20% VAT, Shipping
  • Manufacturer Restriction: TRW
  • Diameter [in]: 10
  • Condition: New

OEM-Number

93 18 9 714

55 44 0 10

In stock
Read the product details
-19%
ATE Brake Booster
Article № : 03.7863-2002.4
Read the product details
Buy ATE 03.7863-2002.4
£ 180,52**
£ 146,22
incl. 20% VAT, Shipping
  • Parameter: T52/5
  • Diameter [in]: 10
  • Operating Mode: Pneumatic
  • Condition: New

OEM-Number

77 01 2 067 91

77 01 2 067 90

In stock
Read the product details
-19%
TRW Brake Booster
Article № : PSA526
Read the product details
Buy TRW PSA526
£ 150,29**
£ 121,73
incl. 20% VAT, Shipping
  • Manufacturer Restriction: TRW
  • Diameter [in]: 10
  • Condition: New

OEM-Number

91 93 2 26

54 40 3 9

54 41 6 3

In stock
Read the product details
-19%
ATE Brake Booster
Article № : 03.7760-8103.4
Read the product details
Buy ATE 03.7760-8103.4
£ 211,08**
£ 170,97
incl. 20% VAT, Shipping
  • Parameter: T52
  • Diameter [in]: 10
  • Operating Mode: Pneumatic
  • Condition: New

OEM-Number

14 77 8 14

6M 51 2 005 BB

13 24 2 21

In stock
Read the product details
-19%
BOSCH Repair Kit, brake booster
Article № : 0 204 120 018
Read the product details
Buy BOSCH 0 204 120 018
£ 8,02**
£ 6,50
incl. 20% VAT, Shipping
  • Condition: New

OEM-Number

45 99 1 5

27 05 9 6

95 61 1 063

In stock
Read the product details
-19%
TRW Brake Booster
Article № : PSA743
Read the product details
Buy TRW PSA743
£ 159,83**
£ 129,46
incl. 20% VAT, Shipping
  • Manufacturer Restriction: TRW
  • Diameter [in]: 8 / 9
  • Condition: New

OEM-Number

8E 06 1 210 7J

8E 06 1 210 7E

4B 36 1 210 7

In stock
Read the product details
-19%
AISIN Brake Booster
Article № : BBS-005
Read the product details
Buy AISIN BBS-005
£ 83,12**
£ 67,33
incl. 20% VAT, Shipping
  • Condition: New

OEM-Number

51 30 0 60A 60

In stock
Read the product details