Brake master cylinder leakage

Niva 4x4 / Нивовод нивоводу — брат / World Wide Niva

alexauto

Name: Alex
Reg.: 11/6/2022
Topics / Posts: 4 / 5
From: Greece
Age: 35
Car: Nina 1700 mpfi 2003

2/3/2024, 8:56 PM +03

Hello guys.

I found that the Brake master cylinder has a leakage.
(Lada Niva 1.7 mpfi 2003)
The brake fluid is leaking at the joint between master cylinder and vacuum unit.

Do you think that is necessary to replace both master cylinder and vacuum unit or only the master cylinder?

Available choice for master cylinder are TRW, Ferodo and the original one (grey box withe orange strip). Which one should i choose?

Unfortunately, vacuum unit is available only from Volga Sprint manufactures.

joha

Name: Евгений
Reg.: 7/3/2022
Posts: 1136
From: Ярославль
Age: 55
Car: ВАЗ-2131, 2010

2/3/2024, 9:24 PM +03

only the master cylinder

Cossack

Reg.: 7/27/2009
Topics / Posts: 2 / 959
From: Москва, дер. Петрово (Калужская обл.) был - Торонто, Канада
Age: 54
Car: Гранта лифтбэк '24, был - Нива 21214 моноинжектор, 96 г., в Канаду шла под маркой Cossack


O°

2/4/2024, 1:31 AM +03

Or the front seal of the master cylinder - typically it fails first. You can buy the rebuild kit (4 rubber seals) for the mater cylinder for Niva or Samara.
For certain no need to replace the brake booster if it works OK.

Отмеряй микрометром, отмечай мелом, отрубай топором

alexauto

Name: Alex
Reg.: 11/6/2022
Topics / Posts: 4 / 5
From: Greece
Age: 35
Car: Nina 1700 mpfi 2003

2/4/2024, 12:20 PM +03

Thank you guys.

Niva 4x4 / Нивовод нивоводу — брат / World Wide Niva / Brake master cylinder leakage