P42.50-2037-09
Shown on vehicle with code (30Y) Rear axle disk brake
1 Hydraulic unit
2 Brake fluid reservoir
3 Left brake line
4 Right brake line
FL Front left connection
FR Front right connection
RL Rear left connection
RR Rear right connection
5 Left brake hose
6 Right brake hose
7 Guide grommet
P15.20-2129-04
Shown on engine 639.9
8 Bolts (on engine 639.9)
N14/2 Glow output stage (on engine 639.9)
Modification notes
| Remove/install | ||
Danger! | Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes. | Pour brake fluid only into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | |
| Brake fluid notes | ||
| Notes on repairs to brake system | ||
1 | Remove air filter housing | Engines 134.9, 135.9 | |
Engine 122.9, 639.9 | |||
2.1 | Remove water collector | When removing the right brake line (4) on vehicle with engine 122.9 or 639.9 | |
3.1 | Remove brake fluid reservoir (2) | When removing the left brake line (3) from the vehicle with code (LHD) Left-hand drive vehicle | |
3.2 | Extract brake fluid from brake fluid reservoir (2) | When removing the right brake line (4) from the vehicle with code (RHD) Right-hand drive vehicle | |
Brake fluid replacement unit | |||
4 | Check the bolted connection of the left brake line (3) or right brake line (4) for color coding | ||
Installation: Identify or replace the left brake line (3) or right brake line (4) accordingly. | |||
Mark brake lines | |||
"Yellow" locking paint | |||
"Red" safety paint | |||
5 | Detach the front left connection (FL) for left brake line (3) or front right front connection (FR) for right brake line (4) on the hydraulic unit (1) | Collect brake fluid which runs out in a suitable container. Seal openings on the hydraulic unit (1) and on the left brake line (3) or right brake line (4) with suitable plugs. | |
| |||
6 | Detach left brake line (3) from left brake hose (5) or right brake line (4) from right brake hose (6) | Collect brake fluid which runs out in a suitable container. Seal opening on left brake line (3), right brake line (4), left brake hose (5), and right brake hose (6) using a suitable plug. | |
| |||
7.1 | Unscrew bolts (8) and place glow output stage (N14/2) aside with the lines connected | On vehicles with engine 639.9 and code (LHD) left-hand drive vehicle | |
8 | Loosen guide grommet (7) on the left and right of the body | Installation: In order to avoid damage to the left brake line (3) or the right brake line (4) due to chafing on the body, damaged guide grommets (7) must always be replaced. | |
9 | Unclip left brake line (3) or.right brake line (4) from the brackets | Installation: In order to avoid damage to the left brake line (3) or the right brake line (4) due to chafing on the body, damaged brackets must always be replaced. | |
10 | Take out left brake line (3) or right brake line (4) | Installation: In order to avoid damage to the left brake line (3) or the right brake line (4), do not bend or buckle the left brake line (3) or right brake line (4). | |
Installation: Replace the left brake line (3) or right brake line (4) if initial color coding testing makes color coding. | |||
11 | Install in the reverse order | ||
12 | Bleed brake system | On vehicles with code (30Y) Rear axle disk brake | |
On vehicles without code (30Y) Rear axle disk brake | |||
13.1 | Carry out transposition test | Only when the left brake line (3) and the right brake line (4) have been replaced. | |
| Connect STAR DIAGNOSIS and read out fault memory | ||
STAR DIAGNOSIS diagnosis system |
Brake lines, brake hoses
Number | Designation | Model | Model | ||
BA42.10-P-1001-04G | Brake pipe to brake hose | Nm | 15 | 15 | |
BA42.10-P-1005-04G | Brake line to hydraulic unit | Nm | 15 | 15 | |
Commercially available tools
Number | Designation | |
WH58.30-Z-1048-13A | STAR DIAGNOSIS diagnosis system, Compact Passenger Car | 6511 1801 00 |
Workshop equipment
WE58.40-Z-1001-07A | Brake fluid replacement unit |
Repair materials
Number | Designation | Order number |
BR00.45-Z-1028-07A | "Red" safety paint | Lackfabrik Bäder GmbH & Co. KG |
BR00.45-Z-1027-07A | "Yellow" locking paint | Lackfabrik Bäder GmbH & Co. KG |
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