Check brake booster - AR43.10-P-0325A
MODEL 129, 140, 170, 202, 208, 210
MODIFICATION NOTES
| 19.10.00 |
Value changed from 4 to 7 Nm |
Value in BA42.10-P-1002-03A changed for models 202.033/093, 208.374, 210.072 with code 957 (E50 AMG),
210.074/274 |
*BA42.10-P-1002-03A |
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Inspect |
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| 1 |
Operate brake pedal several times until vacuum in brake booster is reduced |
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AR43.10-P-0024-01A |
| 2 |
Disconnect tester from brake booster |
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AR43.10-P-0024-01A |
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Vacuum tester |
Figure |
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Test connector, for brake boosters with plug connection |
Figure |
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Test connector for testing the check valve or brake booster |
With bolted connection at brake booster |
WF58.50-P-4310-01A |
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*BA43.10-P-1001-01A |
| 3 |
Connect, disconnect pressure tester (051) to connection at brake caliper |
After testing, only bleed the brake caliper to which the pressure tester was connected. |
*WH58.30-Z-1012-15A |
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Fixed caliper: |
*BA42.10-P-1002-02A |
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Floating caliper: |
*BA42.10-P-1002-03A |
| 4 |
Fit, remove pedal force measuring instrument (060) at brake pedal |
|
*WE58.40-Z-1003-19A |
| 5 |
Start the engine and create a vacuum of 0.75 - 0.80 bar by pressing and then suddenly releasing the accelerator pedal. |
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*BE43.10-P-1001-01A
*BE43.10-P-1002-01A |
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If a considerably lower vacuum is achieved or if the vacuum decreases immediately, the O-ring between the brake booster and tandem master brake cylinder may be damaged, or the check valve in the vacuum line may be defective: ↓ |
*BE43.10-P-1003-01A |
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Checking non-return valve
Vehicle with diesel engine - check vacuum pump: ↓ |
AR43.10-P-0023A |
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Model 202 with Engine 601
Model 202 with Series 604, 605 engine |
ra07016010160x |
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Model 140 with Engine 603 |
ra07016021843x |
| 6 |
Supply brake pedal with specified force and read line pressure (see line pressure table) |
To cover measurement errors as far as possible (wrong force on brake pedal, wrong vacuum) and measurement scatter of the gauges, a tolerance of 10 ± bar on the specified value is permissible. |
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| 7 |
Bleed brake system. |
|
AR42.10-P-0010A |
TEST VALUES FOR PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
Models 129.05/06 (ATE T52/4A 225-210 or Lucas LSC 115) |
Model 129.076 (ATE T52/4A 225-210) |
| BE43.10-P-1001-01A |
Brake booster ø |
mm |
203/228,6 |
203/228,6 |
| inch |
8/9 |
8/9 |
| BE43.10-P-1002-01A |
Boost factor |
≈ 5.6 |
≈5 .6 |
| BE43.10-P-1003-01A |
Brake pipe line pressure |
Suction pipe vacuum 0.75-0.8 bar |
Force on brake pedal |
50N |
bar |
14-25 |
14-25 |
| 100N |
bar |
35-45 |
35-45 |
| 150N |
bar |
53-63 |
53-63 |
| 200N |
bar |
71-81 |
71-81 |
| 250N |
bar |
87-98 |
87-98 |
TEST VALUES FOR PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
Models 140.02/03/1 (ATE T52/4A 225-210 and Lucas LSC 115) |
Models 140.04/05/06/07 (ATE T52/4A 255-225) |
| BE43.10-P-1001-01A |
Brake booster ø |
mm |
203/228,6 |
228,6/254 |
| inch |
8/9 |
9/10 |
| BE43.10-P-1002-01A |
Boost factor |
≈5.6 |
6,85 |
| BE43.10-P-1003-01A |
Brake pipe line pressure |
Suction pipe vacuum 0.75-0.8 bar |
Force at brake pedal |
50N |
bar |
14-25 |
13-25 |
| 100N |
bar |
35-45 |
35-47 |
| 150N |
bar |
53-63 |
57-69 |
| 200N |
bar |
71-81 |
78-92 |
| 250N |
bar |
87-98 |
95-105 |
TEST VALUES FOR PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
models 170.435/444/445 /447/449/465/466 |
Model 202.018 up to 9/93 and Models 202.120/ 121/122/125 up to 04/94 (Lucas LSC 65 or Bendix Isovac ø 225) |
| BE43.10-P-1001-01A |
Brake booster ø |
mm |
254 |
228,6 |
| inch |
10 |
9 |
| BE43.10-P-1002-01A |
Boost factor |
4.5 |
3,85 |
| BE43.10-P-1003-01A |
Brake pipe line pressure |
Suction pipe vacuum 0.75-0.8 bar |
Force at brake pedal |
50N |
bar |
13...23 |
7-15 |
| 100N |
bar |
32...44 |
26-38 |
| 150N |
bar |
48...62 |
43-58 |
| 200N |
bar |
62...78 |
62-75 |
| 250N |
bar |
75...91 |
78-88 |
TEST VALUES FOR PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
Models 202.02/078/08/128/13/18/19 model 202.018 as of 10/93 models 202.120/121/122/ 125 as of 05/94 (ATE T52/4A/255 and Lucas LSC 80) |
Model 208.335/344/345/347/348/365/435/444/445/447/448/465 |
| BE43.10-P-1001-01A |
Brake booster ø |
mm |
254 |
254 |
| inch |
10 |
10 |
| BE43.10-P-1002-01A |
Boost factor |
4.5 |
4.5 |
| BE43.10-P-1003-01A |
Brake pipe line pressure |
Suction pipe vacuum 0.75-0.8 bar |
Force at brake pedal |
50N |
bar |
13-23 |
13...23 |
| 100N |
bar |
32-44 |
32...44 |
| 150N |
bar |
48-62 |
48...62 |
| 200N |
bar |
62-78 |
62...78 |
| 250N |
bar |
75-91 |
75...91 |
TEST VALUES FOR PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
Model 208.370/470 |
Models 210.003/004/ 006/010/017/02 0/035/037/206/ 210/235/237, 210.217 up to 01/97 (Teves), 210.061/261 without ESP |
| BE43.10-P-1001-01A |
Brake booster ø |
mm |
203/228,6 |
254 |
| inch |
8/9 |
10 |
| BE43.10-P-1002-01A |
Boost factor |
5,6 |
5.0 |
| BE43.10-P-1003-01A |
Brake pipe line pressure |
Suction pipe vacuum 0.75-0.8 bar |
Force at brake pedal |
50N |
bar |
8...18 |
15-25 |
| 100N |
bar |
33...40 |
38-50 |
| 150N |
bar |
52...61 |
57-70 |
| 200N |
bar |
68...79 |
72-83 |
| 250N |
bar |
82...95 |
82-91 |
TEST VALUES FOR PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
Models 210.015/016/025/026/045/053/055/063/065/070/072/081/082/210/215/216/225/226/245/265/270/272/281/282/606/610/617/663,210.217 as of 01/97 (Teves), 202.033/093, 210.074/274, 210.061/261 with ESP |
| BE43.10-P-1001-01A |
Brake booster ø |
mm |
203/228,6 |
| inch |
8/9 |
| BE43.10-P-1002-01A |
Boost factor |
5,6 |
| BE43.10-P-1003-01A |
Brake pipe line pressure |
Suction pipe vacuum 0.75-0.8 bar |
Force on brake pedal |
50N |
bar |
8...18 |
| 100N |
bar |
33...40 |
| 150N |
bar |
52...61 |
| 200N |
bar |
68...79 |
| 250N |
bar |
82...95 |
FRONT AXLE FIXED CALIPER
| Number |
Designation |
Model 129 |
Model 140 |
Model 202.028 with Code 957 (C 36 AMG) |
| BA42.10-P-1002-02A |
Bleeder screw at fixed caliper of front axle |
NM |
7 |
7 |
7 |
FRONT AXLE FIXED CALIPER
| Number |
Designation |
Model 208.370/470 up to 18.01.99 except  |
Model 210.055 with Code 957 (E 36 AMG) |
Model 210.072/270/272 up to 07.02.99, model 210.070 up to 07.02.99 except  |
| BA42.10-P-1002-02A |
Bleeder screw at fixed caliper of front axle |
NM |
7 |
7 |
7 |
FRONT AXLE FLOATING CALIPER
| Number |
Designation |
Model 170.435/444/445/447/449/465 |
Model 170.466 |
| BA42.10-P-1002-03A |
Bleed screw on front axle floating caliper |
NM |
7 |
7 |
FRONT AXLE FLOATING CALIPER
| Number |
Designation |
Models 202.018/020/022/023/078/080/081/083/087/120/121/122/125/133/134/180/182/193/194,202.028 up to 08/95 |
Models 202.024/025/026/029/082/085/086/088/089/128/188,202.028 as of 09/95 |
| BA42.10-P-1002-03A |
Bleed screw on front axle floating caliper |
NM |
7 |
7 |
FRONT AXLE FLOATING CALIPER
| Number |
Designation |
Model 202.033/093, 208.374, 210.072 with Code 957 (E50 AMG), 210.074/274 |
Models 208.335/344/34 5/347/348/365/435/444/445/ 447/448/465, 208.370/470 |
| BA42.10-P-1002-03A |
Bleed screw on front axle floating caliper |
NM |
7 |
7 |
FRONT AXLE FLOATING CALIPER
| Number |
Designation |
Model 208.370/470 as of 19.01.99, except |
Model 210.00/01/02/035/037/04/05/06/08/20/21/22/23/24/26/28/60/61/663, except model 210.083/283 as of 08.02.00 Model 210.070  |
| BA42.10-P-1002-03A |
Bleed screw on front axle floating caliper |
NM |
7 |
7 |
FRONT AXLE FLOATING CALIPER
| Number |
Designation |
Model 210.083/270/283 as of 08.02.99, model 210.070 as of 08.02.99 except |
| BA42.10-P-1002-03A |
Bleed screw on front axle floating caliper |
NM |
7 |
PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
Model 129 up to 09/89 |
Model 129 as of 10/89 |
Model 140 |
| BA43.10-P-1001-01A |
Vacuum line on brake servo |
NM |
30 |
30 |
30 |
PNEUMATIC BRAKE BOOSTER
| Number |
Designation |
Model 170 |
Model 202 |
Model 208 |
Model 210 |
| BA43.10-P-1001-01A |
Vacuum line on brake servo |
NM |
- |
30 |
- |
30 |
COMMERCIALLY AVAILABLE TOOLS
| Number |
Designation |
| WH58.30-Z-1012-15A |
Pressure tester (hydraulic single / dual circuit brake systems) |
WORKSHOP EQUIPMENT
| WE58.40-Z-1003-19A |
Pedal force meter |