Shown on model 447 with code HH9 (TEMPMATIC semi-automatic controlled air conditioning) |
1 | Brake booster |
S43.10-A008-76
S43.10-A009-79
Shown on model 447 with code HH9 (TEMPMATIC semi-automatic controlled air conditioning) |
1 | Brake booster | 7.2 | Refrigerant line | |
2 | Brake lines | 8 | Screw | |
3 | Nuts | 9 | Refrigerant line | |
4 | Nut | 10 | Vacuum line | |
5 | Bracket | 11 | Bracket | |
6 | Nut | 11.1 | Retaining tab | |
7.1 | Refrigerant line | 12 | Elastomer strips |
S43.10-A007-07
13 | Cotter pin | 15 | Nuts | |
14 | Thrust rod |
Danger | Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion due to formation of ignitable refrigerant/air mixtures | Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. | |
Warning | Risk of poisoning caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts | Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. | |
Caution | Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid | Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | |
Topical note | Protect air conditioning circuit and components from moisture when carrying out repair work | ||
Topical note | Brake fluid notes | ||
Notes on handling refrigerant R1234yf | |||
Notes on handling refrigerant R134a | |||
| Remove/install | ||
1 | Reduce vacuum in brake booster (1) by depressing the brake pedal several times. | ||
2 | Discharge air conditioning system. |
| |
Model 447 except code HX1 (R-1234yf refrigerant) | |||
3 | Clean area surrounding cap on brake fluid reservoir and connections of brake lines (2) on master brake cylinder and on hydraulic unit. | | |
Use clean, lint-free rag only. | |||
Do not use any compressed air for cleaning when the brake system is open. | |||
Assembly cleaner | |||
4 | Remove cap from brake fluid reservoir and take sieve out of brake fluid reservoir. | ||
5 | Extract brake fluid from brake fluid reservoir, insert sieve and then reseal brake fluid reservoir. | ||
6 | Remove air/water duct. | ||
7 | Remove air filter housing. | ||
8 | Remove brake lines (2) and seal openings using suitable stop plugs. | Retaining screw, brake line to hydraulic unit | |
Retaining screw, brake line to master brake cylinder | |||
Box wrench bit | |||
Record plug | |||
9 | Remove nuts (3). | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
10 | Unscrew nut (4) and remove holder (5). | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
11 | Remove nut (6), detach refrigerant lines (7.1, 7.2) from expansion valve and seal openings using suitable stop plugs. | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
| Compressor oils (specification 362.1) | ||
Installation: Replace sealing rings and moisten with compressor oil. | |||
Nut, refrigerant line to expansion valve | |||
Record plug | |||
12 | Unscrew screw (8), detach refrigerant line (9) and seal openings using suitable stop plugs. | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
| Compressor oils (specification 362.1) | ||
Installation: Replace sealing ring and moisten with compressor oil. | |||
Threaded connection, refrigerant line to refrigerant line | |||
Record plug | |||
13 | Remove holders of refrigerant line (7.1) from driver's side longitudinal member. | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
14 | Detach vacuum line (10) from brake booster (1). | Installation: Check seal for vacuum line (10) in brake booster (1) for damage and leak tightness. | |
If the seal is damaged or no longer seals correctly | |||
| |||
install new gasket. | |||
15 | Remove steering column tube. | ||
16 | Remove cotter pin (13) and detach push rod (14) from brake pedal. | ||
17 | Remove nuts (15). | Nut, brake booster to firewall | |
18 | Bend open retaining tabs (11.1) of holders (11) in direction of arrow (arrow A) and open holders (11) in direction of arrow (arrow B). | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
19 | Release refrigerant lines (7.1, 7.2) from holders (11). | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
Installation: Observe correct position of elastomer strips (12). | |||
20.1 | Remove brake booster (1) forwards. | Model 447 without code HH4 (THERMOTRONIC automatic climate control) or model 447 without code HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
Installation: Replace seal between brake booster (1) and firewall. | |||
20.2 | Guide out brake booster (1) under refrigerant lines (7.1, 7.2) and remove forwards. | MODEL 447 with CODE HH4 (THERMOTRONIC automatic air conditioning) or CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC) | |
Installation: Replace seal between brake booster (1) and firewall. | |||
WIS Service Media | |||
21 | Remove master brake cylinder. | If the brake booster (1) is to be replaced. | |
22 | Install in the reverse order. | ||
23 | Bleed brake system. | ||
| Check | ||
24 | Perform brake test. | ||
|
129 589 00 91 00
Record plug
000 589 75 03 00
Box wrench bit