SM42.20-L-0006B | Converting spring accumulator parking brake | 16.2.12 |
MODELS 668.###, 670.### ## as of 070981 up to 081120 up to 30.11.98
except CODE (B16) 2-circuit hydraulic brake/2-circuit compressed air brake
except CODE (B19) hydraulic 2-circuit/compressed air 2-circuit heavy-duty brakes
Operation no. of operation texts or standard texts and flat rates
Sector | Op. no. | Operation text |
N | 023718 | RETROFIT SINGLE-CHAMBER AIR DRIER (HEATED) CODE B65 22 work units/1.8 h |
L42.60-0011-09
A Electr. compressor
B Compressed air drier, heated
C1 Compressed air reservoir
C2 Compressed air reservoir
D1 Pressure relief valve
D2 Safety valve
D3 Overflow valve
D4 Relay valve
D5 Hand brake valve with vent
F Distributor unit with check valve
G1 Spring-type actuator
G2 Spring-type actuator
H1 Test connector
H2 Test connector
H3 Test connector
I Wire 12 x 1.5
7.8 m
Switch B74 (new) switches
compressor off at 12 bar.
Switch B75 (new) switches compressor on at 10.5 bar.
E1 Pressure switch B12
(without color coding)
E2 Pressure switch B74
(blue color coding)
E3 Pressure switch B14
(yellow color coding)
E4 Pressure switch B75
(without color coding)
E5 Pressure switch B5
(malfunction indicator lamp for parking brake - red)
E6 Pressure switch B13
(red color coding)
L42.60-0015-09
A Electr. compressor
B Compressed air drier, heated
C1 Compressed air reservoir
C2 Compressed air reservoir
D1 Pressure relief valve
D2 Safety valve
D3 Overflow valve
D4 Relay valve
D5 Hand brake valve with vent
F Distributor unit with check valve
G1 Spring-type actuator
G2 Spring-type actuator
H1 Test connector
H2 Test connector
H3 Test connector
I1 Wire 12 x 1.5 7.8 m
I2 Intake pipe
Switch B74 (new) switches compressor off at 12 bar. Switch B75 (new) switches compressor on at 10.5 bar.
E1 Pressure switch B12
(yellow indicator lamp)
E2 Pressure switch B74
(blue color coding)
E3 Pressure switch B14
(yellow color coding)
E4 Pressure switch B75
(without color coding)
E5 Pressure switch B5
E6 Pressure switch B13
(red color coding)
L42.60-0017-09
Spring-type actuator under vacuum
A Electr. compressor
B Compressed air drier for heating R38
D7 Drain valve R37
E2 Pressure switch for compressor Off
(12 bar) B74
E3 Pressure switch II (8.4 bar) B14
E4 Pressure switch for compressor On
(10.5 bar) B75
E6 Pressure switch (5.5 bar) B13
L1 Plug connector for compressor X35
M1 J1 (Display of stop light)
M2 J32 (Term. 15 closed)
M3 J28 (Display D+)
M4 A11.2/2
M5 K18, Term. 87a
M6 K47, Term. 86
J1 Spring-type actuator indicator relay K42
J2 Hysteresis switch relay K27
J3 Relay for compr. of spring-type actuator K18
J4 Relay for compressed air drier K48
J5 Time relay 4 sec. K47
K1 Fuse for spring-type actuator compressor
20 A - 24 V
30 A - 12 V F39
K2 Fuse for compressed air drier
Heating 10 A F49
L42.60-0018-09
Spring-type actuator under vacuum
A Electr. compressor
D7 Drain valve R37
E2 Hysteresis switch
10.5 bar On
12 bar Off B74
E3 Pressure switch II (8.4 bar) B14
E6 Pressure switch (5.5 bar) B13
L1 Plug connector for compressor X35
M1 J1 (Display of stop light)
M2 J32 (Term. 15 closed)
M3 J28 (Display D+)
M4 A11.2/2
M5 K18, Term. 87a
M6 K47, Term. 86
J1 Spring-type actuator indicator relay K42
J3 Relay for compr. of spring-type actuator K18
J5 Time relay 4 sec. K47
K1 Fuse for spring-type actuator compressor
20 A - 24 V
30 A - 12 V F39
L42.60-0019-09
Spring-type actuator under vacuum
A Electr. compressor
D7 Drain valve R37
E2 Pressure switch for compressor Off
(12 bar) B74
E3 Pressure switch II (8.4 bar) B14
E4 Pressure switch for compressor On
(10.5 bar) B75
E6 Pressure switch (5.5 bar) B13
L1 Plug connector for compressor X35
M1 J1 (Display of stop light)
M2 J32 (Term. 15 closed)
M3 J28 (Display D+)
M4 A11.2/2
M5 K18, Term. 87a
M6 K47, Term. 86
J1 Spring-type actuator indicator relay K42
J2 Hysteresis switch relay K27
J3 Relay for compr. of spring-type actuator K18
J5 Time relay 4 sec. K47
K1 Fuse for spring-type actuator compressor
20 A - 24 V
30 A - 12 V F39
System must not be under pressure | |||
Danger! | Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices | No fire, sparks, open flames or smoking. Wear acid-resistant gloves and clothing and safety glasses with side guards. Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground. Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers. | |
1 | Remove frame wiring harness | ||
2 | Install frame wiring harness | ||
3 | Prepare bulkhead wiring harness | ||
4 | Remove wiring harness for spring brake | ||
5 | Install wiring harness for spring brake | Use circuit diagram | |
6 | Retrofit auxiliary components on compressor | Retrofitting B65 | |
7 | Install frame wiring harness | ||
8 | Check compressed air system | Up to VIN No. 070980 | |
As of VIN No. 070981 | |||
9.1 | Repair system if not OK | ||
10 | Document the operations performed in the FDOK | Screen 1517 |
Parts ordering notes
Part no. | Designation | Quantity |
A 670 553 00 16 | Kit 1 - Retrofitting 2-switch 12 V and 24 V, left-hand steering | 1 |
Components marked with X in the following are included in this component kit | 1 | |
A 669 540 87 36 | X Bulkhead wiring harness (left-hand steering) or | |
A 669 540 88 36 | Bulkhead wiring harness (right-hand steering) | |
A 669 540 14 27 | X Frame wiring harness (all wheel bases, loop if necessary) | 1 |
A 005 545 10 14 | X Switch (10.5 bar) B75 | 1 |
A 005 545 11 14 | X Switch (12 bar) B74 | 1 |
A 004 545 04 05 | X Relay (12 V) or | 2 |
A 003 545 96 05 | X Relay (24 V) | 2 |
N 072 581 000 304 | X Fuse 10 A | 1 |
A 006 545 44 26 | X Sockets | 2 |
A 000 990 44 68 | X Adapter | 1 |
A 000 429 02 27 | X Thrust ring | 3 |
A 000 987 04 46 | X O-ring | 3 |
N 007 603 012 111 | X Copper sealing ring | 3 |
A 670 553 04 16 | Kit 5 - Converting to heated compressed air drier code B65 12 V | 1 |
A 670 553 05 16 | Kit 6 - Converting to heated compressed air drier code B65 24 V | 1 |
Components marked with X1 in the following are included in component kit 5 Components marked with X2 in the following are included in component kit 6 | ||
A 001 431 98 15 | X1 Compressed air drier, heated (12 V) or | 1 |
A 001 431 97 15 | X2 Compressed air drier, heated (24 V) | 1 |
A 668 420 02 71 | X1/2 Safety valve assy. or | 1 |
A 668 420 02 71 | Safety valve assy. (only for wheel base 4800 and transmission G60 or automatics) | 1 |
N 007 603 012 405 | X1/2 Sealing rings | 4 |
A 669 540 54 36 | X1/2 Frame wiring harness (for all wheel bases) | 1 |
A 668 427 20 41 | X1/2 Bracket for safety valve | 1 |
N 000 000 000 932 | X1/2 Clamp for safety valve | 1 |
N 914 146 006 102 | X1/2 Hex bolt M6x16 | 1 |
N 913 023 006 001 | X1/2 Nut M6-8 | 1 |
N 000 908 022 011 | X1/2 Closure plug M22x1.5 | 1 |
N 007 603 022 403 | X1/2 Sealing ring (for opening of old safety valve) | 1 |
A 006 997 30 90 | X1/2 Tie strap | 10 |
A 001 997 84 90 | X1/2 Tie strap | 20 |
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