BENDIX SD-06-1800 Manuel D’Utilisation

1.   Apply the brake valve and note that the stop light lights 

before the delivery pressure reaches 7 psi.

2.   Release the brake valve and note that the stop light 

goes “off”.

1.   With the brakes fully applied, no leakage is permitted 

at the stop light switch. If the stop light switch does 
not function as described or if leakage is excessive, 
it is recommended that it be replaced with a new unit 
or repaired with genuine Bendix

®

 brand replacement 

parts available at authorized Bendix parts outlets.

1.  Disconnect the electrical connections at the stop light 

switch.

2.  Disconnect the air line to the stop light switch.

3.  Remove the stop light switch.

1.  Install in a convenient location for servicing.

2.  Install with the pipe tap pointing to the ground and keep 

it high for adequate drainage.

3.  Connect the stop light switch in series in the stop light 

circuit.

4.   Keep the stop light switch terminals away from frame 

members to avoid grounding.

5.   Connect the pipe tap to the brake chamber supply line 

so that the stop light switch will operate whether the 
foot or hand valve is applied.

1.   Place hex portion of body in a vise.

2.   Using a large end wrench on cover fl ats, turn cover (1) 

in a counterclockwise direction and remove from body.

3.   Remove terminal nuts, terminal screws (2) and terminal 

connector (7) from cover.

4. Remove spring (3), plunger (4), washer (5) and 

diaphragm (6) from body.

1.  Remove two machine screws (7) and remove cover 

(8).

2.   Remove the terminal nuts and terminals (9) from cover.

3.   Remove the vent plug (10) from cover.

4.   Remove spring (11), contact strip (12), piston (13) and 

o-ring diaphragm (14) from body.

Clean all metal parts in cleaning solvent. Wipe rubber parts 
dry with a cloth.

Inspect contact points for pits or wear. If pitting is not too 
severe, the points may be reconditioned by fi ling with a 
distributor point fi le. If points cannot be reconditioned, they 
should be replaced. The contact strip in the SL-4

™

 switch 

may be turned over to use the other side of the contacts.

Check the spring for signs of deterioration; Replace if 
discolored. The spring in the SL-3

™

 switch carries the 

current of the electrical circuit involved; consequently, in 
the case of excessive current, as might be caused by a 
short, the spring will be overheated and ruined.

Inspect cover and body. If cracked or damaged, replace.

Only genuine Bendix service parts should be used for 
replacement.

1.  Insert terminal screws (2) in the cover (1), making sure 

the terminal connector (7) is properly positioned.

2.  Secure terminal screws with washers and nuts, or  

terminal clips, as the case may be.

3.   Place diaphragm (6) in the body.

4.   Position the contact plunger (4) on diaphragm.

5.   Position spring (3) on the plunger.

6.   Place washer (5) on the diaphragm and screw the cover 

(1) into the body. Torque to 30 foot pounds. Make certain 
the vent hole in the cover is open.

1.  Position terminal screws (9) in the cover (8) and secure 

with washers and nuts or terminal clips. Place the vent 
plug (10) in cover.

2.   Place o-ring diaphragm (14) and piston (13) in the body.  

The o-ring diaphragm should be installed with its fl at 
side adjacent to the piston.

3.   Place the gasket (15) in place on the body and contact 

strip (12) on the piston (13).

4.   Position cover assembly on the gasket and secure with 

machine screws. Torque to 20 inch pounds.