SI42.20-L-0001A | Parking brake service information | 28.2.00 |
MODELS 668.###, 670.### 1N up to 080120 with CODE (B65) heated air drier (single-chamber system)
with power-assisted service brake with electrical air compressor for parking brake system (FBA)
Modification notes
New K27 relay when retrofitting heated air dryer.
K27 relay with overrunning diode is not compatible!
Please read installation instructions before fitting.
Cost procedure:
when retrofitting heated air dryer (code B65).
Use of relay K27 with overrunning diode:
Before using relay K27 the wires in compartments 2 (21.00 br/bl) must be replaced with the wires in compartment 4 (21.00 bl) in the 5-pin relay pedestal.
After installing the relay, do not forget to attach a sticker containing the installation data on the inside of the e-compartment cover (to do this, print document, cut out figure 2 and complete).
L42.20-0047-01
Before replacing.
A term. 85
B term. 86
After replacing.
A term. 86
B term. 85
Connections switched and new relay with erase diode installed on:.................................
L42.20-0057-01
Parts ordering notes
Part no. | Designation | Quantity |
A 000 835 01 59 | 12 V relay | as required |
A 003 545 98 05 | 24 V relay | as required |