Remove/Install Relay Box From TELMA Retarder - Ar43.40-D-1750C

MODEL 906 with CODE (PB2) Mastercode retarder VMC 

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Disconnect ground lead from battery		AR54.10-D-0003SD
2	Lift/jack up vehicle		AR00.60-D-1000H
3	Unscrew bolts (1) from cover (2) of retarder relay box (K1).
4	Remove cap (2)	Make sure sealing of cover (2) is correctly seated as otherwise water may enter the retarder relay box (K1) and damage the relays (3, 4, 5) or corrosion may occur.
5	Carefully pull sealing grommets (9) downwards	Make sure sealing grommets of cover (9) are correctly seated as otherwise water may enter the retarder relay box (K1) and damage the relays (3, 4, 5) or corrosion may occur.
6	Cut and expose ground line (8) of retarder relay box (K1)		*BA43.40-N-1011-01C
7	Cut and expose electrical line (7) from retarder relay box (K1)		*BA43.40-N-1010-01C
8	Mark installation position of electrical lines (6) in retarder relay box (K1)	The electrical lines (6) must not be mixed up, as otherwise the retarder function will be impaired.
9	Cut and expose electrical lines (6) from retarder relay box (K1)		*BA43.40-N-1013-01C
10	Cut retarder connector (X97)
11	Remove nuts (10) of retarder relay box (K1)		*BA43.40-N-1009-01C
12	Remove retarder relay box (K1)
13	Install in the reverse order

RETARDER

Number	Designation			Model 906 with code PB2
BA43.40-N-1009-01C	Nut, relay box to bracket	M8	Nm	18
BA43.40-N-1010-01C	Nut, electrical line + in relay box	M8	Nm	14
BA43.40-N-1011-01C	Nut, electrical line M (ground) in relay box	M6	Nm	6
BA43.40-N-1013-01C	Nut, electrical line to retarder in relay box	M6	Nm	6