Removal and installation of the electronic board - ra54001406040x(6040)

Model 140 (up to approx.10/93)

Preliminary work:

Instrument cluster removed (Removal and installation of the instrument cluster ).

Operation no. of operation texts and work units or standard texts and flat rates:

Fig 1: Locating Instrument Cluster Housing Outer Bulb

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Instrument cluster housing	remove, install (Removal and installation of instrument cluster housing ).
Gauges	remove and install (Removal and installation of instrument cluster gauges ).
Outer bulb (arrow)	use special tool 129 589 00 09 00 to turn 90° to the left and remove, insert and turn 90° to the right.
	NOTE: The inner bulbs are contained in scope of supply of electronic board.
Coding connector (1)	turn 90° to the left and remove, insert and turn 90° to the right (pay attention to note).

Note (only models 140.0)

Two characteristic curves are required for the fuel gauge as a result of two different fuel tanks (95 liters and 101 liters). The gauge is adapted by means of an adapter plug (arrow) on the electronic board of the instrument cluster (A1).

Fig 2: Locating Instrument Cluster Housing Adapter Plug

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Adapter Plug With And Without Contact Position

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Special tool

Fig 4: Identifying Special Tool (129 589 00 09 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.