MTU 16V4000M73 Operating Instructions Manual page 181

Removing dosing unit
Note: Shutoff devices for urea solution lines must
be provided on-board.
1. Shut off supply and return line from pre-feed
module to tank.
2. Disconnect connector (1) from dosing unit.
3. Remove urea solution supply line (3) and re-
turn line (2).
4. Remove screws (1, 2, 3).
5. Remove dosing unit together with insulating
molding (4).
Installing dosing unit
1. Fit insulating molding (1) on dosing unit (3).
2. Insert plates (2).
3. Turn the dosing unit a little to press the
graphite ring seal flat.
MS150123/01E 2017-05 | Exhaust Gas Aftertreatment | 181