MTU 16V4000M73 Operating Instructions Manual page 188

Removing pre-feed module
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. Provide suitable containers to collect urea
solution.
3. Disconnect connector from pressure sen-
sor (3).
4. Disconnect solenoid coil connectors (6)
and (7).
5. Disconnect quality sensor (8).
6. Remove pressure line (1) from urea solution
outlet.
7. Remove intake line (2) from urea solution in-
let.
8. Remove tank supply line from urea solution
inlet (4).
9. Remove tank return line from urea solution
outlet (5).
10. Seal urea solution connections with the asso-
ciated transport closures.
11. Remove pre-feed module from SCR catalytic
converter.
Installing pre-feed module
Note: Coat the thread with (Assembly compound
(Molykote P 37)).
1. Install pre-feed module on SCR catalytic con-
verter.
2. Remove transport closures from urea solu-
tion connections.
3. Install tank return line on urea solution outlet
(5).
4. Install tank supply line on urea solution inlet
(4).
5. Install intake line (2) on urea solution inlet.
6. Install pressure line (1) on urea solution out-
let.
7. Connect quality sensor (8).
8. Connect solenoid coil connectors (6) and (7).
9. Connect connector on pressure sensor (3).
10. Open supply and return line from pre-feed
module to tank before starting engine.
188 | Exhaust Gas Aftertreatment | MS150123/01E 2017-05