ar1440w2016b

Remove/install pressure limiting valve at air controller unit of the exhaust aftertreatment system

Type ar · topic 14.40 · version 0102 · 2011-03-24

Applies to: ENGINES 457.9 in MODEL 940, 942, 943, 944 with CODE (MS4) BlueTec 4 ENGINES 457.9 in MODEL 940, 942, 943, 944 with CODE (MS5) BlueTec 5

Where it sits

Function group 1 Engine › 14 Exhaust manifold, engine brake, emission control system › 14.40 Exhaust aftertreatment, AdBlue — Series 940 · Series 942 · Series 943 · Series 944

EinPAS 15 Engine › 15.40 Exhaust system/exhaust aftertreatment › 15.40.13 Line/hose/valve — Series 940 · Series 942 · Series 943 · Series 944

Also applies to engines/gearboxes: 457 9**

AR14.40-W-2016B

Remove/install pressure limiting valve at air controller unit of the exhaust aftertreatment system

22.3.11

ENGINES 457.9 in MODEL 940, 942, 943, 944 with CODE (MS4) BlueTec 4

ENGINES 457.9 in MODEL 940, 942, 943, 944 with CODE (MS5) BlueTec 5

Remove/install pressure limiting valve at air controller unit of the exhaust aftertreatment system

W14.40-1173-06

1 Compressed air inlet

2 Compressed air outlet

3 Union nut

4 Union nut

7.03 Overflow valve without return flow

30.03 Pressure limiting valve with vent

Y106 SCR air pressure limiter solenoid valve (33.01)

Remove/install

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Notes on compressed air connection systems

AH00.18-N-0001-01A

1

Remove compressed air line at compressed air inlet (1)

After turning off engine, individual lines are scavenged with compressed air for about 3 minutes. For this reason, do not start any work on the exhaust aftertreatment system before this time has passed.

To detach compressed air line first loosen union nut (4) by two revolutions to release pressure and then remove.

*BA00.18-N-1002-01A

2

Remove compressed air line at compressed air outlet (2)

First loosen union nuts (3) by two revolutions to relieve pressure and then remove.

*BA00.18-N-1002-01A

3

Remove pressure limiting valve with vent (30.03)

*BA14.40-N-1019-02B

4

Install in the reverse order

5

Pressurize the compressed-air system up to cutoff pressure

Compressed air lines

Number

Designation

Model
940, 942,
943, 944

BA00.18-N-1002-01A

VOSS "232" compressed-air connection system

M161.5

Nm

12

M221.5

Nm

12

Exhaust aftertreatment, Blue Tec

Number

Designation

Engine
457.9
with code MS4
or code MS5

BA14.40-N-1019-02B

Air pressure limiter valve on bracket

Nm

10

Referenced documents