gf1440w3012c

Component description for the overflow valve

Type gf · emne 14.40 · version 0101 · 2007-06-19

Gælder for: ENGINE 900.9 in MODEL 970, 972, 975, 976 with CODE (MS4) BlueTec 4 ENGINE 900.9 in MODEL 970, 972, 975, 976 with CODE (MS5) BlueTec 5 ENGINE 902.9 in MODEL 970, 972, 974, 975, 976 with CODE (MS4) BlueTec 4 ENGINE 902.9 in MODEL 970, 972, 974, 975, 976 with CODE (MS5) BlueTec 5 ENGINE 924.9 in MODEL 970, 972, 974 with CODE (MS4) BlueTec 4 ENGINE 924.9 in MODEL 970, 972, 974 with CODE (MS5) BlueTec 5 ENGINE 902.9 in MODEL 950.5 /6, 952.5 /6, 953.6, 954.5, 957 with CODE (MS4) BlueTec 4 ENGINE 902.9

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Placering

Funktionsgruppe 1 Motor › 14 Udstødningsmanifold, motorbremse, udstødningsrenseanlæg › 14.40 Efterbehandling af udstødningsgas, AdBlue — Serie 900 (modeller 9**) · Serie 902 (modeller 9**) · Serie 950 (modeller 5**, 6**) · Serie 952 (modeller 5**, 6**) · Serie 953 (modeller 6**) · Serie 954 (modeller 5**) · Serie 957 · Serie 970 · Serie 972 · Serie 974 · Serie 975 · Serie 976

Gælder også for motorer/gearkasser: 924 9**, 926 9**

GF14.40-W-3012C

Component description for the overflow valve

15.3.06

ENGINE 900.9 in MODEL 970, 972, 975, 976 with CODE (MS4) BlueTec 4

ENGINE 900.9 in MODEL 970, 972, 975, 976 with CODE (MS5) BlueTec 5

ENGINE 902.9 in MODEL 970, 972, 974, 975, 976 with CODE (MS4) BlueTec 4

ENGINE 902.9 in MODEL 970, 972, 974, 975, 976 with CODE (MS5) BlueTec 5

ENGINE 924.9 in MODEL 970, 972, 974 with CODE (MS4) BlueTec 4

ENGINE 924.9 in MODEL 970, 972, 974 with CODE (MS5) BlueTec 5

ENGINE 902.9 in MODEL 950.5 /6, 952.5 /6, 953.6, 954.5, 957 with CODE (MS4) BlueTec 4

ENGINE 902.9 in MODEL 950.5 /6, 952.5 /6, 953.6, 954.5, 957 with CODE (MS5) BlueTec 5

ENGINE 926.9 in MODEL 950.5 /6, 952.5 /6, 953.6, 954.5, 957 with CODE (MS4) BlueTec 4

ENGINE 926.9 in MODEL 950.5 /6, 952.5 /6, 953.6, 954.5, 957 with CODE (MS5) BlueTec 5

Component description for the overflow valve

W14.40-1277-06

Location

10 Compressed air control unit

7.03 Overflow valve (without return flow)

30.03 Pressure limiting valve (with purging)

Y106 SCR air pressure limiter solenoid valve (33.01)

The overflow valve (7.03) is part of the compressed air control unit (10) and is located on the inside of the left longitudinal frame member at the height of the muffler.

Task

The overflow valve (7.03) opens the access to the compressed air ancillary consumer circuit 4 after a certain pressure has been obtained.

Component description for the overflow valve

Design

1 Adjusting screw

2 Adjuster spring

3 Pistons

4 Diaphragm

5 Bore

6 Check valve

7 Bore

7.03 Overflow valve (without return flow)

A Connection (supply line)

B Connection (working line)

Function

The compressed air passes from the connection (A) into the housing of the overflow valve (7.03) and flows through the hole (7) below the diaphragm (4), which is pressed by the adjuster spring (2) and the piston (3) into its seat. When excess pressure is reached, the force of the adjuster spring (2) is overcome, so that the diaphragm (4) is raised from its seat and the hole (5) released. The compressed air passes directly and after opening of the check valve (6) to the downstream devices positioned in the direction of the arrow.

W14.40-1084-03