ar0716b1045b

Remove/install rail pressure limiting valve

Type ar · topic 07.16 · version 0100 · 2016-02-12

Applies to: Cumbustion engine 612 with Vehicle 979.013, 979.016

Where it sits

Function group 1 Engine › 07 Mixture formation › 07.16 Diesel injection system common rail — Series 979 (models 013, 016)

EinPAS 15 Engine › 15.45 Engine management › 15.45.13 Line/hose/valve — Series 979 (models 013, 016)

Also applies to engines/gearboxes: 612 ***

AR07.16-B-1045B

Remove/install rail pressure limiting valve

12.02.16

Cumbustion engine 612 with Vehicle 979.013, 979.016

Remove/install rail pressure limiting valve

D07.16-1166-05

1 Pressure regulating valve's connector

2 Sealing ring

3 Sealing ring

4 Bolts

5 Common rail

Y74 Pressure regulator valve

Remove

Danger!

Risk of injuries when tilting the cabin, by catching or smashing

During back and forth cab tilting, stay away from tilting area and take preventive measures to avoid non-authorized people from entering tilting area. Always tilt the cab to its final position and secure it with the safety device.

AS60.80-B-0001-01A

1

Remove the connector (1) from the pressure regulating valve (Y74).

Danger!

Pay attention to the safety measures when dealing with fuel.

Risks of explosion and injuries.

AS47.00-B-0001-01A

2

Unfasten the bolts (4) and remove the pressure regulating valve (Y74) from the common rail (5).

Install:

3

Clean the sealing surfaces.

4

Apply a thin layer of special grease on the sealing rings (2) and (3).

Replace sealing rings (2/3).

Take care not to damage the sealing rings during the installation. The damaged rings can cause internal leaks which are not detectable from the outside.

*BR00.45-B-1024-06A

5

Install the pressure regulating valve (Y74) in the common rail (5) and tighten the bolts (4) in two stages.

Tighten the bolts gradually.

*BA07.16-B-1004-01A

6

Install the connector (1) in the pressure regulating valve (Y74).

Danger!

Risk of accident by the accidental movement when the engine is operating. Risk of injury by being smashed and burns due to contact during the start up procedure or with the engine in operation

Ensure that the vehicle is prevented to make any non-voluntary movement. Use closed and well tight work clothes. Do not touch heated or moving parts.

AS00.00-B-0005-01A

7

Check the tightness of the fuel system.

Common rail diesel injection (CDI)

Número

Denominação

Engine 612.983

BA07.16-B-1004-01A

Pressure regulator valve in the Rail pipe

1st stage

Nm

3

2nd stage

5

Produtos para reparos

Número

Denominação

Número de pedido

BR00.45-B-1024-06A

Synthetic grease Urethyn E2 - DBL 6827.50

A 001 989 42 51

Referenced documents