Remove/install engine brake valve fitting

AR14.15-B-6302D

Remove/install engine brake valve fitting

18.02.2020

Engine

457.924/931 in model 696

Engine

457.926 in model 685

1

Compressed air piping

2

Outlet manifold with engine-brake device

3

Nut

4

Bolt

5

Turbocharger

6

Deflector plate

7

Nut

8

Gasket

9

Bolt

10

Exhaust pipe

11

Pneumatic cylinder

 

Remove/install

1

Disconnect the battery negative cable or turn-off the master switch.

 Warning

Risk of injury caused by pinching and crushing when opening and closing engine hood

No one should be within the swivel range of the engine hood as it is being opened or closed. Always open engine hood all the way to the end position until this engages in the front locks.

AS88.40-Z-0001-01A

2.1

Tilt the engine hood.

Trucks

.

AR88.40-B-1000B

2.2

Open the engine compartment lid.

Bus with engine 457.925/926/929.

 Refer to the body makers instructions.

3

Remove the compressed air piping (1) the pneumatic cylinder (11) of the engine-brake.

4

Release the nuts (7) from the bolts (9) and lower thew exhaust pipe (10).

 Installation: Replace the nuts (7) and the gasket (8).
Conveniently clean the contact surfaces.

 .Exhaust pipe to outlet manifold with engine brake mechanism

*BA14.10-B-1007-01B

5

Release the nuts (3) and the bolt (4) and remove the deflector plate (6) and the outlet manifold (2).

 Installation: Replace the nuts (3).

 .Outlet manifold with engine brake mechanism to turbocharger

*BA14.10-B-1003-01B

6

Install in reverse order.

 Exhaust manifold

Number

Designation

Engine 457.9 (except for 457.922/928), 460.984

BA14.10-B-1003-01B

Outlet manifold with engine brake mechanism to turbocharger

Nm

50

 Exhaust manifold

Number

Designation

Engine 457.9 (except for 457.922/928), 460.984

BA14.10-B-1007-01B

Exhaust pipe to outlet manifold with engine brake mechanism

Nm

50