ar0130b5800b

Remove/install cylinder head

Type ar · emne 01.30 · version 0304 · 2020-03-13

Gælder for: Engine 904 in model 384.067 Engine 904.925 in model 390 Engine 904.965 in model 390 Engine 906.9 in model 958 Engine 924 (except 924.92) in model 368.002/004/006/104/106/115/117, 384.067/078/223/233, 685.282/284/289/290, 979.276/277/279 Engine 924 (except 924.92) in model 368.05

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 1 Motor › 01 Motor komplet, motorudluftning, topstykke, motorblok › 01.30 Topstykke — Serie 368 (modeller 002, 004, 006, 05*, 104, 106, 115, 117) · Serie 384 (modeller 067, 078, 223, 233) · Serie 390 · Serie 685 (modeller 282, 284, 289, 290) · Serie 904 · Serie 906 (modeller 9**) · Serie 958 · Serie 979 (modeller 276, 277, 279)

EinPAS 15 Motor › 15.16 Topstykke › 15.16.31 Topstykke/toppakning — Serie 368 (modeller 002, 004, 006, 05*, 104, 106, 115, 117) · Serie 384 (modeller 067, 078, 223, 233) · Serie 390 · Serie 685 (modeller 282, 284, 289, 290) · Serie 904 · Serie 906 (modeller 9**) · Serie 958 · Serie 979 (modeller 276, 277, 279)

Gælder også for motorer/gearkasser: 924 00*, 924 91*, 924 93*, 924 94*, 924 97*, 924 98*, 924 99*

AR01.30-B-5800B

Remove/install cylinder head

10.01.2020

Engine

904 in model 384.067

Engine

904.925 in model 390

Engine

904.965 in model 390

Engine

906.9 in model 958

Engine

924 (except 924.92) in model 368.002/004/006/104/106/115/117, 384.067/078/223/233, 685.282/284/289/290, 979.276/277/279

Engine

924 (except 924.92) in model 368.05

Remove/install cylinder head

1

Air tube

2

Intake manifold

3

Rocker arm mechanism

4

Intake valve bridge

5

Push rod

6

Injector pressure line

7

Connection housing

8

Gasket

9

Connecting piece

10

Screws

11

Shifter lever support (trucks with advanced cab and buses)

B01.30-0004-06

Remove/install cylinder head

12

Exhaust manifold and turbocharger

13

Constant throttles pipe (Top brake)

14

Crankcase bolt

15

Cylinder head

16

Cylinder head gasket

17

Air compressor cooling pipe

18

Cylinder head guides

19

Return pipe of the injectors

B01.30-0006-06

Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

Remove/install

Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

1

Drain the cooling system

Topical note

Notes on coolant

AH20.00-N-2080-01A

.

AP20.00-B-2080XA

Catch the coolant, change it if necessary.

2

Remove the cylinder head cover


Engine 924 in Type 368.002/004/006/104/106/115/117, 384.067/078, 685.282/284/289/290, 979.276/277/279 Engine 924 in Type 368.05 Engine 904 in Type 384.067

AR01.20-B-5014B

3

Remove the air duct (1)


.

AR09.41-B-8620C

4

Remove the intake manifold (2)


.

AR09.41-B-8681A

5

Remove the bolts (10) and move aside the shifter lever support (11) on the cylinder head (15)

Move the bracket (11) together with the shifting lever and rod so it does not interfere in the removal of the cylinder head (15).

.Gear lever support bolt

*BA01.30-B-1005-01C

6

Remove the exhaust manifold with the turbocharger (12)


.

AR14.10-B-3915A

7

Remove the injector pressure line (6)


.

AR07.15-B-9235A

8

Remove the return line of the injection nozzles (19) on the cylinder head (15)

Installation: Replace the sealing washers.

9

Remove the constant throttle 13) piping of the cylinder head (15)

Engines fitted with (top brake) constant throttles.

Installation: Replace the sealing washers.

10

Disconnect from the cylinder head (15) the pipe for air compressor cooling (17)

11

Remove the connection housing (7)

Installation: Replace the connection piece (9) and the gasket (8).

.Connection part of the cooling pump in the thermostatic valve head/cover

*BA20.10-B-1003-01B

12

Remove the valve rocker arm mechanism (3).


.

AR05.00-B-5521A

13

Remove the intake valve bridges (4)

14

Remove the tappet push rods (5)

Oil the push rods with engine oil.

15

Remove the cylinder head bolts (14).


.

AR01.30-B-5800-01B

Oil the bolts of the cylinder head (14) with engine oil and follow the tightening diagram.

.Crankcase bolt

*BA01.30-B-1002-01C

Socket

*422589000900

16

Remove the cylinder head (15) and the gasket (16)


.

AR01.30-B-5800-11A

In order not to damage the installed injection nozzle, lay the cylinder head (15), on its side.

Installation: Replace the cylinder head gasket (16) and pay attention to their assembly position. Precisely fit the gasket and the cylinder head on the guides (18)

Lifting device

*904589016300

17

Clean the threaded holes and the oil and coolant flow holes and at the engine block

Protect the block's surface to avoid dirt.

Check

18

Measure the shank length (L) of the cylinder head bolts (14)

If the admissible length of the thread (L) is exceeded, replace the corresponding bolt of the cylinder head (14).

19

Clean the cylinder head (15) and check for cracks

In case of irregularity, replace the cylinder head (15).

20

Check the cylinder head (15) mating surface for unevenness


Engine 904, 906.9, 924.9

AR01.30-B-7162A

Engine 904, 906 in Type 384.067, 958

AR01.30-B-5800-12A

Machine the cylinder head mating surface if the unevenness is above the maximum permissible.

.Maximum permissible flatness deviation of cylinder head mating surface

*BE01.30-B-1002-02C

21

Check the flatness of the upper surface of the engine block


.

AR01.40-B-9133-01A

On engine blocks with cylinder liners, the surface of the cylinder liner collar must be flush or up to 0.04 mm below the engine block deck

.Maximum admissible deviation of the flatness at the engine block surface

*BE01.40-B-1013-02C

22

Install in reverse order

Check

23

Starting the engine


Do not crank the starter continuously for more than 30 seconds,
If the engine does not fire within this interval, wait approximately 1 minute to crank it again.

24

Check the engine oil pressure with the engine idling


Do not accelerate the engine until oil pressure is shown on the indicator,
The oil pressure will have to be reestablished in approximately 10 seconds.

.Engine oil pressure, minimum permissible

*BE18.00-B-1001-01A

25

Stop the engine and check for eventual leaks

.

AP18.00-B-0101G

Control the engine oil level , 5 minutes after engine shutdown.

26

Check the coolant level

Reestablish if necessary.

Test values for the head

Number

Designation

Engine 904.9/906.9

Engine 924.9

BE01.30-B-1002-02C

Maximum permissible flatness deviation of cylinder head mating surface

on overall length

mm

0,05

0,05

over a length of 150mm

mm

0,02

0,02

Engine block test values

Number

Designation

Engine 904.9, 906.9

Engine 924.9, 926.9

BE01.40-B-1013-02C

Maximum admissible deviation of the flatness at the engine block surface

On the total length

mm

0,030

0,030

on a 150 mm length

mm

0,015

0,015

Oil pressure

Number

Designation

Engine 904.9, 906.9

Engine 924.9, 926.9

BE18.00-B-1001-01A

Engine oil pressure, minimum permissible

idle rotation

bar

0,5

0,5

maximum rotation

bar

2,5

2,5

Cylinder head

Number

Designation

Engine 904.9, 906.9

Engine 924.9, 926.9

BA01.30-B-1002-01C

Crankcase bolt

1st stage

Nm

20

20

2nd stage

Nm

70

70

3rd stage

Nm

170

170

4th stage

Nm

280

280

5th stage

Graus

90

90

6th stage

Graus

90

90

Cylinder head

Number

Designation

Engine 904.9, 906.9

Engine 924.9, 926.9

BA01.30-B-1005-01C

Gear lever support bolt

Trucks with advanced cab and buses

Nm

50

50

Coolant pump, thermostat

Number

Designation

Engine 904.9, 906.9

Engine 924.9, 926.9

BA20.10-B-1003-01B

Connection part of the cooling pump in the thermostatic valve head/cover

Nm

50

50

Remove/install cylinder head
Remove/install cylinder head

904 589 01 63 00

Lifting device

422 589 00 09 00

Socket

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