Remove/install camshaft

AR05.20-B-6292TA

Remove/install camshaft

12.02.16



Remove and install

Danger!

Risk of crush injury and obstruction while tilting the cab

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

Tilt the cab

Install: Return the cab only after the oil circuit has been supplied.



Indications on cab tilting

AH60.80-B-0003-01A

2

Remove bottom acoustic enclosure at the framework

3

Drain and collect engine oil

AR18.00-B-3035-02TA



*BA01.45-B-1002-01B



*BF18.00-B-1001-01B

4

Remove engine

Type 958.0

AR01.10-B-2400TD

Type 958.2

AR01.10-B-2400TF

5

Install engine in the assembly device

6

Remove the rocker arm system

AR05.00-B-5521TC

7

Remove tappet dipsticks (3)

8

Remove anti-vibration pulley

AR03.30-B-1600TA

9.1

Remove fuel pump

AR47.20-B-5713TA

9.2

Remove cover or holder of reversing pulley before the camshaft (1) in the engine block

 Replace gasket.

10

Remove all injecting units

AR07.15-B-8950TA

11

Rotate engine inside of the assembly device

 Rotate engine approximately 180° so that the tappets (4) are released from the camshaft (1)

12

Remove crankcase

AR01.45-B-7500TC

13.1

Remove position sensor of the camshaft (B16) or TDC sensor cylinder 1 (camshaft) (B16) out of the engine block

Install: Replace the O-ring (2) and press the position sensor of the camshaft (B16) or TDC sensor cylinder 1 (camshaft) up to the end.

13.2

Pull TDC sensor (B48) out of the engine block

Install: Replace O-ring (2) and press TDC sensor (B48) up to the end.

14

Assemble timing case (6)

Engine 904.9

AR01.60-B-8200TA

Engine 906.9

AR01.60-B-8200TF

15

Remove crankshaft (1) from the engine block

AR05.20-B-6292-02TA



*904589021400

16

Remove tappets (4) from the engine block

 Identify the valve tappet (4) in relation to the engine block.



Inspect

17

Check the tappets (4)

 In case of wear or damages:



Replace the corresponding valve tappet (4).

External diameter of the valve tappet

*BE05.30-B-1003-04C

Drill of tappet in the engine block

*BE05.30-B-1004-04C

18

Check hardness at the circumference and at the elevations of the camshaft seatings (1)

AR05.20-B-6292-03TA

Diameter of the bushing journal of the camshaft in every point of the bushing

*BE05.20-B-1005-04D

Hardness of journals and rebounds

*BE05.20-B-1001-04D

Variation of concentricity of the command axle

*BE05.20-B-1002-04D

Elevation of the valve seating

*BE05.20-B-1003-04D

Elevation of the injecting unit seating

*BE05.20-B-1004-04D



*000589202100



*001589532100



*363589022100

19

Install in reverse order

20

Fuel oil system

AR18.00-B-1600TA

Número

Denominação

Engine 902.9; 906.9; 926.9

Engine 904.9; 924.9

BE05.20-B-1001-04D

Bearing pin and shoulder hardness

of cams and journals

Rc

57...63

57...63

BE05.20-B-1002-04D

Maximum permissible radial runout of the camshaft, supported by external journals

in the gear housing

mm

0,020

0,020

in base circle of cams

mm

0,025

0,025

in the crankshaft journals

mm

0,030

0,030

BE05.20-B-1003-04D

Cam rise for valves, above the base circle

intake, minimum

mm

7,3

7,3

exhaust, minimum

mm

8,2

8,2

BE05.20-B-1004-04D

Cam rise for injectors, above the base circle

minimum

mm

13,8

13,8

BE05.20-B-1005-04D

Drive shaft journals diameter

new crankshaft

mm

67,911...67,938

67,911...67,938

Número

Denominação

Engine 902.9; 904.9, 906.9

BE05.30-B-1003-04C

Pushes external diameter

Normal

mm

17.944...17.965

Repair I

mm

-

BE05.30-B-1004-04C

Pushes housing diameter in the block

Normal

mm

18.000...18.018

Repair I

mm

-

Número

Denominação

Engine 904.9; 906.9

BA01.45-B-1002-01B

Oil pan drain plug

M20x1.5

Nm

65

M22x1.5

Nm

-

M26x1.5

Nm

85

Número

Denominação

Engine 904.911/918/919, 904.920/924/925, 904.938/943/945, 904.957/962/965, 904.966/967/972, 904.973

Engine 906.917/918/924, 906.953/969/975, 906.977/983/985

BF18.00-B-1001-01B

Engine oil

Check the correct level

Oil pan

liters

15.0

28

Filter

liters

0.8

1.3