Check, machine valves

AR05.30-D-4201A

Check, machine valves

11.11.11

 

Remove/install

1

Remove cylinder head

Engine 602.980

AR01.30-D-5800R

Engine 602.982

AR01.30-P-5800HW

Engine 602.984/985

AR01.30-D-5800S

Engine 601.943

AR01.30-D-5800B

2

Remove valve springs and valve stem seals

AR05.30-D-3510-02A



*111589256100



*601589015900



*606589003700

3

Remove valves



Checking

4

Clean valves and carry out a visual inspection

 Valves with scorched valve disk, with insufficient height (h) of valve disk or with used or scored valve stem, should be replaced.

*BE05.30-N-1002-01D

5

Measure concentricity at valve stem and valve seat

Replace, if necessary

*BE05.30-N-1009-01D

 Disposal of sodium-filled valves

OS05.30-P-0001-01A

Machining

6

Machine valve seats

Valve grinding machine



Observe operator's manual for machining tool and adjustment angle.

*BE05.30-N-1008-01D

*BE05.30-N-1003-01D

*BE05.30-N-1002-01D

7

Once again measure stroke at valve stem and valve seat

 Replace valve if the stroke is too large or the height is (h) is too small

*BE05.30-N-1002-01D

8

Measure valve setback to cylinder head

if necessary 

AR05.30-D-4100-01A

Machine valve seat rings

AR05.30-D-4511B



*001589532100



*343589004000

Depth gage

*BE01.30-N-1006-02D

*BE01.30-N-1010-02D

9

Replace valve, check for leaks

Vacuum testing unit

10

Install in the reverse order

Number

Designation

Engine 601.943

Engine 602.980/982/983/984/985

BE05.30-N-1002-01D

Height of valve disk (h)

Exhaust when new

mm

1.75-2.05

1.75-2.05

Exhaust limit value

mm

1.6

1.6

Intake when new

mm

1.75-2.05

1.75-2.05

Intake limit value

mm

1.6

1.6

See picture

AR05.30-D-4201A

AR05.30-D-4201A

BE05.30-N-1003-01D

Valve seat angle (α)

Exhaust

°

45° -15'

45° -15'

Intake

°

45° -15'

45° -15'

See picture

AR05.30-D-4201A

AR05.30-D-4201A

BE05.30-N-1008-01D

Width of valve seat

Exhaust

mm

2

2

Intake

mm

2

2

BE05.30-N-1009-01D

Concentricity of valve seat to valve stem

Exhaust

mm

0.03

0.03

Intake

mm

0.03

0.03

Number

Designation

Engine 601.943

Engine 602.980/
982/983/984/985

BE01.30-N-1006-02D

Valve setback (a) with new valves and new valve seat rings

Exhaust valve

mm

0.1 to 0.7

0.1...0.5

Intake valve

mm

0.1 to 0.7

0.1...0.5

See picture

AR01.30-D-7162B

AR01.30-D-7162A

BE01.30-N-1010-02D

Distance from end of valve stem to base of camshaft bearing (T)

mm

20.4 to 21.4

20.4 to 21.4

See picture

AR05.30-D-4100-01A

AR05.30-D-4100-01A