Machine valve seat rings

AR05.30-D-4511B

Machine valve seat rings

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

4

Inspect valve guide

if necessary, after inspecting:

Replace valve guide.

5

Measure valve setback to cylinder head

 If the specified value is exceeded:

AR05.30-D-4100-01A

Replace valve seat ring



*001589532100



*343589004000

Depth gage

*BE01.30-N-1006-02D

*BE01.30-N-1010-02D

6

Machine valve seats

 Observe tool manufacturer's operating instructions, maintain dimensions in accordance with test and setting values.

Use forming cutter for machining the valve seats so that valve seat width and upper and lower correction angle are fixed.

*BE05.30-N-1001-03D

Valve seat turning device

7

Replace valve, check for leaks

Vacuum testing unit

8

Measure valve setback to cylinder head

 If the specified value is exceeded:

AR05.30-D-4100-01A

Replace valve seat ring



*001589532100



*343589004000

Depth gage

*BE01.30-N-1006-02D

*BE01.30-N-1010-02D

9

Install in the reverse order

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

Number

Designation

Engine
601.943

Engine 602.980/982/983/984/985

BE05.30-N-1001-03D

Width of valve seat (b)

Intake

mm

1.2 to 2.0

1.2 to 1.7

Exhaust

mm

1.2 to 2.0

1.5 to 2.0

See picture

AR05.30-D-4511B

AR05.30-D-4511B

Valve seat angle (α)

Intake

°

45° -15'

45° -15'

Exhaust

°

45° -15'

45° -15'

See picture

AR05.30-D-4511B

AR05.30-D-4511B

Correction angle (γ)

Intake

°

65°15'

15°15'

Exhaust

°

65°15'

15°15'

See picture

AR05.30-D-4511B

AR05.30-D-4511B

Radial runout of valve seat

Intake

mm

0.05

0.03

Exhaust

mm

0.05

0.03