Machine valve seat rings

AR05.30-P-4511B

Machine valve seat rings

11.11.11



Remove/install

1

Remove valves

AR05.30-P-3511B

2

Inspect valve guide

if necessary, after inspecting:

Fit a new valve guide

AR05.30-P-3731A

3

Machine valve seats

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

*BE05.30-P-1014-03B

Valve seat turning device

4

Inspect valve seat for leaks

5

Measure valve seat width

Correct valve seat width if necessary
(angle γ).

6

Replace valve, check for leaks

Vacuum testing unit

7

Measure distance of valve stem end to camshaft bearing base or valve setback to cylinder head

 Valve stem end to camshaft bearing base.

To do this insert 5 mm dia. round material into middle of the camshaft bearing base and measure dimension with vernier caliper.

*BE01.30-P-1009-02A

 Measure valve setback to cylinder head

AR05.30-P-4100-01A

 If measurement is less than minimum dimension, no correct valve clearance compensation is possible.

Replace valve seat rings

AR05.30-P-3831A

8

Install in the reverse order

Number

Designation

Engine 604,
605, 606

BE05.30-P-1014-03B

Width of valve seat (b)

Inlet

mm

1.0 to 1.5

Outlet

mm

0.8 to 1.5

See picture

AR05.30-P-4511B

BE05.30-P-1015-03B

Valve seat angle (α)

Inlet

°

45° (-15')

Outlet

°

45° (-15')

See picture

AR05.30-P-4511B

BE05.30-P-1016-03B

Correction angle (γ)

Inlet

°

15 (15')

Outlet

°

25 (15')

See picture

AR05.30-P-4511B

BE05.30-P-1017-03B

Radial runout of valve seat

Inlet

mm

0.03

Outlet

mm

0.03

Number

Designation

Engine
604, 605, 606

BE01.30-P-1008-02A

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

Exhaust valve

mm

1.3 to 1.7

Intake valve

mm

1.3 to 1.7

See picture

AR01.30-P-7162-01A

BE01.30-P-1009-02A

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

mm

23.7 to 24.2

See picture

AR01.30-P-7162-01A