Check/face-grind cylinder head contact surfaces

AR01.30-B-7162C

Check/face-grind cylinder head contact surfaces

12.02.16



Remove

1

Remove the valve head.

AR01.30-B-5800D

2

Remove the injection nozzles.

AR07.03-B-6830B

3

Remove the valves (3 and 4).

AR05.30-B-3511B

4

Remove the constant throttle.

For engines with top-brake

AR01.50-B-1000B



Check

5

Clean the valve head (5).

6

Check the flatness of the bottom face of the head.

AR01.30-B-5800-12B

Maximum allowable flatness deviation at the bottom face of the head.

*BE01.30-B-1002-02B

7

Check the height (H) of the head.

*BE01.30-B-1001-02B

*BE01.30-B-1001-02B

Rework

8

Rework the bottom face of the head.

Preserving the roughness of the bottom face of the head is essential.

*BE01.30-B-1004-02B

The height (H) of the head may not be less than the minimum allowable value after rework.

*BE01.30-B-1001-02B

Maximum allowable deformation at the bottom face of the head

*BE01.30-B-1002-02B

Data for machining:

Rotation ................. N = 1400/min (rpm)

Feed ................... 800-1000 mm/min

Cutting speed ....... Vs = 27m/s

Grinding wheel feed for each pass..0.03

Type of grinding wheel ...... Tyrolit 500C36 5v 15

................................ Norton 39C 36F8 VK

Grinding wheel diameter..........370 mm

The rotation (n) is determined by the diameter of the wheel;

n = (Vs. 1000.60) : (d.3,1416)



Measure

9

Place the valves (3 and 4) on the head (5).

Fit the intake and exhaust valves (3 and 4) onto their respective seats.

10

Measure the distance (K) between the valve faces and the bottom face of the head.

AR05.30-B-4100-01B



*001589532100



*343589004000

Rework the seats if the distance (K) is inconsistent with the recommendations.

*BE05.30-B-1010-03B



Install

11

Install the constant throttle.

AR01.50-B-1000B

12

Mount the valves (3 and 4) onto the head.

AR05.30-B-3511B

13

Install the injection nozzles.

AR07.03-B-6830B

14

Install the head.

AR01.30-B-5800D

Número

Denominação

Engine 475.9, 476.9

BE01.30-B-1001-02B

Cylinder head height (A)

Standard

mm

113,9...114,0

minimum after machining

mm

113,4

BE01.30-B-1002-02B

Maximum admissible deformation of the cylinder head bottom surface

mm

0,015

BE01.30-B-1004-02B

Maximum roughness at the cylinder head bottom surface

mm

0,016

Número

Denominação

Engine 475.9; 476.9

BE05.30-B-1010-03B

Distance between the valve face (intake and exhaust) and the head loser face

mm

0.7...1.1