Check/face-grind cylinder head contact surfaces

AR01.30-B-7162TJ

Check/face-grind cylinder head contact surfaces

12.02.16



Remove

1

Remove the head (1)

AR01.30-B-5800TJ

2

Disassemble the combined injector holder

AR07.03-B-6831TJ

3

Clean the head (1)



Inspect

4

Measure the height (H) of the head (1)

 Eventually, replace the head (1).

*BE01.30-B-1001-02C

5

Check the head sealing surface (1) for porous or damaged spots

 If there are porous or damaged spots, machine the head separation surface until it gets flat.

6

Check the head (1) with regard to its flatness

AR01.30-B-5800-12TJ

Head height

*BE01.30-B-1001-02C

Admissible divergence with regard to flatness of the contact surface in the longitudinal direction

*BE01.30-B-1002-02C

Machine

7

Remove the intake (2) and exhaust(3) valves

 Mark the intake (2) and exhaust (3) valves with regard to their installation places.

AR05.30-B-3511TJ

8

Remove the Top Brake (4) valves

AR01.50-B-1000TJ

9

Machine the head separation surface to make it flat (combustion chamber side) by means of its surface machining

 After machining it, the admissible height (H) of the head (1) must not be below the prescribed value, if necessary, replace the head (1).

Head height

*BE01.30-B-1001-02C

10

Clean the head (1)



Measurement

11

Insert the intake (2) and exhaust (3) valves in the head (1)

 Pay attention to the intake (2) and exhaust (3) valves marks.

12

Measure the valve's setback with regard to the head separation surface (K) at both intake (2) and exhaust (3) valves using the dial gauge (5) and the dial gauge support (6)

 The valve's setback with regard to the head's separation surface (K) and the difference between the two ends of the intake valves rods (J) must be within the admissible tolerance range.

AR05.30-B-4100-01TJ

Height of the valve with regard to the head to the cylinder head division face.

*BE05.30-B-1001-01D

Intake valve admissible difference measured between the cylinder head and the valve rod tip.

*BE05.30-B-1013-01D



*001589532100



*366589002105



*343589004000



*363589022100

In the case of divergences from the theoretical values, replace the cylinder head.



Install

13

Install the Top Brake (4) valves

AR01.50-B-1000TJ

14

Install the intake (2) and exhaust (3) valves

 Pay attention to the intake (2) and exhaust (3) valves marks.

If the valve seat rings have been machined or replaced, install new intake (2) or exhaust (3) valves.

AR05.30-B-3511TJ

15

Install the combined injector holder

AR07.03-B-6831TJ

16

Install the head (1)

AR01.30-B-5800TJ

Número

Denominação

Engine 926.9

Engine 924.9

BE01.30-B-1001-02C

Height of cylinder head

standard

mm

107.9...108.1

107.9...108.1

minimum after machining

mm

106.9

106.9

BE01.30-B-1002-02C

Maximum permissible flatness deviation of cylinder head mating surface

on overall length

mm

0.07

0.05

over a length of 150mm

mm

0.02

0.02

Número

Denominação

Engine 924.9, 926.9

BE05.30-B-1001-01D

Distance between the valves faces and the head

Intake

Normal

mm

1.1...1.5

Maximum repair

mm

1.7

Exhaust

Normal

mm

1.1...1.5

Maximum repair

mm

2.0

BE05.30-B-1013-01D

Allowable difference of the intake valve measured between the cylinder head and the valve rod end

mm

0.3