Remove/install valves

AR05.30-S-3511E

Remove/install valves

22.07.2014

MODEL

447 with ENGINE 651

01

Assembly device

04

Thrust piece

1

Cylinder head

02

Counterholder

05

Sliding piece

03

Assembly lever

06

Lever

04

Thrust piece

3

Valve spring

6

Valve

07

Magnetic finger

4

Valve keeper

2

Upper valve spring retainer

5

Lower valve spring retainer

 

Remove/install

1

Remove cylinder head

AR01.30-S-5800E

2

Clamp cylinder head (1) on the assembly device (01)

 See Operator's Manual.

 Assembly tool

*271589005900

3

Put together valve assembly tool and mount on the assembly device (01)

 To do this mount retaining fork on sliding piece (05) and place thrust piece (04) vertically on upper valve spring retainer (2).

 Valve assembly tools kit

*111589256100

4

Press valve springs (3) together with valve assembly tool and remove valve keepers (4)


Ensure the valve keepers (4) are securely seated.
This avoids unfastening of the valve (6).

 Use tweezers or magnetic finger (07).

 Magnetic finger

*116589066300

5

Remove upper valve spring retainer (2) and valve spring (3)

 Installation: Check upper valve spring retainer (2) for damage; replace as per findings.

6

Remove valve stem seals

AR05.30-S-3500-02E

 Installation: Check lower valve spring retainer (5) for damage; replace as per findings.

 Drift

*604589004300

 Pliers

*606589003700

7

Take off lower valve spring retainer (5)

8

Remove cylinder head (1) from assembly device (01) and take out valves (6)

 Check user interface of valve stems for roughness and ridging and check valve seat rings for roughness of the user interface (visual inspection or a needle probe). Replace valves (6) with a rough stem surface or ridging.

9

Install in the reverse order