Do not compress too much, to avoid damage to the valve spring

VALVES AND VALVE SPRINGS ENG

F-9

VALVES AND VALVE SPRINGS ENG

Pay attention to the installation direction of the rocker arm shaft. Ensure that the threaded part is facing outward

5. Install:

• Rocker arm shaft fixing plate Ø

INSTALLING THE CAMSHAFT AND THE ROCKER ARMS

1. Lubricate

• Camshaft Ø

Camshaft: Molybdenium disulphide oil Camshaft bearing: engine oil

VALVESANDVALVESPRINGS VALVES AND VALVE SPRINGS REMOVAL

1. Remove:

• Valve cotters Ø

NOTE:

Attach a valve spring compressor and attachment Ø between the valve spring retainer and cylinder head to remove the valve cotters

CAUTION:

	Valve spring compressor: 90890-04019
Attachment: 90890-04108

CHECKING VALVES AND VALVE SPRINGS

1. Measure:

• Valve stem diameter

If not as specified, replace it

	Valve stem diameter: Intake:
4.475 ~ 4.490 mm <Limit: 4,445 mm> Exhaust: 4.460 ~ 4.475 mm <Limit: 4,430 mm>

2. Measure:

•

Order	Job name/part name	Quantity	Remarks
	Removal of valves and valve springs Cylinder head Rocker arm, rocker arm shaft and camshaft Valve cotters     Valve spring Valve (intake) Valve (exhaust) Valve guide catch Spring seat			Remove the parts in order. See section on CYLINDER HEAD See section on ROCKER ARM SHAFT   See section on REMOVAL OF VALVES AND VALVE SPRINGS
		See section on INSTALLATION OF VALVES AND VALVE SPRINGS
	Reverse the removal procedure for installation

Run-out (valve section)

If not as specified, replace it

Run-out limit: 0.01mm

3. Measure:

Free length (valve spring)

If not as specified, replace it

	Valve spring free length: 41.94
<Limit: 39.84 mm>

VALVES AND VALVE SPRINGS ENG

4. Measure:

• Spring tilt

If not as specified, replace it

Spring tilt limit: 1.9 mm (2.5º)

5. Check:

• Spring surface face

Replace if worn, pitted or scratched

6. Measure:

• Valve guide inside diameter If not as specified, replace it

	Valve guide inside diameter: Intake:
4.500 ~ 4.512 mm <Limit: 4.542 mm> Exhaust: 4.500 ~ 4.512 mm <Limit: 4.542 mm>

7. Measure:

Stem to guide clearance = Valve guide inside diameter- Valve stem diameter

If not as specified, replace the valve guide

	Stem to guide tolerance limit: Intake:
0.08mm Exhaust: 0.10mm

Дата добавления: 2014-12-23