Open Library - открытая библиотека учебной информации

Открытая библиотека для школьников и студентов. Лекции, конспекты и учебные материалы по всем научным направлениям.

Категории

Строительство ENGINE TOP END
просмотров - 350

Valves

ENGINE TOP END 5-25

Valve Clearance Inspection

• Refer to the Valve Clearance Inspection in the Periodic Maintenance chapter.

Valve Removal

• Remove the cylinder head (see Cylinder Head Removal).

• Use a valve spring compressor assembly to press down the valve spring retainer, and remove the split keepers.

Special Tools -Valve Spring Compressor Assembly: 57001 -241 [A] Valve Spring Compressor Adapter, ф22: 57001-1202 [B]

Valve Installation

• Check to see that the valve [A] moves smoothly up and down in the guide.

• Check to see that the valve seats properly in the valve seat. If it does not, repair the valve seat.

• Replace the oil seal [B] with a new one.

• Apply a thin coat of molybdenum disulfide grease to the valve stem before valve installation.

• Be sure to install the inner [C] and outer [D] spring seats under the inner [E] and outer [F] springs.

OInstall the springs so that the closed coil end [G] is facing toward the valve seat (downwards).

• Install the spring retainer [H], press it down with the valve spring compressor assembly, and fit the split keepers [I] into place.

Special Tools -Valve Spring Compressor Assembly: 57001 -241 Valve Spring Compressor Adapter, ф22: 57001-1202

• Install the other removed parts.

Valve Guide Removal

• Remove:

Valve (see Valve Removal) Oil Seal Spring Seats

• Heat the area around the valve guide to about 120 ~150°C (248 ~302°F), and hammer lightly on the valve guide arbor [A] to remove the guide from the top of the head.

Special Tool - Valve Guide Arbor, ф5.5: 57001-1021


Читайте также


  • - ENGINE TOP END 5-35 Cylinder, Piston

    Piston Diameter • Measure the outside diameter [A] of each piston 5 mm [B] up from the bottom of the piston at a right angle to the direction of the piston pin. • If the measurement is under the service limit, replace the piston. Piston Diameter Standard: 73.942 ~ 73.957 mm (2.9111 ~ 2.9117 in.) Service Limit: 73.79 mm (2.9051 in.) Boring, Honing When boring and honing a cylinder, note the following: OThere is one oversize piston available. Oversize pistons require... [читать подробенее]


  • - ENGINE TOP END 5-19

    NOTE Camshaft, Camshaft Chain ENGINE TOP END CAUTION The camshaft caps are machined with the cylinder head. So, if a cap is installed in a wrong location, the camshaft may seize because of improper oil clearance in the bearings. CAUTION • First tighten down the two camshaft cap bolts (... [читать подробенее]


  • - ENGINE TOP END 5-13

    NOTE Clean Air System ENGINE TOP END Vacuum Switch Valve Test Using the vacuum gauge and a syringe, inspect the vac­uum switch operation as follows. • Remove a vacuum switch valve. • Connect a vacuum gauge [A] and syringe [B] or fork oil level gauge to the vacuum hoses as shown. Air Flow [C] Special Tool - Fork Oil Level Gauge: 57001-1290 • Gradually raise the vacuum (lower the pressure) applied to the vacuum switch valve, and check the valve opera­ tion.... [читать подробенее]


  • - ENGINE TOP END

    Valves ENGINE TOP END 5-25 Valve Clearance Inspection • Refer to the Valve Clearance Inspection in the Periodic Maintenance chapter. Valve Removal • Remove the cylinder head (see Cylinder Head Removal). • Use a valve spring compressor assembly to press down the valve spring retainer, and remove the split keepers. Special Tools -Valve Spring Compressor Assembly: 57001 -241 [A] Valve Spring Compressor Adapter, ф22: 57001-1202 [B] Valve... [читать подробенее]


  • - ENGINE TOP END 5-35 Cylinder, Piston

    Piston Diameter • Measure the outside diameter [A] of each piston 5 mm [B] up from the bottom of the piston at a right angle to the direction of the piston pin. • If the measurement is under the service limit, replace the piston. Piston Diameter Standard: 73.942 ~ 73.957 mm (2.9111 ~ 2.9117 in.) Service Limit: 73.79 mm (2.9051 in.) Boring, Honing When boring and honing a cylinder, note the following: OThere is one oversize piston available. Oversize pistons require... [читать подробенее]


  • - ENGINE TOP END 5-19

    NOTE Camshaft, Camshaft Chain ENGINE TOP END CAUTION The camshaft caps are machined with the cylinder head. So, if a cap is installed in a wrong location, the camshaft may seize because of improper oil clearance in the bearings. CAUTION • First tighten down the two camshaft cap bolts (... [читать подробенее]


  • - ENGINE TOP END 5-13

    NOTE Clean Air System ENGINE TOP END Vacuum Switch Valve Test Using the vacuum gauge and a syringe, inspect the vac­uum switch operation as follows. • Remove a vacuum switch valve. • Connect a vacuum gauge [A] and syringe [B] or fork oil level gauge to the vacuum hoses as shown. Air Flow [C] Special Tool - Fork Oil Level Gauge: 57001-1290 • Gradually raise the vacuum (lower the pressure) applied to the vacuum switch valve, and check the valve opera­ tion.... [читать подробенее]


  • - ENGINE TOP END

    Valves ENGINE TOP END 5-25 Valve Clearance Inspection • Refer to the Valve Clearance Inspection in the Periodic Maintenance chapter. Valve Removal • Remove the cylinder head (see Cylinder Head Removal). • Use a valve spring compressor assembly to press down the valve spring retainer, and remove the split keepers. Special Tools -Valve Spring Compressor Assembly: 57001 -241 [A] Valve Spring Compressor Adapter, ф22: 57001-1202 [B] Valve... [читать подробенее]