DR ALL-TERRAIN Wartungshandbuch PDF herunterladen (Seite 214)

100

101

5-32 ENGINE TOP END

Valves

Valve Guide Installation

•

Lightly oil the valve guide outer surface.

•

Using the valve guide arbor [A], drive the valve guide [B]

until its flange touches the cylinder head.

Special Tool - Valve Guide Arbor, 5: 57001-1203

•

Ream the valve guide with the valve guide reamer [A] , it

may be necessary to ream the guide even if the old guide

is reused.

Special Tool - Valve Guide Reamer, 5: 57001-1204

Valve-to-Guide Clearance Measurement

If a small bore gauge is not available, inspect the valve

guide wear by measuring the valve to valve guide clearance

with the wobble method as indicated below.

•

Insert a new valve [A] into the guide [B] and set a dial

gauge against the stem perpendicular to it as close as

possible to the cylinder head mating surface.

•

Move [C] the stem back and forth to measure valve/valve

guide clearance.

•

Repeat the measurement in a direction at a right angle to

the first.

If the reading exceeds the service limit, replace the guide.

NOTE

○

The reading is not actual valve/valve guide clearance

because the measuring point is above the guide.

Valve/Valve Guide Clearance (Wobble Method)

Standard:

Exhaust

0.09 ∼ 0.17 mm (0. 0035 ∼ 0.0067 in.)

Inlet

0.03 ∼ 0.11 mm (0.0012 ∼ 0.0043 in.)

Service Limit:

Exhaust

0.37 mm (0.0146 in.)

Inlet

0.31 mm (0.0122 in.)

1 2 ... 209 210 211 212 213 214 215 216 217 218 219 ... 593 594

Kommentare zu diesen Handbüchern

Keine Kommentare

DR ALL-TERRAIN Wartungshandbuch Seite 214

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Rasenmäher DR ALL-TERRAIN