DR ALL-TERRAIN Wartungshandbuch PDF herunterladen (Seite 191)

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101

ENGINE TOP END 5-9

Specifications

Item Standard Service Limit

Valve/Valve Guide Clearance

(Wobble Method):

Exhaust

0.09 ∼ 0.17 mm (0.0035 ∼ 0.0067 in.) 0.37 mm (0.0146 in.)

Inlet 0.03 ∼ 0.11 mm (0.0012 ∼ 0.0043 in.) 0.31 mm (0.0122 in.)

Valve Seat Cutting Angle 45°, 32°, 60° –––

Valve Seating Surface:

Outside Diameter:

Exhaust

25.2 ∼ 25.4 mm (0.992 ∼ 1.000 in.)

–––

Inlet

29.4 ∼ 29.6 mm (1.157 ∼ 1.165 in.)

–––

Width:

Exhaust

0.5 ∼ 1.0 mm (0.02 ∼ 0.04 in.)

–––

Inlet

0.5 ∼ 1.0 mm (0.02 ∼ 0.04 in.)

–––

Valve Spring Free Length:

Exhaust 41.3 mm (1.626 in.) 39.5 mm (1.555 in.)

Inlet 41.3 mm (1.626 in.) 39.5 mm (1.555 in.)

Cylinder, Piston

Cylinder Inside Diameter 84.994 ∼ 85.006 mm (3.3462 ∼ 3.3467 in.) 85.10 mm (3.350 in.)

Piston Diameter

84.964 ∼ 84.979 mm (3.3450 ∼ 3.3456 in.) 84.81 mm (3.3390 in.)

Piston/Cylinder Clearance 0.015 ∼ 0.042 mm (0.0006 ∼ 0.0017 in.) –––

Piston Ring/Groove

Clearance:

Top 0.04 ∼ 0.08 mm (0.0016 ∼ 0.0032 in.) 0.18 mm (0.0071 in.)

Second 0.03 ∼ 0.07 mm (0.0012 ∼ 0.0028 in.) 0.17 mm (0.0067 in.)

Piston Ring Groove W idth:

Top

1.03 ∼ 1.05 mm (0.0405 ∼ 0.0413 in.) 1.13 mm (0.0445 in.)

Second 1.02 ∼ 1.04 mm (0.0402 ∼ 0.0409 in.) 1.12 mm (0.0441 in.)

Piston Ring Thickness:

Top

0.97 ∼ 0.99 mm (0.0382 ∼ 0.0390 in.) 0.90 mm (0.035 in.)

Second 0.97 ∼ 0.99 mm (0.0382 ∼ 0.0390 in.) 0.90 mm (0.035 in.)

Piston Ring End Gap:

Top 0.20 ∼ 0.30 mm (0.0079 ∼ 0.0118 in.) 0.60 mm (0.0236 in.)

Second 0.30 ∼ 0.45 mm (0.0118 ∼ 0.0177 in.) 0.75 mm (0.0295 in.)

Oil 0.20 ∼ 0.70 mm (0.0079 ∼ 0.0276 in.) 1.00 mm (0.0394 in.)

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