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B–20

ENGINE

4. Insert the piston ring into the cylinder by hand and

use the piston to push it to the bottom of the ring

travel.

5. Measure each piston ring end gap with a feeler

gauge.

• If the piston ring end gap exceeds the

maximum end gap, replace the piston, piston

pin, piston ring and connecting rod as a single

unit.

Standard end gap:

Top: 0.16—0.31 mm {0.0063—0.012 in}

Second: 0.33—0.48 mm {0.0130—0.0189 in}

Oil (rail): 0.20—0.70 mm {0.0079—0.0275 in}

Maximum end gap:

1.0 mm {0.0393 in}

End Of Sie

CRANKSHAFT INSPECTION

A6E242411301E01

1. Install the main bearing cap. (See B–30 Main Bearing Caps Assembly Note.)

2. Measure the crankshaft end play.

• If not as specified, replace the thrust bearing

or crankshaft so that the specified end play is

obtained.

Standard end play:

0.22—0.45 mm {0.0087—0.0177 in}

Maximum end play:

0.55 mm {0.022 in}

3. Remove the main bearing cap. (See B–11 Main

Bearing Cap Disassembly Note.)

4. Measure the crankshaft runout.

• If the crankshaft runout exceeds the maximum runout, replace the crankshaft.

Maximum runout:

0.05 mm {0.0019 in}

L8, LF

L3, L3 (with variable valve timing mechanism)

AME2224E104

AME2224E034

AME2224E035

AME2224E311

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Mazda LF Wartungshandbuch Seite 37