Mazda LF Wartungshandbuch PDF herunterladen (Seite 36)

ENGINE

B–19

End Of Sie

OIL JET VALVE INSPECTION

A6E242410730E02

1. Apply compressed air to oil jet valve A and verify

that air passes through oil jet valve B.

• If not ventilation,replace the oil jet valve.

Air pressure:

216—274 kPa {2.2—2.7kgf•cm

31.4—39.7

psi}

End Of Sie

PISTON INSPECTION

A6E242411010E01

Caution

•

••

• The piston, piston ring and connecting rod cannot be disassembled.

•

••

• When replacing the piston, piston pin, piston ring and connecting rod, replace them together as a

single unit.

1. Measure the outer diameter of each piston at right

angle 90° to the piston pin, 10.0 mm {0.40 in}

above the under of the piston.

• If the piston diameter is below the standard

diameter, replace the piston, piston pin, piston

ring and connecting rod as a single unit.

Piston diameter

L8:

82.965—82.995 mm {3.2664—3.2675 in}

LF, L3, L3 (with variable valve timing

mechanism):

87.465—87.495 mm {3.4435—3.4446 in}

2. Measure the piston-to-cylinder clearance.

• If not as specified, replace the piston, piston pin, piston ring and connecting rod as a single unit.

Standard clearance:

0.025—0.045 mm {0.0010—0.0017 in}

Maximum clearance:

0.11 mm {0.0043 in}

3. Measure the piston ring-to-ring groove clearance

around the entire circumference.

• If the piston ring-to-ring groove clearance

exceeds the maximum clearance, replace the

piston, piston pin, piston ring and connecting

rod as a single unit.

Standard clearance:

Top: 0.03—0.08 mm {0.0012—0.0031 in}

Second: 0.03—0.07 mm {0.0012—0.0027in}

Oil: 0.03—0.07 mm {0.0012—0.0027 in}

Maximum clearance:

Top: 0.17 mm {0.0067 in}

Second, Oil: 0.15 mm {0.0059 in}

AME2224E105

AME2224E030

AME2224E029

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