Service Manual — page 367 of 715

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CRANKSHAFT/TRANSMISSION 9-21
Crankshaft and Connecting Rods
Connecting Rod Bend Inspection
• Remove     the connecting rod big end bearing inserts, and
  reinstall the connecting rod big end cap.
• Select an arbor [A] of the same diameter as the connect-
  ing rod big end, and insert the arbor through the connect-
    ing rod big end.
•   Select an arbor of the same diameter as the piston pin
    and at least 100 mm (3.94 in.) long, and insert the arbor
    [B] through the connecting rod small end.
•   On a surface plate, set the big-end arbor on V block [C].
•   With the connecting rod held vertically, use a height
    gauge to measure the difference in the height of the
    arbor above the surface plate over a 100 mm (3.94 in.)
    length to determine the amount of connecting rod bend.
    If the connecting rod bend exceeds the service limit, the
    connecting rod must be replaced.
    Connecting Rod Bend
      Service Limit: TIR 0.2/100 mm (0.008/3.94 in.)

Connecting Rod Twist Inspection
• With the big-end arbor [A] still on V block [C], hold the
  connecting rod horizontally and measure the amount that
    the arbor [B] varies from being paralleled with the surface
    plate over a 100 mm (3.94 in.) length of the arbor to de-
    termine the amount of connecting rod twist.
    If the connecting rod twist exceeds the service limit, the
    connecting rod must be replaced.
    Connecting Rod Twist
      Service Limit: TIR 0.2/100 mm (0.008/3.94 in.)

Connecting Rod Big End Side Clearance
Inspection
•○Measure    connecting rod big end side clearance.
  Insert a thickness gauge [A] between the big end and ei-
    ther crank web to determine clearance.
    Connecting Rod Big End Side Clearance
      Standard:     0.13 ∼ 0.38 mm (0.0051 ∼ 0.0150 in.)
      Service Limit:   0.58 mm (0.023 in.)
    If the clearance exceeds the service limit, replace the con-
    necting rod with a new one and then check clearance
    again. If the clearance is too large after connecting rod
    replacement, the crankshaft also must be replaced.