3-70 ENGINE
• Remove the conrods, and mark them to identify the cylinder
position.
• Inspect the bearing surfaces for any sign of fusion, pitting,
burn, or flaws. If any, replace them with a specified set of
bearings.
CONROD-BIG END BEARING SELECTION
• Place the plastigauge axially along the crank pin, avoiding the
oil hole, as shown.
% 09900-22301: Plastigauge
• Tighten the conrod cap bolts to the specified torque, in two
stages. (!3-73)
"
• The number faces the intake side
1.
• Remove the bearing caps and measure the width of the com-
pressed plastigauge using the envelope scale. This measure-
ment should be taken at the widest part of the compressed
plastigauge.
$ Conrod big end oil clearance:
Standard: 0.032 – 0.056 mm (0.0013 – 0.0022 in)
Service Limit: 0.080 mm (0.0031 in)
• If the oil clearance exceeds the service limit, select the speci-
fied bearings from the bearing selection table.
* Apply engine oil to the bearing cap bolt.
* Never rotate the crankshaft or conrod when a piece
of plastigauge is installed.
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