Plastic Gauge - Hitachi 6HK1 Workshop Manual

14A-4 Service Information Guide (All models)
1. Using the plasti-gauge
Type
： 0.025 to 0.076 mm { 0.00098
PG-1 (Green)
： 0.051 to 0.152 mm { 0.00201
PR-1 (Red)
： 0.102 to 0.229 mm { 0.00402
PB-1 (Blue)
Method for measuring the gap between the connecting
rod bearing and crank pin
Clean the connecting rod and bearing, and assemble them
on the connecting rod. Cut the plasti-gauge to the width
of the crank pin and lay it parallel avoiding the crank pin
oil hole. Align the markings on the connecting rod and on
the cap to assemble it on the crank pin. Apply
molybdenum disulfide to the threaded portion and seat
surface of the tightening bolts. Alternately tighten them
so that the cap is at the specified torque.
Caution：
・ Never move the connecting rod when the
plasti-gauge is in use.
Gently remove the cap and connecting rod and use a scale
printed on the packaging of the plasti-gauge to measure
the flattened plasti-gauge.

Plastic gauge

Measurable range
to 0.00299 in }
to 0.00598 in }
to 0.00902 in }
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Method for measuring the gap between the crank bearing
and crank journal
Clean the installation surfaces of the cylinder block and
crankcase bearing, and assemble them on the cylinder
block and crankcase. Gently place the crankshaft on the
cylinder block, and lock it into place by turning it
approximately 30 degrees. Cut the plasti-gauge to the
width of the crank journal and lay it parallel avoiding the
journal oil hole. Gently place the crankcase on the
cylinder block, and apply molybdenum disulfide to the
threaded portion and seat surface of the tightening bolts.
Tighten in the specified order at the specified torques.
Caution：
・ Never move the connecting rod when the
plasti-gauge is in use.
Gently remove the crankcase and use a scale printed on
the packaging of the plasti-gauge to measure the flattened
plastic gauge.