Doosan GL08K - Engine Reassembly Procedures

Maintenance - 73 -
c) Connecting rod bearing clearance
 Install the connecting rod bearing
in the connecting rod bearing cap,
tighten the connecting rod cap
bolts to the specified torque, then
measure the inside diameter.
 Compare the two values obtained
through measurement of connecting
rod bearing inside diameter with the
outside diameters of crankshaft pins
to determine the oil clearance.
 If the clearance deviates from the specified range, have the crankshaft journals and pins
ground and install undersize bearings.
d) Oil clearance between crankshaft and bearing (Method 2 : plastic gauge)
 Assemble the crankshaft on the cylinder block and put plastic gauge on the journal and pin of
crankshaft and then after assembling bearing cap, tighten the bolts at the specific torque.
Again after disassembling the bearing cap by removing the bolts, take out the flatted plastic
gauge and measure the width of plastic gauge by means of plastic gauge measuring scale.
This is the oil clearance.
 The oil clearance too can be easured in the same manner.
e) Bearing spread and crush
 Inspection
Check to see that the bearing
requires a considerable amount of
finger pressure at reassembly
operation.
EAMD059S
Torque
1st Step 4 kg
• m
2nd Step 60°
Standard 76.000 ~ 76.019 mm
EAMD060I
Standard Limit
0.034
~ 0.098 mm 0.25 mm
EDM2046S