Doosan AD158TI, Руководство по эксплуатации и техническому обслуживанию

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Disassembly and assembly of major components - 92 -
(5) Connecting rod
Distortion and parallel
Install the measurement tester as figure.
Measure the distortion of the bigger and
smaller end bearing holes after that do as
regard parallel of both holes and if abnor-
mal, replace the connecting rod.
Amounts of wear
●
After assembling the connecting rod in the crankshaft measure the clearance between connecting
rod bigger hole and crank pin diameter using filler gauge.
●
Assemble the connecting rod in the piston and then measure the clearance of these parts.
●
If it is more than the use limit value, replace the connecting rod.
(6) Piston reassembling
●
After heating the piston at the piston
heater for about 5 min (120 ~ 150°C), by
aligning the piston pin hole with the pin
hole of connecting rod
′
s smaller end,
insert the oil coated piston pin.
Note :
Confirm the direction of connecting
rod and assemble.
●
With the snap ring plier, insert the snap rings of the piston pin.
●
With confirming the upper side indication of piston ring, after assembling the ring in the piston ring
groove, inspect if the movement of ring is smooth.
●
Arrange the assembled piston in order as the cylinder number.
EA0M4034
Feeler gauge
Standard Limit
0.02 mm 0.2 mm
Standard Limit
0.02 mm 0.2 mm
EA3M2058