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Doosan DX22 - Page 75

Doosan DX22
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5. General Engine Information
69
9. Oil seal holder (front)
EDX22190093
1) After aligning the oil seal properly with the oil seal holder
holes, use an insertion jig to install it.
(Be careful not to damage the oil seal.)
2) Apply a gasket to the oil seal holder.
3) Align the cylinder block reference pins with the oil seal
holder reference pin holes; then, tap the reference pins
gently with a urethane hammer to assemble them. Make
sure that the oil seal is not damaged by the crankshaft
during assembly.
EDX22190118
4) Apply oil to the inside of the oil seal and tighten the oil
seal holder in a zigzag pattern.
10. Pistons
EDX22190120
1) Align the piston assemblies in order of their respective
cylinders and insert the bearings into the connecting rods
and bearing caps. Take care not to mix connecting rods
and caps with those used in other cylinders.
2) Apply a sufficient layer of clean engine oil to the pistons
and connecting rod bearings.
EDX22190119
3) Insert the piston rings with a special tool and adjust the
gap between the piston rings to 120°.
CAUTION
When inserting the oil seal into the oil seal holder,
assemble it in a dry state without applying any oil or
lubricant.
Torque 2.2 kgf·m (15.9126 lbf·ft)
11
55444
22
33 66
Top ring
Second ring
Oil ring
120°
120°

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