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Doosan G424FE - Page 95

Doosan G424FE
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G424F(FE) Service Manual Chapter 3. Engine Mechanical System 93
5. Tighten the main bearing attaching bolts, with a
Torx E12 wrench, extension and torque wrench.
Tighten
Bolts: 50 N·m + 45° + 15°.
Measure
Crankshaft end clearance, as follows:
Install a dial gauge so that the probe touches
the crankshaft end.
With the aid of a screwdriver, displace the
crankshaft to and fro and read the dial gauge
The specified clearance is .....0.070 – 0.302 mm
(0.003 – 0.012 in.).
6. A new seal in the crankshaft, with tool KM-658.
7. Piston-connecting rod assembly with the aid of
the universal band, positioning the piston arrow
turned toward the engine front end.
Important
Lubricate the rings and cylinders.
Simultaneously, guide the connecting rod
bearing with tool T-9806681.
Install the connecting rod upper shell, lubricated
only in the face turned to the journal, and pull
the connecting rod until it touches the journal.
8. Connecting rod cap, with the lower shell
lubricated only in the face turned to the journal.

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