Doosan 50001, Руководство по ремонту

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SP001693 Engine
Page 154
4. Reinstall the bearing inserts (1, Figure 220) in the
connecting rod and cap.
5. Apply a liberal coat of clean engine oil to the bearing
inserts and crankshaft journal.
6. Apply a light coat of clean engine oil to the rod cap bolts.
Reinstall the connecting rod cap (2, Figure 220). Tighten
the connecting rod bolts to the specified torque in two
stages (1/2 then full torque). See “Special Torque Chart”
on page -101 for specifications.
7. Reinstall the remaining pistons in their respective
cylinders.
Reassembly of Camshaft and Timing Components
Installation of Gear Case or Front Plate
1. If removed, installa new camshaft bushing (3, Figure 221)
using the appropriate service tool.
2. Apply a continuous bead of threeBond Liquid Gasket to
the mounting area of the gear case or front plate. Be sure
to circle each bolt hole.
3. Install two new O-rings (2, Figure 221) in the cylinder
block.
4. Reinstall the gear case (1, Figure 221). Tighten the bolts to
the specified torque.
Installation of Camshaft
NOTE:
The gear housing or front plate must be reinstalled
prior to installing the camshaft. See “Installation of
Gear Case or Front Plate” on page -154
1. If removed, reinstall the camshaft end plate (1, Figure
222), key, and timing gear (4, Figure 222) onto the
camshaft using a press.
NOTE:
Heat the gear to 356 - 392°F (180 -200°C) and
press onto the end of the camshaft.
2. Rotate the cylinder block so that gravity will keep the
tappets (5, Figure 222) in place and out of the way of the
camshaft lobes when the camshaft is being reinstalled.
NOTE:
If the engine is not installed on an engine repair
fixture, stand the engine upright on the flywheel
end mounting flange.
NOTE:
The tappets are "mushroom" shaped and must
be installed from inside the engine crankcase.
3. Lubricate the tappets with clean oil or assembly lube.
Reinstall the tappets in their respective locations in the
cylinder block. Push the tappets fully into the tappet bores
Figure 220
Figure 221
Figure 222