Doosan DX140LCR, Руководство по ремонту

Страница: 747 / 1032

SP001945
Page 11
Main Pump
Reassembling procedures
For reassembling reverse the disassembling procedures, paying
attention to the following items.
1. Do not fail to repair the parts damaged during
disassembling, and repair replacement parts in advance.
2. Clean each part fully with cleaning oil and dry it with
compressed air.
3. Do not fail to apply clean working oil to sliding sections,
bearings, etc. before assembling them.
4. In principle, replace seal parts, such as O-rings, oil seals, etc.
5. For fitting bolts, plug, etc., prepare a torque wrench or so
on, and tighten them with torques shown in Section 2-3.
6. For the double-pump, take care not to mix up parts of the
front pump with those of the rear pump.
7. Fit tilting bush (214) of swash plate (212) to tilting pin
(531), and fit swash plate (212) with shoe plate (211) to
swash plate support (251) correctly.
8. To pump casing (271, 272), fit drive shaft (111, 113) set
with bearing (123), bearing spacer (127) and stop ring
(824).
Figure 13
CAUTION
In case the servo piston, tilting pin stopper (L), stopper
(S), and Qmin.plug have been removed, attached them
to the pump casing in advance.
In the tightening work of the servo piston and the
tilting pin, use the tool not to damaged the head if the
tilting pin and the feed back pin. Besides, apply Loctite
(of medium strength) to the thread portion.
Confirm with fingers of both hands that swash plate
can be removed smoothly.
Apply grease to sliding sections of swash plate (212)
and swash plate support (251), and drive shaft (111,
113) can be fitted easily.
Take care not to damage shoe plate (211) surface.
Figure 14