Hitachi 312350E Service, Replacing Throat Seals, Relieve pressure, page

Service

Service

Use of a hydraulic power supply with fluid tempera- tures above 154°F (68°C) can create hot surfaces which can burn if touched.

•Do not touch pump, motor, or if hydraulic system fluid is above 154°F (68°C).

•Allow sufficient time for pump and motor to cool before attempting any service or repair.

35

11 3

32

Replacing Throat Seals

See FIG. 5.

Replace throat seals if fluid leaks excessively through the weep tube (B), page 4. This procedure can be done without disassembling entire reciprocator.

1.Relieve pressure, page 7.

2.Disconnect reciprocator from pump.

3.Remove four capscrews (15) from bottom of adapter (43). Tap adapter to loosen it and pull it off the bot- tom cap (32).

4.Remove seal (44, included in Reciprocator Repair Kit 247455) from top of adapter (43).

5.Install seal (16) in adapter (43) in the order shown in FIG. 5.

6.Reassemble. Torque the capscrews (15) to 28-32 ft-lb (38 to 43 N.m). Install displacement pump, see Step 23 on page 15.

44 1

19

10

8

27

15 4

ti10463a

1Lips face down.

3	Torque to 54-56 ft-lbs (73-76 N.m).
4	Torque to 170 - 180 in-lbs (19-20 N.m)

FIG. 5

10 312350E