Repair

14.(Fig. 16) Reassembly intake valve with new o-ring (17), seat (16) and ball (19). Seat may be flipped over and used on the other side. Clean seat thor- oughly.

Spring (26) for model 288819 is optional and is not included with the pump.

 

26

18

(288467/ 288468)

 

26

19(288819)

16

17

ti8847b

FIG. 16

15.(Fig. 17) Install intake valve on cylinder. Torque to: 200 +/- 5 ft-lb (271 +/- 7 N•m) 288467/288468, 288819.

110+/- 5 ft-lb (149 +/- 7 N•m) 288466.

FIG. 17

16.Torque packing nut to:

140 +/- 10 in-lb (15 +/- 1 N•m) 288467/288468, 288819. 125 +/- 10 in-lb (14 +/- 1 N•m) 288466

When pump packings begin to leak, tighten packing nut down until leakage stops or lessens. This allows approximately 100 gallons of additional operation before repacking is required.

8

311845C

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Hitachi 288466 important safety instructions 19288819