Hitachi 288466 - Manual (Page 4)

Repair
4 311845C
Repair
See your sprayer instruction manual for complete
instructions for removing and installing the pump in your
sprayer.
Disassembly
1. (Fig. 1) Remove packing nut (3).
F IG . 1
2. (Fig. 2) Unscrew intake valve from cylinder.
F IG . 2
3. (Fig. 3) Disassemble intake valve. Clean and
inspect o-ring (17). You may need to use a pick to
remove o-ring.
F IG . 3
4. (Fig. 4) Use a hammer to tap piston rod (5) out of
cylinder (2), or flip pump over and tap piston rod out
against work bench.
F IG . 4
5. (Fig. 5) Remove piston rod (5) from sleeve (4).
F IG . 5
3
ti8845a
ti8846a
Spring (26) for model 288819 is optional and is not
included with the pump.
ti8847b
26
(288467/288468)
17
18
19
16
1
(288819)
26
ti8848a
5
2
ti8849a
4
5