Hitachi ULTRA MAX 695 232133 - Manual (Page 22)

22 308801
Displacement Pump
NOTE: Packing Repair Kit 235703 is available. Refer-
ence numbers of parts included in the kit are marked
with an asterisk, i.e., (223*).
Removing pump (See Fig.17)
WARNING
INJECTION HAZARD
To reduce the risk of serious injury, when
instructed to relieve pressure, follow
Pressure Relief Procedure on page 8.
47
7736A
213
*227
*214
215
222
15
14
17
18
50
36
43
45
11
Fig. 17
1
2 Apply pipe
sealant (110110
)
2
1
48
Torque to
50 ft-lb (68 N
m)
232132, 232133 shown
12
1. Relieve pressure.
2. Flush pump, if possible. Relieve pressure. Stop
pump with piston rod (222) in its lowest position, if
possible. To lower piston rod manually, rotate
motor fan blades.
3. Remove filter (48).
4. Models 232132 and 232133. While pulling upward
on suction hose (47), unscrew hose from inlet tube
(43). Unscrew drain hose (50) from displacement
pump nipple (36).
5. Models 232130 and 232131. Remove suction
tube (43). Unscrew drain tube (84) from displace-
ment pump nipple (36).
6. Use a screwdriver to push retaining spring (15) up
and push out pin (14).
7. Loosen screws (17). Remove pump (18).
Repairing pump
See manual 308815 for displacement pump repair
instructions and parts.
Installing pump (See Fig. 17 and 18)
14
201
15
Fig. 18
202
7840A
1. Lightly grease or oil transducer (67). See Fig. 24.
Guide pump over alignment pins and pressure
transducer. Tap it into position with a soft hammer.
Tighten screws (17) to 50 ft-lb (68 N
m).
2. Align hole in rod (222) with connecting rod assem-
bly (12). Use screwdriver to push retaining spring
(15) up and push in pin (14). Push retaining spring
into place around connecting rod.
WARNING
MOVING PARTS HAZARD
Be sure retaining spring (18) is firmly in
groove all around, to prevent pin (14)
from working loose. See Fig. 18.
If pin works loose, parts (including pump connect-
ing rod or bearing housing) could project into the air
and cause serious injury or property damage.
3. Replace o-ring (45) if worn or damaged. See page
29. Reconnect suction and drain hoses (47, 50).
Install front cover (11).
4. Tighten packing nut (202) enough to stop leakage,
but no tighter. Fill packing nut full with Graco TSL.
Push plug (201) into packing nut.