Displacement Pump
NOTE: Packing Repair Kit 235–703 is available.
Reference 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.
7843A
47
213
*227
*214
215
222
15
14
17
18
50
36
43
45
11
Fig. 17
1
2
Apply pipe
sealant (110–110
)
2
1
48
Torque to
50 ft-lb (68 N
m)
824–132 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.
Model 824–132. While pulling upward on suction
hose (47), unscrew hose from inlet tube (43).
Unscrew drain hose (50) from displacement pump
nipple (36).
5.
Model 824–130. Remove suction tube (43). Un-
screw drain tube (84) from displacement 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 308–815 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.
