Repair
334127D
11
Replace the Priming Piston
1. Stop the pump on the down stroke with the flats of
the priming piston rod (17) exposed below the
intake cylinder (18). It is not necessary to discon-
nect the displacement pump from the motor, but you
may have to disconnect it from the heated platen.
2. Relieve the pressure. See
Pressure Relief Proce-
dure
on page
8
.
3. Hold the flats of the priming piston rod (17) with an
adjustable wrench and use a second wrench to
unscrew the priming piston seat (21) from the rod.
4. Slide the priming piston (20) off the rod. Inspect the
inner and outer surfaces of the piston (20) for scor-
ing, wear, or other damage.
5. Slide the priming piston (20) onto the rod (17) until it
stops. Hold the rod (17) steady with a wrench on the
flats and screw the seat (21) onto the rod with
another wrench. Torque to 60 +/- 3 ft-lb (81 +/- 4
N•m).
Pump Part No.
Throat Seal Repair Kit
24W152
237910
24W153
237910
24W150
237909
24W151
237909
F
IG
. 4: Replace Priming Piston
WLD
Torque to 60 +/- 3 ft-lbs (81 +/- 4 N•m).
Torque to 390 +/- 45 ft-lbs (529 +/- 61 N•m).
Torque to 150 +/- 30 ft-lbs (203 +/- 41 N•m)
1
2
3
