Repair
Replace Priming Piston
Pump Part No. Repair Kit
24W152 237910
24W153 237910
24W150 237909
24W151 237909
1. Stop the pump o n the downstroke, with the flats
of the priming piston rod (17) exposed below
the intake cylinder (18). It is not necessary to
disconnect the d isplacement pump from the
motor, but you may have to disconnect it from
the heate d platen.
2. Relieve the pressure. See
Pressure Relief Procedure, page 8 .
3. Hold the flats of the priming piston rod (17) with
an adju stable wrench, and use a second wrench
to uns c rew the priming piston seat (21) from the
rod.Slidetheprimingpiston(20)offtherod.
Inspect the inner and outer surfaces of the piston
(20) for scoring, wear, or other damage.
4. 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±4N•m).
Figure 3 Priming Pi ston
1
Torque to 60 ± 3 ft-lb (81 ± 4 N•m).
2
Torq
ue to 390 ± 45 ft-lb (529 ± 61 N•m).
3
Torque to 150 ± 30 ft-lb (203 ± 41 N•m).
334127A
11
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