Replace The Priming Piston - Graco Check-Mate 800 Instructions For Use Manual

Replace the Priming Piston

Pump Part No.
24W152
24W153
24W150
24W151
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.
1
Torque to 60 +/- 3 ft-lbs (81 +/- 4 N•m).
2
Torque to 390 +/- 45 ft-lbs (529 +/- 61 N•m).
3
Torque to 150 +/- 30 ft-lbs (203 +/- 41 N•m)
F . 4: Replace Priming Piston
IG
334127D
Throat Seal Repair Kit
237910
237910
237909
237909
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).
Repair
11