REED 00 C50SS, Manual, Page: 71 / 84

REED
00 MODEL:
C50SS
TRAILER CONCRETE PUMP
MAINT
PAGE 41
Do not place hands in the water box or in adjacent
area while motor is running. Always check that the
pressure in the accumulator has been released
before performing any work.
PISTON CUP REMOVAL/REPLACEMENT
•
Cycle machine using appropriate controls until one of the cylinders is at full extension.
Jog swing tube so that it is shifted over to other cylinder. This will expose fully
extended piston.
•
Turn off engine and allow pressure to subside.
•
Remove the four (4) 3/8 – 20 x 1½” long bolts and lockwashers securing the piston
plate, and piston cup to the piston adapter.
•
Pry out the old piston cup and plate. Clean piston plate and inspect piston adapter,
and clean if needed.
•
Apply a good amount of grease on lip of piston cup. Tip should be facing hopper.
Insert two (2) 3/8 – 20 x 4 long bolts through piston plate and cup in opposite holes.
This will allow you to locate the cup in a correct position for lining up the holes.
•
Screw the bolts by hand into the piston adapter. Start the piston cup into the cylinder
and using a wooden dowel, tap the piston plate which will force the piston cup into the
material cylinder.
•
With the cup against the adapter, insert two (2) of the original 3/8 – 20 x 1½” long bolts
and tighten. Remove the two (2 ) long bolts and replace with the originals
Replace piston cup in other cylinder in the same manner.
REVISION: