REED 00 C50SS, Manual, Page: 73 / 84

REED
00 MODEL:
C50SS
TRAILER CONCRETE PUMP
MAINT
PAGE 43
PISTON ADAPTER O-RING REMOVAL/REPLACEMENT
Installed on the piston adapter, is an o-ring that is used as a second seal for the material
cylinders. This o-ring will need replacing and a tell-tell sign is if the material cylinders only
partially fill with material. This o-ring cannot be replaced from the hopper end, but must be
done at the flush box end. To change the piston adapter o-ring, the following is offered:
•
Cycle machine until one of the cylinders is completely retracted. Turn off engine and
allow the pressure to subside.
•
Drain all oil or water from the flush box.
•
As a precaution, mark location of proximity sensor adjusting bracket. Remove proximity
sensor cross bracket.
•
Mark the end of the piston coupler so that on reassembly, it can be placed in the same
relation.
•
Unbolt and remove top half of coupler. Pull the piston assembly toward you.
•
Inspect piston cup, clean up or if necessary replace.
•
Remove old o-ring from adapter and smear some clean grease on the new o-ring.
Install on adapter.
•
Place piston cup assembly into material cylinder at an angle so that center of adapter is
angling toward bottom of flush box.
•
Pull up on adapter to square up piston assembly.
•
Install coupler halves and bolt together.
Follow same procedure to remove and replace the o-ring on the other cylinder. After this
installation proceed to:
•
Replace proximity sensor cross bar and check position of adjustment bracket to
previous mark.
•
Refill flush box with water or oil.
REVISION: