REED 00 C50SS, Manual, Page: 62 / 84

REED
00 MODEL:
C50SS
TRAILER CONCRETE PUMP
MAINT
PAGE 32
ADJUSTMENT TO SWING TUBE
It is important from an operational standpoint that the swing tube shift properly from side to
side and that it is properly adjusted to prevent leakage particularly at high pressure and high
volume pumping. On a properly adjusted swing tube, the shifting motion from one material
cylinder to the other shall be smooth providing a very light scraping noise. The gap between
the swing tube and the wear plate installed on the hopper shall be almost non-existent, but not
so tight that it impedes a smooth movement.
Located inside the swing tube is a wear ring and it is designed to stay continually in contact
with the wear plate providing the necessary sealing action for efficient operation. This is the
scraping noise that should be heard. If there is a lack of the scraping noise or the swing tube
shifts too freely this is usually the first indication that an adjustment is required,
To adjust the swing tube clearance:
•
Shut off engine. If unit was being run, allow a few minutes for the accumulator pressure
to subside.
•
Remove cotter pin from large castle nut on swing tube shaft.
•
Tighten the castle nut with a 24” adjustable wrench, until no more turning is possible.
•
Start engine and adjust THROTTLE to a low RPM.
•
Actuate the PUMP switch to ON position and see if the swing tube shifts from side to
side, if it does, the wear parts are very worn and should be replaced.
•
If the scraping noise of the swing tube is slight and the tube shifts briskly from side to
side, the adjustment is correct.
•
If further adjustment is necessary, again tighten hex nut a little at a time. DO NOT
OVER TIGHTEN or swing tube may bind while pumping material at high pressure.
•
If the swing tube hesitates or stutters during the change over, the adjustment is too tight.
Loosen lock nut a little at a time
•
Once adjustment is finalized, replace cotter pin and cover.
REVISION: