Section 3: Maintenance; Mix Pump Hose Replacement - Stoelting U421 series Operator's Manual

Section 3: Maintenance

A. Mix Pump Hose Replacement
Replace pump hose every 800 gallons or
every 2 weeks, whichever occurs fi rst.
Replace the hose during the cleaning
process.
A.1
Remove the three drawers from the cab. To remove a
drawer, pull it out. Tilt the drawer up to disengage the
front rollers. Pull it further out then up to disengage
the rear rollers.
A.2
Turn the pump on and pull down
on the pickup end of the tan
hose until a few inches of tubing
is visible. The pickup end is on
the left side.
Then turn the pump off .
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NOTE
U421-I2A & U431-I2A OPERATOR'S MANUAL
A.3
Loosen the clamps on the tan
hose at the mix sensor and check
valve block.
Disconnect the hose at both
ends.
A.4
Turn the pump on and pull the hose out of the black
cover.
Then turn the pump off .
A.5
Rotate the pump rollers so one of the
rollers is at the 6:00 position.
With a brush, clean the roller
assembly with detergent water, then
with clear water.
513713 REV.0