Walinga Grain-Vac 7614F Operator's Manual page 63

6.3 AIRLOCK
PROBLEM
Noisy Airlock
Airlock stalls
Air loss through airlock.
Breaking rotor blades.
CAUSE
Tips hitting case.
Airlock jammed.
Insufficient oil flow.
Airlock operated in reverse
too long.
Blades too tight.
Faulty airlock motor.
Faulty pressure relief valve
Tip clearance too large.
Airlock running in reverse.
7614F Grain-Vac Operator's Manual 34-100853-6
SOLUTION
Readjust tips where applicable.
Reverse airlock direction to clear.
Disconnect hydraulic hoses.
Remove obstruction from airlock by
opening inspection door or discharge
elbow.
Check couplings or lines.
Defective tractor hydraulics.
Repair tractor.
Rotor damaged. Repair or replace
rotor.
Loosen bolts. Refer to airlock
maintenance. (section 5.2)
Replace motor.
Replace pressure relief valve or adjust
if necessary. (if so equipped)
Adjust tips to decrease clearance
to 0.006 inches.
Set for forward rotation. Repair or
replace blades.
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