Buhler Farm King Grain Vac Conveyair 6640, Operator And Parts Manual

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26
Maintenance - Grain Vac
Maintenance (continued)
Airlock Tips
Check Airlock Tips clearance when there is a noticeable drop in capacity of the grain vac.
If clearance exceeds 0.015" (0.38mm) adjust as shown below.
A. Checking clearance:
1. Disengage PTO and hydraulic power and shut off engine. Wait for all moving parts to stop.
2. Relieve the pressure on the hydraulic lines and disconnect from tractor.
3. Remove hydraulic lines from the airlock drive motor to allow rotation of the airlock.
4. Open the inspection door on the receiver tank. Use a feeler gauge to check the clearance
between the tips and the shell.
B. Airlock Tip Adjustment
1. Remove the connector on the air line between the BPS and the receiver tank.
2. Attach an overhead hoist to the receiver tank.
3. Remove the eight bolts securing the receiver tank to the airlock mount plate. Remove the
receiver tank from the frame.
4. Position tip next to top of shell.
5. Loosen slightly the 5 bolts attaching the tip to the blade of the airlock.
6. Move the tip until you have 0.006" (0.15 mm) clearance between tip end and clockwise side
of shell.
7. Tighten the bolts and torque to 20-25 ft. lbs. (34-40 Nm).
CAUTION
High pressure fluids can penetrate the skin and cause
infection and toxic reaction.
WARNING
ROTATING AIRLOCK HAZARD
To prevent serious injury or death
from airlock blades:
1. Do not place hands in tank
when airlock is turning.
2. Shut-off engine and wait for moving
parts to stop before opening door to
adjust, service or unplug.