Walinga Grain-Vac 7614F Operator's Manual page 57

5.2.3 AIRLOCK
4. Wiper Blade
A wiper blade is located at the top of the
airlock to clean the tips as the airlock turns.
To check the wiper blade, follow this
procedure:
a. Open the access door on the receiver tank.
b. Reach into the top of the airlock and feel
the condition of the wiper blade.
- Adjust if necessary
c. Replace the blade if it is damaged in any
way.
5. Blade Replacement:
a. Shut the PTO off and disconnect the
hydraulic hoses from the tractor.
b. Remove the quick connect plugs from
the hydraulic lines.
c. Lift the receiver tank off the airlock.
d. Remove the tips from the rotor and the
wiper blade from the housing.
e. Mount the blades to their respective vane
and tighten the bolts finger tight.
f. Rotate airlock rotor slightly to set the
clearance between the blade and the
case.
Be sure to set the blades at the minimum
applicable clearance. Use a feeler gauge.
g. Tighten the centre bolt first. Then the
others.
7614F Grain-Vac Operator's Manual 34-100853-6
h. Rotate the airlock and listen if the blades
touch the housing anywhere. A slight
touch is alright.
Hint: Number blades when done.
i. Repeat mounting procedure with the
other blades.
j. Turn the rotor all the way around after
each blade is installed to be sure no
blades contact the case.
k. Mount the new wiper blade. Be sure the
wiper contacts each tip slightly as the
airlock turns. (1/16
l. Install and secure the tank.
m. Connect the hydraulic lines and close
the access door.
n. Run the airlock at operating speed.
o. Clean thoroughly.
Fig. 5-28 Check Wiper Blade Through The
Access Door
th
inch)
54