Greetings [deeptime] Ed the issues you have described so far sounds as if your motor is out
of alignment & your belt is too slack / tight thus the motor spins, but your barrel does not turn.
In order to fix this you will need just a spanner for two nuts that hold the motor in place,
additionally a allen-key to remove the motor pulley & a cocktail stick to test whether the motor
has oil ports or not.
I noticed a few times that my QT 12/66's belt was slipping on the motor even before i touched
the motor, but now it works as it should without that awful din as my main problem was a duff
motor, that's two out of two Lortone's both with duff motors.
What i would do is competely remove the motor form the base so you can give it a clean & oil
it if the motor has oil ports.
Disassembly:
01: First unplug the tumbler from the mains.
02: Remove the barrel.
03: Loosen the belt cover nut & remove it.
04: Carefully bend the bit of tin on the inside of tumbler to 90° degrees (horizontal) position,
then pull the belt cover off completely.
Note: Clearly the person that thought up this design had never heard of metal fatigue!
05: Remove the belt.
06: Unscrew the set-screw on the motor pulley & then remove the pulley completely.
07: Loosen both nuts just one turn.
08: Remove one of the nut's completely.
09: Use your hand to support the motor & unscrew the other nut completely.
10: gently twist the motor left, right, up & down then pull back on the motor pointng the bolt
threads to 180° degrees (verticle) position, it should seperate from the base.
Note: The motor should have spacers on the inside of the bolt-threads.
On my QT12/66 it is a pair of white plastic spacers on each bolt-thread.
11: Clean the base and motor.
Determining if you have an oil-port or not.
12: Gently lower the cocktail stick into the oil-port cut-out, if you feel resistance just inside
you have an oil-port, if you can lower the cocktail stick to the centre shaft without any
resistance, you do not have an oil-port.
13: If you have an oil-port, put a drop or two of regular car engine oil in each port, there may
be two or more oil-ports.
Reassembly:
14: Ensure that the spacers are on both bolt-threads.
15: Pointing the bolt threads to 180° degrees (verticle) position slide the motor back into the base.
16 Put both nuts back on the bolt-threads & tighten them to hand tight only.
17: Slide the motor pulley back on the motor shaft & align it with the drive pulley.
18: Put the belt back on, motor 1st, then onto the drive pulley, turn the drive shaft to get the belt back on.
19: Loosen both nuts holding the motor a few turns.
Adjusting the belt tension for Right handed persons:
20: Hold the motor in your left hand & turn the motor to the right; towards drive pulley as far
as it will go & tighten the nut fully with a spanner.
Note: the bottom bolt may lurch to the right too, but that is ok.
21: Using your right hand to test the belt tension, by using your index finger & thumb around
the belt guard bolt, lightly press the belt togther, the ideal setting is about 6-7mm (0.25 of an inch)
before the belt pushes back.
22: Hold the motor in your left hand & turn the motor to the left a bit & go back to #21:,
when you get the ideal setting, tighten the nut fully with a spanner.
Adjusting the belt tension for Left handed persons:
Note: it is avisable to remove the barrel guide if not using a free spinning roller on a bolt.
20: Hold the motor in your right hand & turn the motor to the left; towards drive pulley as far
as it will go & tighten the nut fully with a spanner.
Note: the bottom bolt may lurch to the left too, but that is ok.
21: Using your left hand to test the belt tension, by using your index finger & thumb around
the belt guard bolt, lightly press the belt togther, the ideal setting is about 6-7mm (0.25 of an inch)
before the belt pushes back.
22: Hold the motor in your right hand & turn the motor to the right a bit & go back to #21:,
when you get the ideal setting, tighten the nut fully with a spanner.
23: Test the tumbler 1st without a barrel, then with a barrel hopefully if you got the
belt tension right it should spin freely in any position.
24: Slide the belt cover bit tin through the slot , carefully bend the bit of tin on the inside of tumbler
to 0° / 180° degrees (verticle) position.
Note: That's when mine suffered catastrophic metal fatigue failure.
25: If you are lucky, replace and tighten the belt cover nut!
All done!
See my
Lortone QT12/66 Does it sound ok? thread for further info.
--
I hail from (The Barony of Seabegs)
Bonnybridge,
Stirlingshire,
U.K, where
aliens (15mb) sometimes come
for a visit & about 4 miles west from this
monstrosity!
Sticky's: their contents are resource information 1#:
Vendors worldwide (2mb), 2#:
How to use the forum,
3#:
How to identify rocks & minerals, 4#:
Save money on expensive grits & polishes!