Mittler Bros Machine & Tool 400-202 User Manual

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Fax: [phone]

Division of Mittler Corp.

P.O. Box 110 Foristell, Missouri 63348

10 Cooperative Way Wright City, MO 63390

400 Single Speed to Variable Speed Conversion

#400-202

1. Unpack the boxes and be sure all the parts are included. See the list at the end of these
instructions.

2. Unplug the machine from any power source. Remove the switch box from the base plate by
removing the cover and unscrewing from the base plate.

3. Remove the Love Joy Cover by removing the two screws. Then loosen the set screws on each
half of the Love Joy coupling.

4. With someone holding up the end of the motor remove the four (4) bolts holding the motor /
gearbox assembly to the mounting plate. Remove the complete motor, gearbox, cord & switch
assembly from the machine. Save the mounting bolts to remount the motor / gearbox.

5. Remove the Love Joy coupling half from the spindle shaft if it did not slide off in step 4.

Remove
Cover

Unscrew
from Base
Plate

Love Joy
Cover

Remove
Screw

Remove
Screw

Set Screw

Set Screw

Mounting
Bolts. 2
on Each
Side

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6. Drill and tap two (2) holes, 5/16”-18, in the motor mounting plate as shown below. The holes
should be drilled 1” deep and then counter sunk a small amount to allow for the bolt heads.

Motor Side

Spindle
Side

Drill & Tap 1” deep
for 5/16”-18

7. Slide the large bore (1”) Love Joy coupler half onto the spindle. Be sure the “fingers” are pointing

toward the motor location and that the key is installed in the key way. Do not tighten down set
screw at this time.

Spider

Gearbox Side
Small Bore

Spindle Side
Large Bore

Fingers

Small
3/4” Bore

Large
1” Bore

8. Assemble the motor to the gear box. Use supplied anti-seize from the gear box container and

lube the inside of the gearbox shaft where the motor slips in. Be sure the motor to gearbox
mounting flange on the gearbox has no bolts in it. Be sure the supplied key is in the motor shaft
and slide the motor and gearbox together. Make sure the motor is rotated so that the wire
connection box is on the side as shown. Install the four (4) bolts and lock washers by hand and
then tighten once you are sure that everything is lined up.

Gear
Box

Lube
Inside

Wire
Connection
Box

9. Slide the small bore (3/4”) Love Joy coupler half onto the gearbox shaft. Be sure the “fingers” are

pointing away from the gearbox and that the key is installed in the key way. Do not tighten down
set screw at this time. Slip the “spider” into the fingers of the coupler.