Shopsmith MARK V Replacement Manual

Recommendation
We recommend that you have your motor re-
placed by a Shopsmith Authorized Service Dealer
or our Customer Repair division. Since you have
chosen to do this procedure yourself, please read
these instructions thoroughly, paying particular
attention to the safety section and to all WARN-
INGS, CAUTIONS, and NOTES. Following are
instructions on replacing the motor:
Safety
WARNING
• READ and UNDERSTAND all instructions before
beginning the process of removing and replacing the
motor.
• FOLLOW all instructions listed below to remove
and replace your MKV motor.
• ALWAYS, wear Safety Equipment including safety
glasses.

Tools Needed

Straight slot or #2 Phillips Screwdriver
!
Retaining ring pliers
!
! Bandsaw or Coping saw
! Drill press with 3/4" bit
5/32" Allen wrench
!
3/4" x 2-1/2" x 14" Hardwood Board
!
Making Spring Compression Board
WARNING
The motor sheave spring is assembled under heavy
compressive load and if not removed properly could
result in personal injury.
1. Drill a 3/4" hole 5-1/2" from one end in the
center of the board. Cut a radius on the end
of the board closest to the hole.
2. Turn on MKV and set speed control dial to
the fast setting. Then turn off and unplug
the machine.

Removing the Motor

MARK V SHOPSMITH
MOTOR REPLACEMENT
3. Remove the single motor pan retaining
screw directly under the quill.
4. Move the carriage and headstock to the
pivot arm (right) end of the way tubes and
lock in place.
5. Raise your MKV to the drill press position.
6. Lock the pivot arm in this vertical position.
7. Remove the two screws in the sides of the
belt cover. Raise the cover and tape or wire
it to the way tube tie bar.
8. Spread the sheaves on the motor shaft with
hands and remove the drive belt.
9. Place your retaining ring pliers close by for
next operation.
10. Facing the bottom of headstock - place the
compression board on the washer at the
end of the spring with the radiused end of
the board to your left. With both hands
fully compress the spring then rotate the
board clockwise until it catches under the
headstock casting at the way tube.
WARNING
The spring position is held by the wedge action
of the board. DO NOT let the board shift.
a. Hold this spring position, being sure
that the board does not move from the
wedged position against headstock.
11. Remove the retaining ring, then using both
hands, rotate the compression board coun-
terclockwise releasing the spring slowly.
WARNING
This spring is held by the compression board
under load. Be certain that you slowly back the
spring load off using the compression board.
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