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FOREWORD
Delta Model 31-731 is a abrasive finishing machine. The Delta Model 31-731 includes two tilting tables, 4½" arbor pulley,
V-belt, 80-grit aluminum oxide belt and 50-grit aluminum oxide disc.
FUNCTIONAL DESCRIPTION
UNPACKING AND CLEANING
YOUR MACHINE IS SHIPPED WITHOUT BELT TENSION APPLIED TO THE SANDING BELT. BEFORE
OPERATING THE MACHINE IT IS VERY IMPORTANT THAT THE SANDING BELT IS PROPERLY ADJUSTED FOR
CORRECT BELT TENSION AND IS TRACKING PROPERLY AS EXPLAINED IN THE SECTION "ADJUSTING
TENSION AND TRACKING OF THE SANDING BELT."
Carefully unpack the machine and all loose items from the shipping container. Remove the protective coating from all
unpainted surfaces. This coating may be removed with a soft cloth moistened with kerosene (do not use acetone, gasoline or
lacquer thinner for this purpose). After cleaning, cover the unpainted surfaces with a good quality household floor paste wax.
ASSEMBLY
FOR YOUR OWN SAFETY, DO NOT CONNECT THE MACHINE TO THE POWER SOURCE UNTIL
T H E M A C H I N E I S C O M P L E T E LY A S S E M B L E D A N D Y O U R E A D A N D U N D E R S TA N D T H E E N T I R E
INSTRUCTION MANUAL.
STAND AND ELECTRICALS
If you purchased your machine complete with stand and
electricals, factory mounted and wired, the stand is ship-
ped as shown in Fig. 2. The switch (A) Fig. 2 and motor
(B) Fig. 3 are completely assembled to the stand and the
necessary wiring from the motor to the switch has been
completed.
Fig. 2
Fig. 3
Fig. 4
Fig. 5
ASSEMBLING
MACHINE TO STAND
Place the machine on the stand with the arbor pulley
over the opening (A) Fig. 4, on the top of the stand. The
drive belt is shipped on the arbor pulley of the machine
and must be inserted down through the opening (A). The
disc end of the machine is to be positioned on the same
end of the stand that the switch (B) Fig. 4, is located. Line
up the four holes on the base of the machine with the
four holes (C) in the top of the stand. Place a 3/8" flat
washer on a 3/8"-16x3" hex head screw (D) Fig. 5, (two
are shown), insert screw through the hole in the base of
the machine and the hole in the top of the stand. Thread
a 3/8"-16 hex nut onto the screw and tighten securely.
Repeat this process for the three remaining holes.
A
B
C
C
A
B
D
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