Multitool MT8CW-8 User manual

1
SAFETY INSTRUCTIONS
1. ALWAYS WEAR EYE PROTECTION. A full-face visor is preferred. Any Belt/Disc Grinder can throw foreign objects into the eyes.
2. AVOID CONTACT WITH BELT OR DISC. The abrasive belt when running is an aggressive cung tool. Extra care should be
exercised when using coarse grit belts because of their rapid cung acon.
3. KEEP CHILDREN AWAY. All visitors should be kept a safe distance from the work area.
4. BOLT THE BENCH GRINDER securely to the bench or supporng surface to stop it from pping over or moving when in use.
5. DO NOT MOUNT the aachment protruding into walkways.
6. KEEP WORK AREA CLEAN. Cluered areas and benches invite accidents.
7. ALWAYS WEAR A DUST MASK to prevent dust inhalaon when adequate venlaon or extracon is not available.
8. DO NOT WEAR LOOSE CLOTHING which may become entangled in the machine. Wear protecve hair covering to contain long
hair.
9. ALWAYS HOLD the work piece rmly when grinding and apply a light and steady pressure against abrasive disc or belt.
10. ALWAYS GRIND ON THE DOWNWARD SIDE of the grinding disc. Grinding on the upward side of the disc could cause the
work piece to y out of posion, resulng in injury.
11. DO NOT USE BELTS THAT ARE DAMAGED, TORN, OR SHOW SIGNS OF WEAR.
12. ALWAYS INSTALL BELTS with arrows in the back of the belts poinng the correct direcon. Belts with lap joints must be ed
facing the correct direcon.
USER IS RESPONSIBLE TO HAVE WORKING KNOWLEDGE OF BELT GRINDER USAGE.
MULTITOOL GRINDERS IS NOT RESPONSIBLE FOR ANY DAMAGES OR INJURIES INCURRED
WHILE USING THE MULTITOOL PRODUCT LINE.
!
The words “us”, “we” or “our” refers to Multool Grinders or
their authorized agent.
A.) The warranty will only apply if the ng and operang
instrucons are followed.
B.) The warranty will only apply for a period of 1 year
from the date of original purchase against any defect in
our product, which can be proved, to our sasfacon to
have been caused by faulty materials or workmanship. Our
liability is limited to the cost of repairing or at our opon,
replacement of the defecve goods or parts of the goods. We
will not be liable for any defect caused by unauthorized repair.
1. If warranty claim is made, we must be noed as soon as
possible aer assumed defect has become apparent.
2. Goods may only be returned with the approval and RGA # from
Multool Grinders. Contact Multool Grinders at 641-628-4253 or
email us at sales@multoolgrinders.com to obtain RGA# and
return approval.
3. The customer must prepay all freight charges for returned goods.
4. We will contact the customer with a suggeson aer inspecng
the goods to determine with the customer what acon should be
taken in the circumstances.
INSTRUCTIONS TO FOLLOW FOR WARRANTY CLAIMS:
WARRANTY AND CONDITIONS OF SALE
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
Installaon Instrucons for Belt Grinder Model MT8CW-8
Hardware Kit
(Refer to this image for numbered
hardware throughout the instrucons)
Tensioner Arm Belt and Disk
CONTENTS
WARNING: To avoid mistakes that could cause injury, do not use the Multool unl you have
read and understood the following:

2
·1/2” Wrench · #2 Phillips
Screw Driver
·Socket Wrench
·15/16” Socket
REQUIRED TOOLS
OPERATING INSTRUCTIONS
BELT CHANGING
To remove the belt, simply push down on the underside of belt to compress the tensioner assembly. The catch will automacally
hold the slide in the retracted posion. When replacing the belt simply release the catch. Make sure that direconal belts are
turning the correct direcon.
PLATEN GRINDING (HORIZONTAL OR VERTICAL)
It is important that the platen is not set too high. If belt is deected and rides up over the platen this creates an undue strain on
the grinder, especially when starng. If platen is not oen used, it is beer to adjust it slightly below the belt. A simple method to
adjust the platen is to place a straight edge on top of the belt between the contact wheel and drive pulley and raise platen so that
it just touches the under side of belt.
DISC GRINDING
Disc grinding is well suited for shaping and general deburring work. Grind parts on the downward side of the disc’s rotaon, so
that dust and sparks are directed away from the operator’s face. For grinding small parts, a secure work holding tool should be
used to help prevent operator from contact with the grinding disc surface. Abrasive disc grit should be matched to the amount of
material intended to be removed. The more quickly material can be removed, the less heat will build up in the part being ground.
This will also help preserve abrasive life. 80 – 180 grit discs are good for general deburring and chamfering operaons. For heavy
material removal use more aggressive 40 grit abrasive discs.
CONTACT WHEEL GRINDING, POLISHING, AND SANDING
Always grind on the lower half of the contact wheel, so that dust and sparks are directed away from the operator’s face. For
grinding small parts, a secure work holding tool should be used to help prevent operator contact with the grinding belt surface.
Abrasive belt grit should be matched to the amount of material intended to be removed. The more quickly material can be
removed, the less heat will build up in the part being ground. This will also help preserve abrasive life. 80 – 180 grit belts are
good for general deburring and chamfering operaons. For heavy material removal use aggressive (24 – 40 grit) abrasive belts
unl desired shape is achieved. Finer grit belts should be ulized for removal of coarser grinding marks and polishing operaons.
Scotchbrite® belts are ideally suited for paint and rust removal operaons.
SLACK BELT
Slack Belt grinding is a method of belt grinding, sanding, or polishing where no backing is used behind the belt. It is especially
suitable for round and contoured work and some sharpening operaons. Slack belt grinding can be performed on the underneath
side of the belt opposite the platen. Belt grits of 180 to 400 are recommended due to the rapid cung acon of this method of
grinding.
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
2. Fit the drive drum and washer
arrangement by sliding over the
sha of the grinder and ghten.
If drive drum does not run true,
use rubber or leather mallet to
tap on the inside edge of rim
(image 2C) where run-out may
occur.
2A2A
FITTING INSTRUCTIONS
1. Remove the drive drum from the
grinder by removing the 15/16
inch nut, washer, and drive drum,
nong the washer arrangement on
either side of the drive drum. Fit
the tensioner arm using 8mm bolts
(2) and washers (7) into the slots on
the main bracket, keeping the bolts
slightly loose for future adjustments
in step 4.
1A1A 1B1B
2B2B 2C2C

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For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com
3. Remove the platen to adjust
the tensioner arm plate.
3A3A 3B3B
4. The tensioner arm plate should
now be set 1/4” (6mm) from
the inside edge of the drive
drum (image 4A). Set tracking
lever in mid or horizontal
posion as shown in image 4B.
Use a 1/2” wrench to ghten
the two bolts securing the
tensioner arm to the main
bracket (image 4C).
4A4A 4B4B 4C4C
5. Fit the belt and release spring
loaded contact wheel by liing
catch.
55
Spin the belt over a few revoluons by
hand. If the belt wanders towards the
drive drum, remove belt, loosen the top
bolt of the tensioner arm (image 4C)
and tap the edge of the platen in small
amount on the le (image 6A). If the
belt moves towards the grinder, tap the
edge of the platen on the right (image
6B). Reinstall belt and repeat test.
6. 6A6A 6B6B
When the belt runs evenly on the
contact wheel, re-ghten bolt (image
7A). Briey turn grinder on to check.
Final tracking adjust ments can be done
with the tracking lever (image 7B).
Pulling the tracking lever down moves
belt to the le, while moving it up
moves the belt to the right. Reinstall the
platen to the tensioner arm (image 7C).
7. 7A7A 7B7B
For a short instrucon video, see
hps://multoolgrinders.com/pages/support/videos.html
Install the cover plate using
screws (4). Clean face of
cover disc with a solvent
and install adhesive backed
abrasive disc provided.
88
8.
7C7C

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Vibraon or wobble from the drive drum
Vibraon is oen related to the hardware, installaon, or the grinder itself. It is best to remove the stone or wheel on the
opposite side of the grinder to be sure that is not the source of the problem. Runout at the edge of the drum of approximately
1/16” is within the standard tolerances for this machine. This small amount of runout has virtually no impact on how the
aachment operates.
The most common issue we have found is that ghtening the arbor nut can somemes cause the drum to wobble. You may
noce that as the nut is ghtened, runout increases. It may be necessary to use a so face mallet or hammer and block
of wood to take out the bind created by ghtening and true the drum on the sha. Rotate the drum unl the high spot is
idened and strike the drum on the inside edge near the screw bosses for the cover disc. A substanal strike with a dead
blow mallet is required to adjust runout. Light tapping will generally not have an eect.
For more informaon on how to perform the drive drum troubleshoong x, scan the QR Code
on the le or visit our website: hps://multoolgrinders.com/pages/support/videos.html
MULTITOOL TROUBLESHOOTING
Wall Mount
The wall mount bracket frees up valuable
oor space and can swivel under the
grinder via a quick release handle.
Features a powdercoat nish and heavy
steel construcon. Makes shop
clean-up easy!
Miter Table
This is the most popular accessory
available. The table will lt 5 degrees
up and 50 degrees down. The included
miter gauge is excellent for squaring or
adjusng an angle.
Abrasive Starter Pack
This convenient pack includes 1 each of:
40, 80, 120, 180 grit premium aluminum
zirconia belts, 220 Trizact belt, and a red
Scotch Brite belt.
Grit Type Abrasive Part Number
24 Premium Aluminum zirconia BLT48224-P
40 Premium Aluminum zirconia BLT48240-P
40 Standard Aluminum oxide BLT48240-S
80 Premium Aluminum zirconia BLT48280-P
80 Standard Aluminum oxide BLT48280-S
120 Premium Aluminum zirconia BLT482120-P
120 Standard Aluminum oxide BLT482120-S
180 Premium Aluminum zirconia BLT482180-P
180 Standard Aluminum oxide BLT482180-S
220 (A80) Premium Trizact BLT482TZ220
240 Standard Aluminum oxide BLT482240-S
320 Standard Aluminum oxide BLT482320-S
400 (A45) Premium Trizact BLT482TZ400
700 (A30) Premium Trizact BLT482TZ700
1200 (A16) Premium Trizact BLT482TZ1200
Medium Premium Scotch-Brite BLT482SBM
Fine Premium Scotch-Brite BLT482SBVF
Polishing Standard -BLT482SBP
Belts for Model 8CW
BELTS AND ACCESSORIES
Polishing Starter Pack
Polish material to a mirror nish with
this Polishing Starter Kit. This kit includes
1 each of: 400, 700, and 1200 grit 3M
Trizact belts, a polishing belt, and a 4 bar
rouge set.
Table Mount
Keep your work surface clear with this
Vise and Grinder Table Mount. Aach
above or below any work surface while
the receiver hitch style system allows you
to change out dierent tools quickly. it
can also be indexed 90 degrees for use
with the Multool Workrest.
For parts, tech support, belts, or discs contact Multool Grinders at 641-628-4253 or sales@multoolgrinders.com