Craftsman 31511721 User Manual 3 INCH BELT SANDER Manuals And Guides L0807584

CRAFTSMAN Sander Manual L0807584 CRAFTSMAN Sander Owner's Manual, CRAFTSMAN Sander installation guides

User Manual: Craftsman 31511721 31511721 CRAFTSMAN CRAFTSMAN 3 INCH BELT SANDER - Manuals and Guides View the owners manual for your CRAFTSMAN CRAFTSMAN 3 INCH BELT SANDER #31511721. Home:Tool Parts:Craftsman Parts:Craftsman CRAFTSMAN 3 INCH BELT SANDER Manual

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OWNERS

_NUAL

MODEL NO.

315,11721

CAUTION:

Read Rules for

Safe Operation

and Instructions

Carefully

SAVE THIS

MANUAL FOR

FUTURE REFERENCE

!i i!< ¸i ! iii

CRRFTS!dRN°

DOUBLE INSULATED

lntrodur.tion

Operation

Maintenance

Repair Parts

Designed exclusively for and sold onty by

SEARSi ROEBUCK AND CO., Dept, 6gsi731A, Sears 'Tower, Chigago, IL 60684

FULL ONE YEAR WARRANTY ON CRAFTSMAN BELT SANDER

If this Craftsman Belt Sander fails to give complete satisfaction within one year'from th_e of purchase

RETURN IT TO THE NEAREST SEARS STORE THROUGHOUT THE UNITED STATES and Sears will repair

it, free of charge,

If this belt sander is used for commercial or rental purposes this warranty applies for only 90 days from

the date of purchase,

This warranty gives you specific legal rights, and you may also have other rights which vary from state to

state.

SEARS, ROEBUCK AND CO,

DEPT. 698/731A

SEARS TOWER

CHICAGO, IL 60684

INTRODUCTION

Your Craftsman 3-Inch Belt Sander is suitable for

coarse, medium and fine sanding of wood, metals,

plastics and other materials.-It is ideal when used for

smoothing rough boards, chamfering, rounding

edges and many other general sanding applications.

It is ideal for refinishing large pieces of furniture,

stairs and other large surfaces, its balanced design

makes it easy to use.

DOUBLE INSULATION

Double insulation [s a concept in safety, in electric

power tools, which eliminates the need for the usual

three wire grounded power cord and grounded supp-

ly system. Wherever there is electric current in the

tool there are two complete sets of insulation to pro-

tect the user. AI exposed metal parts are isolated

from the internat metal motor components with pro-

tecting insulation.

RULES FOR SAFE OPERATION

IMPORTANT -- Servicing of atool with double in-

sulation requires extreme care and knowledge of the

system and should be performed only by a qualified

service technician. For service, return the tool to

your nearest Sears store for repair which will be

done with original factory replacement parts.

-SWITCH

Atrigger switch controls operation of the Sander.

The trigger switch can be locked on for continuous

operation. To lock, putt trigger, press lock button in-

ward, and release trigger. Pull triggei" and release to

stop.

DANGER: Keep hands and fingers away from moving

sanding belt. Any part of body coming in contact

with moving belt could cause serious injury.

DANGER: Do not wear loose clothing or jewelry

when operating Sander. They could get caught in

moving parts causing injury. Keep head away from

Sander and sanding area. Hair could get caught in

moving parts and foreign objects could get thrown

away from Sander causing injury. Never use in an ex-

plosive atmosphere. Normal sparking of motor could

ignite fumes.

WARNING -- DO NOT ATTEMPT TO OPERATE UNTIL YOU HAVE READ THOROUGHLY AND UNDERSTAND

COMPLETELY ALL INSTRUCTIONS, RULES, ETC. CONTAINED IN THiS MANUAL. FAILURE TO COMPLY CAN

RESULT IN ACCIDENTSoINVOLVING FIRE, ELECTRIC SHOCK, OR SERIOUS PERSONAL INJURY. SAVE

OWNEJ_SMANUAI_-AND RE_IF.W_FREQpENTLY FOR CONTINUING SAFE OPERATION, AND INSTRUCTING

iPOSSIBLE THIRD,PAR'_ USJEB._ ' "

READ

ALl, INSTRUCTIONS

KNQ_YOU_ POWER TOOL -- Read owner s manual carefully. Learn its ap-

_f_ti,c:;a_6r_s_'an'd;lir_'i_tations.as_well as the specific potential haz,_rds peculiar to

thins tool,

2, _U_I_AGA_]Nj_T:_ISk_P.utRiCAL SHOCK BY PREVENTING BODY CONTACT

I/y_,,H G[ROUNDED'SURFACES, For example: Pipes, radiators, ranges, refrig-

ei'_to r enclosures,

3. KEEP GUARDS IN PLACE and in working order.

4. KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.

5, AVOID DANGEROUS ENVIRONMENT. Don't use power tool in damp or wet

locations or expose to rain. Keep work area well lit.

6. KEEP CHILDREN AWAY. All visitors should be kept safe distance from work

area. Do not let visitors contact tool or extension cord.

7. STORE IDLE TOOLS, When not in use, tools should be stored in dry', high or

locked-up place -- out of reach of children. "

Page 2

RULES FOR SAFE OPERATION(Continued)

8. DON'T FORCE TOOL. It will do the job better and safer at the rate for which it

was designed.

9. USE RIGHT TOOL. Don't force small too! or attachment to do the job of a heavy

duty tool. Don't use tool for purpose not intended - for example - Don't use

a circular saw for cutting tree limbs or logs.

10. WEAR PROPER APPAREL. No loose clothing or jewelry to get caught in moving

parts. Rubber gloves and footwear are recommended when working outdoors.

Also, wear protective hair covering to contain long hair.

11. USE SAFETY GLASSES with all tools. Also face or dust mask if cutting

operation is dusty.

12. DON'T ABUSE CORD. Never carry toot by cord or yank it to disconnect from

receptacle. Keep cord from heat, oit and sharp edges.

!3. SECURE WORK. Use clamps or a vise to hold work. It's safer than using your

hand and it frees both hands to operate tool.

14. DON'T OVERREACH. Keep proper footing and balance at all times.

15. MAINTAIN TOOLS WITH CARE. Keep tools sharp at all times, and clean for best

and safest performance. Follow instructions for lubricating and changing ac-

cessories.

16. DISCONNECT TOOLS. When not in use, before servicing, or when changing

attachments, blades, bits, cutters, etc. all tools should be disconnected.

17, REMOVE ADJUSTING KEYS AND WRENCHES, Form habit of checking to see

that keys and adjusting wrenches are removed from tool before turning it on.

18. AVOID ACCIDENTAL STARTING. Don't carry plugged-in tools with finger on

switch. Be sure switch is off when plugging in.

19. OUTDOOR USE EXTENSION CORDS. When tool is used outdoors, use only

extension cords suitable for use outdoors. Outdoor approved cords are marked

with the suffix W-A, for example m SJTW-A or SJOW-A.

20. NEVER USE THIS OR ANY POWER SANDER FOR WET SANDING. Failure to

comply can result in electrical shock causing serious injury or worse.

21. KEEP HANDS AWAY FROM SANDING AREA.

22. NEVER USE IN AN EXPLOSIVE ATMOSPHERE. Normal sparking of the motor

could ignite fumes,

23. INSPECT TOOL CORDS PERIODICALLY and if damaged, have repaired at your

nearest Sears Repair Center.

24. INSPECT EXTENSION CORDS PERIODICALLY and replace if damaged.

25. KEEP HANDLES DRY, CLEAN, AND FREE FROM OIL AND GREASE. Always

use a clean cloth when cleaning. Never use brake fluid, gasoline, or any strong

solvents to clean your tool.

26. STAY ALERT. Watch what you are doing and use common sense. Do not op-

erate tool when you are tired.

27. CHECK DAMAGED PARTS. Before further use of the tool, a guard or

other part that is damaged should be carefully checked to determine that it will

operate properly and perform its intended function. Check for alignment of mov-

ing parts, binding of moving parts, breakage of parts, mounting, and any other

conditions that may affect its operation. A guard or other part that is damaged

should be properly repaired or replaced by an authorized service center unless

indicated elsewhere in this instruction manual.

28. DO NOT USE TOOL IF SWITCH DOES NOT TURN IT ON AND OFF. Have defect-

ive switches replaced by authorized service center.

29, Inspect for and remove all nails from lumber before sanding.

30. DRUGS, ALCOHOL, MEDICATION. Do not operate tool while under the infl-

uence of drugs, alcohol, or any medication.

31. SAVE THESE INSTRUCTIONS. Page 3

OPERATION

Fig. I'"

Fig, 2

TRACKING

Fig, 3

PREPARING FOR OPERATION

For ease of operation your Sander has a front handle and a rear

handle. These handles allow two-hand operation which aids in

maintaining control and keeping sanding area level with

workpiece. When operating your Sander hold the front handle

with your left hand and the rear handle with your right hand as

shown in Fig. 1.

Selecting the correct size and type sanding belt is an extreme-

ly important step in achieving a high quality sanded finish.

Aluminum oxide, silicone carbide, and other synthetic

abrasives are best for power sanding.

In general, coarse grit wilt remove the most material and finer

grit will produce best finish in all sanding operations. The con-

dition of the surface to be sanded witt determine which grit

belt will do the job. If the surface is rough, start with a coarse

grit belt sanding until surface is uniform. Medium grit belt may

then be used to remove scratches teft by the coarser belt and

finer grit belt used for finishing of the surface. Always con-

tinue sanding with each grit belt until surface is uniform.

INSTALLING AND ADJUSTING SANDING BELT

Disconnect sander from power supply.

See Figure 2. Release tension on belt by ;_ushing the front

pulley squarely against the top or edge of workbench. When

the pulley is pushed back it will lock in that position allowing

slack in the belt so it can be removed. Install new belt making

sure arrow on inside of belt is pointing in the direction of rota-

tion which is clockwise when looking into open side of sander.

To put tension on the belt, insert ascrewdriver between the

idler pulley support bracket and the idler pulley support as il-

lustrated and pry toward front of sander.

To adjust sanding belt, connect sander to power supply. Place

sander in an upside down position as illustrated (See Fig. 3),

pull switch trigger and release immediately while observing

tracking of sanding belt. If sanding belt runs outward turn

tracking screw clockwise and counterclockwise if belt runs in-

ward. This should be done until you are sure belt will not come

in contact with striker bar. When you are sure belt wilt not rub

against striker bar start sander and fine adjust the tracking

screw until belt stabilizes. When correctly adjusted, the outer

edge of the belt will be even with the outer edge of sanding

shoe pad (Key 28, page 11). Belt life will be increased ap-

preciably if a few seconds are spent adjusting the belt track-

ing.

NOTE: Idler pulley rubbing housing when in the released posi-

tion without sandpaper is not harmful to the operation of the

tool. The sanding belt, when assembled, wit not allow pulley

to project as far.

TO OPERATE

Clamp or otherwise secure the work to prevent it moving under

the Sander. DANGER: Unsecured work could be thrown back

toward operator causing injury. With Sander off work, press

the trigger switch and when the motor reaches its maximum

speed, lower the Sander on the work with a slight forward mo-

tion. Using the rear handle to control the Sander and the front

handle only to guide it, move it slowly over the work. Allowing

the Sander to remain in one place will result in an uneven sur-

face. The Sander was designed to provide the proper weight on

the sand belt and extra pressure will only result in uneven

work, slow cutting from slow belt speed, clogged belts and

possible motor bum-out.

Use the proper belt when heavy cutting is desired, not heavy

pressure. The importance of this cannot be over-emphasized,

the weight has been built into the tool to give the most effi-

cient pressure at the proper location.

Page 4

MAINTENANCE

WHEN SERVICING USE ONLY IDENTICAL REPLACEMENT PARTS.

BRUSH --!

Fig. 4.

BRUSH REPLACEMENT

Disconnect Sander from power supply before servic.

ing.

1, Remove brush caps (A) with screwdriver, See Fig.

,Remove fibre Washers (B). The washers are

designed to fit tightly in the brush holders to

prevent twisting of brush springs when replacing

brush caps,

3, Remove brushes (C),

4: Reassemble brush with spring into tool making

sure that the curvature of the brush matches

curvature of the motor and thatthe brush moves

freely in the brush holder.

5. Replace fibre washers and brush caps.

LUBRICATION

All bearings in this tool are lubricated with a suffi-

cient amount of high grade lubricant for the life of

the unit under normal operating conditions.

therefore, no further lubrication is required.

Fig. 5

TIMING BELT REPLACEMENT (See Figure 5)

Disconnect sander from power supply before servic-

ing.

1. Remove two screws, Key No. 53 (See parts list,

page eleven) and then remove belt cover Key No.

43,

2. Force old belt off small pulley with a screwdriver

and remove it from large pulley:

3. Install new belt over large pulley first, making

sure teeth on belt mesh with teeth on pulley.

4. Press the belt onto the small pulley.

5. Reassemble belt cover and screws;

Page 5

GENERAL

Only the parts shown on parts list, page eleven, are

Intended to be repaired or replaced by the customer.

All other parts represent an important part of the

double insulation system and should be serviced on-

ly by aqualified service technician.

Avoid using solvents when cleaning plastic parts.

Most piasttcs are susceptible to various types of

commercial solvents and may be damaged by their

use. Use clean cloths to remove dirt, carbon dust,

etc. WARNING: DO NOT AT ANY TIME LET BRAKE

FLUIDS, GASOLINE, PENETRATING OILS, ETC.

COME IN CONTACT WITH PLASTIC PARTS. THEY

CONTAIN CHEMICALS THAT CAN DAMAGE

AND/OR DESTROY PLASTIC.

When electric tools are used on fiberglass boats,

sports cars, etc., it has been found that they are sub-

ject to accelerated wear and'_ble premature

failure, as the fiberglass chips a_n_rfndings are

highly abrasive to bearings, brushes, commutator,

etc. Consequently, it is not recommended that this

tool be used for extended work on any fiberglass

material. During any use on fiberglass it is extremely

_mportant that the tool is cleaned frequently by blow-

ing with an air jet. ALWAYS WEAR SAFETY

GLASSES OR EYE SHIELDS BEFORE BEGINNING

POWER TOOL OPERATION.

EXTENSION CORDS Extension Cord Length Wire Size A.W.G.

25-50 Feet 16

The use of any extension cord wilt cause some loss 50-100 Feet 14

of power. To keep the loss to a minimum and to pre-

vent tool overheating, follow the recommended cord WARNING: CHECK EXTENSION CORDS BEFORE

sizes on the chart at right. When tool is used out- EACH USE. IF DAMAGED, REPLACE IMMEDIATELY.

doors, use only extension cords suitable for outdoor NEVER USE TOOL WITH A DAMAG ED EXTENSION

use and so marked. Extension cords are available at CORD, SINCE TOUCHING THE DAMAGED AREA

Sears Catalog Order or Retail Stores. COULD CAUSE ELECTRICAL SHOCK RESULTING

CAUTION IN SERIOUS INJURY.

The operation of any sander can result in foreign ob.

jects being thrown into the eyes, which can result in

Severe eye damage. Always wear safety glasses or

eye shields before commencing power tool opera,

ti0n. We recommend Wide Vision Safety Mask for

use over spectacles, or standard safety glasses...

available at Sears Catalog Order or Retail Stores.

THE FOLLOWING RECOMMENDED ACCESSORIES ARE CURRENT AND

WERE AVAILABLE AT THE TIME THIS MANUAL WAS PRINTED,

CORD LOCK

Cot, No, 9 2595

CARRYING CASE

Cat, No. 91475

ASSORTED SANDING BELTS

Cat. No. 922304--X.Fine

Cat. No; 922301--Fine

Cat, No. _922302--Medium

Cat. No. _922303--Coarse

Cat. No._9 22305--X-Coarse

DUSTLESS SANDING ATTACHMENT

Car, No, 9 11765

CAUTION: The use of attachments or ecceuortet not listed a_e n_lht be kazerdou=.

Page 6

NOTES

Page 7

NOTES

Page 8

NOTES

Page 9

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OWNERS

MANUAL

SERVICE

MODEL NO.

315,1172I

HOW TO ORDER

REPAIR PARTS

tiJrj,III!, lr ifliiitlifiiII

612547-072

OWNR8 MANU I

CRRFTSMRN

3 INCH

BELT SANDER

DOUBLE INSULATED

Now that you have purchased your Belt Sander,

should a need ever exist for repair parts or service,

simple contact any Sears Service Center and most

Sears, Roebuck and Co. stores. Be sure to provide

all pertinent facts when you cal! or visit.

The model number of your Belt Sander will be found

on the plate attached to the idler pulley support

bracket,

WHEN ORDERING REPAIR PARTS, ALWAYS GIVE

T H E FOLLOWt NG 1N FORMAT IO N:

• PART NUMBER

" MODEL NUMBER

315.11721

• PART DESCRIPTION

• NAME OF ITEM

3" Belt Sander

All parts listed may be ordered from any Seers Service

Center and most Sears stores.

If the parts you need are not stocked locally, your order

will be electronically transmitted to a Sears Repair

Parts Distribution Center for handling,

SEARS, ROEBUCK AND CO., Dept. 698/731A, Sears Tower, Chicago, IL 60684

Craftsman 31511721 User Manual 3 INCH BELT SANDER Manuals And Guides L0807584

CRAFTSMAN Sander Manual L0807584 CRAFTSMAN Sander Owner's Manual, CRAFTSMAN Sander installation guides

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