Jet J-3130 Service manual

Operating Instructions and Parts Manual
5-Inch x 8-Inch Horizontal Band Saw
Models: J-3130, J-3230
WALTER MEIER (Manufacturing),Inc.
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-414453
Ph.: 800-274-6848 Revision A4 03/2011
www.waltermeier.com Copyright © 2011 Walter Meier (Manufacturing), Inc.
Model J-3130 shown

Warranty and Service
Walter Meier (Manufacturing), Inc., warrants every product it sells. If one of our tools needs service or repair, one of our
Authorized Service Centers located throughout the United States can give you quick service. In most cases, any of these
Walter Meier Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or perform routine
maintenance and major repair on your JET® tools. For the name of an Authorized Service Center in your area call
1800274-6848.
MOREINFORMATION
Walter Meier is consistently adding new products to the line. For complete, up-to-date product information, check with
your local Walter Meier distributor, or visit waltermeier.com.
WARRANTY
JET products carry a limited warranty which varies in duration based upon the product (MW stands for Metalworking, WW
stands for Woodworking).
WHATISCOVERED?
This warranty covers any defects in workmanship or materials subject to the exceptions stated below. Cutting tools,
abrasives and other consumables are excluded from warranty coverage.
WHOISCOVERED?
This warranty covers only the initial purchaser of the product.
WHATISTHEPERIODOFCOVERAGE?
The general JET warranty lasts for the time period specified in the product literature of each product.
WHATISNOT COVERED?
Three Year, Five Year and Lifetime Warranties do not cover products used for industrial or educational purposes.
Products with Three Year, Five Year or Lifetime Warranties that are used for industrial or education purposes revert to a
One Year Warranty. This warranty does not cover defects due directly or indirectly to misuse, abuse, negligence or
accidents, normal wear-and-tear, improper repair or alterations, or lack of maintenance.
HOWTOGETSERVICE
The product or part must be returned for examination, postage prepaid, to a location designated by us. For the name of
the location nearest you, please call 1-800-274-6848.
You must provide proof of initial purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection discloses a defect, we will repair or replace the product, or refund the purchase price, at our option. We
will return the repaired product or replacement at our expense unless it is determined by us that there is no defect, or that
the defect resulted from causes not within the scope of our warranty in which case we will, at your direction, dispose of
or return the product. In the event you choose to have the product returned, you will be responsible for the shipping and
handling costs of the return.
HOW STATE LAWAPPLIES
This warranty gives you specific legal rights; you may also have other rights which vary from state to state.
LIMITATIONS ON THIS WARRANTY
WALTER MEIER (MANUFACTURING), INC., LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED
WARRANTYFOREACH PRODUCT.EXCEPTASSTATEDHEREIN,ANYIMPLIED WARRANTIESORMERCHANTABILITY
ANDFITNESSAREEXCLUDED.SOMESTATESDONOTALLOWLIMITATIONS ON HOW LONGTHEIMPLIEDWARRANTY
LASTS,SOTHEABOVE LIMITATION MAYNOTAPPLYTOYOU.
WALTER MEIER SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR
INCIDENTAL,CONTINGENT, SPECIAL, ORCONSEQUENTIALDAMAGESARISING FROMTHEUSEOF OUR PRODUCTS.
SOME STATES DO NOTALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIALDAMAGES,
SOTHEABOVELIMITATION OR EXCLUSIONMAYNOTAPPLYTOYOU.
Walter Meier sells through distributors only. The specifications in Walter Meier catalogs are given as general information
and are not binding. Members of Walter Meier reserve the right to effect at any time, without prior notice, those alterations
to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever. JET® branded
products are not sold in Canada by Walter Meier.

3
Table of Contents
Cover Page .......................................................................................................................... 1
Warranty............................................................................................................................... 2
Table of Contents ................................................................................................................. 3
GeneralSpecifications ..........................................................................................................4
Warning ............................................................................................................................. 5-6
Operating Instructions...................................................................................................... 7
Clamping materials in the saw vise ....................................................................................... 7
Rightangle cutting ................................................................................................................ 7
Anglecutting......................................................................................................................... 8
Clampingmethods................................................................................................................8
Using the stock stop ............................................................................................................. 9
Bladeselection ..................................................................................................................... 9
Change blade speeds .......................................................................................................... 9
Evaluating cuttingefficiency ................................................................................................ 10
Cutting procedure ...............................................................................................................10
Using the hydraulic feed control.......................................................................................... 10
Blade break-in procedures.................................................................................................. 10
Change blades ...................................................................................................................11
Adjusting blade guides........................................................................................................ 11
Maintenance .................................................................................................................... 11
Motorreplacement.............................................................................................................. 11
Adjusting guide bearings .................................................................................................... 11
Maintenancechart .............................................................................................................. 12
Bladetracking..................................................................................................................... 12
Replacing guide bearings ................................................................................................... 13
Adjusting back-up bearings ................................................................................................ 13
Adjustingthe arm stop adjustmentbolt................................................................................ 13
Adjustingmotor switch actuator .......................................................................................... 13
Replacing a back up bearing .............................................................................................. 13
Ajusting the bearing guide seats for blade vertical............................................................... 14
Testctting to verify adjustmentaccuracy............................................................................. 14
Machine Set-up ............................................................................................................... 15
Wiringdiagram.................................................................................................................... 15
installingcoolantkit ............................................................................................................. 15
Troubleshooting ......................................................................................................... 16-17
Replacement Parts ......................................................................................................... 18
Exploded View and Partslist for Lower Saw Head ........................................................ 19-20
Exploded View and Partslist for Upper Saw Head ........................................................ 21-22
Exploded View and Partslist for Saw Base ................................................................... 23-24
Exploded View and Partslist for Stand & Coolant System............................................. 25-26

4
General
Specifications
TheJET5x8 cutoff bandsaw is availableas
a dry cutting bandsaw or as a wet cutting
bandsaw. Ifrequired, a drycutting bandsawcan
be retrofitted with a kit which converts it to use
with cutting fluids.
The use of a hydraulic feed delivers
consistent accurate cuts and longer blade life.
Cutting capacity 5 inch (127mm) round
7 1/2 inch (190.5mm) wide x 5 inch (127mm) high rectangle
8 inch (203.5mm) wide x 1 inch (25.4mm) high flat stock
4 1/2 inch (114.3mm) wide x 5 inch (127mm) high at 45 degrees
Speeds 85,125,200 SFM
Blade drive Steel, heat treated worm driving a bronze worm gear in an oil bath
Saw guides Ball bearing mounts on an eccentric shaft, ball bearing rear guide
bearings -- all bearings sealed and permanently lubricated
Motor 1/2 HP, 115/230V, 1725RPM capacitor start
Blade wheels 7-3/8 inch (187mm) diameter flanged cast iron
Saw blades 1/2 x .025 x 68 inches
Floor model dimensions Width 16 inches overall (400mm)
Height 38 inches overall with arm horizontal (950mm)
Height 58 inches overall with arm vertical (1450mm)
Length - 38 inches (950mm)
Optional wetcuttingpkg. 1 gallon (4.5L) capacity tank, pump motor: single phase 120V
Model Stock Number
J-3130 414461
J-3230 414453

5
-Always follow instructionsinOperating Instruc-
tionsand PartsManualwhen changing acces-
sory tools or parts.
-Nevermodifythemachine without consulting
WalterMeier (Manufacturing) Inc.
You - the Stationary Power Tool User - Hold
the Key to Safety.
Readand follow thesesimple rulesforbest results
andfullbenefitsfrom your machine.Used properly,
JET machinery is among the best in design and
safety. However, any machine usedimproperly can be
renderedinefficientandunsafe. It is absolutely
mandatorythat those whouse ourproductsbe
properly trained in how to use them correctly. They
shouldreadandunderstandtheOperatingInstructions
and Parts Manual as well as all labels affixed to the
machine. Failurein following all ofthese warningscan
causeserious injuries.
Machinery General Safety Warnings
- Misuse of this machine can cause serious injury.
-For safety, machine must be set up, used and
servicedproperly.
-Read,understandand followinstructions inthe
OperatingInstructionsandPartsManual which
wasshippedwithyour machine.
When Setting up Machine:
-Alwaysavoid using machineindamp or poorly
lighted work areas.
-Always be sure the machine support is se-
curely anchored to the floor or the work bench.
When Using Machine:
-Always wear safety glasses with side shields
(SeeANSI Z87.1)
-Neverwearlooseclothing or jewelry.
-Neveroverreach-youmayslipandfall.
When Servicing Machine:
-Always disconnect the machine from its electri-
cal supply while servicing.
cal power to the machine must be discon-
nectedbeforework is done.
9. Maintain all machine tools with care. Follow
allmaintenanceinstructionsfor lubricating and
thechanging of accessories. Noattempt shall
bemadeto modify or havemakeshift repairs
done to the machine. This not only voids the
warrantybutalsorenders the machine unsafe.
10.Machinery must be anchoredto thefloor.
11. Secure work. Use clamps or a vise to hold
work, when practical. It is safer than using
yourhandsand it frees bothhands to operate
themachine.
12.Never brush away chipswhile the machineis
inoperation.
13.Keepwork area clean. Cluttered areasinvite
accidents.
14.Removeadjustingkeysandwrenchesbefore
turningmachineon.
15. Use the right tool. Don’t force a tool or attach-
ment to do a job it was not designed for.
16.Useonly recommended accessories and
followmanufacturersinstructionspertainingto
them.
17.Keep hands in sightandclear of all moving
parts and cuttingsurfaces.
18.All visitors should be kept at a safe distance
fromthe work area. Maketheworkshop com-
pletely safe by using padlocks, master
switches, or by removing starter keys.
19. Know the tool you are using - its application,
limitations, and potential hazards.
1. Alwayswearprotectiveeyewear when
operating machinery. Eye wear shall be
impactresistant,protective safetyglasses with
side shields which comply withANSI Z87.1
specifications. Use of eye wear which does
notcomply withANSIZ87.1specifications
couldresultinsevere injury from breakage of
eyeprotection.
2. Wearproperapparel. Noloose clothing or
jewelrywhich can getcaught inmovingparts.
Rubbersoledfootwearisrecommendedfor
bestfooting.
3. Do not overreach. Failure to maintainproper
working position can cause you to fall into the
machine or cause your clothing to get caught
pullingyou into themachine.
4. Keepguardsinplaceand in proper working
order. Do not operate the machine with guards
removed.
5. Avoiddangerousworkingenvironments. Do
not use stationary machine tools in wet or
damplocations. Keepworkareas clean and
well lit.
6. Avoid accidental starts by being sure the start
switch is OFF before plugging in the ma-
chine.
7. Neverleavethemachinerunning while unat-
tended. Machine shall be shut off whenever it
isnot in operation.
8. Disconnectelectricalpowerbeforeservicing.
Wheneverchanging accessories or general
maintenance is done on the machine, electri-

6
BCD
8. Bringadjustablesawguides and guardsas close
as possible to the workpiece.
9. Alwayswearprotectiveeyewear when operating,
servicing,or adjusting machinery. Eyewear shall
beimpactresistant, protective safetyglasses
with side shields complying withANSI Z87.1
specifications. Use of eye wear which does not
complywithANSI Z87.1 specificationscould
resultinsevereinjury from breakage ofeye
protection. See Figure B.
10.Nonslipfootwearand safety shoes are recom-
mended. See Figure C.
11. Wearear protectors (plugsor muffs) during
extended periods of operation. See Figure D.
12. The workpiece, or part being sawed, must be se-
curelyclampedbefore the saw bladeenters the
workpiece.
13. Removecut offpiecescarefully, keeping hands
awayfromsaw blade.
14. Saw must be stopped and electrical supply cut
off or machine unplugged before reaching into
cuttingarea.
15. Avoidcontact with coolant,especially guarding
your eyes.
A
1. Always wear leather gloves when handling saw
blade. Theoperatorshallnot wear gloves when
operatingthemachine.
2. Alldoorsshall be closed,allpanelsreplaced, and
othersafety guards inplace priorto themachine
beingstartedoroperated.
3. Be sure that the blade is not in contact with the
workpiece when the motor is started. The motor
shall be started and you should allow the saw to
comeup to fullspeed beforebringing thesaw
blade into contact with the workpiece.
4. Keep hands away from the blade area. See
Figure A.
5. Removeanycutoffpiececarefullywhilekeeping
yourhandsfreeof the blade area.
6. Saw must be stopped and electrical supply must
becutoffbeforeany blade replacement or
adjustmentof blade support mechanismis done,
orbefore any attemptis madetochange the
drivebeltsor before any periodic serviceor
maintenanceisperformedon the saw.
7. Removelooseitemsandunnecessary
workpiecesfromareabeforestartingmachine.
20.Some dust createdby powersanding,sawing,
grinding,drillingandother construction activities
contains chemicals known to cause cancer, birth
defectsorotherreproductiveharm. Some
examplesof these chemicalsare:
Leadfromleadbasedpaint
crystalline silica from bricks and cement and
othermasonryproducts,and
arsenicandchromium from chemically-
treated lumber.
21.Your risk fromthose exposuresvaries, depending
on how often you do this type of work.To reduce
your exposure to these chemicals: work in a
wellventilated area, andworkwithapproved
safety equipment, such as those dust masks
that are specifically designed to filter out
microscopic particles.
General Electrical Cautions
Thissawshould be grounded inaccordance with the
NationalElectricalCode and local codesand ordi-
nances. This work should be done by a qualified
electrician. Thesaw should begrounded toprotect
the user from electrical shock.
Wire SizesCaution:
For circuits which are far away from the electrical
service box, the wire size must be increased in order
todeliver ample voltage to themotor. To minimize
powerlossesand to prevent motor overheating and
burnout, the use of wire sizes for branch circuits or
electricalextension cords according tothe following
tableisrecommended.
Safety Instructions on Sawing Systems
ConductorLength AWG(AmericanWireGauge) Number
240 Volt Lines 120 Volt Lines
0 - 50 Feet No.14 No.14
50 - 100 Feet No. 14 No.12
Over100 Feet No. 12 No. 8

7
Operating Instructions
Figure 1: 5x8 saw nomenclature
6. Turn the vise handwheel clockwise until the work
piece is securely clamped in the vise.
7. Proceed to cut according to instructions in
Cutting procedure.
Note: If the work piece material is long, support
both the ends of the material as needed to keep
the material level on the saw base.
3. Open the left vise by turning the vise handwheel
counterclockwise.
4. Adjust the vise jaws for the appropriate cutting
angle, if required. See sections on Right angle
cutting and Angle cutting.
5. Put the work piece material between the vise
jaws.
Note: Use the handle on the arm to lift the
arm. Never use any other part of the arm
as a lifting method.
Clamping materials in the saw vise
Refer to Figure 1.
1. Lift the saw arm to its full up position.
2. Lock the arm up using the hydraulic feed control
valve.
Right angle cutting
Refer to Figures 1 and 2.
If you want to be certain the workpiece is
being held in the vise at exactly 90 degrees to the
blade for cutoff work, use the following procedure to
check the blade-to-jaw angle.
1. Disconnect the saw from its electric power
source.
2. With the saw arm in its fully lowered position,
place a machinist's square,or a machinist's protrac-
tor 90 degrees, against the saw blade and right vise
jaw. If the jaw is square to the blade, then no
adjustment is required.
3. If adjustment is required, see Angle Cutting. The
procedure for setting the jaw angle with respect to
the blade is described in that section.
Leftbladeguide
lock knob
ON/OFFswitch
actuator
Leftvise lock
bolt
ON/OFF
switch
Cuttingfluid
trough
Leftvise Base
Leftvise
handwheel
Stock
stop set
screw
Stock stop Wheel kit
Blade
relief
slot
Hydraulic
controlvalve
Rightvisejaw
pivotbolt
Rightblade
guidelock
knob
Rightvisejaw
Arm stop
adjustmemt
Left and right guide
bearingseats Pulleycover
Bladetension
knob
Arm lift
handle Arm Motor

8
Figure 2: Using a protractor to set the vise jaws at
desired angle. By setting the protractor to 90
degrees, or using a machinist's square, the jaws
can also be set square with respect to the blade.
Angle cutting
Refer to Figure 2.
1. Loosen the right jaw pivot and lock bolts.
2. With the arm in its fully lowered position, and
using a machinist's protractor between the saw
blade and right vise jaw, set the angle of the right
jaw to the required angle.
3. Tighten the pivot and lock bolts.
4. Lift the saw arm to its full up position and lock it
up using the hydraulic feed control knob.
Note: Use the handle on the arm to lift the arm.
Never use any other part of the arm as a lifting
method.
5. Loosen the left jaw lock bolt.
6. Use the handwheel to move the left jaw until it
touches the right jaw firmly.
7. Snug the left jaw lock bolt. Both vise jaws are
now the correct angle for the required cut.
Note: There is a scale on the back of the saw
table which allows you to set up for angle cuts
without using a protractor. See Figure 3.
These angles should be considered approxi-
mate, and the protractor method should be
used where higher accuracy is required.
Figure 3: Using the scale on the rear of the saw
base to set the jaws for angle sawing. Where the
edge of the right jaw crosses the scale an approxi-
mate angle cut can be made to the indicated
number of degrees on the scale.
Clamping methods
The method for clamping different cross-
section work pieces is shown in Figure 4.
Figure 4: Clamping methods for various cross-
sections of stock

9
Figure 5: Setting the stock stop cutoff length
Using the stock stop
When cutting a number of identical pieces, the
use of the stock stop can speed operations.
Refer to Figures 1 and 5.
1. Disconnect the saw from its electric power
source.
2. With the arm in its fully lowered position, loosen
the stock stop set screw.
3. Slide the stock stop to the required distance
from the blade.
4. Rotate the stock stop so the stop is at the lowest
possible position for stopping the work piece at the
required distance. This will help prevent any
binding between the work piece and blade when the
cut is completed.
5. Tighten the stock stop set screw securely.
6. For best accuracy, make a test cut on a piece of
scrap material to verify the length of cut using the
stock stop.
Bladeselection
The saw is delivered with a blade adequate for
a variety of jobs on a variety of common materials.
However, JET'sblades,whileappropriatetomany
shop cutting needs, don't begin to exhaust the wide
varietyofspecial blades availablefor special cutting
jobs. For high production cutting of special materi-
als, or for hard-to-cut materials such as stainless
steel, tool steel, titanium, etc., ask your industrial
distributor for more specific blade recommenda-
tions.
Table 1: Recommended blade speeds
Figure 6: Blade speeds and belt positions
Changingbladespeeds
1. Refer to Table 1 for recommendations on blade
speed for various materials.
Note: These are approximate speeds.
Different alloys and section materials and the
use of cutting fluid may require other speeds.
Check you machinists' handbook, or ask for
recommendations from your blade, cutting
fluid or work piece suppliers for specific
recommendations on specific material.
2. Disconnect the saw from its electrical power
source.
3. With the arm in its fully lowered position, remove
the pulley cover lock screw and open the pulley
cover. Refer to Figure 6 for speeds and belt
positions.
4. To change the belt position (and, therefore, the
blade speed) first loosen the motor plate adjustment
lock nut. Refer to Figure 8 for the position of the
motor plate adjustment screw and locknut.
5. Turn the adjustment screw counterclockwise
until the belt can be move to the pulley position
required.
6. Turn the adjustment screw clockwise to tension
the belt until there is 1/2 inch of play in the belt as
shown in Figure7.
7. Tighten the adjustment lock nut.
8. Close the pulley cover and secure it shut with
the lock screw.
9. Reestablish electrical power to the saw and
proceed with cutting.
Figure 8: Motor plate adjustment screw
Figure 7: Setting correct play in drive belt
Material Speed
Steel shapes and low carbon steel 125
Medium and high carbon steel 85
Cr-Molysteel 125
Chromiumsteel 125
Tool steel 85
Castiron 85
Aluminum 85-125
Mostplastics 200
Wood 200

10
Evaluating cutting efficiency
Is the blade cutting efficiently? The best way
to tell is by observing the chips formed by the blade
as it cuts.
If the chip formation is powdery, then the feed
is much too light or the blade is too dull.
If the chips formed are curled, but straw or
blue colored, then the feed rate is too high.
If the chips formed are curled but not colored,
then the blade is sharp enough and cutting at an
efficient rate.
Cutting procedure
1. Never start a cut with the blade resting on the
work piece.
2. Be certain you knock off the sharp corners of
any work piece material which might damage the
blade. See Figure 4.
3. Have the motor ON and running at full speed
before lowering the blade into the cut.
4. Use the hydraulic control valve to feed the blade
into the work piece.
5. If you use a cutting fluid, turn the valve on before
beginning the cut.
Blade break-in procedures
New blades are very sharp, and therefore
have a tooth geometry which is easily damaged if a
careful break-in procedure is not followed. You may
want to consult manufacturers' literature for break-
in of specific blades on specific materials. How-
ever, the following break-in procedure will be
adequateforbreak-inofJETsuppliedblades.
1. Clamp a 2 inch or larger work piece in the saw.
2. Set the blade speed to its required speed. See
Changing blade speeds.
3. If possible, use a cutting fluid during break-in
cuts.
4. Set the hydraulic control valve just enough to
begin a very light cut on the work piece.
5. When the blade has cut 1/3rd of the way through
the work piece, increase the feed rate slightly and
allow the blade to complete the cut.
6. Make another cut on the stock. Begin the cut
with the control valve set at the same feed rate you
finished the first cut.
7. 1/3rd of the way through the second cut, in-
crease the rate of feed until the blade is cutting at
its most efficient rate. See Evaluating cutting
efficiency.
8. Allow the saw to complete this second cut. The
blade can now be considered ready for regular
service.
Note: There are flanges on the back face
of the drive and idler wheels to prevent the
blade from "walking off" the back of the
wheels. If these flanges are damaged the
wheels must be replaced. Check blade
tracking whenever changing a blade to be
certain the blade is positioned correctly on
the wheels. See Blade tracking in the
Maintenance section of this manual.
Figure 9: Hydraulic feed control
Using the hydraulic feed control
Refer to Figure 9.
The hydraulic feed control cylinder is a "single
action" hydraulic cylinder. This allows you to lift the
arm at any time, easily, but controls the downward
movement of the arm using a valve on the top of the
cylinder.
When the control valve is turned fully clock-
wise the cylinder is "locked" and the saw arm will
not move downward. You can lock the arm, using
the valve, at any position in its travel. This allows
you to lock the arm in its up position for operations
which require it. And it allows you to lock the arm
in positions which allow you to adjust work piece
length, etc.
Most important, use of the valve allows you to
begin any cuts "gently," which can greatly extend
the life of the blade. Simply open the valve slightly
to begin the cut, then open the valve to effective
cutting feed. See Evaluating cutting efficiency.
The valve is also important when breaking in
any new blades. See Blade break-in procedures.