Jet TG-400 Operator's Manual

.lET

EQUIPMENT & TOOLS

OPERATOR'S MANUAL

TG-400 TOUCH-UP SPRAY GUN

~

"

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Stock No. M-228174

.lET EGUIIIIMENT a TOOLS, INC.

A W"H. Waller Meier Holding Company

PO. BOX1477 / 1901 JEFFERSON AVENUE

TACOMA, WASHINGTON 98401-1477

[206] 572-5000

FAX[phone]

J

"

Revised 6/92

-

Important Information

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1 YEAR

LIMITEDWARRANTY

JEToffersa one year

warrantyon all products

.

REPLACEMEN:riPARTS.

Replacementpartsfor this tool are available directly from JET Equipment& Tools.

To place anorder call 1-800-274-6844. Pleasehave the following informationready:

1. Visa, MasterCardor DiscoverCard number

2. Expirationdate

3. Part numberlistedwithin this manual

4. Shipping address other than a Post Office box

REPLACEMENTPARTS.WARRANTY.

JET Equipment & Tools makes every effortto assurethatparts meet high quality and dura-
bility standards andwarrants to the originalretailconsumer/purchaserof our partsthat each
such part(s)be free from defects in materialsand workmanshipfor a periodof thirty (30)
days from the date of purchase.

~ROOF OF PURCHASE.. .

Please retain yourdated sales receiptas proofof purchase tovalidate the warranty period.

LIMITED TOOL AND EQUIPMENT WARRANTY.'

JET makes every effort to assure that its products meet high quality and durability standards and warrants to the
original retail consumer/purchaser of our products that each product be free from defects in materials and
workmanship as follows: 1 YEAR LIMITED WARRANTY ON ALL JET PRODUCTS. Warranty does not apply to
defects due directly or indirectly to misuse, abuse, negligence or accidents, repairs or alterations outside our

facilities or to a lack of maintenance. JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED
ABOVE FROM THE DATE THE PRODUCT WAS PURCHASED AT RETAIL. EXCEPT AS STATED HEREIN,

ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS ARE EXCLUDED. SOME STATES DO
NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION
MAY NOT APPLY TO YOU. JET SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS
OR PROPERTY OR FOR INCIDENTAL, CONTINGENT, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING
FROM THE USE OF OUR PRODUCTS, SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION
OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY
NOT APPLY TO YOU. To take advantage of this warranty, the product or part must be returned for examination,
postage prepaid, to an authorized service station designated by our Tacoma office. Proof of purchase date and
an explanation of the complaint must accompany the merchandise. If our inspection discloses a defect, JET will
either repair or replace the product or refund the purchase price, if we cannot readily and quickly provide a repair
or replacement, if you are willing to accept such refund. JET will return repaired product or replacement at JET's
expense, but if it is determined there is no defect, or that the defect resulted from causes not within the scope of
JET's warranty, then the user must bear the cost of storing and returning the product. This warranty gives you

specific legal rights, and you may also have other rights which vary from state to state.

JETEquipment&Tools,P.O.Box1477,Tacoma,WA98401-1477:[phone].

Your new model Spray Gun is normally used for touch-ilp,
stenciling and small work spraying. Like any other fine
precision instrument, its most efficient operation depends
on a knowledge of its construction, operation, and main-
tenance. Properly handled and cared for, it will produce
beautiful, uniform finishing results long after other spray
guns have worn out.

TYPESOF INSTALLATION

)

.

1~~ _A"',,',,

d:f~~

l

f1"",,~.

l_j SiphonCup

SIPHON FEED CUP HOOKUP

Ot! and W.,'

E.tractor

Oil and Water

E .tractor

Air

Prl'ssure Cup

PRESSURE FEED CUP HOOKUP

Air pressure for atomization is regulated at extractor;
fluid pressure at cup regulator. For heavy fluids and
internal mix nozzle spraying. fluid adjusted by control
screw on gun'-

Pressure cup also available less regulator.

FluId

PRESSURE FEED TANK HOOKUP

(Single regula tor)

Air pressure for atomization is regulated at extractor.

fluid pressure at tank regulator.

A.. Sor>r>ly

Pr.ssure Tank

FluId

PRESSURE FEED TANK HOOKUP

(Double regulator)

Air pressure for atomization and fluid supply is

by two individual air regulators on tank

rcgulatcJ

~~

nr;~r.

Fluid

FluId'

PRESSURE FEED CIRCULATING HOOKUP

Air pressure atomization regulated at extractor. Fluid

pressure regulated at fluid regulator.

GUN HANDLING

Th~ first requirement for a good resultant finish is the

proper handling of the gun. The gun should be hdd per-

pendicular to the surfate heing covered, and moved par-

allel with it. The stroke should be started before the

Irigger is pulled and the trigger should be released before

the st roke is ended. This gives accurate control of the

gun and material.

The distance between gun and surface shovld be 6 to 10

inches depending on material and atomizing presSure.

TII\: material deposited should always be even and wet.

Lap each stroke over the preceeding stroke to obtain 3

uniform finish.

NOTE: 1. To rp-duce overspray and obtain maximum
efficiency; always spray with the lowest possible atomiz-

ing air pressure.

2. Using fore finger to control trigger provides you
sentitive spraying operation.

CONTROLLING THE FAN SPRAY AND THE FLUID

-

.

Coetting will

be light

at this point

,

Coetting will

be heavy

at this point

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1///

!/ .'

....

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./

"

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----

"-

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WRONG

1 " \

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/Coating should be even

",'0;Mh.. \! a.d wolwho. ,;..

1- _~__L,IV~C'_

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Start Pull Release End of

stroke tri1Xl8r \ trigger stroke

pray width adjustment- Turn right for round, left for fan.

RIGHT

Fluid cont rol screw-Turn to ;jght to decreaseflow, left to increase.

1. If a fluid pressure tank is used. The amount of fluid can also be
controlled by regulating the pressure on the tank.

2. As width of spray is increased, more material must be allowed to
pass through the gun to obtain the same coverageon the increased

area.

3. The direction of the ian spray. either horizontal or vertical, is

obtained by turning the air nozzle to the desired position, then
tightening the retainer ring.

'.

SIPHON SPRAYING

"'"

"

The spray pattern of the gun

. is variable from round to flat

. ~ with all patterns in between.

"'" ......

~s~~~-.~

,'''

.

In normal operation, the wings
on the nozzle are horizontal as

lius trated here. This provides a
vertical fan shaped pattern which
gives maximum even, uniform,
material coverage as the gun is
moved back and forth parallel to
the surface being finished.

Set atomization pressure at approximately 50 psi for
lacquer and 60 psi for enamel. Test spray. If the spray

istoo fme,reducetheairpressureoropenfluid control

screw. If the spray is too coarse, closethe fluid control
screw. Adjust the pattern width and repeat adjustment
of spray if necessary.

PRESSURE SPRAYING
Afterselectingcorrectsizefluidorifice,set fluidpres-

sure for desired flow. Open atomization air an.J test
spray. If spray istoo fine reduce air pressure. If spray is

too coarse,raiseair pressure.Adjustpatternwidth and

repeat adjustment of spray.
Keeping fluid control screw in open position will re-

duce fluid needle wear.

NOTE: To reduce overspray and obtain maxi-

mllm efficienc:v. always spray with the lowest
possible atomization air pres.sure.

2

FAUL TV SPRAV (and how to correct them)

A faulty spray is caused by imporper cleaning or dried material around the
fluid nozzle tip or in the air nozzle. Soak these parts in a solvent that will

soften the dried material and remove with a brush or cloth. Never use
metal instruments to clean the air or fluid nozzles. These parts are care-
fully m~chined and any damage to them will cause a faulty spray. if

either the air nozzle or fluid nozzle is damaged, the part must be replaced

before a perfect spray can be obtained.

PATTERN

~

SPITTING

CAUSE

CORRECTION

Dried material in side.
port" A" restricts passage

of air. Greater flow of air
from cleaner side-port

uB" forces fan pattern in
direct ion of clogged side.

A

ff<~

U

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J,~/)/))/. .

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Dissolve materia! in side-polts with
thinn;r. tilen blow ~un clean. Do not

poke into openin~s with metal instru.
ments.

B

Dried material around
the outside of the fluid

nozzle tip at position
uC" restricts the passage
of atomizing air at one
point through the center
opening of air nonle and
results in pattern shown.
This pattern can also be
caused by loose air no7.-

zle.

fj

~

....

'-d

Remove air nozzle and Wipe off iluid
lip, using rag wet with thiuner. Ti~ht-

en air nozzle.

A split spray or one that is
heavy on each end of a fan
pattern and weak in the mid-
dle is usually caused by (I)
too high an atomizal1on air
pressure, or (2) by attempting
to get too wide a spray with

thin mat-erial,

Reducing air pressure will correct
cause (I). To correct cause (2), open
material control to full position by
turning to left. At the sametime, turn
spray width adjustment to righl. This
will reduce width of spraybut willcor.
rect split spray pattern,

(I) Dried out packingarol;nd
material needle valvepermits
air to get into fluid p2Ssage.
way. This results in spitting,
(2) Dirt between fluid nonle
seat :md body or !ooselyin-

stalled fluid nozzlewill make
gun spit.
(3) A loose or defective swiv-
el nut on siphon cup or ma-
teria) hose can cause spitting.

To correct cause (I)
back up knurled nut
(E), place two drops

of machine oil on

packing, replace nut
and lighten with fing.
ers only. In aggra-
vated cases, replace
packing,

To correct cause (2), remove fluid noz-

zle (F), clean back of nozzle and no7..
zle seat in gun body using rag wet with
thinner, replace nozzle and draw up

tightly against body.
To correct cause (3), tighten or re-
place swivel nut.

.

~

3

.JET

EQUIPMENT & TOOLS

TG-400
Touch Up Gun

517

PART#

DESCRIPTION

OTY

PART# DESCRIPTION

OTY

501 STEM

1

543

SPRING

502 BODY

1

544

SCREW

503 PACKING 1

545 VALVENUT
504 RING 1 549 SPRING
505 SPRING 1 551 TRIGGER
506 RING

1 556

CAP

507 PIN

1 557

AIRCONNECTION
508 CONNECTION 1 5232 AIRNOZZLE
509 TRIGGERSCREW 1 5237 NEEDLEASSEMBLY
514 FLUIDNOZZLE

1

5240 STEMASSEMBLY

517 BODY 1 5241

SIDEPORTCONTROLASSY
530 PACKING

4 700

CUp*
537 LOCK NUT 1 701

CUPCOVER*
538 REARLOCKNUT

1

702

GASKET*

* NOTSHOWNON DIAGRAM

RPK-400 Repair Kit: Contains part # 503, 509, 530, 543
RBK-400 Rebuild Kit: Contains part # 544, 549, 551, 5240, 5237

7/94

4

General Maintenance

SPRAY GUN

I. Immerse only the front end of the gun until solvent

just covers the fluid connection.

2. Use a bristle brush and solvent to wash off accumu-
lated paint.

3. Do not submerge tHeentire spray gun in solvent be-

cause:

a. the lubricant in the leather packings wiJldissolve

and the packings willdry out.

b. the lubricant at wear surfaces willdissolvecausing

harder operation and faster wear.

c. residue from dirty solvent may clvg the narrow air

passagesin the gun.

4. Wipedown the outside of the gun with solventdamp-
ened rag.

S. Lubricate gun daily. Usealight machine oilon:

a. fluid needle packing.
b. air valvepacking.
c. side port control packing.
d. triggerpivot point.
Coat the fluid control springwith vaseline.

6. Caution: Neveruse lubricanIScontaining silicone. This
material may cause finish defects.

PRECAUTIONARY NOTE
All parts on a spray gun should be screwed in hand tight

at first; this will avoid the possibility of cross threading
the parts. If the parts can not be turned by hand easily,

make sure you have the correct parIs. unscrew, realign,

and try again. NEVER use undue force in mating parts.

AIR NOZZLE, FLUID Po!OZZLE,NEEDLE ASSEMBLY

I. All nozzles and needles are precision made. They

sh<)uld be handled with care.

2. Except as described in S., do not make my alterations
in the gun. To do so could cause finishing difficulties.

3. To clean nozzles, soak them in solvent to dissolve any
dried material, then blow them clean with air.

4. Do not probe any of the holes in the noules with
metal instruments. If probing is necessary, use only a

tool that is softer than brass.

S. Adjust the fluid needle valve so that when gun is

triggered, air-flow occurs before f1'Jid-flow.

POINTERS ON CLEANING

WHEN USED WITH A CUP

A compatible solvent should be siphoned through gun by
inserting tube from siphon cup in an open container of sol-
vent. Trigger gun intermittently to thoroughly flush' pas-
sageways and internal parts.

WHENUSEDWITHPRESSURE CUP

Shut off the air supply to the Pressure Tank and release the
pressure in the tank. Hold a piece of cloth over the gun
nozzle and pull the trigger, the air willback up through the

fluid nozzle and force the fluid out of the hose and into the
tank. Remove paint from tank, clean tank and put enough

compatible solvent into the tank to clean the hose and gun
thoroughly. Spray this through the gun triggering the gun

intermittently until it is clean, then blowout the fluid hose

to dry it and remove all traces of materials by attaching it
to the air line.

5

AIR SUPPLY

1/111111111111/1111/111111/1/'::'f /'::.11/1/1//'!.-I.!!1/1/1 ~

Pitch pipe bock toward air Nellvlr

.

Compressor unit

PIPE SIZE. 1.0. line"'"

I

InUl IIdr.ln It
..eh low point

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011and water

I.trador .

"

Drain

r 25 FEETORMORE .,

Oillltd WI- EatrKto, 8houldt. It II., 25 ft. f,om ml eomp.-or. F.rth., jf poIIibli.

The oil Ind _tel' e.trlC1or should not be mounted on
or nllr the lir compressor.

The temperatureofairisgreatlyincreasedduringcom.

pression. }.j the air cools down to room temperature, in
the air line. on its way to the spray 2'Jn, the moisture

contained in it condenses.Thus, for maximumeffective.
ness, the oil and water extractor should be mounted at
some point in the air supply system where the tempera.

ture of thc compressed air in the line is likely to be
lowest.

Ail lines must be properly drained
Pitch all air lines back towards the compressor so that

condensed moisture will flow back into the air receiver
where it can be drained ofi. EachlowSoint in an air line

actsasa water.trap.Suchpointsshoul befittedwithan

easily accessibledrain. See diagramahove.

6

Air Flow

CFM

'0

.,..,"

""

,,""

20

%0" "''' "''' "'''

30

""

%0"

,"

,"

..

O ," ," ," ,"

50 ," ," ,"

,"

10

''' '''

"4"

l'l,"

Air Consumption

Fuild Nozzle

CFM

Pat

Compres$or

Air

Orifice Size

at 8"

Required

Connection

30 psi 50 psi

<p1.8MM

2.8

4.0 8"

1 H.P.

W' NPS(M)

(0.75 W)