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Graco KING A Series Operation manual

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INSTRUCTIONS
-
PARTS
LIST
307-605
ORACO
SUPERSEDES
0
Rev
E
WARNINGS
and
INSTRUCTIONS
This
manual
contains
IMPORTANT
READ AND RETAIN FOR REFERENCE
With
Priming
Piston
KING@ AND BULLDOG@
SHOVEL
PUMPS
25:l
RATIO
BULLDOG
175
bar
125LW
psil
MAXIMUM
WORKING PRESSURE
200
liter
(55
gellon) drum size
Model 217-565,
Series
A
Model 217-564, Series
A
19
liter
(5
gallon) ram size
2BL)
bar
(4bw
psi)
MAXIMUM
WORKING PRESSURE
40:l
RATIO
BULLDOG
200
liter
(55
gallon) drum size
Model 217568, Series
A
Model 217-567, Series
A
19
liter
(5
gallon) ram size
345
bar
(5ow
psil
MAXIMUM
WORKING PRESSURE
55:l
RATIO
KING
200
liter
(55
gallon) drum size
Model 217-566, Series
A
Model 217-568 shown
!
GRACO INC.
P.0.
B
O
X
1441 MINNEAPOLIS,
MN
55440
-
1444
@COPYRIGHT
1985,
GRACO
INC.
!
~~
..
~.
..
..
.
..
..
. ..
,.
.
..
,..
..
TABLE
OF
CONTENTS
TERMS.
.....................................................................
1
WARNINGS
...............................................................
2
.INSTALLATION
Grounding
..............................................................
4
Accessories
............................................................
4
OPERATION
Flush the Pump
........................................................
5
Start end Adjust
the
Pump
........................................
5
Shutdown
and
Care
of
the Pump
...............................
5
SERVICE
Troubleahootlng
......................................................
6
Displacement Pump Service
.....................................
7
PARTS LISTS AND DRAWINGS..
................................
10
HOWTO
ORDER
REPLACEMENT PARTS....
.................
11
ACCESSORIES......
...................................................
16
WARRANTY Back Cover
DIMENSIONAL DRAWING
21
TECHNICAL
DATA
....................................................
la
.........................................
................................................
TERMS
Be
sure you read and understand each
of
these terms
before
reading the
rest
of
the manual.
be
e
simple cut, caused by the high prmure injection of fluid directty
FLUlDlNJECTlONlNJURY
Asarlousinjury,whichmeyappearto
into the body.
WARNINQ
Alerm
user to avoid or correct conditions which could
NOTE
Give8
additionel explanation
of
a
procedure or helpful hints.
ceuse
bodily
injury.
CAUTION
Ale-
usar
to
avoid or correct WnditioM which could
FLUID
Anyfihemicel. such
as
paint.
water,
saalant,
stain,
lacquer.
ceusa damage to or destruction
of
equipment. mlvents, stc., which
is
used
in the sprey
or
dispsnsing equipment.
PRESSURE RELIEF PROCEDURE
A
safety
procedure for
reliw-
QUN SAFETY LATCH
A
device on the spray gun or dispensing
valve
which can
be
secured and prevent dispensing fluid through the
ing
air
and fluid pressur# in
the
system.
gun
M
valve.
WARNING
HIGH
PRESSURE SPRAY CAN CAUSE SERIOUS INJURY.
FOR
PROFESSIONAL USE ONLY.
OBSERVE
ALL
WARNINGS. Read and understand
all
instruction manuals before operating equipment.
FLUID INJECTION
HAZARD
AIS
equipment
g neretes very high fluid pressure. Spray from
the
gun,
leaks or ruptured components can inject fluid
qnerd Safe?
through your skin and into your body and cause extremely
fluid injected or splashed into the eyes or onto the skin can
serious bodily injury, including the need for amputation. Also,
cause serious damage.
any part of the body. NEVER put hand or fingers over the
NEVER point the spray gunldispensing valve at anyone or at
spray tiplnozzle. NEVER try to
"
blow back" paint; this is NOT
an air spray system.
ALWAYS have the
tip
guard in place on the spray gun when
spraying.
ALWAYS follow the Pressure Relief Procedure, a1
the
vicing any system equipment.
right, before cleaning or removing the spray tiplnoule
or
ser-
NEVER try to stop or deflect leaks
with
your hand or body.
before each use.
Be sure the equipment safety devices are operating properly
Note
to
Ph
sician: In e tio
'n
the skin is a traumatic injury,
1'
1s
ImportaLt
to
treaj tie
&ry
surg/cally as
soon
as poss~.
ble. Do not delav treatment to research toxicitv. Toxicitv is a
concern with some exotic coatings injected dfrectly into the
blood stream. Consulatation with a plastic surgeon or
reconstructive hand surgeon may be advisable.
Safety
Latch
Whenever you stop spraying, even for
a
moment, always set
the gunldispensing valve safety latch in the closed or
"
safe
"
position, making the gunldispensing valve inoperative. Failure
to set the safety latch can result in accidental triggering of the
gunldispensing valve.
Diffuser
lonly
on
spray
guns)
The gun diffuser breaks up spray and reduces the risk of fluid
injection when the tip is not installed. Check the diffuser
operation regularly. Follow the
Pressure
Relief Procedure,
to
the right, then remove the spray tip. Aim the gun into a
grounded metal pail, holding the gun firmly to the pail. Using
fed is not diffused into an irregular stream, replace the diffuser
the lowmt possible pressure, trigger the gun. If the fluid emit-
immediately.
Tip
Guard
lonly
on
spray
guns)
ALWAYS have the tip guard
in
place
on
the spray
gun
while
spraying. The tip guard alerts you to the injection hazard and
helps reduce, but does not prevent, accidentally placing your
fingers or any part
of
your body close to the spray tip.
Trigger Guard
guard removed. This guard reduces the risk of the gunldis
-
NEVER operate the gunldispensing valve with the trigger
pensing valve triggering accidentally if
it
is dropped or
bumped.
8k%x~e%%%n%% cleaning or changing spray
tipslnozzles. If the spray tiplnoule clogs while sprayingldis-
pensing, engage the gunldispensing valve safety latch im
-
mediately. ALWAYS follow the Pressure Relief Procedure
and then remove the spray tiplnozzle to clean
it.
pressure is fully relieved and the gun or dispensing valve safety
NEVER wipe
off
build
-
up around the spray tiplnozzle until
latch is engaged.
yo
reduce tffe r$ of sertous odlly injury, including injection,
splashing in the eyes, or injury from moving parts, always
follow this procedure whenever you shut
off
the pump, when
checking or servicing any pan.of the sprayldispensing system,
when installing, cleaning or changing spray tipslnozzles. and
whenever you stop sprayingldispensing.
2. Shut
off
the air to the pump.
1. Engage the gunldispensing valve safety latch.
3. Close the bleed
-
type master air valve (required in your
4.
Disengage the safety latch.
5.
Hold
a
metal part of the gunldispensing valve firmly to the
side of
a
grounded metal pail, and trigger the gunldispens-
ing valve to relieve pressure.
ressure
ell
f Procedye
,
system).
7. Open the drain valve andlor the pump bleeder valve (re-
6.
Engage the gunldispensing valve safety latch.
quired in your systeml, having
a
container ready to catch
the drainage.
8.
Leave the drain valve open until you are ready to
sprayldispense again.
If
you suspect that the spray tip/nozzle
or
hose
is
completely
clogged,
or
rhat pressure has
nor
been fully relieved after
following the steps above, VERY SLOWLY loosen the retain-
then loosen completely. Now clear the tiplnozzie or hose.
ing nut or hose end coupling and relieve pressure gradually.
EQUIPMENT MISUSE
HAZARD
General Safe
Any misuse ,?the sprayldispensing equipment Or ac- NEVER exceed the recommended working pressure or the
S
stem Pressure
cessories, such as overpressurizing. modifying parts, using in
-
compatible solvents and fluids, or using worn or damaged maximum air inla pressure stated on your pump or in the
parts, can cause them to rupture and result in injection or TECHNICAL DATA on pages 18-20,
other serious bodily injury, fire, explosion or property damage. Be sure
that
all
sprayldispensing equipment and accessories
NEVER alter or modify any part of this equipment; doing
so
are rated to withstand the maximum working pressure of the
could cause
it
to malfunction. pump. DO NOT exceed the maximum working pressure of any
component or accessory used in the system.
CHECK
all
sprayldispensing equipment regularly and repair or
replace worn or damaged parts immediately. Read and follow
Fluid pqpibiliw
BE
SU
Et tell flulds and solvents used are chemically com-
the fluid and solvent manufacturer's literature regarding the patible with the wetted parts shown in the TECHNICAL DATA
use of protective clothing and equipment. on pages 1820. Always read the manufacturer's literature
2
307
-
605
before using
fluid
or solvent
in
this pump.
..
..
..
.,
..
.'.,
FIRE
OR
EXPLOSION HAZARD
Static electrlcity is created by the high velocity flow of fluid
through the pump and hose. If every part of the
sprayldispensing equipment is not properly grounded, spark
-
ing
may occur, and the system may become hazardous.
Sparking may also occur when plugging in or unplugging a
power supply cord. Sparks can ignite fumes from solvents and
the fluid being sprayedldispensed, dust particles and other
flammable substances, whether you are sprayingldispensing
indoors or outdoors, and can cause
a
fire or explosion and
serious bodily injury and property damage.
Do
not plug in or
unplug any power supply cords
in
the sprayldispensing area
when there is any chance of igniting fumes still in the air.
while using this equipment, STOP SPRAYING IMMEDIATE-
If you experience any static sparking or even
a
slight shock
LY. Check the entire system for positive grounding.
Do
not
use the system again until the problem has been identified
and
corrected.
Grounding
To reduce the risk of static sparking, around the pump and all
other equipment used or located
inihespray/dispensing area.
structions for your area and type of equipment. BE SURE to
CHECK your local electrical code for detailed grounding
in-
ground
all
of this equipment:
1.
Pump:
use a ground wire and clamp as shown
in
Fig 1.
2.
Air and
fluid
hoses: use only grounded hoses with a max
-
imum of 150 m 1500 feet1 combined hose length to ensure
grounding continuity. Refer
to
Hose Grounding
Con
-
tinuity.
3. Air compressor: follow the air compressor manufacturer's
recommendations.
4.
Spray gun/dispensing valve: obtain grounding through
connection to a properly grounded fluid hose and pump.
5.
Object being sprayed: according to local code.
6. All solvent pails used when flushing, according
to
local
code. Use only metalpails, which are conductive.
Do
not
or cardboard, which interrupts the grounding continuity.
place the pail on a non
-
conductive surface, such as paper
7.
To
maintain grounding continuity when flushing
or
reliev
-
ing
pressure, always hold a metal part of the gunldis
-
pensing valve firmly to the side of a grounded metal pail,
then trigger the gunldispensing valve.
and washer
(0).
Insert one end of
a
1.5 mm I12 gal minimum
To
ground the
pump,
loosen the groundirp lug locknut IA)
ground wire ID1 into the
slot
in
lug
IC) and tighten the locknut
securely. See Fig 1. Connect the other end of the wire to a
true earth ground. See ACCESSORIES on page 17 to order a
ground wire and clamp.
Before
flushing,
be sure the entire system and flushing pails
Flushing Safety
are properly grounded. Refer to Grounding. above. Follow
spray tip/nozzle from the gunldispensing valve. Always use
the Pressure Relief Procedure on page
2,
and remove the
the lowest possible
fluid
pressure, and maintain firm metal-to-
during flushing to reduce the risk of injection injury, static
metal contact between the gunldispensing valve and the pail
sparking and splashing.
HOSE
SAFETY
hose develops a leak, split or rupture due to any kind of wear,
High pressure fluid
in
the hoses can be very dangerous. If the HANDLE AND ROUTE HOSES CAREFULLY. Do not pull on
hoses to move equipment.
Do
not use fluids which are not
damage or misuse, the high pressure spray emitted from
it
can compatible with the inner tube and cover of the hose.
DO
NOT
pew damage.
cause an injection injury or other serious bodily injury
or
pro
-
'
expose Graco hoses
to
temperatures above 82OC (180°FI or
ALL FLUID HOSES
MUST
HAVE SPRING GUARDS1 The
,
Hose
Grounding
Continuity
spring guards help protect the hose from kinks or bends at or Proper hose grounding continuity is essential
to
maintaining a
close
to
the coupling which can result in hose rupture. grounded spray system. Check the electrical resistance of your
air and fluid hoses
at
least once a week. If your hose does
not
TIGHTEN all fluid connections securely before each use. High have a tag on
it
which specifies the maximum electrical
pressure fluid can dislodge a loose coupling or allow high resistance, contact the hose supplier or manufacturer for the
pressure spray to be emitted from the coupling. maximum resistance limits. Use a resistance meter in the ap-
NEVER use a damaged hose. Before each use, check the en
-
~ resistance exceeds the recommended limits, replace
it
im-
propriate range for your hose to check the resistance. If the
tire hose for cuts, leaks, abrasion, bulging cover. or damage or mediately. An ungrounded or poorly grounded hose can make
movement of the hose couplings. If any of these conditions . your system hazardous. Also, read
FIRE
OR
EXPLOSION
exist, ieplace the hose immediately.
DO
NOT try to recouple HAZARD, above.
high pressure hose or mend
it
with tape or any other device. A
repaired hose cannot contain the high pressure fluid.
below
-40°C
(-4OOF).
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers or other
body parts. When the pump
is
operating, the p!iming piston
fingers and hands away from the priming piston.
(located at the pump intake) and the air motor plston (located Before attempting to clear an obstruction from the priming pis-
behind the air motor plates) move. Therefore, NEVER operate ton or service the pump, follow the Pressure Relief
Proce-
the pump
with
the air motor plates removed, and keep your
dum
on
page
2
to
prevent the
pump
from starting accidentally.
IMPORTANT
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards-par-
ticularly the General Standards, Part 1910, and the Construction Standards, Part 1926
-
should be consulted.
307-605
3
.. .
,.
.
:
..:
,,
. .
..
..
.
..
. ..
TYPICAL
~~
,
INSTALLATION
D
Ground Wire
E
Air Line Filter
F
Air Line Oiler
0
Bleed
-
Type Master Air
Valve
J
Fluid Drain
Valve
H
Air Reguletor
and
Gauge
K
Main Fluid Dispensing
Hose
L
Whip
Hose
M
Air Supply
Hose
N
314
npsmlf) Air Inlet
R
Pump Runaway
Valve
NOTES:
The reference numbers and letters in paren-
theses in the text'refer to the callouts in
Figures 1-4 and
the
Parts
Drawing.
The Typical Installation shown above
is
only
a
guide to selecting and installing required
and optional accessories. For assistance in
designing
a
system to suit your partlcular
needs, contact your Graco representative.
The dimensional drawing on page
21
gives
measurements needed for installing the pump on a
custom designed mounting. Mounting accessories are
shown on page
16.
If your pump is mounted in
a
ram or
an elevator, refer to the manual supplied with it'for in-
stallation and operation instructions.
Grounding
IRNING1
explained under FIRE
OR
EXPLOSION
HAZARD
Before operating the pump, ground the system as
and
Grounding
on page 3.
Accessories
CESSORIES on page
16
and
17
for assistance in setting
Refer to the TYPICAL INSTALLATION drawing and AC-
Sure they are adequately sized to meet the system's re-
up your system.
If
you supply your own accessories, be
quirements.
air inlet of the pump. Upstream from the pump air inlet,
Connect
a
grounded
air
supply hose to the 314 npsm(f)
install an air line oiler IF) for automatic air motor lubrica-
tion. Upstream from the oiler, install an air regulator
(H)
and an air line filter
(E)
to remove harmful dirt and
moisture from your compressed air supply, and
a
bleed-
tvDe
master air valve
(GI.
Be
sure the valve is easily ac-
I
cessible from the pump. A pump runaway valve
(d)
in
-
stalled on the
air
line senses when the pump is running
i
too fast and shuts off the air supply to the motor.
WARNING
Two accessories are required
in
your system:
a
bleed
-
type master air valve
(GI
and
a
fluid drain
valve
IJ).
These accessories help reduce the risk
of serious bodily injury including injection,
splashing in the
eyes,
and injury from moving
parts
if
you are adjusting or repairing
the
pump.
trapped between
this valve and the pump
after
the
The bleed-type master. air valve relieves air
air
is
shut
off.
Trapped air can cause the pump to
cycle unexpectedly. Locate the valve close to the
pump.
The
fluid
drain valve assists in relieving fluid
gun; triggering
the
gun
to
relieve pressure may
pressure in the displacement pump, hose and
not be sufficient.
Using
a
suitable adapter, connect
a
fluid drain valve
(J)
near the
1
"
npt(f) fluid outlet of the pump. Then con-
nect
a
grounded fluid supply hose
(K).
For more flexible
gunldispensing valve movement, use a shorter
13
mm
(112
in.)
ID
hose (L) between the gunldispensing valve
and the main hose.
I
(
4
307-605
~~~~
OPERATION
WARNING
cluding injection,'splashing
in
the
eyes,
or injury
To reduce the risk of serious bodily injury, in-
from moving parts,. always follow the Pressure
off
the pump, when checking or servicing any part
Relief
Procedure on page
2
whenever you shut
of the sprayldispensing system, when installing,
whenever you stop spraying.
cleaning or changing spray tips or nozzles, and
Fill the wet-cup (101) one-half full with Graco Throat
Seal
Liquid (TSL).
The pump is tested with No.
10
motor oil, which is
left
Flush
the Pump
in to protect the pump parts.
If
the fluid you are using
patible solvent before using the pump.
may
be
contaminated
by
the oil, flush
it
out with
a
com-
WARNING
For
your
safety,
read the warning section,
FIRE
flushing, and follow
all
the recommendations
OR
EXPLOSION. HAZARD on page
3
before
given there.
Start and Adjust the Pump
Be
sure the air regulator
(H)
is closed. Then open the
bleed
-
type master air valve
(GI.
Hold
a
metal part of the
gun firmly to the side of a grounded metal pail and hold
the trigger open. Now slowly open the air regulator until
the pump starts.
See
the Typical Installation.
the pump and hoses are fully primed. Release the gun
Cycle the pump slowly until
all
the air is pushed out and
trigger and engage the safety latch. The pump will stall
against pressure when the trigger
is
released.
WARNING
Moving parts can pinch or amputate your fingers
or other body parts. When the pump
is
operating,
the priming piston
(Q)
(located at the pump in
-
taka) and the air motor piston (located behind the
air motor plates) move. Therefore, NEVER
operate the pump with the
air
motor plates remov-
ed, and keep your fingers and hands away from
the priming piston.
priming piston
(0)
or service the pump, follow the
Before attempting to clear an obstructon from the
Pressure
Relief
Procedure on page
2
to prevent
the pump from starting accidentally.
I
valve 1139) slightly.
Use
the bleeder hole
(P)
as
a
prim-
If
the pump fails to prime properly, open the bleeder
ing valve until the fluid appears
at
the hole.
See
Fig
2.
Close the bleeder valve.
WARNING
'your hand or fingers to cover the bleeder hole
To reduce the risk of fluid injection,
DO
NOT use
when priming the pump.
With the pump and lines primed, and with adequate air
stop
as
the spray gunldispensing valve is opened and
pressure and volume supplied, the pump will start and
closed.
Fig
2
FWARNING1
fluid pressure. Always use the lowest air pressure
Use
the air regulator to control the pump speed and the
necessary to get the desired results. Higher pressures
cause premature tipinozzle and pump wear.
To reduce
the
risk of overpressurizing your
system, which could result
in
component rupture
and causa serious bodily injury. NEVER exceed
7
bar
(100
psi)
MAXIMUM INCOMING AIR
PRESSURE
to the pump.
Keep the wet-cup
(101)
one
-
half
full
with TSL.
No
adjustment
is
necessary to the packing nut due to the
packing design.
pumped. A dry pump will quickly accelerate to
a
high
Never allow the pump to run dry of the fluid being
which shuts
OH
the
air
supply to the pump
if
the pump
speed, possibly damaging itself. A pump runaway valve,
accelerates beyond the preset speed,
is
available.
See
ACCESSORIES on page 17. If your pump accelerates
quickly, or
is
running too fast, stop
it
immediately and
check the fluid supply. If the supply container
is
empty
tainer and prime the pump and the lines with fluid, or
and air has bean pumped into the lines, refill the con-
flush and leave
it
filled with
a
compatible solvent. Be sure
to eliminate
all
air from the fluid system.
Shutdown and Care
of
the Pump
For overnight shutdown, follow the Pressure
Relief
Pro
-
cedure, above. Always stop the pump
at
the bottom of
the stroke to prevent the fluid from drying on the exposed
displacement rod and damaging the throat packings.
Always flush the pump before the fluid dries on the
displacement rod. Never leave water or water
-
based
fluid in the pump overnight. First, flush with water or a
the pressure, but leave the mineral spirits in the pump to
compatible solvant, then with mineral spirits. Relieve
protect the parts from corrosion.
307-605
5
SERVICE
WARNING
To
reduce
the
risk
of
serious bodily injury, including injection, splashing
in
the eyes, or injury from moving parts,
al
-
ways follow the Pressure Relief Procedure on page
5
when checking or servicing any part of the sprayldispens-
ing
system, when installing, cleaning or changing spray tipslnozzles, and whenever you stop sprayingldfspensing.
TROUBLESHOOTING CHART
PROBLEM
Pump fails to operate
Pump operates but:
-
output
low
on both strokes
-
output low on downstroke
-
output low on upstroke
Erratic or accelerated pump speed
3ck all possible causes and solutic
CAUSE
Restricted line or inadequate air
Insufficient air pressure, closed or
clogged air valves, etc.
Obstructed fluid hose or
gunldispensing valve
Fluid dried on the displacement rod
Dirty or worn air motor parts
Air motor icing
supply
Restricted line or inadequate air
SUPPlY
Insufficient air pressure, closed or
clogged air valves, etc.
Obstructed fluid hose or
gunldispensing valve
Bleeder valve open
Air leaking into supply drum
Fluid too heavy for pump priming
Worn throat packings in displace
-
ment pump
Air motor icing
Fluid too heavy for pump priming
Held open or worn priming piston
Air motor icing
Held open or worn piston valve or
packings
Air motor icing
Exhausted fluid supply
Fluid too heavy for pump priming
Held open or worn piston valve or
packings
Held open or worn priming piston
Worn throat packings in displace
-
ment pump
Air motor icing
before disassembling the pump.
SOLUTION
Clear; see TECHNICAL DATA on
pages
1820
Open, clear
Clear.
Clean;
see
SERVICE
Clean; service (see
307-049)
should have
40DF
dew point
Check air line moisture content;
Clear; see TECHNICAL DATA on
page
18-20
Open, clear
Clear'
Close
Check inductor or ram plate seal
Use bleeder valve; see page
5;
use
inductor or ram unit
Clear; service
should have 40°F dew point
Check air line moisture content;
Use
hleeder valve:
see
page
5:
use
inductor on ram unit
Clear; service
should have 40°F dew point
Check air line moisture content;
Clear; service
should have 40°F dew point
Check
air
line moisture content;
Refill and prime
Use bleeder valve;
see
page
6;
use
inductor or ram
unit
Clear; service
Clear; service
Clear; service
should have 40°F.dew point
Check air line moisture content;
"
Follow
the
Pressure Relief Procedure
on
page
5
and disconnect
the
fluid
line.
If
the
pump
starts again when
the
air is
turned on, the
fluid
hose, etc.,
is
clogged.
6
307.605
I
DISPLACEMENT PUMP SERVICE
-
WARNING
To
reduce the risk of serious bodily injury, in-
cluding injection, splashing in the eyes, or injury
from moving parts, always follow the Pressure
servicing any part of the spray system, when in-
Relief Procedure on page
5
when checking or
stalling, cleaning or changing spray tipslnozzles,
and whenever you stop spraying/dispensing.
I
(See
Fig 3 unless otherwise noted)
1. Flush the pump with compatible solvent if possible.
Follow the Pressure Relief Procedure on page
5.
2.
Disconnect the hoses, !move the pump from its
mounting, and clamp
It
in
a
VISB.
Unscrew
the
coupling nut (9) and the tie rod locknuts (3).
and unscrew the connecting rod (11) from
the
Remove the cotter pin (1). loosen the jam nut
(51,
the displacement pump.
displacement rod
(108).
Pull
the motor away from
NOTE:
If vou are using
a
repair
kit
to service the
pump,
use
all
the new parts even if the old
ones look good. The old parts will not seal
will leak.
See
pages
11.
13 or
15
for the
properly with the new parts, and the pump
repair kit for your pump.
*.
3.
Place the pump housing (109) in a padded jaw vise
4.
Remove the wet
-
cup
(1011.
wet-cup packing
nut
from the pecking nut.
(1361, and packing nut (140). Remove the packings
5.
Push the displacement rod
(108)
down
so
that the
priming piston (119) clears the intake cylinder (117).
6.
Use
two
wrenches to oppositely turn and loosen
the hex nuts (120) on the piston rod
(122).
with the outlet (107) against one jaw.
7. Remove the valve plate (118), velve guide (121),
and the priming piston (119).
8.
Remove the intake cylinder (117).
9. Remove the u
-
cup packing (123) from the intake
cylinder's packing housing (REF 117).
10.
Holding onto the piston rod
(1221,
pull the displace
-
ment rod (108) through the pump housing
(109).
11. Remove the cotter pin and unthread the piston rod
(122) from the displacement rod (108).
12. Remove the piston valve (112). taking care not to
drop the piston
ball
(132).
13. Remove
all
the packings, washers, and spacers
from the piston housing
(110).
14. Inspect the outer surface of the displacement rod
(108)
and the inner surface of the pump cylinder
1111) for scoring and wear. Replace these parts,
if
seal properly and the pump will leak.
If
the cylinder
is
necessary. If the rod is worn, the packings will not
worn, the pump will not stall against pressure.
15.
Clean
all
the parts in a compatible solvent, inspect
them and replace them
as
necessary.
97
4120
TORCIUE
TO
64-61
Nm
160-60
it-lb)
Fig
3
307
-
605
7
16.
Place an O-ring
(125)
on the packing nut
(140).
Screw the packing nut into the pump housing
(109).
NOTE:
Lubricate the parts with
a
lightweight oil
17.
Place the packings, one
at
a
time, into the packing
nut
(140)
in the following order: the u-cup packing
(106)
with the lips of the u
-
cup packing facing down
in the packing nut,
and then two back-up washers
(105).
before assembling.
18.
Loosely install the wet-cup packing nut
(1361
and
the wet-cup into the pump housing
(109).
19.
Install the packings on the piston in the following
order, (see Fig
4):
one u
-
cup packing
(1271
with the
lips facing down, one back-up washer
(130).
the
seal spacer
(137).
the other back
-
up washer
(130).
the other u-cup packing
(127)
with the lips facing
up, and the back-up washer
(131).
See
Fig
4.
20.
Install the piston ball
(132)
in the piston valve hous-
ing
(110).
Apply medium grade thread sealant to the
threads of the piston valve
(112).
Screw the piston
valve into the piston valve housing, torquing to
81
-
102
Nm
(60-76
ft-lb). Screw the piston rod
(122)
into the piston valve, aiigning the holes. Insert the
cotter pin
(126).
-
1
30
IDOWN
Fig
4
21.
Place the pump housing
(109)
in the vise. Install
a
the pump cylinder
(1
11)
and slide
it
into the pump
new O-ring
(125)
in the pump housing. Lubricate
housing. Install the other O-ring
(1251.
NOTE:
In the
40:l
ratio pumps, install the pump
cylinder
so
the tapered end faces the bottom
of
the pump.
22.
Install the displacement rod assembly through the
bottom of the pump, guiding
it
carefully through
the throat packings.
23.
Install a new u-cup packing
(123)
in'the intake
cylinder's packing housing (REF
117)
so
the lips of
the
"u"
face up. Install the packing nut
(114)
and
torque to
34
-
47
Nm
(2535
ft-lb). Slide the valve
packing housing assembly, nut first, onto the
piston rod
(1221.
24.
Place
a
new O
-
ring
(124)
around the intake cylinder
(117)
and screw the cylinder into the pump housing
(109).
torquing to
129
-
149
Nm
(94-110
ft-lb).
25.
Thread the nut
(120)
onto the bottom of the piston
rod. Install the valve plate
(118).
valve guide
(121).
priming piston
(119).
and the other nut
(120).
26.
Holding both nuts
(120)
with
a
wrench, torque the
bottom nut to
54
-
81
Nm
(40-60
ft
-
lb).
27.
Tighten the packing nut
(140).
Torque the wet-cup
nut
(1361
to
54
-
81
Nm
(40-60
ft-lb).
28.
Reconnect the displacement pump
(14)
to the air
motor
(15).
Refill the wet-cup
(101).
Reconnect the
ground wire to the'air motor if
it
was disconnected
during service.
Throat Packing Periodic Replacement
'
'CAUTION
ment of the throat packings, in addition to the
reaular oumD oackina redacement,
is
essential.
Agrasive fluids'causethethroat packings to wear
more quickly, and costly damage to the displace
-
ment rod may result from scoring.
mine how freauentlv
YOU
need to change the
Check the throat packings weekly until you deter-
packings to reduce' displacement rod scoring.
Good oackinas should not have any cracks,
I
I
Order two washers (part no.
178-119)
and one pecking
(part no.
178
-
9571.
To
change the throat packings:
1.
Unscrew the coupling nut
(9).
Remove the cotter
pin
(11,
loosen the jam nut
(5)
and unscrew the con-
necting rod
(11).
See
Fig
3.
breaks or wok spots.
I
2.
Remove the wet
-
cup
(101).
Unscrew the packing
nut
(140)
from the cylinder nut
(135).
Unscrew the
wet
-
cup nut
(136)
from the packing nut
(140).
See
Fig
3.
3.
Remove the packings and clean
all
parts. Grease
the new packing and washers. Install the u-cup
packing
(1061
with the lips facing down,
end then
two back
-
up washers
(1051
in the packing nut
(140).
See Fig
3.
4.
Screw the wet
-
cup nut
(1361
into the packing nut
sure the O-ring
(102)
is in place in the wet-cup nut
(140)
and torque
it
to
54-81
Nm
(40
-
60
ft
-
lb).
Be
(136).
then continue reassembling the pump.
See
Fig
3.
i
i
!
!
i
i
I
1,
i
(R.
..
i
8
307-605
PARTS DRAWINGS
AND
PARTS
LISTS
307
-
605
9