Graco 218334 User manual

307714E
EN
Instructions
43:1 Bulldog
Hydraulic Supply
Pump
Supplies hydraulic oil to the accumulators in an oil rig blow-out prevention system.
Model 218334, Series A
4300 psi (301 bar, 30.1 MPa) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.

Warnings
2307714E
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
SKIN INJECTION HAZARD
High-pressure fluid from dispensing device, hose leaks, or ruptured components will pierce skin. This
may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not point dispensing device at anyone or at any part of the body.
• Do not put your hand over the fluid outlet.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.
FIRE AND EXPLOSION HAZARD
When flammable fluids are present in the work area, such as gasoline and windshield wiper fluid, be
aware that flammable fumes can ignite or explode. To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Keep work area free of debris, including rags and spilled or open containers of solvent and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Ground all equipment in the work area.
• Use only grounded hoses.
•Stop operation immediately if static sparking occurs or you feel a shock.Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
WARNINGWARNINGWARNING
WARNING

Warnings
307714E 3
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system com-
ponent. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about
your material, request MSDS from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure and disconnect all power sources.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer
WARNINGWARNINGWARNING
WARNING

Typical Installation
4307714E
Typical Installation
A Grounded Air Supply Line
BAirFilter
C Air Line Oiler
D Bleed-Type Master Air Valve
E Air Regulator
FAirInlet
G Fluid Outlet
H Grounded Fluid Line
J Fluid Inlet
K Grounded Fluid Supply Line
L Fluid Reservoir
M Fluid Drain Valve
FIG. 1
A
BC
DEF
GH
M
J
K
L

Installation
307714E 5
Installation
The pump is designed to supply hydraulic oil to the
accumulators in an oil rig blow-out prevention system.
The Typical Installation shown in FIG. 1, page 4 is only a
guide. Contact your Graco representative for assistance
in designing a system to meet your needs.
Mount the pump to suit your type of installation. The
Dimension Drawing on page 18 gives measurements
needed for installing the pump.
Reference numbers and letter in the text refer to the call-
out on the drawings.
Grounding
The following instructions refer to FIG. 2.
To ground the pump:
1. Loosen the grounding lug locknut (N) and washer
(P).
2. Insert one end of a 12 gauge (1.5 mm2) minimum
ground wire (R) into the slot in lug (S) and tighten
the locknut securely.
3. Connect the other end of the wire to a true earth
ground such as a steel building column or water
pipe. Check local code.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.
• Proper hose and plumbing line grounding
continuity is essential to maintaining a grounded
system. Check the electrical resistance of your air
and fluid hoses or plumbing line at least once a
week.
• If you hose does not have a tag on it which
specifies the maximum electrical resistance,
contact the hose supplier or manufacturer for the
maximum resistance limits.
• Use a resistance meter in the appropriate range
for your hose to check the resistance. If the
resistance exceeds the recommended limits,
replace it immediately.
• An ungrounded or poorly grounded hose or
plumbing line can make your system hazardous.
FIG. 2
N
P
S
R

Installation
6307714E
System Accessories
The following instructions refer Typical Installation, FIG.
1, page 4.
Install the following accessories in the order shown in
Typical Installation (FIG. 1) using adapters as necessary.
To ensure maximum pump performance, be sure that
any accessory used is properly sized to meet your sys-
tem requirements.
•A bleed-type master air valve (C) and Fluid Drain
Valve (M) are required in your system to reduce the
risk of serious bodily injury from moving parts, injec-
tion or splashing in the eyes or on the skin when
shutting of the pump. The bleed-type master air
valve relieves air trapped between the air valve and
pump, after the pump is shut off. Trapped air can
cause the pump to cycle unexpectedly, which could
result in serious injury from splashing or moving
parts. Be sure the valve is easily accessible from the
pump and located downstream from the air regula-
tor.
• On the air line (A) install an air regulator (D) near
the pump air inlet (E) to control pump speed and
outlet pressure and an air line oiler (C) down-
stream from the regulator to provide automatic lubri-
cation to the air motor.
• Use an adequately sized air regulator to control
pump speed and fluid pressure.
• Upstream form the oiler, install an air filter (F) to
remove harmful dirt and moisture from the com-
pressed air supply.
Hose and Plumbing Lines
The following instructions refer to Typical Installation,
FIG. 1, page 4.
In this system, fluid and air lines may be either hoses or
hard plumbed. All lines must be grounded (see Ground-
ing, page 5).
•ALL FLUID HOSES MUST HAVE SPRING
GUARDS! The spring guards help protect the hose
from kinks or bends at or close to the coupling which
can result in hose rupture.
• Tighten all fluid connections securely before each
use. High pressure fluid can dislodge a loose cou-
pling or allow high pressure spray to be emitted from
the coupling.
• Never us a damaged hose or plumbing component.
Before each use, check the entire hose or plumbing
line for cuts, leaks, abrasion, bulging cover, damage
or movement of couplings. If any of these conditions
exist, replace the hose or defective components
immediately. DO NOT try to recouple high pressure
hoses or mend it with a tape or any other device. A
repaired hose cannot contain the high pressure
fluid.
Connecting Lines
1. Connect the air supply (A) to the 3/4 npsm(f) air
inlet (F).
2. Connect the fluid supply line (K) to the 1 inch
npt(f) fluid intake (J) and the fluid line (H) to the
3/4 npt(f) fluid outlet (G).
Flush Before Using Equipment
The equipment was tested with lightweight oil, which is
left in the fluid passages to protect parts. To avoid con-
taminating your fluid with oil, flush the equipment with a
compatible solvent before using the equipment.

Operation
307714E 7
Operation
Starting and Adjusting the Pump
1. Open the fluid supply shut off valve and the system
drain valve.
2. Open the bleed-type master air valve (C).
3. Slowly open the air regulator (D) until the pump
starts to cycle - about 40 psi (2.8 bar, 0.28 MPa).
4. Allow pump to cycle slowly until all air is purged
from the lines.
NOTE: The lines are purged when the fluid emitted
from the drain valve is flowing in a steady stream.
5. With the lines purged, close the system drain valve
(M).
NOTE: The pump will stall against pressure.
• With the pump and lines primed and with adequate
air pressure and volume supplied, the pump will
start and stop as supply demands or until the
bleed-type master air valve (C) is shut off.
• If your pump accelerates quickly, or is running too
fast, stop it immediately and check the fluid supply. If
the supply container is empty and air has been
pumped into the lines, prime the pump and lines
with fluid or flush and leave filled with compatible
solvent.
• Be sure to eliminate all air from fluid system to pre-
vent corrosion.
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Shut off air to the pump.
2. Close the bleed-type master air valve.
3. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Keep you
hands away from the end of any drain valve when
opening it.
4. Leave drain valve(s) open until you are ready to
pump again.
5. If you suspect the hose is clogged or plumbing line
is clogged or that pressure has not been fully
relieved after following the steps above, VERY
SLOWLY loosen the hose or line end coupling to
relieve pressure gradually, then loosen completely.
Clear the obstruction.
Never exceed 100 psi (7 bar, 0.7 MPa) air input
pressure to the pump, to reduce the risk of
component rupture which can cause serious bodily
injury, including injection or splashing of fluids in the
eyes or on the skin and to avoid damage to the pump.
NOTICE
Always use the lowest air pressure necessary to give
you the result you want. Higher pressure causes pre-
mature pump wear.
NOTICE
Never allow the pump to run dry of fluid being pumped.
A dry pump will quickly accelerate to a high speed, pos-
sibly damaging itself.
NOTICE
Water or even moist air can cause pump corrosion. To
prevent corrosion, NEVER leave the pump filled with
water or air. After normal flushing, flush the pump again
with water or mineral spirits or oil-based solvent,
relieve pressure (see Pressure Relief Procedure,
below) and leave the mineral spirits in the pump.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop pumping and before
cleaning, checking, or servicing the equipment.

Maintenance and Repair
8307714E
Maintenance and Repair
Throat Packing Nut
1. Relieve pressure following pressure relief proce-
dure (page 7).
2. Check tightness of throat packing nut, weekly. The
nut should be tight enough to prevent leakage - no
tighter.
Locating Air Leaks
Air leaks can generally be detected by listening when
the pump is not running. To locate where the air is leak-
ing:
1. Turn off air supply.
2. Relieve pressure, page 7.
3. Disconnect the air hose.
4. Screw the inlet union (117) out of the manifold (87).
5. Remove the air motor shield (73) and screw the inlet
union (117) back into the manifold (87).
6. Connect the air hose and turn the air on. DO NOT
EXCEED 40 psi (2.8 bar, 0.28 MPa) inbound pres-
sure.
7. Use the checking methods listed in the Air Leak
Check Chart to find where the air is leaking.
Replace parts as necessary.
Air Leak Check Chart
Never operate the pump with the air motor shield
removed. The shield encloses the air valve housing,
which moves during operating and can pinch or
amputate your fingers.
Stroke
Position
Check Points
(FIG. 3)
Checking
Method Cause
Down
A - air manifold By feel Blown air manifold
gasket (91)
B - between
cylinder and base By feel Blown air cylinder
gasket (103)
C - weep hole By feel
Blown base bear-
ings, upper o-ring or
cup seal
Up
D - trip rod
Squirt oil
around bearing
(98)
Worn trip rod pack-
ing (71) or bearing
(98)
E - air director
valves
Squire oil
around air
valves (92)
Worn air valve (92)
or their packings
(93)
Both F - exhaust holes
Hold paper strip
over exhaust
holes
Worn air piston
o-ring (69)
FIG. 3
F
A
D
C
B
E

Maintenance and Repair
307714E 9
Fluid Leaks
If the pump continues to operate when the hydraulic out-
let valve is closed, the packings are worn or the ball
check valves are leaking.
If anything more than a light film of fluid is detected at
the weep hole, the base bearings gasket (100) or both
the gasket and the base bearing (98) need to be
replaced.
Air Motor Service
Stalled Air Motor
A stalled air motor may be caused by icing due to
unusual environmental conditions such as:
• operating at a high cycle rate under hot, high humid-
ity conditions
• long operation under cold, arctic conditions
If a motor stalling is not caused by environment condi-
tions, try filling the air lubricator with non-detergent, SAE
#10 oil to prevent stalling.
To start a stalled motor, either turn off the air and allow
the ice to melt (if stalling is due to icing) or follow this
procedure:
1. Turn off the air supply.
2. Remove the lift ring (74).
3. Push down the air valve housing (102) with a screw
driver. DO NOT use your fingers!
4. Screw the lift ring (74) back on.
5. Turn on the air supply.
Air Motor Disassembly
Reference numbers used in the following instructions
refer to FIG. 4 on page 10.
1. Turn off air supply
2. Relieve pressure, page 7.
3. Disconnect all hoses, tubes, controls, etc. from the
air motor to provide ease in servicing.
4. Remove lift ring (74).
5. Remove the swivel adapter (117). Remove the eight
cap screws (75). Then lift the air motor shield (73)
off the air motor.
6. Remove the air inlet spring cap (107) and the detent
spring retainers (77).
7. Take out the compression springs (78), spring
guides (79), and the plungers (80) . Inspect the
parts for wear or damage and replace them as nec-
essary.
8. Remove the four screws (82) and lock washers (83)
holding the detent housing (81). Lift the housing up,
off the air manifolds (87) while holding the detent
rollers (89) in the housing.
9. Remove the detent rollers (89), axles (90), thrust
washer (96) and dampening pad (97) from the
detent housing (81). Inspect the parts for ware and
damage. If either the roller or axle is worn or dam-
aged, replace both; that are a matched set.
10. Remove the caps crews (85) and lockwashers (86).
11. The air director valves (92) are spring compressed
between the air valve housing (102) and the mani-
fold valve plates (101). CAREFULLY remove both
air manifolds. Check the air director valves (92),
o-rings (93) and springs (94) for wear or damage.
Replace if necessary.
12. Remove the four screws (88) in each manifold plate
(101). Check the manifold plates and seals (42) for
Do not use your fingers to disengage the air valve
housing. Moving parts in the air motor can pinch or
amputate your fingers.
NOTICE
Handle springs carefully. Scratches or nicks will
cause early spring failure.

Maintenance and Repair
10 307714E
wear or damage. Remove the air manifold gaskets
(91). Replace any worn parts.
13. Remove the trip rod nut (106) and the lock washer
(86) from the trip rod (43a). Pull the air valve hous-
ing (102) up off the trip rod.
14. Pull the trip rod and piston assembly (43) up as far
as possible.
15. Grip the trip rod (43a) below the bushing (95) with a
padded pliers, and screw the bushing off the trip
rod.
NOTE: Special care to avoid damaging the plated
surface of the trip rod must be taken. A padded pli-
ers, part number 207579 is available from Graco.
16. Remove the thrust washer (96) and dampening pad
(97) from the air motor cylinder (104).
17. Remove the eight screws (105) and lockwashers
(68) holding the air motor cylinder to the base (46).
18. Carefully pull the air motor cylinder (104) straight
up off the air motor base (46) and trip rod and piston
assembly (43a).
NOTE: Be careful not to tilt the cylinder as this could
damage the smooth inner surface.
19. Check piston o-ring (69) for wear or damage and
replace if necessary. The diameter of the o-ring is
larger than that of the piston. Inspect the cylinder
gasket (103) and replace as necessary.
FIG. 4 Torque Key
1Torque to 25 ft. lbs (34 N.m)
2Torque to 20-25 ft. lbs (27-34 N.m)
FIG. 4
74
75
73
117
77
78
79
80
81
110
52
82
83
84
85 1
86
8742
101 88
89
90
97
96
106 2
86
92 93
94
102
95 96
97
98
100
71
99
107
105 1
68
104
103
69
43
46
44
43a
45
67