Graco Triton 308HP Operation manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2002, Graco Inc. is registered to I.S. EN ISO 9001
309479A
Instructions/Parts List
Triton™308HP
Diaphragm Pump
Part No. 233805, Series A
3:1 Ratio Air-operated Double Diaphragm Pump, with BSPP Fittings
Part No. 233816, Series A
3:1 Ratio Air-operated Double Diaphragm Pump, with NPT Fittings
100 psi (0.7 MPa, 7 bar) Maximum Air Input Pressure
300 psi (2.1 MPa, 21 bar) Maximum Fluid Working Pressure
Read warnings and instructions.
TI2125A
II 2 G

2 309479A
Contents
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Information . . . . . . . . . . . . . . . . . . . . . . 5
Mounting the Pump . . . . . . . . . . . . . . . . . . . . . . . 5
Air Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fluid Suction Line . . . . . . . . . . . . . . . . . . . . . . . . 6
Fluid Outlet Line . . . . . . . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical Installation Drawing . . . . . . . . . . . . . . . . . 7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pressure Relief . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flushing the Pump Before First Use . . . . . . . . . . 9
Starting and Adjusting the Pump . . . . . . . . . . . . 9
Pump Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flushing and Storage . . . . . . . . . . . . . . . . . . . . 10
Tightening Threaded Connections . . . . . . . . . . 10
Preventive Maintenance Schedule . . . . . . . . . . 10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Prepare the Pump for Repair . . . . . . . . . . . . . . . 15
General Repair Notes . . . . . . . . . . . . . . . . . . . . 15
Fault Indications . . . . . . . . . . . . . . . . . . . . . . . . 15
Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Replace the Diaphragms . . . . . . . . . . . . . . . . . . 16
Repair the Air Valve . . . . . . . . . . . . . . . . . . . . . . 18
Repair the Shaft . . . . . . . . . . . . . . . . . . . . . . . . . 20
Replace the Ball Check Valves . . . . . . . . . . . . . 22
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Performance Chart . . . . . . . . . . . . . . . . . . . . . . . . . 27
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 30
Graco Phone Numbers . . . . . . . . . . . . . . . . . . . . . 30
Manual Conventions
Warning Caution
Note
WARNING
A warning alerts you to the possibility of serious injury
or death if you do not follow the instructions.
Symbols, such as fire and explosion (shown above),
alert you to a specific hazard and direct you to read
the indicated hazard warnings (pages 3-4) for detailed
information.
CAUTION
A caution alerts you to the possibility of damage to or
destruction of equipment if you do not follow the
instructions.
A note calls attention to additional helpful informa-
tion.

Warning
309479A 3
WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
• This equipment is for professional use only.
• Read all instruction manuals, tags, and labels before operating the equipment.
• Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
• Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
• Check equipment daily. Repair or replace worn or damaged parts immediately.
• Do not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 26 for the maximum working pressure of this equipment.
• Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Techni-
cal Data section of all equipment manuals. Read the fluid and solvent manufacturer's warnings.
• Do not use hoses to pull equipment.
• Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 82°C (180°F) or below -40°C (-40°F).
• Wear hearing protection when operating this equipment.
• Comply with all applicable local, state, and national fire, electrical, and safety regulations.
PRESSURIZED EQUIPMENT HAZARD
Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin and
cause serious injury.
• Do not point the gun at anyone or at any parts of the body.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief on page 9 whenever you are instructed to relieve pressure; stop spray-
ing; clean, check, or repair the equipment; and install or clean the spray nozzle.
• Tighten all fluid connections before operating the equipment.
• Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.

Warning
4 309479A
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result
in a fire or explosion and serious injury.
• Ground the equipment and the object being sprayed. Refer to Grounding on page 8.
• If there is any static sparking or you feel an electric shock while using this equipment, stop the
equipment immediately. Do not use the equipment until you identify and correct the problem.
• Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being
sprayed.
• Keep the work area free of debris, including solvent, rags, and gasoline.
• Eliminate all ignition sources such as pilot lights, cigarettes, and static arcs from plastic drop cloths.
Do not plug in or unplug power cords or turn lights on or off in the spray area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
• Know the specific hazards of the fluid you are using.
• Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
• Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
• If a diaphragm fails, fluid is exhausted along with the air. When pumping hazardous fluids, place the
pump in an appropriate container to catch the fluid if a diaphragm ruptures.
MOVING PARTS HAZARD
Moving parts, such as the diaphragm shaft, can pinch or amputate your fingers.
• Before servicing the equipment, follow the Pressure Relief on page 9 to prevent the equipment from
starting unexpectedly.
WARNING

Installation
309479A 5
Installation
General Information
•F
IG. 2 is only a guide for installing system compo-
nents and accessories. It is not an actual system
design. Contact your Graco distributor for assis-
tance in designing a system to suit your particular
needs.
• Always use Genuine Graco Parts and Accessories,
available from your Graco distributor. If you supply
your own accessories, be sure they are adequately
sized and pressure-rated for your system.
• Reference numbers and letters in parentheses refer
to the reference numbers in the figures and the
parts list on page 24.
Mounting the Pump
• For ease of operation and service, mount the pump
so the air inlet, fluid inlet, and fluid outlet ports are
easily accessible.
• Mount the pump in a well-ventilated area with suffi-
cient clearance on all sides for operator access and
servicing.
• The pump must be mounted horizontally. Be sure
that the pump is level in all directions and that the
cylinder housing (54) is positioned closest to the
wall or base on which it is mounted. See FIG. 1.
• The pump can be floor mounted or mounted on a
wall using mounting kit 246495.
• Be sure the mounting can support the weight of the
pump, hoses, and accessories as well as the stress
caused during operation. The pump has two mount-
ing holes for 0.35 in. (9 mm) screws. See the
Dimension drawing on page 28.
Wall mount using kit 246495:
1. Use the bracket (150022) as a template to drill 2
0.38 (9.6 mm) diameter holes in the wall.
2. Loosely attach bracket (150022) to the wall with
anchors and screws (9 mm) long enough to prevent
the bracket from vibrating during operation.
3. Remove bracket from the wall and fasten it to the
pump using the 4 screws (116899) and 1 lock
washer (100028) included in the kit.
4. The lock washer must be used in the unpainted hole
to ensure proper grounding of the bracket.
5. Mount the bracket with the pump attached to the
wall and tighten.
FIG. 1
Floor Mount
Hexagonal screw (2
Hexagonal
screw
Compressed air
Fluid
Cylinder
Fluid
Outlet
Wall Mount
Wall
Mount

Installation
6 309479A
Air Line
1. Install the air line accessories as shown in FIG. 2.
Be sure the air line supplying the accessories is
grounded.
a. The fluid pressure can be controlled with either
an air regulator (F) to control the air into the
pump, or with a fluid regulator (H) to control the
fluid out of the pump.
b. Install a bleed-type master air valve (B) close to
the pump. This valve is required in your system
to relieve air trapped between it and the pump
when the valve is closed. Trapped air can cause
the pump to cycle unexpectedly which could
result in serious injury including splashing in the
eyes or on the skin, or injury from moving parts.
Be sure the bleed valve is easily accessible
from the pump, and is located downstream from
the air regulator.
c. Install a second air valve (E) upstream from all
air line accessories to isolate them during
cleaning and repair.
d. Install an air line filter (D) to remove contami-
nates such as dirt, moisture, and oil from the
compressed air supply.
2. The air valve does not require lubrication.
3. Install a grounded, flexible air hose between the
accessories and the pump air inlet. See Technical
Data on page 26 to determine the air inlet size of
your pump. Use a minimum 1/2” (13 mm) ID air
hose.
Fluid Suction Line
•SeeTechnical Data on page 26 to determine the
fluid inlet size of your pump.
• Use conductive hoses (see FIG. 2). Screw the suc-
tion line into the pump inlet snugly. Use a compati-
ble liquid thread sealant on connections to prevent
air from entering the fluid line.
• For maximum suction lift (wet and dry) information,
see Technical Data on page 26.
• Use an agitator to prevent fluid from settling out.
Part number 245081 Agitator Kit (accessory) is
available.
Fluid Outlet Line
1. Use electrically conductive fluid hoses (P). See FIG.
2. Screw the fluid fitting into the pump outlet (N)
snugly. See Technical Data on page 26 to deter-
mine the fluid outlet size of your pump.
2. Install a fluid regulator at the pump fluid outlet to
control fluid pressure, if desired. Install a fluid drain
valve (H) near the fluid outlet.See Air Line step 1a
for an alternative method to control pressure.
3. Install a fluid drain valve (J) near the fluid outlet.
CAUTION
The pump must be suction-fed in order to operate
properly. Pressure feeding the pump will cause bel-
lows seal failure.
WARNING
A fluid drain (J) valve is required in your system to
relieve pressure in the hose if it is plugged. The drain
valve reduces the risk of serious injury, including
splashing in the eyes or on the skin, or contamination
from hazardous fluids when relieving pressure. Install
the valve close to the pump fluid outlet. To use the
valve as a circulation valve, connect a tube (K)
between the valve and pail.
CAUTION
Some systems may require installation of a pressure
relief valve at the pump outlet to prevent overpressur-
ization and rupture of the pump or hose.
Thermal expansion of fluid in the outlet line can cause
overpressurization. This can occur when using long
fluid lines exposed to sunlight or ambient heat, or
when pumping from a cool to a warm area (for exam-
ple, from an underground tank).
Overpressurization can also occur if the pump is
being used to feed fluid to a piston pump and the
intake valve of the piston pump does not close, caus-
ing fluid to back up in the outlet line.

Installation
309479A 7
FIG. 2. Typical Installation
R
B
C
D
E
F
K
A
L
G
S
M
W
Key:
A TRITON 308HP Pump
B Bleed-type master air valve
(required for pump)
C Air supply line
D Air line filter
E Air line shutoff valve
F Pump air regulator
G Gun air regulator (used in
spray system only)
H Fluid pressure regulator
(used in spray system
only)
J Drain/circulation valve
KDraintube
L Suction tube
M Pump fluid inlet
N Pump fluid outlet
P Fluid hose (shown
connected to gun in spray
system)
R Gun air hose (used in
spray system only)
S Spray gun (used in spray
system only)
T Pump air inlet
U Agitator (used in spray
system only)
W Ground wire
W
H
A
M
L
T
K
N
J
H
N
T
P
J
U

Installation
8 309479A
Grounding
Ground all of this equipment:
•Pump: use a ground wire and clamp. See FIG. 3.
Loosen the grounding screw (X). Insert one end of a
12 ga (1.5 mm2) minimum ground wire (Y) under the
clamp and tighten the screw securely. Connect the
other end of the wire to a true earth ground. For a
ground wire and clamp, order Part No. 222011.
•Air and fluid hoses: Use only electrically conductive
hoses.
•Air compressor: Follow manufacturer’s recommen-
dations.
•Fluid supply drum: Follow your local code.
•All solvent pails used when flushing: Follow your
local code. Use only conductive metal pails placed
on a grounded surface. Do not place the pail on a
nonconductive surface, such as paper or cardboard,
which interrupts the grounding continuity.
FIG. 3. Grounding the Pump
WARNING
Before operating the pump, ground the system as
explained below. Read the warnings on page 4.
Y
X

Operation
309479A 9
Operation
Pressure Relief
1. Shut off the air to the pump.
2. Open the dispensing valve, if used.
3. Open the fluid drain valve to relieve all fluid pres-
sure, having a container ready to catch the
drainage.
Flushing the Pump Before
First Use
The pump was tested in water. If water could contami-
nate the fluid you are pumping, flush the pump thor-
oughly with a compatible solvent. Follow the steps under
Starting and Adjusting the Pump.
Starting and Adjusting the
Pump
1. Be sure the pump is properly grounded. Refer to
Grounding on page 8.
2. Check all fittings to be sure they are tight. Be sure to
use a compatible liquid thread sealant on all male
threads. Tighten the fluid inlet and outlet fittings
securely. Re-torque all fasteners before start-up.
3. Place the suction tube (L) in the fluid to be pumped.
4. Place the end of the fluid hose (P), see FIG. 2, into
an appropriate container.
5. Close the fluid drain valve (J).
6. With the pump air regulator (F) closed, open the
bleed-type master air valve (B).
7. If the fluid hose has a dispensing device, hold it
open while continuing with the following step.
8. Slowly open the air regulator (F) until the pump
starts to cycle. Allow the pump to cycle slowly until
all air is pushed out of the lines and the pump is
primed.
If you are flushing, run the pump long enough to thor-
oughly clean the pump and hoses. Close the air regula-
tor. Remove the suction tube (L) from solvent and place
it in the fluid to be pumped.
Pump Shutdown
Short Term Shutdown
For a short term shutdown, relieve the pressure (see
procedure on this page).
Long Term Shutdown
For a long term shutdown, such as several hours or
overnight:
1. Flush the pump thoroughly.
2. Leave compatible solvent in the pump.
3. Relieve the pressure (see procedure on this page).
WARNING
Read the warnings on page 3, and follow the Pressure
Relief procedure below whenever you:
• are instructed to relieve pressure
• stop spraying
• check or service any of the equipment
• install or clean the fluid nozzle.
Operating the pump dry for extended periods or
operating at pressures higher than the recom-
mended maximum input air pressure will reduce
diaphragm life.

Maintenance
10 309479A
Maintenance
Lubrication
Flushing and Storage
Flush the pump often enough to prevent the fluid you
are pumping from curing, drying, or freezing in the pump
and damaging it. Follow the Pressure Relief on page 9
before storing it for any length of time. Use a compatible
solvent
Tightening Threaded
Connections
1. Before each use, check all hoses for wear or dam-
age, and replace as necessary.
2. Check to be sure all threaded connections are tight
and leak-free.
3. Check and re-torque all screws and fasteners at
least every two months.
Preventive Maintenance
Schedule
• Establish a preventive maintenance schedule,
based on the service history of the pump. This is
especially important for prevention of spills or leak-
age due to diaphragm failure.
CAUTION
Lubrication of the pump is not required. Oil is
exhausted through the muffler, which could contami-
nate the fluid supply or other equipment. Excessive
lubrication can also cause the pump to malfunction.

Maintenance
309479A 11

Troubleshooting
12 309479A
Troubleshooting
Relieve the pressure (page 9) before checking or
servicing the equipment.
Check all possible problems and causes before
disassembling the pump.
Problem Cause Solution
Pump cycles at stall or fails to hold
pressure at stall.
Worn check valve balls (26), seats
(31), or ball guides (32).
Replace. See page 22.
Pump will not cycle, or cycles once
and stops.
Stuck or dirty air valve. Disassemble and clean air valve. See
page 18. Use filtered air.
Check valve ball (26) severely worn
and wedged in seat (31).
Replace ball and seat. See page 22.
Check valve ball (26) wedged in seat
(31) due to overpressurization.
Replace. See page 22. Do not
exceed the maximum fluid working
pressure, see page 26.
Clogged fluid dispensing valve. Relieve pressure and clear valve.
Pinched hose line. Check lines.
Pump operates erratically. Clogged suction line. Inspect; clear.
Sticky or leaking check valves. Clean or replace balls (26) and seats
(31). See page 22.
Ruptured diaphragm (9). Replace. See page 16.
Restricted exhaust. Remove restriction.
Air bubbles in fluid. Loose suction line. Tighten.
Ruptured diaphragm (9). Replace. See page 16.
Pump running irregularly. Stroke fre-
quency dropping, coming to stand-
still.
Worn parts. Replace worn parts. Check com-
pressed air supply.
Icing caused by: compressed air too
moist, stroke frequency too high,
local temperature too low.
Remove ice by changing operating
conditions.
Air escapes continually. Damaged air valve cup (15) or seat
(?).
Replace damaged parts. See page
18.
Foreign matter inside pump. Check air filter.
Pump does not start, or pressure
fluctuates.
Worn check valve seats (?). Replace. See page 22.
Inlet strainer blocked, maximum suc-
tion exceeded, hose or seal defec-
tive.
Clean strainer. Replace defective
parts.
Contaminated fluid. Pump installed or
operated incorrectly.
Check fluid supply. Follow installa-
tion and operation instructions in this
manual.

Troubleshooting
309479A 13
FIG. 4
Fluid Inlet
Outlet Ball Check
Diaphragm
Piston
Outlet Ball Check
Fluid Outlet
Inlet Ball Check
Diaphragm
Inlet Ball Check
Shaft

Troubleshooting
14 309479A

Repair
309479A 15
Repair
Prepare the Pump for Repair
1. Flush the pump if possible, page 10.
2. Relieve the pressure, page 9.
3. Disconnect the air and fluid hoses.
4. Remove the pump from its mounting and take it to
the work bench.
General Repair Notes
Fault Indications
During operation, check for indications of worn or dam-
aged parts, such as:
• major pressure fluctuations
• change in the pump’s operating sound
• irregular operation.
Always replace worn or damaged parts immediately to
prevent additional damage.
Tools Required
• 3, 4, and 6 mm allen wrenches
• 12, 19, and 22 mm open end wrenches
• internal snap ring pliers
• o-ring pick
• needlenose pliers
• vise with soft jaws
• A qualified technician should make all repairs.
• Inspect and clean all parts thoroughly before
reassembly.
• Use only genuine Graco replacement parts,
available from your Graco distributor.
• Be careful not to damage sealing surfaces.
• Replace all o-rings removed from the pump.
• Follow all lubrication, torque, and repair notes
in the repair procedures.
• Do not use silicone or silicone-based grease.

Repair
16 309479A
Replace the Diaphragms
Disassembly
1. Prepare the pump for repair of the cylinder-side dia-
phragm.
a. Remove the 6 screws (39) and fluid cover (37)
from the housing side of the pump.
b. Press on the exposed diaphragm (9) to fully
extend the cylinder-side diaphragm.
c. Replace the housing-side cover and tighten the
6 screws.
2. Repair the cylinder-side diaphragm.
a. Remove the 6 screws (38) and fluid cover (37)
from the cylinder side.
b. Remove the ball check seals (29).
c. The exposed diaphragm should be in the fully
extended position (protruding out from the cylin-
der). If it is not, reassemble the cylinder-side
seals and cover and repeat step 1.
d. Grip the cylinder-side diaphragm firmly and
unscrew it from the rod by hand.
e. Install a new diaphragm (9*) firmly, by hand.
3. Prepare the pump for repair of the housing-side dia-
phragm.
a. Press on the cylinder-side diaphragm so that it
protrudes into the cylinder. This will fully extend
the diaphragm on the housing side.
b. Install new ball check seals (29*).
c. Replace the fluid cover and install the 6 screws.
Torque the screws to 12 N•m (110 in-lb).
4. Repair the housing-side diaphragm.
a. Remove the 6 screws and the fluid cover from
the housing side.
b. Remove the ball check seals
c. The exposed diaphragm should be in the fully
extended position (protruding out from the cylin-
der). If it is not, reassemble the cylinder-side
seals and cover and repeat step 3.
d. Grip the housing-side diaphragm firmly and
unscrew it from the rod by hand.
e. Install a new diaphragm (9*) firmly, by hand.
f. Install new ball check seals (29*).
g. Replace the fluid cover and install the 6 screws
(39*). Torque the screws to 12 N•m (110 in-lb).
Spare diaphragms should be stored in a cool, dry place
and be used within 8 months to prevent diaphragm fail-
ure due to material aging.
WARNING
Wear gloves when removing or assembling the dia-
phragms to reduce the risk of cuts.
Diaphragm Repair Kit 246011 is available. Parts
included in the kit are marked, for example (9*).
For the best results, replace both diaphragms.
Always replace the ball check seals (29) when-
ever the fluid covers are removed. These seals
are included in each of the repair kits.
The housing-side cover must be reassembled
tightly enough to prevent the shaft from turning
when the cylinder-side diaphragm is loosened.

Repair
309479A 17
FIG. 5 Replace the Diaphragms
Torque to 12 N•m
(8.8 ft-lb).
1
43◆
29*†‡◆
14
37
54
7
29*†‡◆
29*†‡◆
38
37
29*†‡◆
42
39
Cylinder Side 9*
Housing Side 9*
1
1
ti2129

Repair
18 309479A
Repair the Air Valve
Disassembly
1. Prepare the pump for repair, page 15.
2. Remove the air valve sheet metal cover (36) and felt
dampener (34).
3. Unscrew the cylinder screws (21).
4. Remove the valve cover (20) with the flat gasket
(19†).
5. Use two screwdrivers to lift out the air valve plate
(16†) and replace o-rings (17†◆) and (18†◆).
6. Remove the air valve cup (15†).
7. Remove one retaining clip (14) with pliers DIN
5256C nominal size 12-25 diameter.
8. Screw cylinder screw (21) into the plug (12) and pull
it out. Replace o-ring (13†◆).
9. Repeat steps 8 and 9 for clip and plug on opposite
side.
10. Reach into the housing and press out the carriage
(10).
11. Replace o-rings (11†◆).
Reassembly
1. Assemble in reverse order.
2. Replace all parts with the new ones supplied in kit
245066
Air Valve Repair Kit 245066 is available. Parts
included in the kit are marked, for example (33†).
For the best results, use all parts in the kit.
Lubricate all o-rings when reassembling the
pump.
Orient the new flat gasket (19) on the air valve
plate (16) so that the channels in the plate are
completely covered
The hole in the air valve plate (16) aligns with the
arrow on the housing.
Four profile seals (29) are provided in kit 245066
as in all 308HP kits. These seals need to be
replaced only if the fluid covers are removed.
Align

Repair
309479A 19
FIG. 6 Repair the Air Valve
12
Lubricate.
Torque to 3.1 N•m (28 in-lb)
Align arrow on housing with point on air valve plate.
1
2
3
13†◆14
19†◆
20
21
34
36
44
10
11†◆
14
15†
17†◆
18†◆
16†
14 12
13†◆
11†◆
1
1
1
1
1
1
3
2
ti2130

Repair
20 309479A
Repair the Shaft
Disassembly
1. Remove the diaphragms. See page 16.
2. Disassemble the air valve. See page 18.
3. Remove the housing (54).
• Sleeve clamp (6) is visible inside the air valve cavity.
Spread the sleeve clamp (6) with pliers DIN 5254A,
nominal size 19, and at the same time, slide the
shaft assembly out from the end where housing (54)
was removed.
Reassembly
1. Replace o-rings (2) (2 internal o-ring grooves inside
the diaphragm housing and 1 internal o-ring groove
inside housing (54)).
2. Replace shaft sections (7, 42, 43) in shaft assembly.
3. Insert shaft assembly into diaphragm housing
through the valve carriage, spreading the sleeve
clamp to allow full insertion. Be careful to release
sleeve clamp in the correct location along the shaft
to engage it in all three grooves.
4. Reinstall the housing (54)
5. Replace o-rings on the carriage, air valve plate, and
plugs and reinstall the air valve section. (See page
18.)
6. Replace the diaphragms (page 16).
7. Replace the ball check seals (29) (page 22) and
reinstall the fluid covers.
The valve carriage (5) will remain free inside the
diaphragm housing.