Graco IronMax V Operating instructions

332252A
EN
Repair
IronMax V Electric Airless Sprayer
For professional use only.
For the application of architectural paints and coatings.
Not approved for use in European explosive atmosphere locations.
Model 278667
3300 psi (22.7 MPa, 227 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
Related Manuals:
310643
308491
309640
ti21122a

2332252A
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . 6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Troubleshooting . . . . . . . . . . . . . . . . . . 9
230V Models: . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Sprayer Shrouds . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Pressure Control Board . . . . . . . . . . . . . . . . . . . . 19
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Pressure Adjust Potentiometer . . . . . . . . . . . . . . 21
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Pressure Control Transducer . . . . . . . . . . . . . . . . 22
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Drive and Bearing Housing . . . . . . . . . . . . . . . . . 23
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Pump Replacement . . . . . . . . . . . . . . . . . . . . . . . . 24
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Motor Replacement . . . . . . . . . . . . . . . . . . . . . . . . 26
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 28

Warnings
332252A 3
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.
WARNINGWARNINGWARNING
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Do not spray flammable or combustible materials near an open flame or sources of ignition such as
cigarettes, motors, and electrical equipment.
• Paint or solvent flowing through the equipment is able to result in static electricity. Static electricity
creates a risk of fire or explosion in the presence of paint or solvent fumes. All parts of the spray sys-
tem, including the pump, hose assembly, spray gun, and objects in and around the spray area shall
be properly grounded to protect against static discharge and sparks. Use Graco conductive or
grounded high-pressure airless paint sprayer hoses.
• Verify that all containers and collection systems are grounded to prevent static discharge. Do not
use pail liners unless they are are antistatic or conductive.
• Connect to a grounded outlet and use grounded extensions cords. Do not use a 3-to-2 adapter.
• Do not use a paint or a solvent containing halogenated hydrocarbons.
• Keep spray area well-ventilated. Keep a good supply of fresh air moving through the area. Keep
pump assembly in a well ventilated area. Do not spray pump assembly.
• Do not smoke in the spray area.
• Do not operate light switches, engines, or similar spark producing products in the spray area.
• Keep area clean and free of paint or solvent containers, rags, and other flammable materials.
• Know the contents of the paints and solvents being sprayed. Read all Material Safety Data Sheets
(MSDS) and container labels provided with the paints and solvents. Follow the paint and solvents
manufacturer’s safety instructions.
• Fire extinguisher equipment shall be present and working.
• Sprayer generates sparks. When flammable liquid is used in or near the sprayer or for flushing or
cleaning, keep sprayer at least 20 feet (6 m) away from explosive vapors.

Warnings
4332252A
SKIN INJECTION HAZARD
High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In the event
that injection occurs, get immediate surgical treatment.
• Do not aim the gun at, or spray any person or animal.
• Keep hands and other body parts away from the discharge. For example, do not try to stop leaks
with any part of the body.
• Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
• Use Graco nozzle tips.
• Use caution when cleaning and changing nozzle tips. In the case where the nozzle tip clogs while
spraying, follow the Pressure Relief Procedure for turning off the unit and relieving the pressure
before removing the nozzle tip to clean.
• Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn
off the unit and follow the Pressure Relief Procedure for turning off the unit.
• Check hoses and parts for signs of damage. Replace any damaged hoses or parts.
• This system is capable of producing 3300 psi (22.7 MPa, 227 bar). Use Graco replacement parts or
accessories that are rated a minimum of 3300 psi (22.7 MPa, 227 bar).
• Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.
• Verify that all connections are secure before operating the unit.
• Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar with the controls.
ELECTRIC SHOCK HAZARD
This equipment must be grounded.Improper grounding, setup, or usage of the system can cause elec-
tric shock.
• Turn off and disconnect power cord before servicing equipment.
• Connect only to grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on power and extension cords.
• Do not expose to rain. Store indoors.
• Wait five minutes after disconnecting power cord before servicing large capacitor units.
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical
reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or prop-
erty damage.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents.
• Many other fluids may contain chemicals that can react with aluminum. Contact your material sup-
plier for compatibility.
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.
WARNINGWARNINGWARNING
WARNING

Warnings
332252A 5
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.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDSs to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
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
component. 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.
WARNINGWARNINGWARNING
WARNING

Pressure Relief Procedure
6332252A
P ressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Turn power OFF. Wait 7 seconds for power
to dissipate.
2. Lock gun trigger safety.
3. Remove guard and SwitchTip.
4. Turn pressure to lowest setting. Trigger gun to
relieve pressure.
5. Put drain tube in pail.
6. Turn prime valve down to DRAIN position.
7. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen tip
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
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 Pro-
cedure when you stop spraying and before cleaning,
checking, or servicing the equipment.
ti13055a
ti13131a
ti2769a
ti21125a
ti2595a
ti13026a

Troubleshooting
332252A 7
Troubleshooting
Mechanical/Fluid Flow
Perform Relieve Pressure Procedure, page 6.
TYPE OF PROBLEM WHAT TO CHECK
If check is OK, go to next check
WHAT TO DO
When check is not OK, refer to this column
Pump output is low Spray tip worn Follow Pressure Relief Procedure on page 6,
then replace tip. See your separate gun or tip
manual.
Spray tip clogged Relieve pressure. Check and clean spray tip.
Paint supply Refill and reprime pump.
Intake strainer clogged Remove and clean, then reinstall
Intake valve ball and piston ball are
not seating properly
Remove intake valve and clean. Check balls
and seats for nicks; replace if necessary; see
pump manual. Strain paint before using to
remove particles that could clog pump.
Fluid filter, tip filter, or tip is clogged
or dirty.
Clean filter; see operation manual.
Prime valve leaking Relieve pressure. Repair prime valve.
Verify pump does not continue to
stroke when gun trigger is released.
(Prime valve not leaking.)
Service pump; see pump manual.
Leaking around throat packing nut
which may indicate worn or damaged
packings.
Replace packings; see pump manual. Also
check piston valve seat for hardened paint or
nicks and replace if necessary. Tighten pack-
ing nut/wet-cup.
Pump rod damage Repair pump. See pump manual.
Pump output is low Low stall pressure Turn pressure knob fully clockwise. Make sure
pressure control knob is properly installed to
allow full clockwise position. If problem per-
sists, replace pressure transducer.
Piston packings are worn or dam-
aged
Replace packings; see pump manual.
O-ring in pump is worn or damaged Replace o-ring; see pump manual.
Intake valve ball is packed with mate-
rial
Clean intake valve; see pump manual.
Pressure setting is too low Increase pressure; see pump manual.
Large pressure drop in hose with
heavy materials
Use larger diameter hose and/or reduce overall
length of hose.

Troubleshooting
8332252A
Motor runs but pump does
not stroke
Displacement pump pin damaged or
missing; see pump manual.
Replace pump pin if missing. Be sure retainer
spring is fully in groove all around connecting
rod; see pump manual.
Connecting rod assembly damaged;
see pump manual.
Replace connecting rod assembly; see pump
manual.
Gears or drive housing damaged,
page 23.
Inspect drive housing assembly and gears for
damage and replace if necessary; see pump
manual.
Excessive paint leakage
into throat packing nut
Throat packing nut is loose Remove throat packing nut spacer. Tighten
throat packing nut just enough to stop leakage.
Throat packings are worn or
damaged
Replace packings; see pump manual.
Displacement rod is worn or
damaged
Replace rod; see pump manual.
Fluid is spitting from gun Air in pump or hose Check and tighten all fluid connections. Cycle
pump as slowly as possible during priming.
Tip is partially clogged Clear tip; see pump manual.
Fluid supply is low or empty Refill fluid supply. Prime pump; see pump man-
ual. Check fluid supply often to prevent running
pump dry.
Pump is difficult to prime Air in pump or hose Check and tighten all fluid connections. Cycle
pump as slowly as possible during priming.
Intake valve is leaking Clean intake valve. Be sure ball seat is not
nicked or worn and that ball seats well. Reas-
semble valve.
Pump packings are worn Replace pump packings; see pump manual.
Paint is too thick Thin the paint according to supplier recommen-
dations.
TYPE OF PROBLEM WHAT TO CHECK
If check is OK, go to next check
WHAT TO DO
When check is not OK, refer to this column

Troubleshooting
332252A 9
Electrical Troubleshooting
Symptom: Sprayer does not run, stops running, or will
not shut off.
Perform Pressure Relief Procedure; page 6. Wait 5
minutes before servicing.
• Plug sprayer into correct voltage, grounded outlet
• Set power switch OFF for 30 seconds and then ON
again (this ensures sprayer is in normal run mode).
• Turn pressure control knob clockwise 1/2 turn
• View digital display
WARNING
If no digital display is available, use control
board status light to troubleshoot prob-
lems: Turn ON/OFF switch OFF, remove
control cover and then turn power back
ON. Observe status light. Blinking LED to-
tal count equals digital error code i.e., two
blinks equals E=02.
Keep clear of electrical and moving parts during trou-
bleshooting procedures. To avoid electrical shock haz-
ards when covers are removed for troubleshooting, wait
5 minutes after unplugging power cord for stored elec-
tricity to dissipate.
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK
Sprayer does not run at all See flow chart, page 15.
Digital display is blank
Control board status light never
lights
Sprayer does not run at all Check transducer or transducer
connections
1. Make sure there is no pressure in the system (see
Pressure Relief Procedure, page
6 ). Check fluid
path for clogs, such as clogged filter.
2. Use airless paint spray hose with no metal braid
1/4 in. x 50 ft minimum. Smaller hose or metal braid
hose may result in high-pressure spikes.
3. Set sprayer to OFF and disconnect power to
sprayer.
4. Check transducer and connections to control board.
5. Disconnect transducer from control board socket.
Check that transducer and control board contacts
are clean and secure.
6. Reconnect transducer to control board socket.
Connect power, set sprayer ON and control knob
1/2 turn clockwise. If sprayer does not run properly,
set sprayer to OFF and go to next step.
7. Install new transducer. Connect power, set sprayer
ON and control knob 1/2 turn clockwise. Replace
control board if sprayer does not run properly.
Digital display shows E=02
Control board status light blinks
2 times repeatedly

Troubleshooting
10 332252A
Sprayer does not run at all Check transducer or transducer
connections (control board is not
detecting a pressure signal).
1. Set sprayer to OFF and disconnect power to
sprayer.
2. Check transducer and connections to control board.
3. Disconnect transducer from control board socket.
Check to see if transducer and control board
contacts are clean and secure.
4. Reconnect transducer to control board socket.
Connect power, set sprayer ON and control knob
to 1/2 turn clockwise. If sprayer does not run,
set sprayer to OFF and go to next step.
5. Connect a confirmed working transducer to control
board socket.
6. Set sprayer ON and control knob to 1/2 turn
clockwise. If sprayer runs, install new transducer.
Replace control board if sprayer does not run.
7. Check transducer resistance with ohmmeter (less
than 9k ohm between red and black wires and 3-6k
ohm between green and yellow wires).
Digital display shows E=03
Control board status light blinks
3 times repeatedly
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK

Troubleshooting
332252A 11
Sprayer does not run at all Control is commanding motor to run
but motor shaft does not rotate.
Possibly locked rotor condition, an
open connection exists between
motor and control, there is a
problem with motor or control board,
or motor amp draw is excessive.
1. Remove pump pin and try to run sprayer. If motor
runs, check for locked or frozen pump. If sprayer
does not run, continue to step 2.
2. Set sprayer to OFF and disconnect power to
sprayer.
3. Disconnect motor connector(s) from control board
socket(s). Check that motor connector and control
board contacts are clean and secure. If contacts
are clean and secure, continue to step 4.
4. Set sprayer to OFF and spin motor fan 1/2 turn.
Restart sprayer. If sprayer runs, replace control
board. If sprayer does not run, continue to step 5.
5. Perform Spin Test: Test at large 4-pin motor field
connector. Set sprayer to OFF and disconnect
power to sprayer. Test motor by placing a jumper
across pins 1 & 2. Rotate motor fan at about 2
revolutions per second. A cogging resistance to
motion should be felt at the fan. The motor should
be replaced if no resistance is felt. Repeat for pin
combinations 1 & 3 and 2 & 3. Pin 4 (the green wire)
is not used in this test. If all spin test is positive,
continue to step 6.
Digital display shows E=05
Control board status light blinks
5 times repeatedly
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK
Green Blue Red Black
Green Blue Red Black
Green Blue Red Black
STEP 1:
STEP 2:
STEP 3:

Troubleshooting
12 332252A
Sprayer does not run at all Control is commanding motor to run
but motor shaft does not rotate.
Possibly locked rotor condition,
an open connection exists between
motor and control, there is a problem
with motor or control board, or
motor amp draw is excessive.
6. Perform Field Short Test: Test at large 4-pin motor
field connector. There should not be continuity from
pin 4, the ground wire, and any of the remaining
3 pins. If motor field connector tests fail,
replace motor.
Digital display shows E=05
Control board status light blinks
5 times repeatedly
Sprayer does not run at all Allow sprayer to cool. If sprayer
runs when cool, correct cause of
overheating. Keep sprayer in cooler
location with good ventilation. Make
sure motor air intake is not blocked.
If sprayer still does not run, follow
Step 1.
NOTE: Motor must be cooled down for the test.
1. Set sprayer to OFF and disconnect power to
sprayer.
2. Disconnect thermal device connector from control
board socket. Make sure contacts are clean and
secure.
3. Check thermal device connector (yellow wires) at
the motor.
4. Measure resistance of the thermal device. If reading
is not correct, replace motor.
Set meter to read kohms. Meter should read the
proper resistance (see table below).
5. If meter reads proper resistance, reconnect thermal
device connector to control board socket. Connect
power, turn sprayer ON and control knob 1/2 turn
clockwise. If sprayer does not run, replace control
board.
Digital display shows E=06
Control board status light blinks
6 times repeatedly
Sprayer does not run at all Check the connections. Control
is not receiving a motor position
sensor signal
1. Set sprayer to OFF and disconnect power to
sprayer.
2. Disconnect motor position sensor connector and
inspect for damage at connections.
3. Reconnect sensor.
4. Turn power ON. If error continues, replace motor.
Digital display shows E=09
Control board status light blinks
9 times repeatedly
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK
-
ti13140a
Resistance Table:
IronMax V 8.2k ohms

Troubleshooting
332252A 13
Sprayer does not run at all Check to see if control board is over
heating.
1. Set sprayer to OFF and disconnect power to
sprayer.
2. Make sure motor air intake is not blocked.
3. Make sure fan has not failed.
4. Make sure control board is properly secured to back
plate and that conductive thermal paste is used on
power components.
5. Replace control board.
6. Replace motor.
Digital display shows E=10
Control board status light blinks
10 times repeatedly
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK

Troubleshooting
14 332252A
Sprayer Will Not Shut Off
1. Perform Pressure Relief Procedure, page 6.
Leave prime valve open and power switch OFF.
2. Remove control box cover so the control board
status light can be viewed if available.
Troubleshooting Procedure
Plumb pressure gauge into paint
hose, plug sprayer in, and turn power
switch ON. Does sprayer reach or
exceed its maximum pressure?
Unplug the transducer from control
board. Does motor stop running?
Bad transducer. Replace and test
with a new one.
Replace the control board.
Mechanical problem: See the proper
fluid pump manual for the sprayer for
further trouble shooting procedures.
NO
NO
YES
YES

Troubleshooting
332252A 15
Sprayer Will Not Run
(See following page for steps)
Remove control box cover. Turn
sprayer ON. Observe control
board status light on control board
(see page 9).
No light
Once Normal operation
Light on
Continuously
Control board
commanding
motor to run
Flashing See Error Code
section for further
troubleshooting
Connect a test
transducer to the
board. Does the
motor run?
Replace
potentiometer.
See Step 3. Is the
proper reading
present through the
thermal switch
wires?
Replace the
ON/OFF switch.
See step 4. Does
the motor run?
See Step 1. Do
you have over 100
AC volts (220 for
230V units)?
See Step 2. Do
you have over
100 AC
(220 for
230 VAC units)?
Repair or
replace
power cord.
If motor is hot, let cool and
retest. If Step 3 still shows
incorrect resistance, replace
motor. The motor has
a defective thermal device.
Replace the
transducer
Replace the
control board.
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO

Troubleshooting
16 332252A
230V Models:
-
100k ohm
+
-
200-240V
STEP 2:
Plug power cord in
and turn switch ON.
Connect probes to
on/off switch. Turn
meter to AC Volts.
-
V
--
200-240V
STEP 1:
Plug power cord in
and turn switch ON.
Connect probes to
on/off switch. Turn
meter to AC Volts.
STEP 3:
Check motor thermal switch.
Unplug yellow wires. Meter should
read according to Resistance
Table on page 12. NOTE: Motor
should be cool during reading.
STEP 4:
Plug power cord
in and turn switch
ON. Disconnect
potentiometer.
Black
Control
Board
Control
Board
Motor
Thermal
Switch Yellow

Troubleshooting
332252A 17
Sprayer Will Not Shut Off
1. Perform Pressure Relief Procedure; page 6.
Leave prime valve open and power switch OFF.
2. Remove control box cover so the control board
status light can be viewed if available.
Troubleshooting Procedure
Plumb pressure gauge into paint
hose, plug sprayer in, and turn power
switch ON. Does sprayer reach or
exceed its maximum pressure?
Unplug the transducer from control
board. Does motor stop running?
Bad transducer. Replace and test
with a new one.
Replace the control board.
Mechanical problem: See the proper
fluid pump manual for the sprayer for
further trouble shooting procedures.
NO
NO
YES
YES

Sprayer Shrouds
18 332252A
Sprayer Shrouds
Removal
1. Perform Relieve Pressure Procedure, page 6.
Wait 5 minutes before servicing. Unplug power
cord.
2. Remove two screws (31) and two screws (13) and
remove rear shroud (58).
3. Remove screws (31) and remove front shroud (51).
Installation
1. Replace front shroud (51) and tighten screws (31) to
4.5 - 5.1 N•m (40 - 45 in-lb).
2. Replace rear shroud (58) and tighten two screws
(13) to 1.6 - 1.9 N•m (14 - 17 in-lb) and two screws
(31) to 4.5 - 5.1 N•m (40 - 45 in-lb).
ti13078a
31
13
58
31
13
ti13079a
51
31
ti13079a
51
31
ti13078a
31
13
58
31
13

Pressure Control Board
332252A 19
Pressure Control Board
Removal
1. Perform Relieve Pressure Procedure, page 6.
Wait 5 minutes before servicing.
2. Remove shroud, page 18.
3. Remove four screws (38) on back cover. Remove
cover.
4. Disconnect all wiring connections (see Wiring
Diagram, page 27).
5. Remove ground screw (26) and wire.
6. Disconnect black and blue leads from pressure con-
trol board to filter board.
7. Remove four screws (39) and control board box
(61).
8. Remove grommet and disconnect wiring harness
and three wiring connectors.
9. Disconnect transducer (86) and remove wiring
grommet.
10. Remove four bolts (38) on frame shelf.
11. Remove motor control board (69).
ti21139a
38
ti21140a
26
ti21138a
39
61
ti13087a
ti13086a
86
ti12999a
ti13083a
38
69

Pressure Control Board
20 332252A
Installation
1. Install pressure control board (69) and tighten four
screws (38). Torque to 7.3 - 9.6 N•m (65 - 85 in-lb).
2. Install wiring grommet and transducer (86).
See Wiring Diagram, page 27.
3. Replace grommet and reconnect wires and place
back in wiring harness.
4. Install control board box (61) and tighten four
screws (39). Torque to 3.4 - 4.0 N•m (30 - 35 in-lb).
5. Install ground wire and tighten screw (26). Recon-
nect all wiring (see Wiring Diagram, page 27).
Torque to 2.5 - 3.2 N•m (22 - 28 in-lb).
6. Replace back cover (68) and tighten four screws
(38). Torque to 3.4 - 4.0 N•m (30 - 35 in-lb).
7. Replace shroud (58) and tighten screws (13) to
1.6 - 1.9 N•m (14 - 17 in-lb) and (31) to
4.5 - 5.1 N•m (40 - 45 in-lb).
ti13083a
38
69
ti12999a ti13086a
ti13087a
ti21138a
39
61
ti21140a
26
ti21139a
68
38
ti13078a
58
31
13