Graco Series A Operating instructions

332922D
EN
Repair
Displacement Pump
For professional use only.
3300 psi (22.7 MPa, 227 bar) Maximum Working Pressure
Model 16X414, Series A
UltraMax II and Ultimate MX II 695/795
GMAX II 3900
Model 16X418, Series A
TexSpray Mark IV
Model 16X419, Series A
UltraMax II and Ultimate MX II 1095/1595
GMAX II 5900
Model 16X420, Series A
UltraMax II and Ultimate MX II 1095/1595 IronMan
GMAX 5900 IronMan
Model 16X421, Series A
TexSpray Mark V and 5900 HD
Model 16Y602, Series A
TexSpray Mark VII
Model 16X426, Series A
GMAX II 7900
Model 16X427, Series A
TexSpray Mark X and 7900HD
Model 16Y599, Series A
TexSpray Mark V and IronMan
Model 17N693, Series A
APX 6200 (MaxLife)
Model 17R044, Series A
APX 6200 (Chrome)
Model 17N694, Series A
APX 8200 (MaxLife)
Model 17R042, Series A
APX 8200 (Chrome)
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
ti23273a

2332922D
Table of Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 4
Pump Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . 4
Tools Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Cleaning and Inspecting Parts . . . . . . . . . . . . . . 4
Repair When Pump is Separated From Sprayer . 5
Cross-Section Reference . . . . . . . . . . . . . . . . . 11
Parts - Pump 16X414, 16X418 . . . . . . . . . . . . . . . . 12
Parts - Pump 16X420, 16Y599 . . . . . . . . . . . . . . . . 13
Parts - Pump 16X419, 16X421, 16Y602 . . . . . . . . . 14
Parts - Pump 16X426, 16X427 . . . . . . . . . . . . . . . . 15
Parts - Pump 17N693, 17R044 . . . . . . . . . . . . . . . . 16
Parts - Pump 17N694, 17R042 . . . . . . . . . . . . . . . . 17
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 20

Warnings
332922D 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.
WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• 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.
• 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 man-
ufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and cre-
ate safety hazards.
• Use equipment only for its intended purpose. Call your distributor for information.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents.
• 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 equip-
ment, follow the Pressure Relief Procedure and disconnect all power sources.
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.
• 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.
• Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.

Service
4332922D
Service
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Engage trigger lock.
2. Turn ON/OFF switch to OFF.
3. Unplug power cord.
4. Disengage trigger lock. Hold metal part of gun
against grounded metal pail and trigger gun into pail
to relieve pressure.
5. Engage the trigger lock.
6. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave drain
valve(s) open until you are ready to spray again.
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.
Pump Repair Kits
Tools Needed
•Vise
• 12 in. adjustable, open-end wrench (2)
• Hammer (20 oz maximum)
• Small screwdriver
• Throat Seal Liquid
• Pick or long small screwdriver
Cleaning and Inspecting Parts
Clean and inspect parts. Pay particular attention to the
ball seats in the intake valve and piston, which must
have no nicks or wear, and to the inside of the sleeve
and the outside of the piston rod, which must not be
worn or scratched. Replace worn or damaged parts.
NOTE:
Remove and clean sleeve when repacking 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 Pro-
cedure when you stop spraying and before cleaning,
checking, or servicing the equipment.
Pump Repair Kit
16X414 248212
16X419 248213 (stainless steel check balls)
249189 (ceramic check balls)
16X426 249123 (stainless steel check balls)
17A578 (ceramic check balls)
16X427,
17N694
17A578 (ceramic check balls)
16X418 24V063
16X421 249189
16Y602 24M830
16X420 17K162 (stainless steel check balls)
16Y599 17K475 (ceramic check balls)
17N693 17N703 (ceramic check balls)
17R042 17R119 (ceramic SI-N check balls)
17R044 17R114 (ceramic SI-N check balls)
COMPONENT RUPTURE HAZARD
To reduce the risk of serious injury from pressurized
fluid, never use sharp or pointed tools to remove
sleeve. If the sleeve cannot be removed easily, return
the sleeve and cylinder to a Graco distributor for
removal.

Service
332922D 5
Repair When Pump is Separated
From Sprayer
Disassembling the Pump
1. Remove packing nut (202) and o-ring (228).
2. Unscrew intake valve from cylinder.
3. Disassemble intake valve. Clean and inspect o-ring
(227). NOTE: A pick may be required to remove
o-ring.
4. Tap piston rod out of cylinder with a hammer or flip
over and tap piston rod out against a bench.
ti7566C
ti7569c
233
215
214
212
213
227
ti23115a
NOTE: Spring (233)
only used on 16X426,
16X427, 16Y602,
17N693, 17N694,
17R042, and 17R044.
ti7571c
NOTE: Sleeve may come out
of cylinder with piston rod.

Service
6332922D
5. Remove piston rod from sleeve, or remove sleeve
from cylinder. Mark IV, Mark VII, and APX 6200
models: Remove sleeve spacer (230) from sleeve.
6. Unscrew piston valve from piston rod. Clean and
inspect parts. The piston has a special thread lock-
ing/sealing patch. Do not remove the patch. The
patch allows four disassembly/assembly procedures
before it is necessary to apply thread sealant to the
threads.
7. Remove packings and glands from piston rod.
COMPONENT RUPTURE HAZARD
To reduce the risk of serious injury from pressurized
fluid, never use sharp or pointed tools to remove
sleeve. If the sleeve cannot be removed easily, return
the sleeve and cylinder to a Graco distributor for
removal.
ti7572b
ti7576c
ti3940c
Not
used on
16X414,
16X418

Service
332922D 7
8. Remove throat packings and glands from cylinder.
Discard throat packings and glands.
Assembling the Pump
1. Soak all leather packings in SAE 30W oil for 1 hour
minimum prior to assembly. Stack male gland (204)
on piston rod. Alternately stack UHMWPE (208) and
leather (218) packings (note orientation) on piston
rod. Install female gland (217). Install piston wiper
(216) (note orientation) and backup washer (229) on
piston valve, threads are good for four repackings.
Use thread sealant on piston valve threads after
four repackings.
2. Install ball (206) in piston rod. If thread sealant is
applied to piston valve threads, make sure that none
gets on ball.
3. Tighten piston valve to piston rod as specified:
ti7573c
Not
used on
16X414,
16X418
216
218 208
204
217
210
229
ti7574e
Not
used on
16X414,
16X418
Models Torque
16X414, 16X418 27 ± 3 ft-lb.
(36.1 ± 4.1 N•m)
16X419, 16X420, 16X421,
16Y602, 16Y599,17N693,
17R044
55 ± 3 ft-lb.
(74.6 ± 4.1 N•m)
16X426, 16X427, 17N694,
17R042
100 ± 5 ft-lb.
(136 ± 7 N•m)
206
ti7575c
ti7576c

Service
8332922D
4. Soak all leather packings in SAE 30W oil for one
hour minimum prior to assembly. Place male gland
(204) in cylinder. Alternately stack UHMWPE (203)
and leather packings (223) (note orientation). Place
female gland (224) in top of cylinder seat packings.
5. Install seal (201) into packing nut (202). Install
o-ring (228) onto packing nut. Loosely install pack-
ing nut into cylinder.
6. Grease piston packings.
7. Slide piston assembly into bottom of sleeve.
8. Grease top inch or two of piston rod that will go
through the cylinder throat packings.
203
224
223
204
ti7573g
Not
used on
16X414,
16X418
201
202
228
ti7581b
NOTICE
Do not slide piston assembly into top of sleeve as this
may damage piston packing.
ti7578d
ti7577b
ti7579b

Service
332922D 9
9. Grease o-rings (221) and place on sleeve. Slide
sleeve/piston rod assembly into bottom of cylinder.
Replace o-ring (207) if desired.
NOTE: O-ring (207) is not required for safe pump
operation.
10. Mark IV, Mark VII, and APX6200 models: Install
o-ring (231) on sleeve spacer (230) and install
sleeve spacer on sleeve.
11. Reassemble intake valve with new o-ring (227),
seat (212) and ball (214). Seat may be flipped over
and used on other side. Clean seat thoroughly.
12. Install intake valve on cylinder. If a wrench is used
torque as follows:
221
207
ti7582b
231
230
Models Torque
16X414, 16X418 67 ± 5 ft-lb (90.8 ± 6.8 N•m)
16X419, 16X420,
16X421, 16Y602,
16Y599
80 ± 5 ft-lb (108.5 ± 6.8 N•m)
16X426, 16X427,
17N693, 17N694,
17R041, 17R044
200 ± 15 ft-lb (271.2 ± 20.3 N•m)
233
215
214
212
213
227
ti23115a
NOTE: Spring (233) only
used on 16X426, 16X427,
16Y602, 17N693, 17N694,
17R042, and 17R044.
ti7569d

Service
10 332922D
13. Torque packing nut (202) as follows: 14. Remove o-ring (228) when pump packings begin to
leak after extended use. Then tighten packing nut
down until leakage stops or lessens. This allows
approximately 100 gallons of additional operation
before a repacking is required.
Models Torque
16X414, 16X418, 16X419, 16X420,
16X421, 16Y602, 16Y599, 17N693,
17R044
100 ± 10 in-lb
(11.3 ± 1.1 N•m)
16X426, 16X427, 17N694, 17R042 140 ± 10 in-lb
(15.8 ± 1.1 N•m)
202
228
ti7568b