Graco Check-Mate 312375J User manual

With priming piston and Severe Duty®or MaxLife®rod and cylinder.
For professional use only.
Not for use in explosive atmospheres.
See page 3 for model information. See page 42 for maximum working pressure and approvals.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Instructions - Parts
Check-Mate®
Displacement Pumps
ti10720a
L200CS Model
ti10392a ti10396a
L500CM Model
L100CM Model
312375J
EN
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Related Manuals
2312375J
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Component Identification . . . . . . . . . . . . . . . . . . . . 6
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Disassembly and Reassembly of Throat Packings
and Cartridge . . . . . . . . . . . . . . . . . . . . . . . . 7
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
60cc Displacement Pumps . . . . . . . . . . . . . . . . 18
100cc Displacement Pumps . . . . . . . . . . . . . . . 19
200cc and 250cc Displacement Pumps . . . . . . 24
500cc Displacement Pumps . . . . . . . . . . . . . . . 34
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Outlet Housing Mounting Hole Layout . . . . . . . . 40
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 44
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . 44
Related Manuals
Component Manuals in U.S. English:
Manual Description
312376 Check-Mate®Pump Packages
Instruction-Parts
313526 Supply Units Operation
313527 Supply Units Repair-Parts
313528 Tandem Supply Units Operation
313529 Tandem Supply Units Repair-Parts
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Models
312375J 3
Models
Check your displacement pump’s identification plate (ID) for the 6-digit part number
of your displacement pump. Use the following matrix to define the construction of
your displacement pump, based on the six digits. For example, displacement pump
Part No. L250CM represents the displacement pump (L), output volume in cc per
cycle (250), carbon steel construction (C), and MaxLife®coatings, packings, and
enclosed wet cup (M).
To order replacement parts, see Parts section starting on page 18. The digits in the
matrix do not correspond to the Ref. Nos. in the Parts drawings and lists.
ID
ti10622a
L 250 C M
First Digit Second, Third, and Fourth
Digits Fifth Digit Sixth Digit
Displacement Pump Volume
per cycle (cc) Material
Coatings, Packings,
Enclosed Wet Cup
L
(displacement
pump)
60 C Carbon Steel S Severe Duty
100 S Stainless Steel M MaxLife
200
250
500
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Warnings
4312375J
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back
to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where
applicable.
WARNING
SKIN INJECTION HAZARD
High-pressure fluid from gun, 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 gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Do not spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
MOVING PARTS HAZARD
Moving parts can pinch 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 in this manual. Disconnect power or air supply.
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:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.

Warnings
312375J 5
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 forms from distributor or retailer.
• 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.
• 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.
ELECTRIC SHOCK HAZARD
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on sprayer and extension cords.
• Do not expose to rain. Store indoors.
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 MSDS’s 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.
• Always wear impervious gloves when spraying or cleaning equipment.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic
fumes, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
•Gloves
• Hearing protection
WARNING

Component Identification
6312375J
Component Identification
Key:
A Displacement Rod
BWetCup
C Throat Packing Cartridge
D Outlet Housing
E Fluid Outlet
F Pump Bleed Valve
G Pump Cylinder
H Intake Valve Housing
J Intake Cylinder
K Priming Piston Assembly
L Hex Head Bolt (500cc displacement pumps only)
M Wet Cup Sight Glass (MaxLife models only)
N Wet Cup Fill Cap (MaxLife models only)
FIG. 1
A
B
CD
EF
G
H
J
K
ti10720a
ti10392a ti10396a
L200CS and L250CS Models L500CM Model
L060CM and L100CM Models
M
NA
B
C
D
EF
G
H
J
K
A
B
CD
E
F
G
H
J
K
M
N
L

Repair
312375J 7
Repair
Troubleshooting
See Check-Mate Pump Packages manual 312376.
Required Tools
• Torque wrench
• Bench vise, with soft jaws
• Rubber mallet
•Hammer
• 400 mm (15.8 in.) adjustable wrench
• O-ring pick
• Flat head screwdriver
• 13 mm (1/2 in.) dia. brass rod
• Set of socket wrenches
• Set of adjustable wrenches
• Packing nut wrench (supplied with
pump package)
• 24 in. (610 mm) adjustable wrench
• M4 hex key wrench
• Thread lubricant
• Thread sealant
•Loctite
®2760™or equivalent
Disassembly and Reassembly of
Throat Packings and Cartridge
All new Check-Mate displacement pumps are equipped
with a throat packing cartridge (3) that enables easy
removal and replacement of throat packings without the
complete disassembly of the displacement pump.
1. Run air motor and displacement pump to bottom of
stroke.
2. Relieve pressure. See Check-Mate Pump Packages
manual 312376 for instructions.
3. Remove air motor coupling assembly from displace-
ment rod. See Check-Mate Pump Packages manual
312376 for instructions.
4. Push air motor piston rod up to top of stroke.
5. Remove wet cup cover (present on enclosed wet
cups only).
6. Place an absorbent cloth in wet cup (9) to absorb
Throat Seal Liquid (TSL).
7. Use packing nut wrench (supplied) to loosen and
remove packing nut/enclosed wet cup (9).
8. Use an adjustable wrench to loosen cartridge (3);
slide it and throat packings (P) up and off displace-
ment rod (1).
9. Replace throat packings (P) according to specific
packing kit into cartridge (3). See Packing Kits in
Parts starting on page 18.
10. Remove and replace o-ring (4).
11. Slide cartridge (3) and throat packings (P) back on
to displacement rod (1). Be careful to not damage
packings.
FIG. 2
FIG. 3
9
ti10623a
P
P
3
4
1
2
ti11118a
(Severe Duty)
(MaxLife)

Repair
8312375J
12. Torque cartridge (3) to specified torque listed in the
following table.
13. Slide packing nut/wet cup (9) over displacement rod
(1) and torque to specified torque listed in the follow-
ing table.
14. Fill wet cup (9) 1/3 full of TSL or compatible solvent.
Disassembly
When disassembling displacement pump, lay out all
removed parts in sequence to ease reassembly. Clean
all parts with a compatible solvent and inspect them for
wear or damage.
1. Relieve pressure. See your Check-Mate Pump
Packages manual 312376 for instructions.
2. Disconnect displacement pump from air motor as
illustrated in your Check-Mate Pump Packages
manual 312376.
3. Place displacement pump in a vise, with jaws on
outlet housing (2).
4. Use packing nut wrench (supplied) to loosen and
remove packing nut/enclosed wet cup (9).
5. On displacement pumps with enclosed wet cups (9),
use an M4 hex wrench to remove the three screws
(14) from wet cup cover (10) and remove cover.
Drain and clean out the wet cup (9). See FIG. 5.
6. On displacement pumps with enclosed wet cups (9),
use o-ring pick to remove o-ring (11), and a flat
head screwdriver to remove snap ring (61), wiper
(15), and seal (16).
Displacement
Pump Torque
60cc and 100cc 90-130 ft-lbs (122-173 N•m)
200cc and 250cc 130-190 ft-lbs (176-258 N•m)
500cc 149-261 ft-lbs (203-355 N•m)
Displacement
Pump Torque
60cc and 100cc 28-44 ft-lbs (38-59 N•m)
200cc and 250cc 95-115 ft-lbs (128-155 N•m)
500cc 95-115 ft-lbs (128-155 N•m)
FIG. 4
The snap ring (61) is applicable only to 60cc and
100cc displacement pumps.
FIG. 5
9
ti10623a
ti10561a
10
61
11
16
14
9
15

Repair
312375J 9
7. Hold flats of the priming piston rod (24) with an
adjustable wrench, and use a second wrench to
unscrew priming piston seat (27) from rod. Slide
priming piston (26) off rod. Inspect surfaces of guide
(25) and piston (26) for scoring, wear, or other dam-
age.
8. Use an adjustable wrench on hex of intake cylinder
(22) to unscrew it from intake valve housing (19).
9. Use an adjustable wrench to unscrew intake valve
housing (19) from cylinder (17) and outlet housing
(2). Pull intake valve housing off cylinder. Intake
check valve assembly (R) should slide down priming
piston rod (24) as you remove housing; if it does not
slide easily, firmly tap on top of housing (19) with a
rubber mallet to loosen.
10. Use a 400 mm adjustable wrench on flats of dis-
placement pump cylinder (17) and unscrew cylinder
from outlet housing (2). Remove o-rings (18).
Inspect inside surface of cylinder for wear, scoring
or other damage by holding it up to light at an angle
or running a finger over the surface.
The guide (25) is applicable only to 100cc and
500cc displacement pumps.
FIG. 6
Steps 8-13 apply to 60cc, 100cc, 200cc, and
250cc displacement pumps only.
FIG. 7
ti10563a
24
25
26
27
ti10562a
19
22
FIG. 8
FIG. 9
17
24
19
R
r_000000_312375_1
ti10565a
ti10601a
18
2
17

Repair
10 312375J
11. Use an o-ring pick to remove seal (21) from intake
valve housing (19). Discard seal; use a new one for
reassembly. See FIG. 10.
12. Pull intake seat (20) out bottom of intake valve hous-
ing (19). Take care not to drop intake valve assem-
bly (R) as it comes free, and set it aside for later.
13. Use a rubber mallet to drive displacement rod (1)
and priming piston rod (24) out of outlet housing (2).
Inspect outer surfaces of rods for damage by run-
ning a finger over the surface.
14. 500cc Displacement Pumps Only: use a socket
wrench to remove six capscrews (45).
15. Tap underside of outlet housing (2) with a rubber
mallet to loosen housing from cylinder (17). Lift out-
let housing off displacement pump and set it aside.
Be careful not to scratch displacement rod (1) while
removing housing. Remove seal (18) from top of cyl-
inder.
16. Lift cylinder (17) up off intake housing (22). Dis-
placement rod (1), piston assembly, intake valve
assembly, and priming piston rod (24) will come with
cylinder.
17. Place cylinder (17) sideways in a vise with soft jaws.
Using a rubber mallet on end of priming piston rod
(24), drive displacement rod (1) and piston assem-
bly out of the top of the cylinder. Continue to pull rod
out of cylinder until priming piston rod (24) comes
free.
18. Remove seal (18) from bottom of cylinder (17). Hold
cylinder up to light at an angle to examine inside
surface for scoring and damage.
If seat (20) is difficult to remove, insert a hammer
and brass rod through the top of housing (19) and
drive seat out.
FIG. 10
FIG. 11
r_000000_312375_2
19
20
21
R
ti10568a
1
2
24
Steps 14-19 apply to 500cc displacement
pumps only.
FIG. 12
45
ti10584a