Concentric 4F649 Instructions for use

MODELS 4F649, 4F650 AND 4F651 ARE INTENDED
TO BE USED AS BIROTATIONAL PUMPS ONLY. THE
REMAINING MODELS CAN BE USED AS BIROTATIONAL
PUMPS AND/OR FLUID MOTORS.
Description
Our hydraulic pumps/fluid motors are highly efficient
and specifically designed for bi-directional rotation. They
utilize an external gear fixed displacement design and are
of a durable cast iron construction. They incorporate an
internally lubricated ball bearing on the drive shaft which
will withstand up to 150 lb. side load.
They can be used for direct drive or for belt driven appli-
cations. As hydraulic pumps they are suitable for use in a
wide variety of material handling, agricultural, and con-
struction equipment applications; in addition to machine
tools, robotics, and other types of machinery. As fluid
motors, typical examples of applications are hose reel
drives, index tables, conveyor drives, lawn mowers and
many other applications where rotary motion is required.
Unpacking
Due to cast iron construction, very little damage can
occur during transit. Do not remove the plastic shipping
plugs from the ports until ready for installation. This will
keep dirt or foreign material from entering the system.
Check carton for the following loose components: (1)
pump/fluid motor assembly, (1) 4-bolt mounting gasket,
(4) 5/16-18” UNC x 3/4” mounting bolts with lockwashers,
and (1) square drive key should be taped to drive shaft.
If any of these components are missing or there is any
noticeable damage, please contact the office where item
was purchased.
Specifications
Cast iron hydraulic pump/fluid motor, bi-rotational,
4-bolt 4F17 mounting, 11 tooth gears, 1.50” shaft exten-
sion, 0.50” shaft diameter with 0.125” square x 1” drive
key, 400 PSI shaft seal, side porting with SAE straight
thread ports, internally lubricated ball bearing for side
loads to 150 lbs.
READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE OR MAINTAIN THE PRODUCT
DESCRIBED. PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION. FAILURE
TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND/OR PROPERTY DAMAGE!
RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.
OPERATING INSTRUCTIONS & PARTS MANUAL
HYDRAULIC GEAR PUMPS
MODELS 4F649 THRU 4F659
Concentric P/N 2690098
Revised 02/06/2012
PUMPS
FLUID
MOTORS
XX X XXX X XX X X
N/A N/A N/A XXX X XX X X
649 650 651 652 653 654 655 656 657 658 659
MODEL AB
DIMENSIONS
4F649
4F650
4F651
4F652
4F653
4F654
4F655
4F656
4F657
4F658
4F659
3.16”
3.16”
3.16”
3.16”
3.69”
3.69”
3.69”
3.69”
3.69”
4.20”
4.20”
9/16-18
9/16-18
3/4-16
3/4-16
3/4-16
7/8-14
7/8-14
7/8-14
7/8-14
7/8-14
7/8-14
PUMP/FLUID MOTOR DIMENSIONAL DATA
1.000
Figure 2 - Dimensions
CASE DRAIN
2.812
1.000
2.000
2.000 2.82
1.41
1.41 HYDRAULIC SCHEMATIC
BI-ROTATIONAL
GEAR PUMP
BI-ROTATIONAL
HYDRAULIC
MOTOR
.344 DIA. MTG. HOLD
(4) PLACES
Figure 1
1.500
3.000
3.25
1.38
3.28
2.76
.28
1.00
1/8” SQ. KEY
.500
“B” SAE PORT .125
A1.500
.5000
1.7815
WARNING!

– 2 –
General Safety Information
DISCONNECT POWER AND RELEASE ALL SYSTEM
PRESSURE BEFORE SERVICING THIS EQUIPMENT.
1. Follow all local electrical and safety codes, as well as the
National Electrical Code (NEC) and the Occupational
Safety and Health Act (OSHA).
2. Never exceed the maximum operating speed or pres-
sure.
3. When using AC motors, ground the motor properly by
wiring with a grounded, metal-clad raceway system,
using a separate ground wire connected to bare metal
of the motor frame, or other suitable means.
4. Guard all moving parts.
5. Drain all liquids from the system before servicing.
6. Check hoses and connections for security before each
use.
7. Periodically check the pump/fluid motor and system
components.
8. Provide a means of pressure relief for pumps whose
discharge line can be shut off or obstructed.
9. Wear safety glasses at all times when working with
pumps/fluid motors.
10. Keep work area clean, uncluttered and properly light-
ed; replace all unused tools and equipment.
11. Keep visitors at a safe distance from the work area.
12. Make the workshop child-proof with padlocks, master
switches, and by removing start keys.
13. Do not operate an engine in an enclosed area.
14. Do not spill gasoline on hot engine surfaces.
15. Store gasoline only in an approved container.
16. Keep dirty and oily cleaning rags in a tightly closed
metal container.
17. Check engine oil level before operating the engine.
18. Familiarize yourself with the controls and emergency
shutdown procedures.
19. Never operate the equipment when you are fatigued.
20. All system components pressure ratings should be
greater than maximum system pressure.
21. Guard all moving parts.
22. Replace all guards when servicing is complete.
Assembly
Models 4F649 through 4F659 are packaged fully assem-
bled and require no further assembly.
Installation
MOUNTING PUMP/FLUID MOTOR ASSEMBLY
TO FLEXIBLE COUPLING DRIVE SYSTEMS
1. Assemble the flexible coupling half to the pump/fluid
motor shaft.
Do not force coupling half onto drive shaft; it must
be a slip fit for adjustment and to avoid internal dam-
age.
2. Tighten the setscrew and insert rubber spider in cou-
pling half.
3. Assemble the other coupling half loosely to the
engine/motor shaft.
4. Bolt the pump/fluid motor loosely to the SAE type
four bolt mounting pump adapter as furnished by the
equipment manufacturer.
5. Align the shafts to make sure they are on center with
each other.
6. Tighten the mounting bolts.
7. Mate the coupling halves together, allowing 1/16”
gap between halves.
8. Check the alignment again.
IMPORTANT: THE GAP IN THE COUPLING HALVES
IS TO PREVENT END LOADING OF THE PUMP/
FLUID MOTOR DRIVE.
9. Tighten the setscrew in the mating coupling half.
10. Remove plastic shipping plugs from the inlet and
outlet ports.
11. Squirt clean oil into pump for pre-lubrication and
start-up.
12. Turn shaft coupling slowly to ensure proper shaft
alignment and coupling installation.
13. Connect inlet and outlet lines with an SAE straight
thread fitting and tighten.
Flush all lines and fittings of contamination.
THREADS ARE SAE, NOT NPTF. USING INCORRECT
FITTINGS COULD DAMAGE THE HYDRAULIC
COMPONENT OR CAUSE PERSONAL INJURY.
NOTE: Do not use teflon tape; the O-ring provides the
seal and teflon tape is not required.
14. When using the assembly as a pump keep inlet hose
short and of adequate size to avoid pump cavitation.
NOTE: Cavitation is recognized by excessive noise and
foaming of hydraulic fluid.
Never run assembly without hydraulic oil.
15. At initial start-up, turn the drive shaft several times by
hand to prime.
16. Bleed all air from the system to prevent erratic opera-
tion.
17. After several cycles, check the reservoir oil level and
refill as necessary.
2690098 MODEL 4F649 THRU 4F659
WARNING!
WARNING!
CAUTION
CAUTION
CAUTION

– 3 –
2690098 MODEL 4F649 THRU 4F659
MODEL AB
DIMENSIONS
4F649
4F650
4F651
4F652
4F653
4F654
4F655
4F656
4F657
4F658
4F659
3.16”
3.16”
3.16”
3.16”
3.69”
3.69”
3.69”
3.69”
3.69”
4.20”
4.20”
9/16-18
9/16-18
3/4-16
3/4-16
3/4-16
7/8-14
7/8-14
7/8-14
7/8-14
7/8-14
7/8-14
PUMP/FLUID MOTOR DIMENSIONAL DATA
STOCK
NO.
DISP.
CU.IN./REV.
MAX. PRESSURE
CONT. INTER.
4F652
4F653
4F654
4F655
4F656
4F657
4F658
4F659
0.194
0.258
0.323
0.388
0.453
0.517
0.647
0.711
3000 3500
3000 3500
3000 3500
3000 3300
2750 3025
2500 2750
2000 2200
1800 2000
OUR FLUID MOTOR SPECIFICATIONS
SPEED
RPM
TORQUE
IN-LBS.
SPEED
RPM
TORQUE
IN-LBS.
SPEED
RPM
TORQUE
IN-LBS.
SPEED
RPM
TORQUE
IN-LBS.
500 PSI 1000 PSI 1500 PSI 2000 PSI 2500 PSI 3000 PSI
SPEED
RPM
TORQUE
IN-LBS.
SPEED
RPM
TORQUE
IN-LBS.
837
2027
3218
4409
68
68
68
68
748
1939
3130
4320
81
81
81
81
660
1850
2041
4230
26
26
26
26
1013
2204
3395
4586
12
12
12
12
1102
2293
3483
4674
40
40
40
40
925
2116
3306
4497
54
54
54
54
1437
2332
3227
4123
90
90
90
90
1348
2244
3139
4034
108
108
108
108
1260
2155
3051
3946
34
34
34
34
1613
2509
3404
4299
16
16
16
16
1702
2597
3493
4388
53
53
53
53
1525
2420
3316
4211
72
72
72
72
1076
2507
3937
4652
113
113
113
113
988
2418
3849
4564
136
136
136
136
900
2330
3760
4475
43
43
43
43
1253
2683
4114
4829
20
20
20
20
1341
2772
4202
4917
66
66
66
66
1165
2595
4025
4741
90
90
90
90
1432
2623
3813
4409
136
136
136
136
1344
2534
3725
4320
163
163
163
163
1255
2446
2041
4232
52
52
52
52
1609
2800
3990
4586
24
24
24
24
1697
2880
4079
4674
80
80
80
80
1520
2711
3902
4497
108
108
108
108
1686
2706
3725
4745
159
159
159
159
1597
2617
3637
4657
–
–
–
–
–
–
–
–
60
60
60
60
1862
2882
3902
4922
28
28
28
28
1951
2971
3991
5000
93
93
93
93
1774
2794
3814
4834
126
126
126
126
1880
2774
3667
4561
181
181
181
181
1792
2685
3579
4472
–
–
–
–
–
–
–
–
69
69
69
69
2057
2950
3844
4738
32
32
32
32
2145
3039
3932
4826
106
106
106
106
1968
2862
3756
4649
144
144
144
144
1788
2859
3573
–
–
–
–
–
–
–
–
–
–
–
–
86
86
86
1965
3036
3750
40
40
40
2053
3124
3838
133
133
133
1877
2948
3662
180
180
180
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
95
95
95
2097
3072
3721
44
44
44
2185
3160
3810
146
146
146
2009
2983
3633
–
–
–
4F658 6
9
11
4F659 7
10
12
4F655 3
5
6
8
4F656 4
6
8
10
4F657 5
7
9
11
4F652 1
2
3
4
MODEL
FLOW
RANGE
GPM
4F653 2
3
4
5
4F654 2
4
6
7
INLET PRESSURE
FLUID MOTOR PERFORMANCE DATA

– 4 –
Installation (Continued)
NOTE: Be sure adequate cooling for the hydraulic oil is
provided. Excessive temperatures can cause damage to
oil and/or system components. Cooling of oil is espe-
cially important on systems where continuous operation
is required. Cooling requirements must be based on:
duty cycle, pressure/flow, ambient temperatures, oil and
component maximum temperature specifications, and
reservoir capacity. Systems operating at excessively high
temperatures can be hazardous and may cause property
damage and/or personal injury.
NOTE: When the ambient temperature is below 32°F,
allow the pump to operate unloaded for several minutes
to warm the oil in the reservoir.
Operation
1. At initial start-up, start and stop several times (jog) to
allow the assembly to prime. After lines are full, the
pump may be operated at full speed.
2. Bleed all air from hydraulic system to prevent erratic
operation.
3. Recheck reservoir oil level after a few complete cycles
of the hydraulic system and refill if necessary.
Fluid Motor Operation
1. The reason for the high pressure oil seal and seal
check valves in the fluid motor is to provide bidi-
rectional rotation without adding an independent
drain line from the oil seal chamber. However, if you
plan to operate the fluid motor(s) in series with other
equipment or with “down stream” (outlet) pressure
exceeding 400 PSI, then the case drain port must
be utilized. The case drain feature can be used by
removing the steel 7/16-20 SAE O-ring plug (see
Specification drawing) and plumbing this port back
to “tank” (low pressure line returning to reservoir).
BE SURE TO DISCONNECT POWER AND RELEASE
ALL SYSTEM PRESSURE BEFORE SERVICING THIS
EQUIPMENT.
Maintenance
1. Keep the reservoir filled with hydraulic fluid.
Recommended Hydraulic Fluids: use a good grade of
automatic transmission fluid (ATF).
2. Make frequent inspection of hydraulic fluid and
change if contaminated.
3. To fill the reservoir with clean oil:
Use a clean funnel fitted with a fine mesh wire screen.
Do not use a cloth strainer. Most pump/fluid motor
failure, valve malfunctions, and short unit life can
be traced directly or indirectly to dirt or other for-
eign material (water, chips, lint, etc.) getting into, or
already in, the hydraulic system.
4. Keep the unit clean of dirt and foreign materials.
5. Keep electrical connections clean.
2690098 MODEL 4F649 THRU 4F659
Notes
WARNING!

– 5 –
2690098 MODEL 4F649 THRU 4F659
Pump does not
develop full pressure
1. System relief valve set too low,
or leaking
2. Oil temp is too high
3. Pump is worn out
4. Double acting cylinder piston seals are
cut or worn out
1. Check system relief valve for proper
setting with pressure gauge in outlet
line
2. Let oil cool below 140°F
3. Replace worn parts or pump
4. Replace or repair cylinder
Motor won’t start 1. Loose connection
2. Circuit breaker tripped
3. Voltage drop
4. Seized pump
5. Start up load is higher than motor
torque capability
1. Check wiring
2. Reset circuit breaker
3. Use heavier gauge wire
4. Replace pump
5. Use larger motor or reduce operating
pressure
Will not pump oil
(Motor runs but cylin-
der does not move, or
moves slowly)
1. No oil in reservoir
2. Motor rotating wrong direction
3. Oil level low
4. Suction strainer is clogged
5. Double acting cylinder piston seals are
cut or worn out
6. Reservoir breather is dirty or clogged
7. Bi-rotational check valve leaking
1. Check oil level, refill
2. Change rotation of prime mover
or reverse inlet and outlet hoses
3. Add oil as needed
4. Clean suction strainer
5. Replace or repair cylinder
6. Clean reservoir breather and
reinstall
7. Remove check valve on pressure side.
Clean and reassemble.
Pump motor unit is
noisy
1. Low oil level
2. Air in system
3. Suction strainer or inlet filter is clogged
1. Add oil as needed
2. Bleed air from highest fitting in system
by loosening fitting very slightly and
operating unit until bubbling of air
stops, then tighten
3. Clean suction strainer or inlet filter
Motor operating slow
or stalling
1. Excessive slipping of gears due to over-
heating of oil
2. Excessive wear on the sides of gear
housing due to oil contaminants
1. Check system. Add oil if needed. Oil
cooler may be necessary to keep oil at
normal operating temperatures
2. Check condition of oil and replace if
contaminated
Motor speed is erratic 1. Motor operating below minimum
recommended speed of 750 RPM
2. Air in system
1. Increase minimum operating speed to
750 RPM or more
2. Bleed air from system
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Toubleshooting Chart

– 6 –
2690098 MODEL 4F649 THRU 4F659
Please provide following information:
• Model Number
• Serial Number (if any)
• Part Description and Number
as shown in Parts List
Address parts correspondence to:
Parts Company of America
1657 Shermer Road
Northbrook, IL 60062-5362 U.S.A.
ORDER REPLACEMENT PARTS
BY CALLING TOLL FREE
1-800-323-0620

– 7 –
2690098 MODEL 4F649 THRU 4F659
1
2
3
4
5
6
7
Drive shaft
Drive shaft
Drive shaft
Drive gear key
Drive gear key
Drive gear key
Screw 1/4-20 x 11/2Grade 8
Screw 1/4-20 x 2 Grade
Screw 1/4-20 x 11/2Grade 8
Square key .12 x .12 x 1.00
Shaft seal
Ball bearing
Snap ring
Gasket kit
O-ring (ARP 904-N-90)
Case drain plug (Steel) 7/16-20 SAE
Spacer ring
Snap ring
Spring
Steel plug 1/2-20 SAE
O-ring (ARP 905-N-90)
Nylon ball
Mounting screw 5/16-18 x 3/4 (not shown)
Mounting gasket (not shown)
5/16 Lockwasher (not shown)
Screw 1/4-20 x 2 Grade 8
Screw 1/4-20 x 21/2Grade 8
2
4
1
4
2870009
*2130087
2260064
*2150042
1
2
2
2
2240016
2110056
*2420114
*2120076
1
1
1
1
†2300482
*2120123
2420113
2590001
1
1
1
2
*2250011
*2120093
*2030011
2240013
8
8
8
*2130072
*2130075
*2130075
8
8
8
8
*2130070
*2130072
*2130072
*2130072
8
8
8
8
*2130070
*2130070
*2130070
*2130070
1
1
1
2230080
2230082
2230082
1
1
1
1
2230078
2230078
2230080
2230080
1
1
1
1
2230021
2230021
2250022
2250022
1
1
1
2720323
2720225
2720226
1
1
1
1
2720319
2720320
2720321
2720322
1
1
1
1
2350268
2350268
2350266
2350266
4F653
4F654
4F655
4F656
4F649
4F650
4F651
4F652
4F649
4F650
4F651
4F652
4F657
4F658
4F659
4F657
4F658
4F659
4F649
4F650
4F651
4F652
4F653
4F654
4F655
4F656
4F657
4F658
4F659
4F653
4F654
4F655
4F656
REF
NO. DESCRIPTION PART
NO. QTY.
Replacement Parts List for Models 4F649 thru 4F659
(*) Standard hardware item, available locally.
(†) NOTE: This Gasket Kit contains more gaskets than you will require. Use the same color gasket that was in the pump/
fluid motor assembly, discard remaining gaskets.
() Not shown.
8
9
10
11
12
13
14
15
16


