Lincoln A Series User manual

Section
Page
- C8
-250D
FEB - 01
Copyright 2001
Printed in U.S.A.
FORM 403049
MODEL NO. 84943
HYDRAULICALLY OPERATED
GREASE PUMP-SERIES "A"
DESCRIPTION
Model 84943 is a hydraulically
operated grease pump designed for
centralized lubrication systems on off-
road equipment which utilize 24VDC
power sources.
OWNER/OPERATOR
RESPONSIBILITY
It is the owner/operator responsibility to
properly use and maintain this
equipment.
The instructions and warnings
contained in this manual shall be read
and understood by the owner/operator
prior to operating this equipment.
If an owner/operator does not
understand English, the contents of
this manual shall be explained in the
owner/operator native language to
assure the owner/operator
comprehends.
It is the owner/operator responsibility to
maintain the legibility of all warning
and instruction labels.
The owner/operator shall retain this
manual for future reference to
Important warnings, operating and
maintenance instructions.
SPECIFICATIONS
POWER REQUIREMENTS: SV1&SV2= .6 Amps @ 24VDC each
RATIO(See Note in Fig. 2) 16:1
INPUT PRESSURE 300-3000 P.S.I.
INPUT FLOW @ 30 CYCLES PER MINUTE 1.0 G.P.M.
MAXIMUMHYDRAULICTEMP. 210° F
OUTPUT PRESSURE 7500 P.S.I. MAX.
OUTPUT FLOW @ 30 CYCLES/MIN. 11 CU. IN./MIN.
AMBIENTTEMP. -40° TO +135° F
SEALS POLYURETHANE AND NITRILE
FILTRATIONREQUIRED 10 MICRON
OWNERS MANUAL
Failure to heed the following warnings
including misuse, over pressurizing,
modifying parts, using incompatible
chemicals and fluids, or using worn of
damages parts, may result in
equipment damage and/or serious
personal injury.
 Do not exceed the stated maximum
working pressure of the pump or of
the lowest rated component in your
system.
 Do not alter or modify any part of this
equipment.
 Do not attempt to repair or
Disassemble the equipment while
the system is pressurized.
 Make sure all fluid connections are
securely tightened before using this
equipment.
 Always read and follow the fluid
manufacturers recommendations
regarding fluid compatibility, and the
use of protective clothing and
equipment.
 Check all equipment regularly and
repair or replace worn or damaged
parts immediately.
Americas:
One Lincoln Way
St. Louis, MO 63120-1578
USA
Phone [phone]
Fax [phone]
Europe/Africa:
Heinrich-Hertz-Str 2-8
D-69183 Walldorf
Germany
Phone [phone]
Fax [phone]
Asia/Pacific:
25 Intl Business Park
#01-65 German Centre
Singapore 609916
Phone [phone]
Fax [phone]

Page 2 Form 403049
SAFETY INSTRUCTIONS
This equipment generates very high
grease pressure. Extreme caution
should be used when operating this
equipment as material leaks from
loose or ruptured components can
inject fluid through the skin and into the
body causing serious bodily injury
including possible need for
amputation. Adequate protection is
recommended to prevent splashing of
material onto the skin or into the eyes.
IMPORTANT
If any fluid appears to penetrate the
skin, get emergency medical care
immediately. Do not treat as a simple
cut. Tell attending physician exactly
what fluid was injected.
WARNING! DO NOT alter or modify any
part of the equipment as this may
cause a malfunction and result in
serious bodily injury.
INSPECTION
If overpressurizing of the equipment is
believed to have occurred, contact the
factory authorized warranty and service
center nearest you for inspection of the
pump.
Specialized equipment and knowledge
is required for repair of this pump.
Contact the factory authorized warranty
and service center nearest you for
repair or adjustments other than
maintenance specified in this manual.
Annual inspection by the factory
authorized warranty and service center
nearest you is recommended.
A list of factory authorized warranty and
service centers is available upon
request.
DAMAGED PUMPS
Any pump that appears to be damaged
in any way, is badly worn or operates
abnormally shall be removed from use
until repairs are made. Contact the
factory authorized warranty and service
center nearest you for repairs.
11-3/16"
(284 mm)
7"
(178 mm) 3"
(76 mm)
15-1/4"
(387 mm)
1/4"
NPTF PORTS
1-13/16"
(46 mm)
3/4"
(19 mm)
15-3/4"
(400 mm)
1" (25 mm)
DIA.PUMPTUBE

Form 403049 Page 3
INSTALLATION
See Figures (1) and (2). A typical
installation is shown only as a guide for
selecting and installing system
components. Contact your Lincoln
representative for assistance in
designing a system to suit your specific
need.
Maximum allowable output pressure
of this pump is 7500 p.s.i. Be sure that
all system equipment and
accessories are rated to withstand the
maximum working pressure of this
pump. DO NOT exceed the maximum
working pressure of the lowest rated
component in the system.
Flush the supply lines and hoses with
compatible solvent and blow dry with
air air before connecting them to the
system. This is to purge any
contamination such as dirt, moisture,
or metal shavings that could damage
the pump or system components.
The pump was tested in lightweight oil
which was left in it to protect the pump
from corrosion. Flushing of the pump
before connecting it to the system
might be desired to prevent
contamination of the grease you are
pumping.
SYSTEM OPERATION
This section describes the operation of
the hydraulic pump, the controller and
how they function with other Lincoln
components in the system. See Figure
(2), System Installation Schematic and
Figure (3), Controller Schematic for this
description.
The system operates as follows:
A. With the pump and controller
systems in a rest state a preset
time interval occurs as determined
by the bearings lubrication
requirements.
B. When the controller times out a 24
VDC signal will energize SV1,
forcing it to open.
C.As SV1 opens the resulting
hydraulic fluid pressure closes the
vent valve and flows through the
pressure reducing valve.

Page 4 Form 403049
©
J. As SV1 is deenergized the hydraulic
fluid stops flowing to the pressure
reducing valve.
Controller with pressure switch and
safety valve must be used in the lube
system if cylinder pressure exceeds
220 p.s.i.! Failure to use these
monitoring and safety devices may
result in damage to system
components and personal injury!
E. After the system pressure has been
reduced it passes on to SV2 which
controls the direction of the hydraulic
cylinder which operates the grease
pump.
D.The pressure reducing valve lowers
hydraulic fluid pressure to the
operating range of the hydraulic
pump.
F. The 24 VDC signal is also sent to the
cycle timer located at SV2. The cycle
timer will send a pulsing signal, 1
second on and 1 second off, to SV2.
Solenoid Valve SV2 directs the
hydraulic fluid to the pump at 30
cycles/minute.
G. The pump continues to cycle until
the valve blocks have metered
grease to the bearings.
H. At this time the controller terminates
the signals to SV1 and SV2.
I. As SV2 is deenergized the pump
stops cycling.
K. The system is now at rest, ready for
another lube cycle and the sequence
repeats itself.
WIRING INSTRUCTIONS
Refer to following instructions when
wiring Model 85530, Cycle Timer -
P/N 249605 and Solenoid Valves -
SV1 and SV2. See Figure 3.
Model 85530:
Cut 24 VDC pin on power supply
board.
Connect battery positive voltage at
terminal 1 on Terminal Strip A
(terminal 7 on terminal strip A is
internally connected to terminal 1) and
at terminal 23 on Terminal Strip B.
Connect battery negative voltage at
terminal 2 on Terminal Strip A
(terminal 9 and 12 are internally
connected to terminal 2) and at
terminal 24 on Terminal Strip B.
Cycle Timer, SV1 and SV2:
Replace SV2 coil with Timer & Coil
Assembly (249605).
Connect a wire from Model 85530
Terminal Strip A terminal number 8 to
the brown wire from the cycle timer
and one of the wires coming from
SV1.
Connect a wire from Model 85530
Terminal Strip A terminal number 9 to
the white wire from the cycle timer
and the other wire coming from SV1.
Note: Green wire from cycle timer
not used.
CYCLE TIMER
ADJUSTMENT
Cycle Timer is factory set at 1 second
on and 1 second off for 30 cycles/
minute. If adjustment is necessary
refer to Figure 4 and the following
procedure.
The one adjustment screw adjusts
both the ON time and OFF time
equally. The adjustment range is from
.5 seconds (60 cycles/minute) to 5
seconds (6 cycles/minute).

Form 403049 Page 5
The adjustment screw allows 15 turns
of adjustment over the timing range.
The adjustment screw should be
turned 20 turns counter-clockwise to
insure you are starting at a minimum.
Note: You can not adjust below
minimum - additional turns counter-
clockwise have no effect.
Each clockwise turn will equal approx-
imately .3 seconds. Add the number of
turns clockwise to reach the approx-
imate desired timing. Some additional
adjustment may be necessary depend-
ing on the accuracy needed.
Use the light on the cycle timer to help
in setting the time. The light will turn on
when there is power going to SV2.
TROUBLESHOOTING
If the following procedures do not
correct the problem, contact a factory
authorized service center. When
submitting equipment to be repaired,
be sure to state the nature of the
problem and indicate if a repair cost
estimate is required.
PROBLEMS
CYLINDERPRESSUREGAUGE
DOESNOTREGISTERPRESSURE.
A. No system pressure to the pump.
B. No 24 VDC signal at solenoids SV1
and SV2.
C. Pressure reducing valve set too low.
Increase setting by 1/2 turn to check
operation.
D. Primary solenoid valve SV1 may be
inoperative.
PUMPPRESSUREBUILDSVERY
SLOWLYOR NOT ATALL.
A. No pulsing signal at SV2.
B. Pressure reducing valve may be set
too low.
C. Grease viscosity may be too high for
temperature at which pump is
operating.
D. If pressure is not building at all,
secondary solenoid valve SV2 may
be inoperative.
E. Pump piston ball checks and inlet
checks may have foreign matter
trapped causing leakage. Remove,
inspect and clean if necessary.
F. Inspect sealing surfaces between
upper and lower inlet checks.
Replace if rough or pitted.
G. Replace shovel rod if rough or pitted.
Replace shovel rod packing.
H. Inspect lubricant supply line for
leaks or breaks.
DISASSEMBLY
Refer to SERVICE PARTS for part
numbers and location. Bleed all
pressure from hydraulic and grease
lines before disassembling pumps.
A. Disconnect hose assemblies
(241806 and 271598©) from upper
portion of the pump.
B. Remove cylinder adapters and
gaskets (241961 and 241810).
C. Remove bolts and washers
securing cover to pump (50058 and
48083).
D. Remove cover and valve assembly
(241799 and 84970).
E. Using two wrenches, unscrew
coupling nut (241805) from pump
shaft end (11329).
F. Remove four upper bolts (50771)
and lock washers (68186) securing
mounting plate (241803) to the tie
rods (241804).
G. Remove hydraulic cylinder (241814)
and mounting plate (241803).
H. The hydraulic cylinder can be
disassembled from mounting plate
by removing four bolts (242048) and
lock washers (68186).
I. Tie rods (241804) can now be
removed from pump outlet body
(40537) by removing four lower bolts
and lock washers (50771 and
68186).
J. Unscrew pump tube from outlet body
(40537).
K. Extend pump piston rod (11340) out
of the bottom of outlet body (40537).
Place wrenches on piston end
(11329) and flats of piston rod
(11340) and unscrew piston rod.
Thread the piston rod through the
gland packing to allow removal of the
pump tube.
L. Unscrew gland packing nut (12333)
from outlet body and remove all
gland parts.
M. Remove the priming tube (239719)
from the bushing extension (61273).
N. Extend plunger rod (11723) out of
bushing extension and unscrew
priming plunger (11724) to allow
removal of priming check parts and
plunger rod (11723).
O. Remove bushing extension (61273)
and unscrew plunger and bushing
assembly (90554) from pump tube.
Unscrew coupling nut (12211) from
coupling adapter (12210) to allow
removal of plunger and bushing
assembly intact, reducing the chance
of loosing ball stop (57027) and
check ball (66010).
ASSEMBLY
To reassemble, perform DISASSEM-
BLY procedures in reverse.
IMPORTANT
To prevent damage to pump gland
packing and to help increase packing
life, lube pump piston rod before
assembly. Thread piston rod through
gland packing when assembling pump
REPAIR
Repair is limited to replacememt of
listed service parts. Special procedures
and tools are required. Contact Lincoln
Technical Service, One Lincoln Way,
St. Louis, MO 63120-1578, (314)
679-4200 Ext. 782 for your nearest
authorized service center.
When ordering replacement parts, list:
part number, description, model
number and series letter.
ACCESSORIES
Model 84980 Hydraulic Operated
VentValve
Model 84990 Hydraulic Operated
Vent Valve Assembly
245530 Viton/Teflon
Packing Kit (For
Pumping Synthetic
Lubricants)
Model 85530 Controller
Model 249605 Cycle Timer/
Coil Assembly
Model 84015 24 VDC Timer
Model 69630 Pressure Switch
83001 Lower Pump Tube
Repair Kit
© Indicates change

Page 6 Form 403049
271598©
271599©
IMPORTANT
START FASTENERS BY HAND
TOAVOID STRIPPING THREADS
WHEN REASSEMBLING
(387 mm)
© Indicates change

Form 403049 Page 7
PART QTY. DESCRIPTION PART QTY. DESCRIPTION
11329 1 Piston Bolt 50771 8 Bolt
11340 1 Piston Rod 57027 2 Ball Stop
11349 1 Piston Rod Connector 61273 1 Bushing Extension
11702 1 CheckWasher 61321 1 Pump Tube
11721 1 Priming Check 66010 4 Ball
11722 1 Check Stop 66186 12 Lockwasher
11723 1 Plunger Rod 66220 2 Lockw asher
11724 1 Priming Plunger 67359 1 Plug
11725 1 Priming Check Seat 84970 1 Valve Assembly
11726 1 CheckSeat 90554 1 Plunger and Bushing Assembly
12209 1 Coupling Stud 239719 1 Priming Tube
12210 1 Coupling Adapter 241799 1 Cover Assembly
12211 1 Coupling Nut 241803 1 Mounting Plate
12333 1 Gland Packing Nut 241804 4 Tie Rod
14940 1 Gland Packing Spacer 241805 1 Coupling Nut
15184 1 Adapter 241806 1 Hose
31047 1 Check Seat Gasket 241810 2 Gasket
31048 1 Connector Gasket 241814 1 Hydraulic Cylinder
31049 2 Bushing Gasket 241946 1 Label
31050 1 Gland Gasket 241961 2 Adapter
31054 1 Pump Tube Gasket 242048 4 Bolt
34180 1 Gland Packing (Nitrile) 242205 1 3-w ay Valve
34572 1 O-Ring (Polyurethane) 242206 2 Solenoid Coil
35073 1 Priming Check Packing (Nitrile) 242207 1 Pressure Reducing Valve
38165 1 U-cup Packing (Polyurethane) 242208 1 4-w ay Valve
40537 1 Outlet Body 242209 2 Solenoid Connector
48083 2 Washer 242211 1 Gauge
48213 1 Gland Packing Washer 242704 2 Nut
48268 1 Gland Packing Washer 242816 1 Pump Assembly
50058 2 Bolt *247342 1 Repair Kit
50178 2 Bolt 271598 1 Hose
271599 1 Adapter Elbow
SERVICE PARTS
+ Included in 83001 Lower Pump Tube Repair Kit *For 241814 Hydraulic Cylinder
45 IN. LBS. (5 NM)
TORQUESPECIFICATIONS
30 FT. LBS. (41 NM)
10 - 15 FT. LBS. (14 - 20 NM) 80 FT. LBS. (108 NM)
90 FT. LBS. (122 NM)
100 FT. LBS. (135 NM)
14
6
3
25
LIMITEDWARRANTY
Lincoln Industrial, A Pentair Company, warrants that lubrication equipment, materials dispensing equipment and other related equipment
manufactured by it will be free from defects in material and workmanship during the one (1) year following the date of purchase. If
equipment proves to be defective during this warranty period, it will be repaired or replaced without charge, provided that factory
examination indicated the equipment to be defective. To obtain repair or replacement, it must be shipped, transportation charges prepaid,
with proof of date of purchase to a Lincoln authorized Warranty and Service Center, within the one (1) year following the date of purchase.
This warranty is extended to the original retail purchaser only. This warranty does not apply to equipment damaged from accident, overload,
abuse, misuse, megligence, faulty installation or abrasive or corrosive materials, or to equipment repaired or altered by anyone not authorized
by Lincoln to repair or alter the equipment. This warranty applies only to equipment installed and operated according to the recommendations
of Lincoln or its authorized field personnel. No other express warranty applies to lubrication equipment, materials dispensing equipment, and
other related equipment manufactured by Lincoln.
ANY IMPLIED WARRANTIES applicable to lubrication equipment, materials dispensing equipment, and other related equipment manufactured
byLincoln INCLUDING THEWARRANTIESOFMERCHANTABILITY AND FITNESS FORAPRATICULAR PURPOSE WILL LASTONLYFORONE
(1)YEAR FROM THE DATE OF PURCHASE. SOMESTATES DO NOTALLOW LIMITATIONSON HOW LONGAN IMPLEDWARRANTY LASTS,
SO THE ABOVE LIMIATAION MAY NOT APPLY TO YOU.
In no event shall Lincoln be liable for incidental or consequential damages. The liability of Lincoln on any claim for loss or damage arising out
of the sale, resale, or use of lubrication equipment, materials dispensing equipment, and other related equipment shall in no event exceed the
purchaseprice. SOME STATES DO NOT ALLOWTHEEXCLUSIONORLIMITATION OF INCIDENTAL ORCONSEQUENTIALDAMAGES,SOTHE
ABOVELIMIATAION OR EXCLUSION MAYNOT APPLYTOYOU.
THISWARRANTY GIVES YOU SPECIFIC LEGAL RIGHTSANDYOU MAY ALSO HAVE OTHER RIGHTSWHICH VARYFROM STATETO
STATE.

Page 8 Form 403049
RETAIN THIS INFORMATION FOR FUTURE REFERENCE
When ordering replacement parts, list: Part Number, Description, Model Number and Series Letter.
LINCOLN provides a Distributor Network that stocks equipment and replacement parts.
85530