Lincoln industrial A Series User manual

Section
Page - C8
- 268
MAY - 98
Copyright 1998
Printed in U.S.A.
One Lincoln Way
St. Louis, Missouri 63120-1578
[phone]
FORM 402821
MODEL NO. 84964
HYDRAULICALLY OPERATED
GREASE PUMP-SERIES "A"
DESCRIPTION
Model 84964 is a hydraulically
operated grease pump designed for
centralized lubrication systems on off-
road equipment which utilize 120VAC
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= .13 Amps @ 120VAC each
RATIO(See Note in Fig. 2) 16:1
INPUTPRESSURE 300-3000 P.S.I.
INPUTFLOW@30CYCLESPERMINUTE 1.0 G.P.M.
MAXIMUMHYDRAULICTEMP. 210° F
OUTPUTPRESSURE 7500P.S.I.MAX.
OUTPUTFLOW@30CYCLESPERMINUTE 11 CU. IN./MIN.
AMBIENTTEMP. -40° TO +135° F
SEALS POLYURETHANEANDNITRILE
FILTRATIONREQUIRED 10 MICRON
Failure to heed the following warnings
including misuse, over pressurizing,
modifying parts, using incompatible
chemicals and fluids, or using worn or
damaged parts, may result in
equipment damage and/or serious
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.

Page2
Form 402821
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.
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.
DO NOT alter or modify any part of the
equipment as this may cause a
malfunction and result in serious
bodily injury.
11 3/16"
(300 MM)
1"DIA.PUMPTUBE
(25 MM)
3/4"
(19 MM) 1-13/16"
(46 MM)
1/4" (6 MM)
NPTFPORTS
15-1/4"
(387 MM)
NOTE: 242207 Pressure Reducing
Valve is factory set @ 300 PSI.
Turn clockwise to increase
pressure.
NOTE: For Centro-matic applications,
connect port to top of Vent Valve
with high pressure 1/4" hose. For
Mod-Lube applications, plug port.
FIGURE (1) GENERAL INFORMATION
BASIC
PUMP DRUM SIZE DIMENSION A
84964 400 lb.
(181 kg) 33-15/16" (862 MM)
3"
(76 MM)

Form 402821 Page 3
5
3500
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.
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 require-
ments.
B. When the controller times out a
120VAC 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.
D. The pressure reducing valve lowers
hydraulic fluid pressure to the
operating range of the hydraulic
pump.
Maximum allowable output pressure of
this pump is 7500 p.s.i. Be sure that all
system equipment and accesories 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.

Page4
Form 402821
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.
F. SV2 receives a pulsing 120VAC
signal, 1 second on and 1 second
off. Solenoid Valve SV2 directs the
hydraulic fluid to the pump at 30
cycles/minute.
G. With the vent valve closed the pump
continues to cycle until maximum
pressure is achieved and the
injectors have metered grease to the
bearings. In most grease systems
this is 2500 p.s.i.
H. When the maximum system
pressure is reached the pressure
switch closes.
I. The closed pressure switch signals
the controller to stop the pumping
cycle.
J. At this time the controller terminates
the signals to SV1 and SV2.
K. As SV2 is deenergized the pump
stops cycling.
L. As SV1 is deenergized the hydraulic
fluid stops flowing to the pressure
reducing valve and the vent valve.
M. As the vent valve is deenergized it
opens and allows the grease
pressure to drop to zero so the
injectors can recharge for their next
output cycle.
N. The system is now at rest, ready for
another lube cycle and the sequence
repeats itself.
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
DOES NOTREGISTERPRESSURE.
A. No system pressure to the pump.
B. No voltage 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
SLOWLYORNOTATALL.
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.
I. If hydraulic vent valve is used, check
for clogged orifice. (Refer to pg 3 &
pg 6)
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!

Form 402821 Page5
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 241963) 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 249268).
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 (11345) from
plunger adapter (11344) 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 replacement of
listed service parts. Special
procedures and tools are required.
Contact Lincoln Technical Service,
One Lincoln Way, St. Louis, MO
63120-1578, [phone] 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
Vent Valve
Model 84990 Hydraulic Operated
Vent Valve Assembly
Model 84616 Drum Cover and
Tiedown Assembly
245530 Viton/Teflon
Packing Kit (For
Pumping Synthetic
Lubricants)
Model 69630 Pressure Switch
83001 Lower Pump Tube
Repair Kit

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Form 402821
30 FT. LBS. (41 NM)
TORQUESPECIFICATIONS
2
3
4
5
6
10 - 15 FT. LBS. (14 - 20 NM)
45 IN. LBS. (5 NM)
80 FT. LBS. (108 NM)
100 FT. LBS. (135 NM)
1
90 FT. LBS. (122 NM)

Form 402821 Page7
SERVICE PARTS
+Included in 83001 Lower Pumptube Repair Kit *For 241814 Hydraulic Cylinder
PART QTY. DESCRIPTION PART QTY. DESCRIPTION
11329 1Piston Bolt 50178 2Bolt
11340 1Pistion Rod 50771 8Bolt
11344 1Plunger adapter 57027 2Ball stop
11345 1Coupling nut 61273 1Bushing extension
11346 1Coupling stud 61285 1Pump tube
11349 1Pistion rod connector +66010 4Ball
+11702 1Check washer 66186 12 Lockwasher
+11721 1Priming check 66220 2Lockwasher
11722 1Check stop 67325 1Elbow
+11723 1Plunger rod 90554 1Plunger and bushing assembly
+11724 1Priming plunger 239719 1Priming tube
+11725 1Priming check seat 241799 1Cover assembly
+11726 1Check seat 241803 1Mounting plate
11761 1Piston rod 241804 4Tie rod
12333 1Gland packing nut 241805 1Coupling nut
14940 1Gland packing spacer 241806 1Hose
15184 1Adapter 241810 2Gasket
+31047 1Check seat gasket 241814 1Hydraulic cylinder
31048 1Connector gasket 241846 1Label
31049 2Bushing gasket 241961 2Adapter
31050 1Gland gasket 241963 1Hose
31054 1Pump tube gasket 242048 4Bolt
34180 1Gland packing (nitrile) 242205 13-way valve
34572 1O-ring (polyurethane) 242207 1Pressure reducing valve
+35073 1Priming check packing (nitrile) 242208 14-way valve
38165 1U-cup packing (polyurethane) 242209 2Solenoid connector
40537 1Outlet body 242211 1Gauge
48083 2Washer 242704 2Nut
48213 1Gland packing washer *247342 1Repair Kit
48268 1Gland packing washer 247384 1Orifice
50558 2Bolt 249268 1Valve assembly
249269 2Solenoid coil

Page8
Form 402821
RETAINTHISINFORMATIONFOR 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.