Lincoln industrial A Series User manual

Page
Section - Q5 - 1
21A-30003-A00 Form402956March 2000
Hydraulic Hammer Pump
Model 85426
Series A

Page Number - 2
Hydraulic Hammer Pump
21A-30003-A00 Form 402956
Table of Contents
Page
Safety......................................................................................................2
GeneralDescription...................................................................................2
AppropriateUse.................................................................................2
ProductSpecifications.....................................................................2
PumpOperation..........................................................................................3
InstallingthePump.....................................................................................3
Maintenance andRepair..........................................................................4
PumpDimension.......................................................................................5
RepairPartsList..........................................................................................7
TroubleShooting........................................................................................8
Safety
Read and carefully observe these operating instructions
before unpacking and operating the pump. The pump must
be operated, maintained and repaired exclusively by
persons familiar with the operating instructions. Local
safety regulations regarding installation, operation and
maintenance must be followed.
Operate this pump only after safety instructions and this
service manual are fully understood.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
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. Adequate protection
is recommended to prevent splashing of material onto the
skin or into the eyes.
If any fluid appears to penetrate the skin, get emergency
medical immediately. Do not treat as a simple cut.
Tell attending physician exactly what fluid was injected.
Description
General Description
This unit is a hydraulically operated, single acting, spring
return, positive displacement pump designed to deliver
grease under pressure. The pump is primarily designed to
lubricate bushings of the tool bit in Hydraulic Hammers.
The pump can be used to lubricate bushings and bearings
on grippers and crushers. The pump is designed to be
directly installed on the hammer, gripper or crusher and
connected to the hydraulic power supply of the carrier.
Grease outlet of the pump should be connected by hose to
the point of lubrication.
The pump could be attached to an SSV divider block for
multiple bearing lubrication.
The pump uses grease from standard 14.5 oz. grease
cartridges, eliminating the need for bulk filling equipment.
The pump may be filled from a bulk lubricant container if
desired.
Appropriate Use
This pump is exclusively designed to dispense grease in
Hydraulic Hammer and gripper/crusher applications.
It should be operated only with hydraulic power.
The maximum ratings given should not be exceeded.
Any other use not in accordance with the instructions will
result in loss of claims for warranty and liability.
Product Specification
Pump Ratio 1.3:1
Output per Stroke, 0.018 in3(0.3 cm3)*
Hydraulic Inlet
Pressure (max.) 5,000 psig (345 bar)
Grease Reservoir Vol. 14.5 oz
Max Inlet Back Pressure 200 PSIG (13.8 bar)
Output Pressure (max.) 6500 PSIG (450 bar)
Operating Temperature -10°F to +180°F
(-23°C to +80°C)
Hydraulic Port SAE #4 (7/16-20 UNF)
Pump Outlet SAE #4 (7/16-20 UNF)
Weight (empty) 16.3 lbs. (7.4 kg)
Weight (full) 17.3 lbs. (7.8kg)
* NOTE: Pump output can be increased up to 0.072 in³
(1.2 cm³) by replacing the metering plug (23).

Page Number - 3
Hydraulic Hammer Pump
21A-30003-A00
Form 402956
Pump Operation
The pump operates simultaneously with the hammer.
Usually the carrier (excavator, back hoe or skid steer) has a
foot pedal to operate the hammer. Each time the operator of
the carrier starts the hammer pushing the pedal, the pump
will make one stroke to dispense grease to the point of
lubrication. When operator stops the hammer, to reposition
or to start new work, the hydraulic pressure to the pump must
be vented and the springs (8, 9, and 10) will return the pump
plunger (6) into the initial position for the next lubrication
cycle. For proper pump operation, the inlet hydraulic back
pressure in the connecting hose has to be below 200 psig
(14 bar). As plunger opens the grease inlet port, grease
flows into the cavity due to vacuum in the cavity and the
pressure exerted on the grease by the cartridge follower
spring (see Illustration 1).
Changing Pump Output
Pump is shipped with the metering plug (23) part number
270801, for minimum grease output - 0.018 in³ (0.3 cm³).
The output of the pump can be increased by changing the
metering plug (23):
-P/N 270802 -0.036 in³ (0.6 cm³)
-P/N 270803 -0.048 in³ (0.8 cm³)
-P/N 270804 -0.060 in³ (1.0 cm³)
-P/N 270805 -0.072 in³ (1.2 cm³)
Installing the Pump
The pump should be installed directly on the hammer or
gripper/crusher. Preferable mounting of the pump is
cartridge housing (28) in the upright position, but it may be
mounted in a horizontal position as well. Make sure to
allow sufficient space for cartridge removal to refill and
pump servicing. Mount in area where the pump indicator
cap (18) will be visible to monitor cartridge lubricant level.
1. Use two 1/2 in. (12 mm.) bolts to securely mount the
pump on an even and solid surface of the hammer. If
necessary, fabricate a mounting bracket.
2. Connect hydraulic power supply to the pump inlet (see
Illustration 2). Use appropriate high pressure hose.
3. Fill the pump with grease. (See Filling Pump with
Grease and Air Purging instructions.)
4. Attach the lubricant supply hose to the pump outlet.
5. Prime the supply hose with grease.
6. Connect lubricant supply hose to the lubrication point.
Filling Pump with Grease
Removing Empty Cartridge
1. Pull back on follower handle until the follower rod is fully
extended and latch the follower rod groove into the slot
on the tube cap.
2. Unscrew Grease Cartridge Housing (28) from Pump
Head (11).
3. Carefully release follower handle to eject empty
cartridge from container tube.
Installing Grease Cartridge
1. Visually check follower seal lip direction before loading a
new cartridge. The follower seal lip must be directed
toward the follower handle for cartridge loading. See
Illustration 1. To change direction of the follower seal,
unscrew tube cap from container tube and pull on handle
to remove follower seal from tube. Flip follower seal over
and re-assemble.
2. Pull back on follower handle and latch the follower rod
groove into the slot on the tube cap.
3. Remove the plastic cap from the grease cartridge and
insert cartridge into container tube.
4. Remove the pull tab from grease cartridge and screw
Grease Cartridge Housing (28) into Pump Head (11).
5. Release follower rod from slot. Purge air from pump. See
air purging instructions.
Manual (Bulk) Filling
1. Unscrew Grease Cartridge Housing (28) from Pump
Head (11).
2. The follower seal lip must be directed toward the pump
head when cartridges are not used. To change direction of
follower, unscrew tube cap from container tube and pull
on handle to remove follower from tube. Flip follower seal
over and re-assemble.
3. Pack container tube follower end with grease to eliminate
air pocket.
4. Dip packed end of the container tube about one inch into
bulk container.
5. Slowly pull follower handle back while gradually pushing
container tube deeper into grease.
6. When follower rod is fully extended pull sideways to latch
it into slot in tube cap.
7. Wipe excess grease from outside of container tube.
8. Screw Grease Cartridge Housing (28) into Pump Head
(11).
9. Release follower rod from slot. Purge air from pump. See
air purging instructions.
Air Purging
1. Engage the follower rod with the follower by lightly pulling
up and rotating the follower handle.
2. Push down on follower handle while pressing button on
Vent Valve (12) to force any air pockets out of Pump Head
(11).
3. Wipe excess grease from Vent Valve (12).
Illustration 1
Follower
Handle
Tube Cap Container
Tube
Follower Rod
Follower Seal Lip
(Carriage Position)

Page Number - 4
Hydraulic Hammer Pump
21A-30003-A00 Form 402956
Pump Filling
[Included Lube Fitting no. 5000 must be installed in place
of Vent Valve (12) for pump filling]
1. The follower seal lip must be directed toward the pump
head when cartridges are not used.
2. Engage the follower rod with the follower by lightly pulling
up and rotating the follower handle.
3. Push filler pump socket onto filler nipple.
4. Operate filler pump to fill container tube while watching
follower rod. The container is full when notch on follower
rod becomes visible.
5. Disengage follower rod from follower and push follower
rod into container tube. Air purging is not required unless
the Grease Cartridge Housing (28) was removed from the
Pump Head (11).
Maintenance and Repair
Relieve pressure from the pump and supply lines before
servicing or repairing the pump, to reduce the risk of an injury
from injection, splashing fluid or moving parts.
Always use Lincoln Industrial parts for service and repair.
Disassembly Procedure (See Illustration #4)
Tools Required:
- 11/16 wrench
- 3/4 wrench
- 5/16 hex wrench
1. Remove tension on follower spring in Grease Cartridge
Housing (28) by pulling up on follower handle and
latching notch on follower rod into slot on tube cap.
2. Remove Grease Cartridge Housing (28).
3. Remove grease cartridge.
4. Remove Packing (27) from Pump Head (11).
5. Remove four Socket Head Screws (1).
6. Remove Cylinder Block (2), U-cup (3) and Piston (4).
7. Remove Piston (4) and U-cup (3) from Cylinder Block (2).
8. Remove Plunger (6), O-ring (7), Spring Retainer (5), Spring
(8), Spring (9) and Spring (10) from Pump Head (11).
9. Remove O-ring (7), Spring Retainer (5), Spring (8), Spring
(9), and Spring (10) from Plunger (6).
10. Remove Check Plug (19) and O-ring (20).
11. Remove Check Spring (21) and Check Ball (22) from
Pump Head (11).
12. Remove Vent Valve (12) from Pump Head (11).
13. Remove Bushing (17), Indicator Cap (18), Spring (16),
Washer (15), Indicator Rod (14) and Retaining Ring (13)
from Pump Head (11).
14. Remove Indicator Cap (18) from Indicator Rod (14).
15. Remove Indicator Rod (14) and Retaining Ring (13)
from Bushing (17).
16. Remove Spring (16) from Bushing.
17. Remove Retaining Ring (13) from Indicator Rod (14).
18. Remove Bushing (26) from Pump Head (11).
19. Remove O-Ring (25) from Pump Head (11).
20. When the Pump is disassembled, it is recommended to
replace all seals which are included in the 249970 Seal
Kit.
21. Reverse disassembly instructions to re-assemble pump.

Page Number - 5
Hydraulic Hammer Pump
21A-30003-A00
Form 402956
Illustration 2
3.00
(76)
1.40
(36)
(Fully Extended)
3.00
(76)
14.84
(377)
2 X Ø .560
(14)
.88
(22)
5.63
(143)
8.38
(213)
8.69
(221)
Hydraulic Inlet
SAE 4
Lube Outlet
SAE 4
.50
(13) .56
(14)
1.50
(38)
1.50
(38)
VentValve
or Fill Fitting

Page Number - 6
Hydraulic Hammer Pump
21A-30003-A00 Form 402956
Illustration 3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

Page Number - 7
Hydraulic Hammer Pump
21A-30003-A00
Form 402956
Item Repair
No. Quan. Description Part No.
1 4 Socket Head Screw (3/8-16x4-1/2) 249963
2 1 Cylinder Block 249972
3 1 U-cup (polyurethane) (See Note #1)
4 1 Piston 249973
5 1 Spring Retainer 249962
6 1 Plunger 249974
7 1 O-ring (nitrile) (See Note #1)
8 1 Spring 249966
9 1 Spring 249965
10 1 Spring 249964
11 1 Pump Head 249975
12 1 Vent Valve 243307
13 1 Retaining Ring 68405
14 1 Indicator Rod 249976
15 1 Washer 48358
16 1 Spring 249967
17 1 Bushing 249955
18 1 Indicator Cap 249969
19 1 Outlet Housing 249957
20 1 O-ring (nitrile) (See Note #1)
21 1 Spring 55005
22 1 Check Ball 66030
23 1 Metering Plug (0.3cc) 270801
24 1 O-ring (nitrile) (See Note #1)
25 1 O-ring (nitrile) (See Note #1)
26 1 Bushing 249956
27 1 Packing (neoprene) 249968
28 1 Grease Cartridge Housing 249952
29 1 Fill Fitting 5000
1 Seal Kit 249970
Notes:
1. Included in 249970 Seal Kit
Repair Parts List

Page Number - 8
Hydraulic Hammer Pump
21A-30003-A00 Form 402956
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]
Form 402956
© Copyright 2000
Printed in USA
Web site:
www.lincolnindustrial.com
Condition Possible Cause Corrective Action
Pump does not operate. No hydraulic pressure to pump. Turn on or connect hydraulic supply.
Piston or plunger is
stuck.
Disassemble pump,
inspect for damaged or
worn parts. Replace if
necessary.
Pump does not
dispense grease. Grease cartridge empty. Replace empty grease cartridge.
Follower is stuck. Check cartridge housing for damage.
Troubleshooting