
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 minimum.
Note: You can not adjust below
minimum -additional turns counter-
clockwise have no effect.
Each clockwise turn will equal approx-
imately 3seconds. 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 onthe 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 afactory authorized
service center. When submitting equip-
ment to be repaired, be sure to state the
nature of the problem and indicate if a
repair cost estimate is required.
PROBLEMS
CYLINDER PRESSURE GAUGE
DOES NOT REGISTER PRESSURE.
A.
B.
C.
D.
No system pressure to the pump.
No 24 VDC signal at solenoids SV1
and SV2.
Pressure reducing valve set too low.
Increase setting by 1/2 turn to check
operation.
Primary solenoid valve SV1 may be
inoperative.
PUMP PRESSURE BUILDS VERY
SLOWLY OR NOT AT ALL.
A.
B.
C.
D.
E.
No pulsing signal at SV2.
Pressure reducing valve may be set
too low.
Grease viscosity may be too high for
temperature at which pump is oper-
ating.
If pressure is not building at all, sec-
ondary solenoid valve SV2 may be
inoperative.
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 pit-
ted. Replace shovel rod packing.
H. Inspect lubricant supply line for
leaks or breaks.
DISASSEMBLY
Refer to SERVICE PARTS for part num-
bers and location. Bleed all pressure
from hydraulic and grease lines before
disassembling pumps.
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
Disconnect hose assemblies
(241806 and 241963) from upper
portion of the pump.
Remove cylinder adapters and
gaskets (241961 and 241810).
Remove bolts and washers securing
cover to pump (50058 and 48083).
Remove cover and valve assembly
(241799 and 84970).
Using two wrenches, unscrew cou-
pling nut (241805) from pump shaft
end (11329).
Remove four upper bolts (50771)
and lock washers (68186) secur-
ing mounting plate (241803) to the
tie rods (241804).
Remove hydraulic cylinder
(241814) and mounting plate
(241803).
The hydraulic cylinder can be disas-
sembled from mounting plate by re-
moving four bolts (242048) and
lock washers (68186).
Tie rods (241804) can now be
removed from pump outlet body
(40537) by removing four lower
bolts and lock washers (50771 and
68186).
Unscrew pump tube from outlet
body (40537).
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.
M.
N.
O.
Unscrew gland packing nut (12333)
from outlet body and remove all
gland parts.
Remove the priming tube (61275)
from the bushing extension (61273).
Extend plunger rod (11723) out of
bushing extension and unscrew
priming plunger (11724) to allow re-
moval of priming check parts and
plunger rod (11723).
Remove bushing extension (61273)
and unscrew plunger and bushing
assembly (90554) from pump tube.
Unscrew coupling nut (11345) from
plunger adapter (11344) to allow re-
moval of plunger and bushing as-
sembly intact, reducing the chance
of loosing ball stop (57027) and
check ball (66010).
ASSEMBLY
To reassemble, perform DISASSEMBLY
procedures in reverse.
IMPORTANT
To prevent damage to pump gland pack-
ing 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, (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
Model 84990
Model 84616
Hydraulic Operated
Vent Valve
Hydraulic Operated
Vent Valve Assembly
Drum Cover and
Model 84530
Model 244270
Model 84015
Model 69630
83001
Tiedown Assembly
Controller
Cycle Timer
24 VDC Timer
Pressure Switch
Lower Pump Tube
Repair Kit
(5) FORM 402423