4-18. REPLACEMENT
OF
LOCKING
PIN
CYLINDER
(Figures
4-18 and 4-19)
S.
ELECTRIC SHOCK can kill; MOVING
PARTS can cause serious injury.
•
Do not touch live electrical parts.
•
Keep clear of pinch points.
Turntable operation
is required to retract locking pin
from securing mounting plate position.
1. Turn on turntable input power (energize welding
power source
if it is equipped with a 115 volts ac
receptacle that supplies turntable input power).
2. Open hinged cover on turntable control panel
and momentarily connect a jumper lead to leads
30 and 32 at terminal strip to retract
locking pin
from securing mounting plate position.
3. Close and secure cover on control panel.
4. Shut down input power supply to turntable.
WARNING: ELECTRIC SHOCK can kill.
•
Do not touch live electrical parts.
•
Shut down turntable, welding power source, and
robot control,
and disconnect input power
employing “lockout/tagging procedures” before
inspecting or servicing.
Lockout/tagging procedures consist of removing plug
from receptacle, padlocking line disconnect switch in
open position, removing fuses from fuse box, or shut-
ting off and red-tagging circuit breaker or other discon-
necting device.
MOVING PARTS can cause serious injury.
•
Keep clear of pinch points.
PRESSURIZED
HYDRAULIC FLUID
can cause
serious Injury.
•
Release hydraulic fluid pressure according to Sec-
tion 4-13 before touching any hydraulic com-
ponents.
Hydraulic fluid pressure is present even though elec-
trical power is disconnected.
5.
Release pressurized
fluid from accumulator (see
Section 4-13).
IMPORTANT: When removing cylinder pin guide
bracket from turntable chassis, be sure to retain spacer
bars and shim stock, if applicable, located at rear of
mounting bracket, for reinstalling guide bracket with
proper alignment after cylinder replacement.
6.
Remove the 4 bolts securing the cylinder pin
guide bracket to turntable chassis and lower
guide bracket onto base of turntable.
7.
Mark and disconnect the 2 hydraulic hoses from
cylinder fittings (hose at base of cylinder extends
locking pin and hose at head of cylinder retracts
locking pin).
8.
Remove hydraulic fittings from cylinder.
Figure 4
-
19. Cylinder And Locking Pin Components
9.
Remove the 4 screws
securing cylinder
to
bracket.
10.
Remove cylinder and locking pin
from bracket.
11.
Use a wrench of proper size to hold cylinder rod,
and loosen
jam nut at base of locking pin.
12.
Continue to hold cylinder rod secure, and use a
wrench of proper size to remove pin from rod.
13. Remove jam nut from old cylinder rod, and install
it on rod of replacement cylinder rod.
14.
Install locking pin onto end of replacement
cylinder rod, and be sure cylinder rod is in fully
retracted position.
15.
Install locking pin on end of cylinder rod into pin
guide being sure that cylinder ports are facing
away from
bracket, and secure cylinder to
bracket with the 4 screws removed in Step 9.
16.
Adjust locking pin on threaded rod so that top of
pin is flush with upper seal in pin guide, and
tighten jam nut against base of locking pin.
OM-890 Page 31
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Страница 44: ...Circuit Diagram No A 120 980 Figure 4 26 Hydraulic Circuit Diagram r U n J OM 890 Page 41...
Страница 45: ...July 1988 FORM OM 890 PARTS LIST...
Страница 48: ...5 6 TD 120 289 Figure B Control Panel OM 890 Page 3...
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