Manitowoc Grove RT9130E-2 Service And Maintenance Manual page 251

RT9130E-2 SERVICE MANUAL
NOTE: If connectors are too large to go through the center
of the hydraulic swivel, tag each wire on each of the
connectors. Using the appropriate pin removal
tools, remove the pins, with wires still attached, and
mark each wire with the pin socket number in the
connector. Collect the wires and secure into one
bundle. Mark the bundle with the connector
number. For a list of the appropriate pin removal
tools, refer to Connector Troubleshooting, page 3-
7.
6. Secure the connectors and wires from each of the
numbered connectors so the harness can be withdrawn
through the center of the hydraulic swivel.
7. Tag and disconnect the connectors from the receptacles
on the cab bulkhead mounting plate.
8. Remove the nuts and washers, and remove the cover
from the electrical swivel.
9. Loosen the setscrews securing the electrical swivel
mounting tube to the center post on the water swivel.
10. Remove the bolt and nut securing the electrical swivel
case to the bracket on the case of the water swivel.
CAUTION
When withdrawing the wiring harness through the center
of the hydraulic and water swivels, ensure the wires do
not get caught and damaged.
11. Remove the swivel and wiring harness from the crane. If
necessary, remove the spacer bushing from the center
post.
Installation
1. If removed, install the spacer bushing on the center post.
Route the collector core wiring harness through the
center of the hydraulic and water swivels.
NOTE: The boom should be centered directly over the
front of the crane before adjustment is made to the
slew potentiometer.
2. Slide the electrical swivel mounting shaft onto the center
post.
3. Ensure the threaded hole on the bottom of the electrical
swivel base is aligned with the mounting hole in the
bracket on the water swivel case. Install the bolt through
the hole in the bracket and install the nut. Screw the bolt
into the hole in the electrical swivel base until the bolt
head is approximately 0.25 in (6.4 mm) from the bracket.
Tighten the nut against the electrical swivel (Figure 6-6).
Grove
Forward
4. Apply Loctite to the set screws securing the electrical
swivel to the center post and tighten.
5. Install the swivel cover and secure with two nuts and
washers.
6. Connect the wiring harness connectors to the
receptacles on the cab bulkhead mounting plate as
tagged during removal.
7. Plug the connector into the carrier wiring receptacle,
connect the wires as tagged during removal. Install the
ground wire to the connector mounting bracket on the
carrier frame using the bolt and star washers taken off at
removal and refer to Grove Engineering Specification A-
829-100386 for proper electrical termination of grounds.
8. Install the clamp securing the harness to the retainer
plate on the bottom of the hydraulic swivel assembly.
9. Connect the batteries.
It is imperative that the slew potentiometer be adjusted
anytime work is done to the electrical swivel.
10. Activate all systems, cycle all functions, and observe for
proper operation. Adjust the slew potentiometer in
accordance with Slew Potentiometer Adjustment, page
6-22 procedures.
Preventive Maintenance
It is recommended that a normal inspection of the electrical
swivel collector ring and brush assembly be established. An
example of this could be at approximately 100 to 150 engine
operating hours. When this time limit is reached, perform the
following:
Published 11-22-2016, Control # 345-12
SWING SYSTEM
.25
60°
Bracket
CAUTION
Bolt and Shims
6080
FIGURE 6-6
6
6-21