6-20 Published 11-22-2016, Control # 345-12
SWING SYSTEM RT9130E-2 SERVICE MANUAL
Cleaning and Inspection
1. Clean the spool and case with a suitable solution and
dry with compressed air. Plug all ports with plastic caps.
2. Check the spool and inside of the case for scratches,
grooves, scoring, etc. If any grooves have developed
with a depth of 0.005 in (0.127 mm) the unit should be
replaced.
Assembly
NOTE: Lubricate the interior of the swivel to prevent
rusting from condensation.
1. Lubricate the spool, seals, and rings.
2. Install new seals and rings on the spool.
3. Insert the spool into the barrel.
Installation
1. Install the water swivel on top of the hydraulic swivel
aligning the keyed lug on the water swivel with the lug on
the hydraulic swivel. Secure the water swivel and the
electrical swivel center post with the four bolts and
washers.
2. Install the shim(s) on the keying lug to provide a snug fit
and secure with a bolt.
3. Connect the lines to the swivel case as tagged during
removal.
4. Install the electrical swivel. Refer to Electrical Swivel,
page 6-20.
5. Perform steps 8 and 9 of Hydraulic Swivel, page 6-18.
6. Activate all systems, cycle all functions, and observe for
proper operation and any leakage.
Electrical Swivel
Description
The swivel assembly consists of a 20 conductor slip ring and
cover assembly.
Each brush set incorporates two brushes, leads, and clips
which are attached to a brush holder assembly. The brush
set leads are formed into harnesses which are routed
through the mounting plate on the swivel. The collector ring
leads are formed into one harness which is routed downward
through the center of the hydraulic swivel. Extending from
the base of the hydraulic swivel, the collector ring leads are
also formed into connectors which plug into receptacles from
the chassis power supply.
The swivel cover is secured with a seal and bolts.
The electrical swivel also incorporates a slew potentiometer.
The potentiometer controls functions in the rated capcity
limiter, working area definition, and rear axle oscillation
lockout systems.
Theory Of Operation
The electrical swivel is located on top of the water swivel and
transfers electricity between the carrier and superstructure.
Wiring harnesses transmit the electricity between the swivel
and carrier, and superstructure.
Maintenance
Removal
1. Perform steps 1 through 4 of Hydraulic Swivel - Removal
in this section.
2. Disconnect the batteries. Refer to Batteries, page 3-2.
3. Locate the connectors which join the collector ring
harness to the receptacles for the carrier.
4. Tag the connectors and their receptacles with numbers.
Disconnect the connectors from the chassis wiring
receptacles.
NOTE: If the connectors are too large to go through the
center of the hydraulic swivel, they must be
removed, see instructions below.
5. Remove the clamp securing the wiring harness to the
retainer plate on the bottom of the hydraulic swivel
assembly.
WARNING
Cleaning solvents can be toxic, flammable, an irritant to
the skin, or give off harmful fumes. Avoid prolonged skin
contact, inhalation of vapors, or smoking. Failure to
comply can result in injury or death to personnel.
CAUTION
When installing seals and rings, avoid stretching seals or
scratching grooved or gland surfaces.
CAUTION
Proper alignment when inserting the spool is required. Do
not force the spool into the case.
CAUTION
Disconnect the batteries before performing any
maintenance on the electrical system. Serious burns may
result from accidental shorting or grounding of live
circuits.
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