The electrical swivel consists of brushes, collector
each ring) stacked alternately on two brush holding
rings, and a cover assembly. The swivel uses 46 sets
studs which are threaded into the swivel mounting
of brushes and collector rings.
plate. The stack is completed by a nylon plate
attached across both studs. It acts as a bearing for the
Each collector ring and lead assembly is mounted on a
outer end of the collector core, and holds the brush
nylon bushing/insulator. These are stacked together to
arms firmly on the studs, in proper alignment with the
form the collector core. The core assembly extends
rings. Leads from the brush sets are formed into four
though the swivel mounting plate and is attached to
connectors, attached to the mounting plate, which
the center post with set screws. Collector ring leads
mate with connectors on the superstructure wiring
are formed into one harness which is routed downward
through the center post, and the center of the hydraulic
swivel. Extending from the base of the hydraulic
The electrical swivel also incorporates a cam plate and
swivel, the harness is separated and routed into four
area definition switches.
These switches control
connectors which mate with receptacles from the
functions in the load moment indicating system,
carrier wiring harness.
superstructure steering, and the axle oscillation
Brushes with leads, are mounted in pairs, on holder
arms, to match each ring. Tension springs on the
The swivel is protected by a sealed cover which is
holder arms assure contact between brushes and the
attached by two bolts to the base plate/mounting
collector rings. The brush arm assemblies (one for
For more detailed information refer to the applicable SM package.
Do not disconnect the collector ring wires
Perform steps 1 through 4 of 14 PORT AIR/-
crimped at the top of the swivel assembly.
HYDRAULIC SWIVEL - REMOVAL in this Section.
Locate the four connectors which join the
collector ring harness to the receptacles for the carrier.
Disconnect the batteries before performing
Tag and disconnect the two rectangular
any maintenance on the electrical system.
connectors from the carrier wiring. Removal of the
Serious burns may result from accidental
connector from the wire is not required.
shorting or grounding of live circuits.
Position battery disconnect switch to OFF.
with numbers 1 and 2. Disconnect both connectors
from the chassis wiring receptacles.