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Published 3/26/2018, Control # 596-05
GRT8100 SERVICE MANUAL SWING SYSTEM
SWIVELS
Description
The swivel assembly consists of a 12 port hydraulic swivel
Figure 6-5, a 2 port water swivel, and a 20 conductor slip ring
electrical swivel. Solid connections cannot be used to
transfer oil, heater hot water and electricity between the
carrier and superstructure due to the continuous 360 degree
swing. Use of swivels efficiently accomplishes this function.
The barrel portion of the hydraulic swivel is attached to the
turntable base plate by four bolts, washers, and bushings
which connect to mounting lugs on the case.
The spool portion of the swivel rides on a thrust ring at the
top of the swivel case. The spool portion is held stationary to
the carrier by bolts and bolt retainer plates attached to the
swivel retainer plate. This engages the carrier frame lugs
with bolts and jam nuts and allows the spool to remain
stationary with the carrier as the case rotates with the
superstructure.
The spool portion of the water swivel is attached to the spool
of the hydraulic swivel by four bolts. The hydraulic and water
swivel spools remain stationary with the carrier as the
superstructure rotates. The water swivel case contains a lug
which is keyed to a corresponding lug on the hydraulic swivel
case, causing the water swivel to rotate with the
superstructure.
The electrical swivel center or collector ring assembly is
secured by setscrews to a center post which is bolted to the
spool of the hydraulic swivel. This allows the collector ring
assembly to remain stationary with the carrier. The outer
portion or brush assembly is mounted on two studs which
are located on the mounting plate assembly retained to the
water swivel barrel by a bolt. This allows the brush assembly
to rotate with the superstructure around the stationary
collector core.
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