Grove Published 11-22-2016, Control # 345-12 6-15
RT9130E-2 SERVICE MANUAL SWING SYSTEM
5. Orient ring gear such that its point of max eccentricity
(“high point”) is located between the swing drives.
Position swing drives so that pinion is centered within
cutout in base plate and motor ports face towards the
outboard side (Figure 6-4).
a. Using shims, set backlash by moving the swing
drive assemblies toward the bearing in order to
mesh the pinion with the ring gear teeth.
b. Check tooth engagement squareness and vertical
tooth engagement.
c. Remove backlash shims and recheck backlash.
6. Position the two retainer plates on the bottom of
hydraulic swivel spool, engaging the lugs on the carrier
frame, and secure them to the spool with four bolt
retainers and eight bolts. Bend all the retainer tabs to
make contact with the bolt heads.
7. Plug the swivel wiring harness connectors into the
carrier receptacles. Secure the ground wire to the
ground stud using a washer, lockwasher, and nut.
8. Install the clamp securing the swivel wiring harness to
the retainer plate on the bottom of the hydraulic swivel.
9. Connect all water and hydraulic lines to the ports on the
bottom of the swivel as tagged during removal.
10. Install the boom and lift cylinder following the procedures
outlined in Boom, page 4-1.
11. Install the counterweight and auxiliary hoist following
procedures outlined in Hoist and Counterweight, page 5-
1.
12. Reconnect the batteries.
13. Check the slew potentiometer in the electrical swivel for
proper orientation. Refer to Swivels, page 6-16.
Testing
Activate the crane and check for proper function.
NOTE: If the superstructure does not turn freely after
bearing and pinion replacement, contact your local
distributor.
Item Description
1 Bearing
2 Swing Gearbox
3 Pinion Guard
4 Turntable
CAUTION
Do not clamp over pinion.
FIGURE 6-4
Tooth Identified As Max Eccentricity
.005 Thick Shim By Full
Widt h To To o t h
Engagement (0.010
Backlash) 2 Places
6686
4
2
3
2
1
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