6-14
Published 3/26/2018, Control # 596-05
SWING SYSTEM GRT8100 SERVICE MANUAL
5. Install gearbox pinion, aligning high point (maximum
eccentricity) on turntable bearing. Using a 0.203 mm
(0.008 in) thick shim, check backlash Figure 6-4. If
pinion must be moved to achieve proper backlash,
contact your local distributor.
6. Position retainer plate on bottom of hydraulic swivel
spool. Engage lugs on carrier frame and secure to spool
with two bolt retainers and four bolts after applying
Loctite #271 to bolt threads. Torque bolts to 270 Nm
(199 lb-ft). Bend all retainer tabs to make contact with
bolt heads.
7. Plug swivel wiring harness connectors in carrier
receptacles. Secure ground wire to ground stud using a
washer, lockwasher, and nut.
8. Install clamp securing swivel wiring harness to retainer
plate on bottom of hydraulic swivel.
9. Connect all water and hydraulic lines to ports on bottom
of swivel as tagged during removal.
10. Install boom and lift cylinder following procedures
outlined in Section 4 - Boom.
NOTE: Removable counterweight weighs approximately
10,000 kg (22.000 lb).
11. Attach an adequate lifting device to the counterweight.
Position the counterweight under the turntable aligning
the pin holes. Install the pins and clip pins securing the
counterweight to the turntable.
12. Reconnect batteries.
13. Check slew potentiometer in the electrical swivel for
proper orientation. Refer to Swivels, page 6-15.
Testing
Activate crane and check for proper function.
NOTE: If superstructure does not turn freely after bearing
and pinion replacement, contact your local
distributor.
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