NorAM 65ET T4 FINAL, Руководство оператора

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NORAM 65ET GRADER
4-44
When Required
1
4
Lubrication and Maintenance - Grader Components
Circle Guide - Adjust
The circle and circle guides must be kept clean and
adjusted properly. Improper adjustment will cause
excessive tooth wear and poor angle control.
Adjust vertical spacing before radial spacing.
1. Clean circle guides and bottom of circle so
measurements are accurate. Support circle using jack
stands, allowing moldboard to hang from circle.
2. Use a feeler gauge to measure clearance between the
top of the circle
(1)
and the draw bar
(2)
. Start with
the guide closest to the circle motor making sure vertical clearance
(3)
does not exceed 1.52 mm
(0.060 in.). To reduce clearance, remove shims
(4)
.
3. Using machine hydraulics, rotate circle 360° to ensure that it turns freely.
4. Turn circle so that a motor pinion gear tooth is
aligned between the center of the pinion gear
(1)
and
the front guide center lock nut
(2)
. Loosen circle guide
nuts and jam nuts
(3)
of radial clearance adjusting
screws on front guide.
5. With one flank of gear tooth in contact with one circle
tooth, measure the clearance between the two teeth
on the opposite side using a feeler gauge. Clearance
should be between 0.76–1.52mm (0.030–0.060 in.). If
clearance is incorrect, turn adjusting screws of front
guide to provide 0.76 mm (0.030 in.) clearance.
6. Tighten jam nuts on front guide. Torque jam nuts to 270–300 N•m (200–225 lb-ft).
7. Loosen circle guide nuts and jam nuts
(1)
and radial
clearance adjusting screws
(2)
on rear guide (opposite
of circle motor).
8. Set clearance between inner circle guide and curved
circle guide wear plates to 0.030 in. (0.76 mm) using
adjusting screws. Torque circle guide nuts to 470–540
N•m (350–400 lb-ft).
9. Tighten jam nuts on rear guide. Torque jam nuts to
270–300 N•m (200–225 lb-ft).
10. Rotate circle 360° to ensure that it turns freely. If circle does not turn freely, readjust the tooth
clearance at the front guide. DO NOT exceed 1.52 mm (0.060 in.) clearance.