Skyjack SJ519 TH, Руководство по обслуживанию

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SJ519 TH 216942AC
Section 4 – Procedures 250 Hour or Quarterly Routine Maintenance
5.4-8 Check Boom Wear Pad Clearances
Wear pads support the boom components as the
boom is extended and retracted. The wear pads must
maintain clearance between the contact surface of the
pad and the adjacent sliding surface. This clearance
ranges between 0.031 – 0.062 in. (0.79 – 1.58 mm)
TOTAL for both sides of the boom. When clearances
exceed this amount, shims need to be added or the
pads must be replaced.
The wear pads are chamfered on the corner of the
wear surface. This serves as a wear indicator. When
the chamfer is no longer visible, replace the pads.
Additional wear will allow interference with inserts
in the pads. Refer to
5.6-1 Wear Pads Replacement
Procedure for slide pads replacement procedure.
Lubrication of the pads require application of grease
on the boom surfaces which come in contact with the
pads.
1. Park telehandler on a firm level surface.
2. Extend the boom and rest the forks on a level
surface.
3. Apply park brake then shutdown the engine and
remove key from ignition switch.
4. Measure the clearance between the bottom
surfaces of the inner boom and the wear pads.
Bottom
Wear Pads
Figure 25
Bottom Slide pads
5. Clearance should not exceed 0.08 in. (2 mm).
When clearances exceed this amount, add shims
or replace the pads.
6. Start the engine and raise the boom off the level
surface ensuring there is no upward force applied
to the boom.
7. With park brake applied, shut down engine and
remove key from ignition switch.
8. Measure the clearance between each side wear
pad and the boom at each section as follows:
▪
Place a bar against the side of the boom section
and pry the section sideways as far as possible.
▪
Measure the clearance between the side of
the boom and the side wear pads. Clearance
should not exceed 0.08 in. (2 mm).
Side Slide Pads
Figure 26 Side Slide Pads Clearance
9. Remove rear access cover so that rear of the
boom is visible.
10. Start the engine and fully retract the boom so that
upper and side slide pads on each boom section
are visible. See figure below.
Upper Slide Pads Side Slide Pad Side Slide Pad
Figure 27 Rear Upper and Side Slide Pads