140
SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
Section 5 – Procedures 250 Hour or Quarterly Routine Maintenance
7. When the chains are well lubricated, reinstall the
cover.
8. Start the engine and fully extend the boom.
9. Shut down engine and remove key from ignition
switch.
10. Inspect the extend chain(s). See figures below.
SJ 1044 TH/THS Extend Chain
Figure 28 SJ1044 TH/THS Boom Extend Chain
SJ 1056 TH/THS Extend Chain
Figure 29 SJ1056 TH/THS and SJ1256 THS Boom
Extend Chains
NOTE
The chain(s) should appear well lubricated, with
no signs of wear or rust.
11. If chain appears dry, rusty, or worn, the chains
must be removed for a complete inspection and
lubrication. Refer to Section 5.6-2 for boom chains
replacement procedure.
5.4-9 Check Boom Slide Pad Clearances
Slide pads support the boom components as the
boom is extended and retracted. The slide 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 slide 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 Section 5.6-3 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 boom and slide pads at each
section. Clearance should not exceed 0.08 in. (2
mm).
Bottom Slide Pads Clearance
Figure 30 Bottom Slide pads
5. When clearances exceed this amount, add shims
or replace the pads.
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