167
SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
Non-Routine Maintenance
Section 5 – Procedures
5.
Position the chain anchor to its mounting location
at the underside of the outer boom section and
secure by installing scerwing 2 anchor bolts.
6.
Torque the bolts to 80 lb.-ft.
7.
Start the engine and operate extend/retract
function through several cycles to assure proper
operation. Repair as required.
8.
Adjust boom chain tension. Refer to Section 5.4-
11 for Chain Tension adjustment procedure.
1st BOOM ASSEMBLY
2nd BOOM ASSEMBLY
3rd BOOM ASSEMBLY
4th BOOM ASSEMBLY
EXTENSION
1 CHAIN
2 CHAINS
EXTENSION
2 CHAINS
RETRACT
1 CHAIN
RETRACT
Figure 92
SJ1056 TH/THS / / SJ1256 THS Boom Chains
For SJ1056 TH/THS Only
▪
Retract Chain Removal (1st to 3rd Boom
Section)
1.
With boom on the ground and extended enough
to access the anchor plate bolts on 2nd boom
section, remove rear access cover plate.
2.
Using snap ring pliers, remove the 2 snap rings
from both sides of anchor pin on 3rd boom
section.
3.
Remove chain with anchor from rear of boom and
set aside.
Anchor &
Cotter Pin
Chain
Pin
3rd Boom
Section
Snap Ring
Chain Anchor
Figure 93
Rear Retract Chain Anchor 3rd boom section
SJ1056 TH/THS / / SJ1256 THS
4.
On front of 1st boom assembly, remove bolts from
retract anchor plate.
Anchor &
Cotter Pin
Anchor Bolts
Slide Pads
3rd Boom
Section
Slide Pads
Bolts
Chain
Anchor
Figure 94
Front Retract Chain Anchor
5.
Remove bottom slide pads to reach retract chain
anchor. Refer to section 5.6-3 for slide pads
removal procedure.
6.
Pull retract chain from front of boom and
thoroughly inspect.
NOTE
Refer to section 5.4-8 for detailed procedure on
how to inspect boom chains.
Содержание SJ1044 TH
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