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Bulletin: SVB-121
Date Issued: July 31, 2006
Category: Design Improvement
Subject: Structural Upgrades
Machine Models: TEI¨ Bundle Breakers¨ delivered since September
2002
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Problem:
Alliance
engineers recently observed structural problems developing on a
Bundle Breaker¨
that had been in service for approximately one year. As a result of
these observations Alliance is aware that several areas of the
machine structural design need revision to provide increased
strength and durability.
In response to
these observations the design changes contained in this service
bulletin have been incorporated as standard features for all new
production Bundle Breaker¨
units. These changes will ensure more consistent and reliable
breaking operation when breaking taller bundles, or for those
bundles that may be close to the physical size limits that the
machine can accommodate.
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Recommended
action:
Alliance
recommends that Bundle Breaker¨
customers perform the following modifications within 60 days after
receipt of this service bulletin. These design changes will provide
increased in-service durability and reliability when compared to the
as-delivered configuration.
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Modification Procedure:
If you need
additional assistance to perform this modification or have any
questions, please call Mr. Gary Kneale of Alliance Field Service at
(509) 842-5134 for further information.
All parts noted
in this service bulletin can be obtained from the Alliance Parts
Dept.
| 00X1697 |
Bolts |
qty (3) |
| 00X0166 |
C-crown lock-nut |
qty (3) |
| 00X1026 |
Socket Head Cap screw |
qty (20) |
| 00X0004 |
Lock-washer |
qty (20) |
| 00X0154 |
Nut |
qty (20) |
| 1031167 |
Gusset |
may require up to qty (4) |
Part A. Platen
linkage pin replacement
-
Lower the platens onto wooden supports of equal height so
that the linkage pins connecting the upstream and downstream platens
together are structurally unloaded. De-energize the machine.
-
Remove installed pivot pins (3 locations) and discard.
Inspect the pin bushings for any signs of distress and / or weld
cracking. If necessary replace any distressed bushings or apply
additional weld filler material at crack locations.
-
Install replacement p/n 00X1697 bolts with p/n 00X0166 C
Crown locknuts as shown in Figure 1. Torque nut to 170 ft-lbs.
Lubricate new bolts using existing grease zerks.
Note: Do not
substitute other locally-sourced bolts for the Alliance specified
above. Alliance cannot ensure proper material strength exists with
non-Alliance-provided parts.
-
Energize machine and raise platens to the full up position.
Lockout platens per the Operator Manual. De-energize the machine and
remove wooden supports.
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Replace pins with bolts/nuts |
Figure 1
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Part B. Confirm
location of infeed and exit conveyor top surfaces are within
tolerance
-
Using a straightedge, check that the top surface of the exit
conveyor and the top surface of the infeed conveyor are flush to
within 1/16” (1.5mm) relative to each other. Be sure to measure both
the drive side and operator sides of the conveyors, as they may
differ. If not within this tolerance, shimming under the respective
lower conveyor will be required to bring both top surfaces into
tolerance with each other.
Figure 2
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Part C.
Conveyor assembly support replacement
- Inspect to see which style of conveyor support is installed
on the upstream side of the entry conveyor and the downstream side
of the exit conveyor (4 locations total)
- If
the small angular support is installed, it will require replacement
with the larger p/n 1031167 gusset as shown below in Figure 3.
- If
the larger p/n 1031167 gusset is already installed, skip Steps 7-9
and proceed to Part D.
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Shim in position (shown
for reference) |
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P/N 1031167
gusset |
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Figure 3.
Current production gusset configuration
WARNING
– Do not crawl underneath the Bundle Breaker¨
to inspect or repair potentially unstable parts without first
installing workstands underneath the Bundle Breaker conveyor
assemblies. These parts may cause injury to personnel underneath
the Bundle Breaker¨
if workstands are not first installed.
-
On each side of both the infeed and exit conveyor assemblies,
remove the three existing 3/8” diam bolts and discard. Remove the
conveyor assemblies and provide temporary support as required for
the conveyor assemblies.
-
Where necessary remove the smaller support gusset and replace
it with the larger p/n 1031167 support gusset by welding in place
(as shown in Figure 3 above). Insure that the top surface of the
new gusset is located flush with the top surface of the structural
cross-beam member.
-
If necessary from step 5) fabricate shims of the proper
thickness and locate holes in the shims to match the existing bolt
holes in the side frames of the conveyor assemblies. Insert the
shims into place (as shown in the photo above), position the
conveyors assemblies into the correct final location and temporarily
secure the conveyors to the frames with clamps. Go to Step 11.
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Part D.
Conveyor assembly bolt replacement
Note: Perform
Steps 10 & 11 on one bolt at a time.
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On each side of the infeed and exit conveyor assemblies,
remove the existing 3/8” diam bolt and discard.
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Drill out the existing bolt hole to ý” diam. Install new p/n
00X1026 socket head cap screw together with p/n 00X004 lock washer
and p/n 00X0154 nut. Torque nut to 90 ft-lbs.
-
Repeat steps 10 & 11 until all 3 existing bolts have been
replaced.
-
On each side of the infeed and exit conveyor assemblies, add
(2) additional ý” diam holes. Install new p/n 00X1026 socket head
cap screw with p/n 00X004 lock washer and p/n 00X0154 nut. Torque
nut to 90 ft-lbs.
The final
configuration is shown in Figure 4.
-
Repeat steps 10) - 12) for both sides of the infeed and exit
conveyor assemblies for a total of 20 bolt locations.
-
Remove any temporary supports and re-energize the machine.
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P/N 1031167
gusset
|
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Exit conveyor bundle flow
direction (for reference only) |
Figure 4
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