Customer Outreach
PO Box 8338
Saint Joseph, MO 64508

[email protected]
connect.altec.com/login

Phone 1-877-GO ALTEC

This campaign applies to your vehicle. Refer to the provided list.
Dear Altec Owner,
Altec Industries, Inc. has issued a customer satisfaction campaign as described in the included Service Information Letter (SIL). According to our records, you own one or more units this applies to.
Refer to the included letter for the items covered under the Altec Warranty Policy. If you had this repair performed
before you received this letter, you may be eligible to receive reimbursement for the cost of obtaining a pre-notification remedy of the problem associated with this letter.
Compare your unit’s identifying information with the provided list to verify your unit is affected. You may also
contact Altec or view your fleet through Altec Connect to determine if there are any other outstanding notices.
If you have sold or retired the unit, update the records through Altec Connect. If you have leased this equipment
to another person or company, you are required by Federal Law to forward a copy of this notice to the lessee by
first class mail within ten (10) days of the receipt of this notice.
We regret this inconvenience; however, we are taking this action in the interest of your continued satisfaction with
Altec products.
Thank you for your immediate attention on this important matter.

Service Information Letter SIL- 3156-A
Turntable Welds
Units Affected: Certain LS87 aerial units built from June 2016 to January 2024. Verify your unit is affected by reviewing the attached list or accessing Altec Connect.
Background: Altec has learned that the welds on the turntable between the side and base plate(s) were
not completed as required by production on the affected units. This could result in cracks forming in the
turntable weld.
Customer Action: Inspect the turntable using the Inspection Procedure beginning on page 2, or contact
Altec to perform this inspection. Order the Turntable Repair Kit, part number 991750291, or schedule the
installation of this kit by Altec. Complete the inspection and repair no later than the next preventive maintenance cycle or within 90 days of receipt of this notice, whichever comes first. Warranty for this repair
expires August 16, 2026.
Subsequent damage due to failure to perform the required action(s) in the time period allowed will not be
covered by warranty.
Ask your service provider to check for any outstanding notices at your next appointment.
Requirements: Every unit requires the installation of the proper kit for completion. The inspection is
estimated to take 30 minutes and one person to complete. The repair is estimated to take 8 hours and one
person to complete. All welds must be applied by a welder having the AWS D1.1 2G qualification for
horizontal welding on steel.
Completion and Warranty: The inspection and repair are covered under the Altec Warranty Policy
until August 16, 2026 and can be performed by Altec, the customer, or the customer’s warranty provider.
An Altec Mobile Service technician can perform this inspection but is not able to perform this repair. Altec will perform the work for free at an Altec facility. If the customer or the customer’s warranty provider
performs the work, a warranty claim must be submitted to be reimbursed for the cost of the parts and/or
labor. Altec will allow up to $45.00 for the labor to perform the inspection and up to $720.00 for the labor
to perform the repair. Customers are responsible for the travel costs of an Altec Mobile Service technician
if the technician performs the inspection at the owner’s location.
Altec Contact Info: Altec Connect: connect.altec.com/login
Phone: 1-877-GO ALTEC (1-877-462-5832) | Options: 1 - Parts; 2 - Shop Service; 3 - Mobile Service;
4 - Technical Support; 5 - Global Rental Service Request; 6 - Chassis Repair

Inspection labor
Repair labor
Account #
Travel
NHTSA code
Prime fail P/N
Kit instructions

Altec Use Only
1.0 hr (Service) 0.5 hr (Other)
8.5 hr (Service) 8.0 hr (Other)
010.0953.43156.000.9420.000
Not included
90
N/A
074900926

Released: August 16, 2024

Description
Turntable repair kit

Altec Use Only
Part No.
991750291

Qty
1

Warranty
Yes

Page 1 of 3

SIL-3156-A

Inspection Procedure: Normal mechanic’s hand tools, a hand mirror, and soap and water to clean the
welds are required for this inspection. Inspect the full length, inside, and outside of all welded seams.
1. Read and understand all steps of the instructions before beginning the procedure. Wear appropriate
personal protective equipment (PPE) following your employer’s requirements.
2. Make sure the boom is in the fully stowed position. Position the unit on a level surface, apply the
parking brake, and turn off the engine. Remove the key from the ignition, and secure it following your
employer’s vehicle lockout/tagout procedure. Chock the wheels.
3. Locate the curb side turntable side plate near the rotation gearbox. Inspect the seam connecting the
side plate to the base plate (refer to Figure 1). There will be a gap in the middle of the welded seam.
At the points where the welds stop, look for evidence of cracking on the inside and outside of the seam
(refer to Figures 2 and 3). Use soap and water to clean the seams of dirt or debris, if necessary. Record
the inspection results below.
Are cracks present in the outside seams?
 Yes
 No
Are cracks present in the inside seams?
 Yes
 No

Inspection
Location

Figure 1 — Inspection Locations Inside and Outside
of the Weldment (2 of 4 Inspection Locations Pictured)

4. Locate the street side turntable side plate near the lower control valves. Inspect the seam connecting
the side plate to the base plate (refer to Figure 4). There will be a gap in the middle of the welded seam.
At the points where the welds stop, look for evidence of cracking on the inside and outside of the seam.
Use soap and water to clean the seams of dirt or debris, if necessary. Record the inspection results in
the inspection results below.
Are cracks present in the outside seams?
 Yes
 No
 Yes
 No
Are cracks present in the inside seams

Page 2 of 3

SIL-3156-A

Missing Weld
Section
Inspection
Point

Missing Weld
Section
Inspection
Point
Weld Section
Weld Section
Figure 2 — Curb Side
Side Plate Seam Inspection
1 of 2 Inspection Points Pictured

Figure 3 — Inside Side Plate
Seam Inspection 1 of 2
Inspection points Pictured

5. Review the inspection results.
• If there are one or more cracks in the seams, proceed to step 6.
• If there are no cracks in seams, proceed to step 7.
6. Further direction is required.
a. Put the unit back into service.
b. Contact Altec Technical Support at 1-877-GO ALTEC (1-877462-5832) option 4 for further repair instruction.
7. Repair is required.
a. Put the unit back into service.
b. Arrange for the installation of the Turntable Repair kit, part number 991750291, using one of the methods below.
• Contact Altec Service to schedule the installation of the kit.
• Contact Altec Parts to order the kit, and schedule for your own
technician or your third party provider to install the kit.
c. Install the kit upon receipt.

Missing Weld
Section
Inspection
Point

Weld Section
Figure 4 — Street Side
Side Plate Seam Inspection

Page 3 of 3