210 Inverness Center Parkway
Birmingham, AL 35242

Telephone: 205-991-7733
Facsimile: 205-991-9993
www.altec.com

This notice applies to your vehicle. See attached serial number list.
Dear Altec Owner,
Altec Industries, Inc. has developed a product improvement 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 SIL for the items covered under the Altec warranty policy.
Compare the serial number of your unit to the included list of affected units to verify that your unit is affected.
You may also contact Altec at 1-877-GO ALTEC (1-877-462-5832) with your unit’s serial number to determine
if there are any other outstanding notices.
If you have sold or retired the unit, please call Altec at 1-877-GO ALTEC (1-877-462-5832) to update the records.
We regret this inconvenience; however, we are taking this action in the interest of your safety and continued
satisfaction with Altec products.
Thank you for your immediate attention on this important matter.

Altec Industries, Inc.
Creedmoor Operations
Creedmoor, NC

SIL 798

Service Information Letter
July 28, 2021
Units Affected: AT37/41/48 M/ME/P/PE/S/SE aerial devices built from June 2015 to March 2020 (Verify
that your unit serial number is affected by reviewing the attached list in this SIL or by accessing your fleet
on connect.altec.com/login)

Platform Leveling Bracket Inspection
Altec is committed to providing our customers safe and reliable products from initial delivery throughout
the useful life of the unit.
Some customers have reported the failure of some of the rotary actuator mounting cap screws in the
platform leveling bracket on the affected units. Reports have also been received of cracks developing in
the platform leveling bracket where the rotary actuator is attached. Testing by Altec has shown that these
situations will not lead to the platform becoming detached from the boom.
Altec requires the platform leveling bracket assembly to be inspected as described in the Inspection Procedure beginning on page 2. If the inspection discovers any missing or damaged rotary actuator mounting
cap screws or any cracks in the leveling bracket, the unit must be taken out of service until the repair specified at the end of the Inspection Procedure is completed. The repair may include the replacement of the
platform leveling bracket with a new design bracket that has increased material thickness and a redesigned
rotary actuator mounting cap screw arrangement.
The inspection and any resulting repairs must be completed no later than the unit’s next preventive maintenance interval or one year from the receipt of this SIL, whichever comes first.
This inspection and repair are covered under the Altec Warranty Policy and can be performed by Altec,
the customer, or the customer’s warranty provider. The repair requires lifting equipment rated for at least
500 pounds. If the repair includes replacing the platform leveling bracket, a 1.5 to 1 structural test must be
performed after completing the repair. This requires up to 900 pounds of test load for the platform, and an
additional 525 pounds of test load for the material handling jib, if equipped. Altec will perform the inspec-

Inspection labor
Repair labor
Account #
Travel
NHTSA code
Prime fail P/N
Doc ref

Altec Use Only
1.0 hr
1.0 hr for bolts only, 7.25 hr for kit
010.1026.43151.475.0000.000
Not included
98
N/A
074900755

Altec Use Only
Parts Kit
AT M or ME, painted, no platform elevator
AT M or ME, galvanized, no platform elevator
AT M or ME, galvanized, platform elevator
AT P or PE, painted, no platform elevator
AT P or PE, galvanized, no platform elevator
AT P or PE, painted, platform elevator
AT P or PE, galvanized, platform elevator
AT S or SE, painted, material handling jib
AT S or SE, painted, no material handling jib
AT M or ME, painted, platform elevator

Page 1 of 5

Part No.
991026537
991026554
991026571
991026584
991026587
991026603
991026609
991026619
991026627
991026634

Qty
1
1
1
1
1
1
1
1
1
1

Warranty
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

SIL 798

tion and repair 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 $90 for the labor to perform the inspection, up to $90 for the labor to perform cap screw
replacement only, and up to $652.50 for the labor to install the leveling bracket replacement kit.
Call 1-877-GO ALTEC (1-877-462-5832) option 3 to schedule the work to be done by an Altec Mobile
Service technician or option 2 to schedule the work to be done at an Altec facility. Customers are responsible for the travel costs of an Altec Mobile Service technician if the technician performs the inspection
and/or repair at the owner’s location. An Altec Mobile Service technician may not be equipped with the
weights required to perform the structural testing.
Please ensure that the recommended procedures shown below are followed to achieve the maximum service life of the unit, including the platform attachment.
• Operators perform a preoperational inspection of the unit to detect potential service and safety issues
at the beginning of each shift before going out on the job, as described in Section 4 of the unit’s Operator’s Manual. The area at the top of the platform leveling bracket can be visually inspected through
the access hole(s) in the leveling bracket covers.
• Operators stow the booms and platform correctly before road travel as described in Section 5 of the
unit’s Operator’s Manual.
• Maintenance personnel perform scheduled unit inspections including the platform mounting structure
and fastener inspections according to the Preventive Maintenance and Inspection Checklist contained
in the Appendix of the unit’s Maintenance Manual.

Page 2 of 5

SIL 798

Inspection Procedure
Normal mechanic’s hand tools including a calibrated, click-type torque wrench rated for at least
200 foot-pounds, cleaning solution, rags, and a bright light are required for this inspection. Read
and understand all steps of the instructions before beginning the procedure
1. Position the unit on a level surface. Apply the parking brake and chock the wheels. Engage
the unit’s hydraulic system and properly set the outriggers.
2. Move the boom to position the platform near the ground.
3. Disengage the unit’s hydraulic system and turn off the engine. Remove the key from the ignition and secure it. Follow your employer’s vehicle lockout/tagout procedure.
4. Remove the left hand and right hand platform
leveling bracket covers (refer to Figure 1).
Do not remove any other covers, and do not
remove the jib, if equipped, even though those
items are shown removed in Figure 1.

LH and RH
Jib Not Shown (Do
Leveling Bracket Not Remove Jib)
Covers

Boom Tip Covers Not
Shown (Do Not
Remove These Covers)
Platform
Figure 1 – Platform Area

5. Visually inspect the top of the platform leveling bracket to check whether any of the
six rotary actuator mounting cap screws
are missing (refer to Figure 2). If any cap
screws are missing, proceed to step 11.

Missing
Cap
Screws

6. Thoroughly clean the top plate of the leveling bracket. Using a bright light, inspect
the top plate for any visible cracks (refer to
Figure 3). If there are any cracks, proceed
to step 11.

Leveling
Bracket
Figure 2 – Inspecting
Cap Screws

Cracks

Figure 3 – Inspecting
For Cracks

7. Torque the six rotary actuator mounting cap screws to 23 foot-pounds (90 percent of the normal installation torque) in a circular pattern. If none of the cap screws turn before the wrench
clicks, proceed to step 11.
8. Torque the rotary actuator mounting cap screws to 26 foot-pounds in a star pattern. If a cap
screw breaks before reaching this torque, proceed to step 11.
Page 3 of 5

SIL 798

9. Torque the single large cap screw in the center to 200 ft-lb while holding the nut securely
with a wrench.
10. Torque the six rotary actuator mounting cap screws to 26 foot-pounds in a circular pattern.
11. Review the inspection results.
• If no cracks or cap screw issues were found, reinstall the platform leveling bracket covers
and put the unit back into service. Complete the Inspection Sheet at the end of the SIL and
return it to Altec.
• If there are no cracks in the platform leveling bracket but one or more cap screws are
missing or damaged, take the unit out of service. Determine the number of replacement
cap screws and washers required. Call 1-877-GO ALTEC (1-877-462-5832) to order the
required quantity of each of the parts shown in Figure 4. Install the fasteners when they
are received, reinstall the leveling bracket covers and put the unit back into service. Complete and return the postage-paid return card showing the completion of the fastener installation or
confirm completion on-line using the instructions on the card, entering 970031464 as the kit part
number. Do not complete the Inspection Sheet at the end of the SIL.
Quantity
as reqd.
as reqd.
1

Part Number
970031464
020401207
074900760

Description
3/8-16 x 1” long Grade 8 hex head cap screw with patch
3/8” hardened flat washer
reply card

Figure 4 – Fastener Replacement Items

• If there are any cracks in the platform leveling bracket, take the unit out of service. Refer
to the serial number placard on the unit to determine the model number, and verify whether
the unit is painted or galvanized. For a model number ending in “M” or “P,” verify if the
platform is equipped with a platform elevator. For a model number ending in “S,” verify
if the platform is equipped with a material handling jib. Determine the required Leveling
Bracket Replacement Kit part number from Figure 5 based on the model and options. Call
1-877-GO ALTEC (1-877-462-5832) to order the corresponding kit. Install the kit when it
is received and put the unit back into service. Do not complete the Inspection Sheet at the
end of the SIL.
Equipped with
Model
Platform
Elevator
Yes
AT37/41/48M or ME
No
Yes
AT37/41/48P or PE
No
AT37/41/48S or SE

Equipped with
Material
Handling Jib

Yes
No

Kit Part Number
Painted Unit

Galvanized Unit

991026634
991026537
991026603
991026584
991026619
991026627

991026571
991026554
991026609
991026587

Figure 5 – Leveling Bracket Replacement Kits

Page 4 of 5

SIL 798

SIL 798 Platform Leveling Bracket Inspection Sheet
Complete this form and return to Altec to document inspection completion.
Choose one of these options.
• Online through the customer portal – Altec Connect*
Sign in or Register for an account at www.altec.com/altec-connect/
1. Select Equipment
2. Select Altec Product Notices
3. Select Report a Completed APN
• Scan and Email to [email protected]
• FAX to 1-877-659-9929
*Customer performed warranty can be submitted online for reimbursement
through Altec Connect.
Model

Altec Unit
Serial Number

To login to your existing
Altec Connect account,
scan here with your
smart phone!

Date Inspected

Company Name: _______________________________________________

Phone____________________________

Service Company Name:_________________________________________

Phone:___________________________

Company Contact: _________________________________________________________________________________
Company Street Address:_____________________________________________________________________________
City _______________________________________________ State:_________________ ZIP Code:________________
Signature:_____________________________________________________

Submission of this form does not order parts or schedule service from Altec.
If the customer or the customer’s warranty provider performs the repair, a warranty claim must be submitted to be reimbursed for the cost of the parts and/or labor through Altec Connect.
For more information or to schedule the work to be done by an Altec Service technician, call:
1-877-GO ALTEC (1-877-462-5832)
Make copies of this form for additional units if needed.
Page 5 of 5