SIL 746

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 SIL for specific unit identification.
Dear Altec Owner,
May 1, 2020
Altec Industries, Inc. has developed a product improvement which relates to certain AM55 aerial devices
and DC47 digger derrick units built in September and October 2019.
Refer to SIL 746 for items covered under the warranty policy. Altec will supply necessary parts to correct
this condition.
In order to determine if your unit is affected by SIL 746, compare the serial number of your unit with the list of
affected units as described on the SIL. The product improvement will be performed by Altec. Contact Altec at
1-877-GO-ALTEC (1-877-462-5832) for further assistance.
At any time, you may 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) so the records may
be changed.
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.
Midwest Operations
St. Joseph, MO
SIL 746
Service Information Letter
May 1, 2020
Units Affected: Certain AM55 aerial devices and DC47 digger derricks built in September and
October 2019 (see attached list)
Frame Rail Reinforcement
Altec is committed to providing our customers reliable products from initial delivery throughout
the useful life of the machine.
Altec has discovered that the front bumper grounding cable lug attachment hole was drilled in a
location of the frame rail not allowed by the chassis manufacturer. The mislocated hole can cause
fatigue cracks to develop in the frame rail.
Altec has designed an insert plate to be installed on the inside of the chassis frame rail. This will
provide reinforcement to prevent cracking of the frame rail. Frame Rail Insert Kits are available
containing the parts for specific chassis drive trains. The kit part numbers are shown below. Altec
requires that the correct kit be installed on each unit no later than the next regular maintenance
interval.
Drive Train 		 Kit Part Number
4x4 		
991076326
4x2		
991079837
This repair is covered under the Altec Warranty Policy and must be performed at an Altec Service Center. Altec will perform the repair for free. Call 1-877-GO ALTEC (1-877-462-5832) to
schedule the work to be done at an Altec facility.
Inspection labor
Repair labor
Account #
Travel
NHTSA code
Prime fail P/N
Doc ref
Altec Use Only
0.0 hr
10.0 hr
010.0337.43151.000.000.000
Not Included
16
None
074900715
Parts Kit
Frame Rail Insert Kit, 4x4
Frame Rail Insert Kit, 4x2
Page 1 of 1
Part Number Qty
991076326
1
991079837
1
Warranty
Yes
Yes