Customer Outreach
PO Box 8338
Saint Joseph, MO 64508

[email protected]
connect.altec.com/login

Phone 1-877-GO ALTEC
Facsimile 1-877-659-9929

This letter applies to your vehicle. Refer to the provided 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 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 safety and continued satisfaction with Altec products.
Thank you for your immediate attention on this important matter.

Service Information Letter

SIL 856

Rotation Bearing Washer Inspection
Units Affected: AT238P and AT335 aerial devices built from October 2019 to November 2021. Verify
your unit is affected by reviewing the attached list or accessing Altec Connect.
Background: Altec has learned of the potential for washers on the outer race rotation bearing cap screws
to overlap the adjacent weld on the affected units. While there have been no reports of machine failures to
date, interference with the weld under the washer could cause cap screw failure.
Customer Action: Inspect the washers on the outer race rotation bearing cap screws for weld interference using the Inspection Procedure beginning on page 2, or contact Altec to perform this inspection. If
the inspection shows that weld repair and fastener replacement are required, order and install the Rotation
Bearing Bolts Kit, part number 991472460, or schedule the installation of the kit by Altec. Complete this
inspection and this repair, if required, no later than the next regular maintenance interval. During the
installation of the kit, if it is determined that pedestal replacement is required, schedule this replacement
with Altec, and keep the unit out of service until the replacement is performed.
Requirements: The inspection is estimated to take 30 minutes and one person to complete. The weld
repair and fastener replacement is estimated to take two hours and one person to complete. No welding is
required. The weld repair mentioned under Customer Action consists of grinding the weld.
Completion and Warranty: The inspection and the weld repair and fastener replacement are covered
under the Altec Warranty Policy and can be performed by Altec, the customer, or the customer’s warranty
provider. The pedestal replacement is covered under the Altec Warranty Policy and must be performed at
an Altec facility. Altec will perform the inspection and repair for free at an Altec facility. If the customer
or the customer’s warranty provider performs the inspection and/or the weld repair and fastener replacement, a warranty claim must be submitted to be reimbursed for the cost of the labor. Altec will allow up to
$45 for the labor to perform the inspection and up to $180 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 and/or weld repair and fastener replacement 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
Doc ref

Page 1 of 4

Altec Use Only
0.5 hr
2.0 hr
010.0554.43151.000.9225.000
Not included
N/A
990936658
074900822

Description
Rotation bearing bolts kit

Altec Use Only
Part No.
991472460

Qty
1

Warranty
Yes

Released: June 22, 2022

SIL 856

Inspection Procedure: A flashlight or work light is 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 turn off the engine. Remove
the key from the ignition, and secure it following your employer’s vehicle lockout/tagout
procedure. Chock the wheels.
2. Locate the rotation bearing outer race mounting cap screws and washers under the top plate
of the pedestal (refer to Figure 1).
3. Using a flashlight or work light, look closely at the washer shown as number 1 in Figure 2
to determine if the washer overlaps the weld next to the gusset under the pedestal top plate
(refer to Figures 3, 4, and 5). Mark Figure 6 to indicate the inspection result for this washer.

16

1

15

2
3

14
Front

13

Curb
Side
12

4

Street
Side
5

Rear
11

6
10

7
9

Figure 1 — Outer Race Rotation
Bearing Cap Screws and Washers

Weld

Gusset
Figure 3 — Washer with
No Weld Interference

8

Figure 2 — Outer Race Washer Numbering Pattern
(Bottom View)

Weld

Gusset
Figure 4 — Washer with
Weld Interference

Weld

Gusset
Figure 5 — Washer with
Severe Weld Interference
Page 2 of 4

SIL 856

Washer Overlapping Weld Washer Overlapping Weld
1
Yes | No
9
Yes | No
2
Yes | No
10
Yes | No
3
Yes | No
11
Yes | No
4
Yes | No
12
Yes | No
5
Yes | No
13
Yes | No
6
Yes | No
14
Yes | No
7
Yes | No
15
Yes | No
8
Yes | No
16
Yes | No
Figure 6 — Washer Inspection Results

4. Repeat step 3 for washer number 2 through 16, proceeding clockwise one at a time as viewed from the
bottom.
5. Review the inspection results.
• If none of the washers overlap the adjacent weld, no repair is required. Perform steps a and b
shown below.
a. Put the unit back into service.
b. Complete the Inspection Sheet at the end of the SIL and return it to Altec.
• If one or two washers overlap the adjacent weld, perform steps a through c shown below.
a. Schedule the installation of the Rotation Bearing Bolts Kit, part number 991472460, by
either of the methods shown below.
– Contact Altec Service to schedule the installation of this kit.
– Contact Altec Parts to order this kit, and schedule for your own technician or your
third party provider to install it upon receipt.
b. Put the unit back into service while awaiting the repair.
c. Do not complete the Inspection Sheet at the end of the SIL. Completion of the SIL will
be documented after the kit is received and installed.
• If three or more washers overlap the adjacent weld, perform steps a through c shown below.
a. Take the unit out of service until repair is completed.
b. Schedule the installation of the Rotation Bearing Bolts Kit, part number 991472460, by
either of the methods shown below.
– Contact Altec Service to schedule the installation of this kit.
– Contact Altec Parts to order this kit, and schedule for your own technician or your
third party provider to install it.
c. Do not complete the Inspection Sheet at the end of the SIL. Completion of the SIL will
be documented when the repair is complete.

Page 3 of 4

SIL 856

Inspection Sheet

Complete this form and submit it to Altec to document inspection completion.
Choose one of these options for submission.
• Online through the customer portal – Altec Connect*
Sign in or Register for an account at connect.altec.com/login
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
• Mail to: Customer Outreach; PO Box 8338; Saint Joseph, MO 64508
Model

Altec Unit Serial Number

Scan here to access
Altec Connect.

Date Inspected

Company Name: _______________________________________________

Phone____________________________

Service Company Name:_________________________________________

Phone:___________________________

Company Contact: _________________________________________________________________________________
Company Street Address:_____________________________________________________________________________
City: _______________________________________________State/Province:_________________________________
ZIP/Mailing Code:___________________________________Country:________________________________________
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, submit a warranty claim through
Altec Connect to be reimbursed for the cost of the parts and/or labor.
Contact Altec for more information or to schedule the work to be done by Altec.
Make copies of this form for additional units if needed.

Page 4 of 4