AOctobv

Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A

Subject: TBB Saf-T-Liner C2 Entrance Door Welds
Models Affected: Specific Thomas Built Buses Saf-T-Liner
C2 buses manufactured March 1, 2007, through August 14,
2017.
General Information
Daimler Trucks North America LLC (DTNA), on behalf of its wholly owned subsidiary, Thomas Built Buses (TBB),
is initiating Field Service Campaign SF539 to modify the vehicles mentioned above.
There are 83,372 vehicles involved in this campaign.
On certain vehicles, the welds in the front leaf entrance door may crack.
New brackets will be installed.
REVISION: The primary failed part has been updated to TBB 138672.

Additional Repairs
Dealers must complete all outstanding Recall and Field Service campaigns prior to the sale or delivery of a vehicle.
A Dealer will be liable for any progressive damage that results from its failure to complete campaigns before sale
or delivery of a vehicle.
Owners may be liable for any progressive damage that results from failure to complete campaigns within a
reasonable time after receiving notification.

Work Instructions
Please refer to the attached work instructions.

Replacement Parts
Replacement parts are now available and can be obtained by ordering from your facing Parts Distribution Center.
Table 2 – Replacements parts for SF539
Campaign
Number Part Number

Qty. Per
Vehicle

Description
DOOR BRACKET INSTALLATION KIT
Kit Contains:

SF539A

TBB 215288

TBB 212671

•
•
•
•

TBB 69006172
TBB 69002183
TBB 27159853
TBB 127680

THREADED INSERT,BLIN
SCREW-CAP, 1/4-20, X 1, FLAT, HEX
SCREW-MACHINE,10-24
PUSH CLIP, .50 DIA SHAFT

2 ea
2 ea
1 ea
1 ea

Door Linkage Bracket, Forward Leaf, AG2 Entrance Door, Service Only
Table 1

1 kit

1 ea

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Daimler Trucks
North America LLC

AOctobv

Field Service Campaign

September 2017
SF539A
Removed Parts
Please follow Warranty Failed Parts Tracking shipping instructions for the disposition of all removed parts.

Labor Allowance
Table 1 – Labor Allowance
Campaign
Number

Procedure

SF539A

Replace Entrance Door Bracket

Time Allowed
(Hours)

SRT Code

0.5

996-1006A

Correction Code
12-Repair Recall / Campaign

Table 2

Claims for Credit
You will be reimbursed for your parts, labor, and handling by submitting your claim through the Warranty system
within 30 days of completing this campaign. Please reference the following information in OWL:
REVISION: The primary failed part has been updated to TBB 138672.
•
•
•
•
•
•
•

Claim Type is Field Service Campaign.
Enter the campaign number and appropriate group code (SF539-A).
In the Primary Failed Part Number field, enter TBB 138672.
In the Parts field, enter the appropriate part number(s) as shown in the Replacement Parts Table.
In the Labor field, enter the appropriate SRT from the Labor Allowance Table.
The VMRS Component Code is 174-011-043 and the Cause Code is A1 - Campaign.
The campaign will terminate on February 28, 2019.

IMPORTANT: OWL must be viewed prior to performing the field service to ensure the vehicle is involved and the
campaign has not been previously completed.
Contact the Warranty Campaigns Department at (336) 889-4871, from 8:00 a.m. to 5:00 p.m. Eastern Time,
Monday through Friday, via Web inquiry at DTNAConnect and click the WSC link, if you have any questions or
need additional information.
All claims must be submitted within 30 days of the repair and within 30 days of the termination date of the
campaign. All excess inventories to be returned to the PDC following the conclusion of the campaign must be
returned in resalable condition to the Memphis PDC within 90 days from the termination date. Please submit a
PAR to request return to the Memphis PDC. (Canadian dealers should return the kits to their facing PDC.)

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AOctobv

Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A

Copy of Notice to Owners
Subject: TBB Saf-T- Liner C2 Entrance Door Welds
Daimler Trucks North America LLC (DTNA), on behalf of its wholly owned subsidiary, Thomas Built Buses (TBB),
is initiating Field Service Campaign SF539 to modify Specific Thomas Built Buses Saf-T-Liner C2 buses
manufactured March 1, 2007, through August 14, 2017.
On certain vehicles, the welds in the front leaf entrance door may crack.
New brackets will be installed.
To arrange for repairs, you should contact your local Thomas Built Bus dealer. The repair will take approximately
half an hour and will be performed at no charge to you. To find a dealer in your area please go to
www.thomasbus.com.
This Field Service Campaign will terminate on February 28, 2019. Please make sure the campaign is completed
prior to this date. Work completed after this date will be done at the customer’s expense.
As stated in the terms of your express limited warranty, Thomas Built Buses will not pay for any damage caused
by failure to properly maintain your vehicle. Thomas Built Buses considers the work necessary under this
campaign to be proper maintenance and will, therefore, not pay for any damage to your vehicle caused by your
failure to have the repairs that are the subject of this campaign performed in a reasonable time.
If you have any questions about this Field Service Campaign please contact the Warranty Department at
(336) 889-4871, 8:00 a.m. to 5:00 p.m. Eastern Time, Monday through Friday.

THOMAS BUILT BUSES WARRANTY DEPARTMENT
Enclosure

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AOctobv

Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A

Work Instructions
Subject: TBB Saf-T-Liner C2 Entrance Door Welds
Models Affected: Specific Thomas Built Buses Saf-T-Liner
C2 buses manufactured March 1, 2007, through August 14,
2017.
IMPORTANT: Read the entire procedure before beginning work.

Forward Leaf Entrance Door Bracket Installation
1) Chock wheels, set parking brake, make sure the shifter is in park or neutral, and the ignition switch is off.
2) Remove door mechanism cover and set aside, retain all fasteners.
3) Use the appropriate instructions for the type of door being repaired:
•
•

Pneumatic Doors, see page 4
Electric Doors, see page 7

Pneumatic Doors
1) Disengage the pneumatic cylinder by disconnecting the air supply line or by using the dump valve.
2) Remove the retaining push clip from the secondary linkage and discard. Retain the nylon washers for
reinstallation. See Figure 1 item A.
3) Remove the 3/8 in. bolt, nut, and washers from the rod end of the cylinder. Retain the bolt, nut, and washer for
reinstallation. See Figure 1 item B.
4) Remove all four 1/4 in. flange bolts that hold the existing bracket on the leaf. See Figure 1 item C. Discard the
bracket and retain the four 1/4 in. bolts.
5) Using a screw gun, loosen the forward leaf door seal. See Figure 1 item D.
6) Attach the new bracket (TBB 212671) to the forward leaf using the 1/4 in.-20 flange bolts removed earlier. Do
not tighten all the way down; you are using this as a template to mark/drill two holes.
7) Using the two holes in the flange of the bracket as shown in Figure 2 (drilling into the blind cavity only), with a
with a 1/4 in. drill bit, drill a hole in each of these two holes located inside the pivot door tube.
8) Remove the bracket from the front door leaf.
9) Using a 25/64 in. drill bit, increase the diameter of the holes.
10) Insert the two threaded inserts (TBB 69006172) in the two newly drilled holes.
11) Push each of the inserts until they are firmly seated against the door pilot tube. Using a nut sert tool, tighten the
inserts to a torque value of 5 lbf.ft. See Figure 3.

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Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A
B

D

C

A

Figure 1: Parts locations

Figure 2: New bracket as a drilling template

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AOctobv

Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A

Figure 3: Threaded insert locations
12) Install the new bracket (TBB 212671) on front door leaf using the original four 1/4 in. bolts (hand tighten the
bolts).
13) Install the two 1/4 in. countersink head bolts (TBB 69002183) in the two holes just drilled.
14) Torque all six bolts to 12 lbf.ft.
15) Tighten the forward leaf door seal.
16) With the door as near as possible to the closed position, using the field replacement bracket outer profile as a
guide, cut the existing lip of the door seal just installed as close as possible. See Figure 4.

Figure 4: Trace and cut views of the door seal

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AOctobv

Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A
17) Re-assemble the pneumatic cylinder with the new bracket using the 3/8” hardware removed earlier. See
Figure 5.
18) Re-assemble the secondary door linkage to the new bracket using the washers previously removed and using
the new retaining push clip (TBB 127680).

Figure 5: Pneumatic door reassembled with new bracket

19) Adjust the door for a minimum opening of 24 in., using current standards.
20) Operate door making sure adjustment is correct.
21) Reinstall the door mechanism cover.
22) Remove the chock from the wheels.

Electric Doors
1) Disengage the electric actuator by pulling the emergency release handle.
2) Remove the retaining push clip from the secondary linkage and discard. Retain the nylon washers for
reinstallation. See Figure 6 item A.
3) Remove the 3/8 in. bolt, nut, and washers from the rod end of the cylinder. Retain for reinstallation. See Figure
6 item B.
4) Remove all four 1/4 in. flange bolts that hold the existing bracket on the leaf. See Figure 6 item C. Discard the
bracket and retain the flange bolts for reinstallation.
5) Using a screw gun, loosen the forward leaf door seal. See Figure 6 item D.
6) Attach the new bracket (TBB 212671) to the forward leaf using the 1/4-20 flange bolts removed earlier. Do not
tighten all the way down; you are using this as a template to mark/drill two holes.
7) Using the two holes in the flange of the bracket as shown in Figure 2 (drilling into the blind cavity only), with a
with a 1/4 in. drill bit, drill a hole in each of these two holes located inside the pivot door tube.

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AOctobv

Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A

B

C
A

D

Figure 6: Connections to electric entrance doors

8) Remove the bracket from the front door leaf.
9) Attach the new bracket (TBB 212671) to the forward leaf using the 1/4-20 flange bolts removed earlier. Do not
tighten all the way down; you are using this as a template to mark/drill two holes.
10) Using the two holes in the flange of the bracket as shown in Figure 3 (drilling into the blind cavity only), with a
with a 1/4 in. drill bit, drill a hole in each of these two holes located inside the pivot door tube.
11) Remove the bracket from the front door leaf.
12) Using a 25/64 in. drill bit, increase the diameter of the holes.
13) Insert the two threaded inserts (TBB 69006172) into the two newly drilled holes.
14) Push each of the inserts until they are firmly seated against the door pilot tube. Using a nut sert tool, tighten the
inserts to a torque value of 5 lbf.ft. See Figure 3.
15) Install the new bracket (TBB 212671) on front door leaf using the original four 1/4 in. bolts (hand tighten the
bolts).
16) Install the two 1/4 in. countersink head bolts (TBB 69002183) in the two holes just drilled.
17) Torque all six bolts to 12 lbf.ft.
18) Tighten the forward leaf door seal.
19) With the door as near as possible to the closed position, using the field replacement bracket outer profile as a
guide, cut the existing lip of the door seal just installed as close as possible. See Figure 4.
20) Re-assemble the electric door to the new bracket using the 3/8” hardware removed earlier. See Figure 7.
21) Re-assemble the secondary door linkage to the new bracket using the washers previously removed and the
new retaining push clip (TBB 127680).

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AOctobv

Field Service Campaign

Daimler Trucks
North America LLC

September 2017
SF539A

Figure 7: Electric Door reassembled with new bracket

22) Adjust electric door for a minimum opening of 24 in., using current standards.
23) Operate the door to make sure it is adjusted properly.
24) Reinstall the door mechanism cover.
25) Remove the chock from the wheels.

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