SB26-052 Service Bulletin/Repair Instructions

26-052
DT12 PTO Upfit

FLA COE

FLB COE

FLD Conventional

Business Class

FLC 112 Conventional
Century Class Conventional

Argosy COE

Cargo

Columbia

122SD and Coronado
Business Class M2

> Cascadia

108SD/114SD

> New Cascadia
Freightliner

Service Bulletin
Description of Revisions: This bulletin replaces the version dated

11/15/2018. The DT12 PTO Installation Guide link has been

revised.
Overview

The DT12 transmission is available with a rear mounted PTO prep option. The option includes all the vehicle

wiring and transmission elements needed to support the PTO without the addition of the PTO hardware on the

transmission. Check the information in PartsPro MOD 362, to confirm the vehicle being fitted with the PTO was

ordered with the prep option.
WARNING

Mounting a PTO to a DT12 transmission is supported only for GHG17 vehicles. Adding a PTO to older

models, or current models that were not ordered with PTO or PTO prep, will not work or may function

incorrectly. Vehicle and transmission warranty will be affected by installing an unsupported option, and

could be dangerous.

The additional hardware needed to complete the installation includes the PTO, a transmission oil pump drive

shaft, and a selection of shims. All the required components are available as three separate kits:

• PTO assembly (includes the PTO service part)

• PTO installation kit (includes the bolts, seals, oil pump driveshaft assembly, and oil pump thrust plate)

• Oil pump shim kit (includes the five most common shims required)
NOTE: Some chassis air system components may also be required.
Installation Information

Transmission

The installation process includes removing the non-PTO oil pump cover and oil pump driveshaft, determining

the oil pump shim needed, and installing the PTO. For the procedure, log into www.DTNAConnect.com, under

My Applications select PSL (Power Service Literature), then select the Transmission category.
Chassis

The wiring is detailed in MOD 885 and in PartsPro for VINs spec’d with PTO and PTO prep.

The air system is detailed in MOD 372, MOD 46D, and in PartsPro for VINs spec’d with PTO. See Table 2 and

Table 3 for parts update and BOM reference information on installing the new equipment.
Mechanical

The PTO has length, speed, and pump requirements that need to be well understood by the equipment installer

and the customer. Inform the customer of the web-based information available on the DDCSN website, and

make sure they have access to the DT12 PTO Installation Guide (https://dtnacontent-dtna.prd.freightliner.

com/content/dam/public/DDCSN/EngineeringDocs/DT12%20PTO%20Installation%20Guide.pdf).
Freightliner Service Bulletin, 09/13/2019
Page 1
26-052
DT12 PTO Upfit
Freightliner

Service Bulletin
FLA COE

FLB COE

FLD Conventional

Business Class

FLC 112 Conventional
Century Class Conventional

Argosy COE

Cargo

Columbia

122SD and Coronado
Business Class M2

> Cascadia

108SD/114SD

> New Cascadia
Parameters

The parameters needed to make the PTO function are included in the order specifications, and no changes

should be required when the PTO is installed. However, if the customer requires changes to the parameters,

refer to GHG14/GHG17 DDEC13 Electronic Controls Application and Installation manual on the DDCSN website

for available options (https://dtnacontent-dtna.prd.freightliner.com/content/dtna-servicelit/ddc/en_us/

detroit-literature/detroit-a-i-manual/ghg14-17-ddec-electronic-controls-a-i-manual-ddc-svc-man0127.html?).
Parts

See Table 1, Table 2 and Table 3 for parts that are required to upfit a PTO to a vehicle equipped with the PTO

prep option. Parts can be ordered through the PDCs.
A

A

A

A

A

A

A
Transmission Parts

Part Number

Description

947 260 06 05

PTO, DT12, ASSEMBLY (1:1.32 ratio)

or

947 260 07 05

PTO, DT12, ASSEMBLY (1:1 ratio)

947 260 24 92

SHAFT, OIL PUMP, PTO INST, KIT, DT12 A

or

947 260 21 92

SHAFT, OIL PUMP, PTO INST, KIT, DT12 B

389 262 50 56

SHIMS, TRANS OIL PUMP, TOP 5, KIT

Optional (used for a driveline output from the PTO)

947 260 04 17

FLANGE, SPICER 1300, 89 PTO, KIT

or

947 260 03 17

FLANGE, SPICER 1400, 89 PTO, KIT
Qty.

1
1

1
1
Table 1, Transmission Parts
Part Number

23-13481-000

48-25855-010

SMCKV2L07 36S

D12-28174-000

D12-28175-000
Air System Parts (372-C01704 or similar)

Description

STRAP-TIE, ANTI-VIB, M6.3, FIR TR

TUBE-NYL 12, 1/4", BLACK

ELB-90, 1/4PC+3/8MPT, GRY

SCHEM-AIR PP,PTO SUPPLY,DT12

INSTALL-PTO AIR SUPPLY, DT12
Qty.

5

15 ft.

1

—

—
Table 2, Air System Parts (372-C01704 or similar)

Pressure Protection Parts (46D-D61401 or similar)

Part Number

Description

GTD 223 475

VALVE-PRESS PROTECTION, 75 PSI

23-14396-003

ELB-90,1/4 PTC X 3/8 MPT

23-14396-006

ELB-90,3/8 PTC X 3/8 MPT

23-14415-001

PLUG-1/4 PUSH TO CONNECT

D12-28174-000

SCHEM-AIR PP,PTO SUPPLY,DT12
Page 2
Qty.

1

1

1

1

—
Freightliner Service Bulletin, 09/13/2019
26-052
DT12 PTO Upfit

FLA COE

FLB COE

FLD Conventional

Business Class

FLC 112 Conventional
Century Class Conventional

Argosy COE

Cargo

Columbia

122SD and Coronado
Business Class M2

> Cascadia

108SD/114SD

> New Cascadia
Pressure Protection Parts (46D-D61401 or similar)

Part Number

Description

D12-28175-001

INSTALL-PTO PREP KIT, DT12
Freightliner

Service Bulletin
Qty.

—
Table 3, Pressure Protection Parts (46D-D61401 or similar)
VIN Update

Record the changes to the VIN information, using the global annotation tool on PartsPro. Refer to Parts

Technical Bulletin 00-009 for the global annotation procedure, and add a note with the number and name for

this bulletin (26-052), so the next location performing service will understand what changes have been made to

the vehicle.
Service Parts

Use the information in Fig. 1 and Table 4 to identify additional parts and service information, beyond what is

required for the PTO installation. Since the PTO was not factory installed, this information will not be available in

PartsPro by searching the VIN.
Ref No. *

82

83

84

85

89

90

91

93

94

95

96

97

98

99

100

101

102

103

104

106

107

108
Service Parts—PTO (342-C93063 or similar)

Part Number

Description

004 998 21 50

PLUG (M12X1.5)

947 267 00 76

SEAL

029 997 89 45

SEAL-PTO OUTPUT

013 994 29 41

CIRCLIP-INTERNAL

947 250 00 54

FITTING-AIR (-4 PTC HOSE)

947 540 00 97

SWITCH

000 990 12 80

COVER-FLANGE, SAE B

947 268 00 27

STUD-DRIVE FLANGE

016 990 46 82

SPACER-DRIVE FLANGE

DDE N910112008000 NUT

947 260 00 55

FLANGE-SPICER 1300

947 260 01 55

FLANGE-SPICER 1400

947 264 02 80

GASKET-PTO/TRANS

029 997 72 45

O-RING-PTO/TRANS

947 260 26 92

SHAFT, OIL PUMP DRIVE, W/ PTO,

DT12 A

947 260 25 92

SHAFT, OIL PUMP DRIVE, W/ PTO,

DT12 B

947 260 05 17

BEARING-PTO INPUT

947 265 00 36

CIRCLIP-EXTERNAL

947 260 01 52

PLATE-OIL PUMP COVER

DDE N910143010014 SCREW (MI0X35-10.9)

947 260 13 57

VLV-ELEC, KIT W/ SEALS/ PTO

947 260 04 17

FLANGE-SPICER 1300, 89 PTO, K

947 260 03 17

FLANGE-SPICER 1400, 89 PTO, K
Freightliner Service Bulletin, 09/13/2019
Qty.

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

5

1

1

1
Page 3
26-052

Freightliner

Service Bulletin
Ref No. *

109

111

129

207
DT12 PTO Upfit

FLA COE

FLB COE

FLD Conventional

Business Class

FLC 112 Conventional
Century Class Conventional

Argosy COE

Cargo

Columbia

122SD and Coronado
Service Parts—PTO (342-C93063 or similar)

Part Number

Description

947 260 21 92

SHAFT-OIL PUMP, PTO INST, KIT

389 262 38 56

SHIM-OIL PUMP

000912 010219

SCREW SOCKET-HEAD (M10X35, 10.

947 264 01 07

PNEUMATIC VALVE PLATE
Business Class M2

> Cascadia

108SD/114SD

> New Cascadia
Qty.

1

1

2

1
* See Fig. 1.
Table 4, Service Parts
Page 4
Freightliner Service Bulletin, 09/13/2019
26-052
DT12 PTO Upfit

FLA COE

FLB COE

FLD Conventional

Business Class

FLC 112 Conventional
Century Class Conventional

Argosy COE

Cargo

Columbia

122SD and Coronado
Freightliner

Service Bulletin
Business Class M2

> Cascadia

108SD/114SD

> New Cascadia
103
109
98
82

83
99
89
100

102
101
106
207

90
107

96
94
84
93
85

91
95

97

108

08/29/2019
81

f261523
NOTE: Refer to Table 4 for part numbers, descriptions, and quantities.

Fig. 1, Service Parts—PTO (342-C93063 or similar)
Warranty

This is an informational bulletin only. Warranty does not apply.
Freightliner Service Bulletin, 09/13/2019
Page 5

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