18SP729Rev –Three-Filter Fuel
System DD15/16 High Pressure Fuel Feed
Lines, Mounting Bracket and P-clips Service Kit (P/N:
A0000701532)

PERSONAL INJURY
All parts provided within this kit MUST be installed in the proper locations, and
MUST be fastened to the specified torque. Failure to properly torque
hardware/components will result in failure of a high pressure fuel feed line, resulting
in possible fire and/or personal injury.

PERSONAL INJURY
All parts provided with this kit, and those they are replacing on the engine, function
as a complete system and are single-use items. The old parts cannot be reused.
Reusing parts or failing to use all new parts contained in the kit may result in the
failure of high pressure fuel lines, possibly resulting in a fire.

18SP729Rev. Page 1 of 19

NOTICE: Failure to follow these instructions will result in catastrophic damage to
the engine and will not be covered under warranty.
KIT DESCRIPTION
This service kit includes all necessary parts to replace the high pressure fuel rail feed
lines, mounting bracket, P-clips and mounting hardware in the event one of these parts are
loosened, removed or missing from the engine.
KIT CONTENTS
Service kit P/N: A0000701532 contains all of the necessary parts to replace the high
pressure fuel feed lines on three-filter fuel system DD15/16 engines.
Part No.
A4720780310
A4720700540
N000000007957
N910105006024
N910105008011
A4730700440
A4720701040
18SP729

Qty.
2
2
2
1
2
1
1
1

Description
High pressure fuel feed line
P-Clip
Bolt M6x12mm
Bolt M6x20mm
Bolt M8x20mm
Return lines triple-clip
Mounting bracket
Installation Instructions

18SP729Rev. Page 2 of 19

Removal of the High Pressure Fuel Rail Feed Lines Three-Filter System
Remove as follows:
NOTICE: The high pressure fuel rail feed lines, vibration
dampers, P-clips, mounting bracket and hardware are one-time
use components and MUST be replaced any time they are
removed or loosened. Refer to TS letter 16 TS-9 Rev2
(http://dtna.info/16ts9) for the high pressure fuel line kit
numbers.

PERSONAL INJURY
To prevent the escape of high pressure fuel that can penetrate skin, ensure the engine
has been shut down for a minimum of 10 minutes before servicing any component
within the high pressure circuit. Residual high fuel pressure may be present within the
circuit.

18SP729Rev. Page 3 of 19

Engines with a serial number before 472901S0012796
Item

Component

1

Mounting bracket

2

Mounting bracket bolts

3

Return lines P-clip and bolt

4

Vibration dampers and bolts

5

High pressure fuel feed lines

6

P-clips and bolts

18SP729Rev. Page 4 of 19

Engines with a serial number after 472901S0012796
Item

Component

1

Mounting bracket

2

Mounting bracket bolts

3

Return lines P-clip and bolt

4

Vibration dampers and bolts (Or permanent)

5

High pressure fuel feed lines

6

P-clips and bolts

1. Shut off the engine, apply the parking brake, chock the wheels, and perform any
other applicable safety steps.

ELECTRICAL SHOCK
To avoid injury from electrical shock, use care when disconnecting battery cables.
The magnetic switch studs are at battery voltage.
2. Disconnect the batteries.
3. Open the hood.
4. If necessary, remove the bumper. Refer to the Original Equipment Manufacturer
(OEM) procedures.
5. If necessary for access, remove the air cleaner. Refer to the (OEM) procedures.
6. Remove and discard the return lines P-clip bolt from the mounting bracket (1).

18SP729Rev. Page 5 of 19

NOTE: The graphic below illustrates the DD15/16 engines with a serial number
before 472901S0012796.

18SP729Rev. Page 6 of 19

NOTE: The graphic below illustrates a DD15/16 engines with a serial number after
472901S0012796 and all DD13 engines.

NOTE: The graphic below illustrates DD engines with permanent vibration dampers
on the high pressure fuel rail feed lines.

7. Remove and discard the two P-clip bolts from the mounting bracket.
8. Remove and discard the mounting bracket bolts (2) from the intake manifold and
discard the mounting bracket (1).

18SP729Rev. Page 7 of 19

NOTE: When removing the high pressure fuel rail feed lines, hold the high pressure
pump fitting with a 24mm wrench. If the high pressure pump fittings are loosened
while removing the high pressure fuel rail feed lines, re-torque the fittings to 75 N·m
(55 lb·ft).
9. For high pressure fuel rail feed lines with bolted vibration dampers, remove and
discard the high pressure fuel rail feed lines (5), vibration dampers (4), and P-clips
from the fuel rail and high pressure fuel pump. For high pressure fuel rail feed lines
with permanent vibration dampers, remove and discard the high pressure fuel rail
feed lines (4), vibration dampeners, and P-clips (5) from the fuel rail and high
pressure fuel pump.
10. Remove and discard the return lines triple-clip (3).

18SP729Rev. Page 8 of 19

Installation of the DD15 and DD16 High Pressure Fuel
Rail Feed Lines - Three-Filter System
Install as follows:
NOTE: New high pressure fuel rail feed lines have permanent vibration dampers.
NOTICE: The high pressure fuel rail feed lines, vibration
dampers, P-clips, mounting bracket and hardware are one-time
use components and MUST be replaced any time they are
removed or loosened. Refer to TS letter 16 TS-9 Rev2
(http://dtna.info/16ts9) for the high pressure fuel line kit
numbers.
NOTE: DO NOT install bolts and fittings using power tools. All bolts and fittings
MUST be installed using hand tools.

PERSONAL INJURY
All hardware/components MUST be installed in the proper locations, and MUST be
fastened to the specified torque. Failure to properly torque hardware/components will
result in failure of a high pressure fuel feed line, resulting in possible fire and/or
personal injury.

18SP729Rev. Page 9 of 19

Item
1
2
3
4
5

Component
Mounting bracket
Mounting bracket bolts
Return lines P-clip and bolt
High pressure fuel feed lines
P-clips and bolts

Part number
A4720701040
N910105008011
A4730700440 and N910105006024
A4720780310
A4720700540 and N000000007957

1. Install new return lines triple-clip (3) onto the return lines.

18SP729Rev. Page 10 of 19

NOTE: The graphic below illustrates the DD15/16 engines with a serial number
before 472901S0012796.

NOTE: The graphic below illustrates a DD15/16 engines with a serial number after
472901S0012796 and all DD13 engines.

18SP729Rev. Page 11 of 19

NOTE: The graphic below illustrates DD engines with permanent vibration dampers
on the high pressure fuel rail feed lines.

2. Clean the sealing area inside the high pressure fuel pump outlet fittings using a
clean lint-free cloth. The photo shown below is of KM59 GEN1 High Pressure Fuel
Pump Fittings.

18SP729Rev. Page 12 of 19

3. Clean the sealing area inside the high pressure fuel rail using a clean lint-free cloth.
The photo shown below is of KM59 GEN1 high pressure fuel rail fittings.

NOTE: New P-clip MUST be installed onto the high pressure fuel rail feed lines
with the lower P-clip plate (1) inserted into the P-clip window (2); see graphic below.

18SP729Rev. Page 13 of 19

4. Install both of the new P-clips, one each, onto the high pressure fuel rail feed lines;
see graphic below.

NOTE: DO NOT use new high pressure fuel rail feed lines that do not have new
vibration dampers installed.
5. Position the rear high pressure fuel rail feed line into the fuel rail and the high
pressure fuel pump. Do not start the threads of the fuel line nuts at this point.
6. Position the front high pressure fuel rail feed line into the fuel rail and the high
pressure fuel pump. Do not start the threads of the fuel line nuts at this point.

18SP729Rev. Page 14 of 19

7. Install the new mounting bracket (1) and two new mounting bracket bolts (2) to the
fuel rail clamp. Hand-tighten the mounting bracket bolts all the way until the
bracket and bolts are flush. Do not torque at this time.

NOTE: New P-clips (2) MUST be installed perpendicular to the bracket (1) and
parallel with each other. Hold P-clips in place during tightening to avoid rotation of
the P-Clips; see graphic below.

18SP729Rev. Page 15 of 19

8. Ensure the rear high pressure fuel rail feed line is in place so that the p-clip
mounting hole lines up with the bracket nut. No excessive force should be applied
to any components in the high pressure fuel rail feed lines kit when assembling
them loosely.
9. Install the new rear P-clip bolt hand tight. Do not torque at this time.
10. Hand-tighten the rear high pressure fuel rail feed line starting with the rail side nut
first, and then the nut at the high pressure fuel pump.
NOTICE: After torqueing each fuel line nut, P-clip bolt, mounting bracket bolt, and
return line triple-clip bolt, mark the fittings and fasteners with a paint pen. Draw a
line with the paint pen on the fitting or fastener and the adjacent metal as shown in the
photograph below. The photograph shown below is of the KM63 fuel system, the
three-filter fuel system is similar.

18SP729Rev. Page 16 of 19

PERSONAL INJURY
All parts provided within this kit MUST be installed in the proper locations, and
MUST be fastened to the specified torque. Failure to properly torque
hardware/components will result in failure of a high pressure fuel feed line, resulting
in possible fire and/or personal injury.
11. Using fuel line socket W314589010300 or a commercially available 19mm fuel line
socket, torque the rear high pressure fuel rail feed line nuts to 40 N·m (30 lb·ft)
starting with the rail side nut first, and then the nut at the high pressure fuel pump.
Using a paint pen, draw a paint line on the torqued fuel line nut and the adjacent
metal, as shown in the photograph above.
12. Ensure the front high pressure fuel rail feed line is in place so that the p-clip
mounting hole lines up with the bracket nut. No excessive force should be applied
to any components in the high pressure fuel rail feed lines kit when assembling
them loosely.
13. Install the new front P-clip bolt hand tight. Do not torque at this time.
14. Hand-tighten the front high pressure fuel rail feed line starting with the rail side nut
first, and then the nut at the high pressure fuel pump.
15. Using fuel line socket W314589010300 or a commercially available 19mm fuel line
socket, torque the front high pressure fuel rail feed line nuts to 40 N·m (30 lb·ft)
starting with the rail side nut first, and then the nut at the high pressure fuel pump.
Using a paint pen, draw a paint line on the torqued fuel line nut and the adjacent
metal, as shown in the photograph above.

18SP729Rev. Page 17 of 19

NOTE: New P-clips (1) MUST be installed perpendicular to the bracket (2) and
parallel with each other. Hold P-clips in place during tightening to avoid rotation of
the P-Clips.

16. Torque the two new high pressure fuel rail feed line P-clip bolts to 14 N·m (124
lb·in.). Using a paint pen, draw a paint line on the torqued bolt head and the
adjacent metal, as shown in the notice after step 10.
17. Torque the two new mounting bracket bolts to 30 N·m (22 lb·ft). Using a paint pen,
draw a paint line on the torqued bolt head and the adjacent metal, as shown in the
notice after step 10.
18. Install the bolt for the amplification, needle, and pressure limiting valve return line
triple-clip (1). Torque to 14 N·m (124 lb·in.). Using a paint pen, draw a paint line
on the torqued bolt head and the adjacent metal, as shown in the notice after step
10.
19. Inspect all components of the high pressure fuel rail feed line kit to make sure all
fittings and fasteners have been properly installed, torqued and marked with a paint
pen. Have the lead hand or supervisor review the installation and sign off on the
repair order to ensure that all components were properly torqued and painted.
20. If removed for access, install the air cleaner. Refer to the Original Equipment
Manufacturer (OEM) procedures.

18SP729Rev. Page 18 of 19

ELECTRICAL SHOCK
To avoid injury from electrical shock, use care when disconnecting battery cables.
The magnetic switch studs are at battery voltage.
21. Connect the batteries.
22. Prime the fuel system. Refer to section "Priming the Fuel System - Three-Filter
System".
23. Perform the Rail Pressure Bleed-Off test to verify that there are no leaks.
Refer to section "Rail Pressure Bleed Off Test Using DiagnosticLink® Standard
(EPA07 and EPA10) - Three-Filter Fuel System" .
24. If there are leaks, find the leak and repair, as necessary.
25. If necessary, install the bumper. Refer to the Original Equipment Manufacturer
(OEM) procedures.
26. Close the hood.

Specifications are subject to change without notice. Detroit Diesel Corporation is registered to ISO 9001:2008.
Copyright © Detroit Diesel Corporation. All rights reserved. Detroit™ is a brand of Detroit Diesel Corporation,
a Daimler company.
18SP729Rev. 1906 As technical advances continue, specifications will change. Printed in U.S.A.

18SP729Rev. Page 19 of 19