18SP708Rev – EPA07/10 Three-Filter Fuel
System DD15/16 High Pressure Fuel Feed
Lines, Mounting Bracket and P-clips Service Kit
(P/N: A0000701132)

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 are single-use items and cannot
be reused. Reuse of hardware/component items may result in
the failure of a high pressure fuel line, resulting in possible fire
and/or personal injury.

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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 feed
lines, mounting bracket and P-clips in the event one of these parts are loosened,
removed or missing from the engine.
KIT CONTENTS
Service kit P/N: A0000701132 contains all of the necessary parts to replace the
high pressure fuel feed lines on EPA07/10 DD15/16 engines.
Part No.
A4720780310
A4720700540
N000000007957
N910105006024
N910105008011
A4730700440
A4720701040
18SP708Rev

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 P-clip
Mounting bracket
Installation Instructions

Removal of the High Pressure Fuel Rail Feed Lines
Remove as follows:

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 pressure fuel may be present
within the circuit.

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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

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Engines with a serial number after 472901S0012796
Item
1
2

Component
Mounting bracket
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

1. Disconnect the batteries.
2. Remove and discard the return lines P-clip bolt from the mounting bracket (1).
3. Remove and discard the two bolts and P-clips (6) from the mounting bracket (1).
4. Remove and discard the mounting bracket bolts (2) from the intake manifold and
discard the mounting bracket (1).
NOTE:
When using tool J-48770 to remove the high pressure fuel rail feed lines, hold the high
pressure pump fittings with a 24mm wrench. If the high pressure pump fittings loosen while
removing the high pressure fuel rail feed lines, re-torque the fittings to
75 N·m (55 lb·ft).
5. Using tool J-48770, remove and discard the high pressure fuel rail feed lines
(5) and vibration dampers (4) from the fuel rail and high pressure fuel pump.
6. Remove and discard the return lines P-clip (3).
18SP708Rev Page 4 of 9

Installation of the High Pressure Fuel Rail Feed Lines
Install as follows:
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.

NOTE:
New high pressure fuel rail feed lines have permanent vibration dampers.

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

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1. Install the new return lines P-clip (3) (P/N: A4730700440) on to the return lines.
2. Clean the sealing area inside the high pressure fuel pump fittings using a clean
lint-free cloth.

3. Clean the sealing area inside the high pressure fuel rail using a clean lintfree cloth.

4. Install the rear high pressure fuel line (5) (P/N: A4720780310) to the fuel rail and
the high pressure fuel pump. Hand-tighten the nuts.
5. Using tool J-48770, torque the rear high pressure fuel line nuts to
40 N·m (30 lb·ft).

18SP708Rev Page 6 of 9

6. Install the front high pressure fuel line (5) (P/N: A4720780310) to the fuel rail
and the high pressure fuel pump. Hand tighten the nuts.
7. Using tool J-48770, torque the front high pressure fuel line nuts to
40 N·m (30 lb·ft).
8. Install the new mounting bracket (1) (P/N: A4720701040) and two new mounting
bracket bolts (2) (P/N: N910105008011) to the intake manifold. Torque to 30 N·m
(22 lb·ft).

NOTICE:
New P-clip MUST be installed on to the high pressure fuel rail feed lines with the
Lower P-clip Plate (1) inserted in to the P-clip Window (2).

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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.

9. Install two new P-clips (6) (P/N: A4720700540) and two new bolts (P/N:
N000000007957) on to the high pressure fuel rail feed lines (5) and the
mounting bracket (1). Torque to 15 N·m (132 lb·in.).
10. Install a new bolt (P/N: N910105006024) on to the return lines P-clip. Torque to
15 N·m (132 lb·in.).

NOTICE:
DO NOT use the high pressure fuel rail feed lines without new P-clips and
bolts installed.

ELECTRICAL SHOCK
To avoid injury from electrical shock, use care when connecting
battery cables. The magnetic switch studs are at battery voltage.

11. Connect the batteries.

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12. Prime the fuel system. Refer to section "Priming of the Fuel System Using ESOC
350 Fuel Priming Pump."
13. Perform the Rail Pressure Bleed-Off test to verify that there are no leaks.
Refer to section "Rail Pressure Bleed-Off Test Using DDDL (EPA07)."
Refer to section "Fuel Injection System (FIS) Leak Detection (EPA10)."
14. If there are leaks, find the leak and repair as necessary.

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.
18SP708Rev 1411 As technical advances continue, specifications will change. Printed in U.S.A.

18SP708Rev Page 9 of 9