Procedure to Repair the Pump for the Aftertreatment Regeneration Device (ARD) {1258} Caterpillar

Articulated Truck

725C (S/N: TFB1-UP)

730C (S/N: TFF1-UP)

730C EJECTOR (S/N: TFH1-UP)

735C (S/N: TFJ1-UP)

740C EJECTOR (S/N: TFN1-UP)

745C (S/N: TFK1-UP)

Engine

C13 (S/N: N3F1-UP; T4F1-UP; KWJ1-UP; M4X1-UP)

C15 (S/N: JJF1-UP; N5F1-UP; ENG1-UP; LDN1-UP; L4X1-UP; TXY1-UP)

C18 (S/N: N8F1-UP; BDN1-UP; RDP1-UP)

Excavator

336E (S/N: TEG1-UP; GTJ1-UP; YEP1-UP; TMZ1-UP)

Industrial Engine

C13 INDUSTRIAL (S/N: RRA1-UP)

C9.3 (S/N: CS91-UP; MME1-UP; SSE1-UP; SYE1-UP; C9N1-UP)

Landfill Compactor

836K (S/N: TWZ1-UP)

Motor Grader

12M Series 3 (S/N: N9P1-UP; N9R1-UP)

140M Series 2 (S/N: M9D1-UP; R9G1-UP; M9J1-UP; R9M1-UP)

140M Series 3 (S/N: N9G1-UP; N9M1-UP)

14N (S/N: N9X1-UP)

160M Series 2 (S/N: M9E1-UP; M9K1-UP; R9L1-UP; R9T1-UP)

160M Series 3 (S/N: N9L1-UP; N9T1-UP)

16M Series 3 (S/N: N9Y1-UP)

Off-Highway Truck/Tractor

770G (S/N: RMA1-UP; KDH1-UP)

772G (S/N: RME1-UP; KEX1-UP)

Road Reclaimer/Soil Stabilizer

RM-500 (S/N: ASW1-UP)

Track-Type Tractor

D6T (S/N: KSB1-UP; ZJB1-UP; DTD1-UP; SLJ1-UP; GMK1-UP; KMR1-UP; WES1-UP; RCW1-UP; TMY1-UP; HTZ1-UP)

D7E (S/N: HKA1-UP; SSH1-UP; TAN1-UP)

D8T (S/N: AW41-UP; FMC1-UP)

D9T (S/N: REX1-UP)

Wheel Dozer

834K (S/N: TWY1-UP)

Wheel Loader

966M (S/N: KJP1-UP)

972M (S/N: A8P1-UP)

980M (S/N: KRS1-UP)

982M (S/N: K1Y1-UP)

988K (S/N: TWX1-UP)

Wheel Tractor-Scraper

621K (S/N: WTA1-UP)

627K (S/N: WTC1-UP)

631K (S/N: WTR1-UP)

637K (S/N: WTS1-UP; WTT1-UP; WTX1-UP)

Introduction

Do not perform any procedure that is outlined in this publication until you understand the information that is contained in this document.

Safety

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Contact with high-pressure fuel may cause personal injury or death. Wait 60 seconds after the engine has stopped to allow the fuel pressure to purge before any service is performed on the fuel lines.

Cleanliness

Required Parts

Procedure

Use the following procedure to install the fuel priming pump assemblies listed above for the particular applications.

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Illustration 1	g02138690

1. Disconnect the fuel line (1) to the ARD manifold from both ends.
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   Illustration 2	g02140391

2. Disconnect the solenoid harness (2).
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   Illustration 3	g02139134

3. Remove the three 6V-8359 Bolts (3) from the manifold.
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   Illustration 4	g02139144

4. Remove the manifold (4).
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   Illustration 5	g02138698

5. Remove the two 6D-5801 Locknuts (5).
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   Illustration 6	g02497957
   Electronic interference filter

6. Some pumps are equipped with an electromagnetic interference (EMI) filter. Remove the EMI filter, if equipped. Refer to Illustration 6.
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   Illustration 7	g02237977

7. Write down the polarity and remove the wires from the terminal studs. The polarity (6) is designated by “+” and “-” signs on the face of the pump body.
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   Illustration 8	g02139164

8. Remove the 205-9169 Seal (7).
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   Illustration 9	g02238120

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   Illustration 10	g02498036

9. Remove the wires (8) from the pump terminals. Use a pair of pliers to grasp the pump assembly (9). Rotate the pump a quarter turn back and forth while pulling the pump out of the housing. Refer to Illustration 10.
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   Illustration 11	g02238717
   345-8046 Fuel Pump Gp

10. Ensure that the two 173-1016 Backup Rings (10) that are provided in the kit are also removed. Also, ensure that the 188-7536 Seal (11) and the 188-7541 Seal (12) are removed.
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    Illustration 12	g02238719
    (13) Proper orientation of the pump

11. Use 361-3641 Pump Installer that is provided in the kit to press in the new pump and seals. Lubricate the seals with 8T-2998 Lubricant to assist with the installation.

    Note: The outlet of the pump should be at the top center position.

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    Illustration 13	g02236093

12. Reinstall the wires on the terminal studs in the same polarity. Refer to Step 7. Install new 6D-5801 Locknuts (5). Torque locknuts to 1.3 N·m (1 lb ft). Ensure that the wire terminals do not touch each other after the locknuts have been tightened.

    Note: Use caution when applying torque to the new 6D-5801 Locknuts (5). The stud is made of brass and will break if the torque value is exceeded. An over torque will take place if the nut is seated and rotated beyond 1/8 turn.

13. Reinstall the EMI filter, if equipped.
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    Illustration 14	g02139309

14. Install a new 205-9169 Seal on the manifold (4). Reinstall the manifold.
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    Illustration 15	g02139311

15. Reinstall the three 6V-8359 Bolts (3). Torque the bolts to 12 ± 3 N·m (9 ± 2 lb ft).
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    Illustration 16	g02138801

16. Replace the 341-3150 Filter Connector As (13). Tighten the fittings (10) and (11) to a torque of 17 ± 1 N·m (150 ± 9 lb in).
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    Illustration 17	g02139316

17. Reconnect the solenoid harness (2) and the fuel line (1) to the ARD at both ends.

18. After reassembly, prime the engine by turning on the key or pressing the manual switch. The manual switch, if available, is located on the primary fuel filter base. Visually check for leaks around the pump and around the connections on the ARD manifold. If leaks are observed, resolve the leak issue before proceeding further.