ENP-736 – Emer™ PRD Replacement for ElDorado National Bus CNG Fuel Systems – Agility

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Emer™ PRD Replacement for 

ElDorado National Bus 

CNG Fuel Systems

ENP-736 REV A

June 25, 2020

 

1. Introduction

Agility Fuel Solutions LLC (Agility®) has determined that pressure relief devices (PRDs) manufactured by Emer™ may fail to operate as designed. This issue has been reported to the National Highway Traffic and Safety Administration (NHSTSA Recall No. 20E-019). Impacted parts include Emer™ p/n PRD2302T-004 (Agility® p/n 10306997) used in Agility® compressed natural gas (CNG) fuel systems produced from October 6, 2016, to April 1, 2020.

PRDs are essential for safe vehicle operation and must be replaced if non-compliant. Agility® personnel have identified fuel system top level part numbers supplied for ElDorado National -California buses containing recalled Emer™ PRDs as original equipment manufacturer (OEM) equipment.

Agility® created this instructional document to guide trained CNG fuel system service technicians in the removal, replacement, and reporting of affected Emer™ PRDs.

 

1.1. Warning Messages and Symbols used in this document

 

DANGER

Will cause death or severe injuries if procedures are not followed.  

 

WARNING

Could cause death or severe injuries if procedures are not followed.

 

CAUTION

Could cause minor or moderate injuries if procedures are not followed.

 

NOTICE

Practices not related to physical injury. Includes procedures to prevent vehicle damage as well as hints to help an operation or procedure go smoothly.

  • A product feature solely used to improve manufacturability or maintain process control · 
  • A process parameter or step that has a significant effect on achieving a Critical Characteristic

            or Significant Characteristic, or maintaining material identification/traceability.

             

2. Affected Units

Agility® top level system part numbers as follows:

240329-01 – Roofpack, Front 240329-02 – Roofpack, Rear
240329-03 – Roofpack, Front 240329-04 – Roofpack, Rear
240329-05 – Roofpack, Rear 240329-06 – Roofpack, Rear
240329-08 – Roofpack, Rear 240329-11 – Roofpack, Rear

 

3. Tools and Supplies Required

Fall protection equipment Safety glasses
Safety ladder Defueling hose with nozzle**
NGV1 fuel receptacle adapter* Microfiber towels
Swagelok® preswage tool 7/8-in. combination wrench
1-in. combination wrench, short† 1 1/8-in. combination wrench, short†
Camera / phone camera Flashlight
Parker® O-lube O-ring lube Foam mat or tarp
Socket wrenches Swagelok® Snoop® leak detection solution
Permanent marker Agility® reporting form FT.0313
Torque Seal marker Agility go-nogo gauge, p/n TD 400394
Heat gun Zip lock bag (NOTE: supplied by Agility with bulk replacement PRD shipment—use for
Blue paint marker PRD return)

 

*may be required for defueling on some FMMs 

**If not provided at CNG fueling facility                

If short wrenches are unavailable, cut the open end of wrenches down to 6-in. long.

 

3.1. PRD retrofit kits

Before beginning work, verify proper quantity of correct Agility® PRDs are on hand. 

Agility® PRD p/n 10306997 and corresponding fuel system quantities are as follows:

Agility® fuel system p/n PRD QTY required
240329-01 4
240329-02 4
240329-03 4
240329-04 4
240329-05 4
240329-06 4
240329-08 2
240329-11 2

 

4. Parts Location Identification

Refer to the appropriate fuel system illustration to locate the affected Emer™ PRDs in fuel system plumbing. Figures 1, 2 and 3

Figure 1.

Locations of Emer™ PRDs (1) in front pod fuel system cylinder plumbing. NOTE: Roof pack doors omitted for clarity.

 

Figure 2.

Locations of Emer™ PRDs (1) in rear fuel system plumbing – three and four cylinder pods. NOTE: Cylinders not shown for clarity.

Figure 3.

Locations of Emer™ PRDs (1) in rear fuel system plumbing – two cylinder pods. NOTE: Cylinders not shown for clarity.

 

5. Corrective Action / Procedure

5.1. Preliminary Safety Preparation

See PDF Bellow



ENP-736 REV A

Remedy Instructions and TSB

RCRIT-20E019-1325.pdf 2283.888KB

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ENP-736

Remedy Instructions and TSB

RCRIT-20E019-3666.pdf 1061.11KB

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“This site contains affiliate links for which OEMDTC may be compensated”
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