TSB-019 Service Bulletin/Repair Instructions

SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

Bulletin No.:
TSB-019
Date:
March 9, 2016
Subject:
ITT Regulator Replacement
Models:
All Quantum Fuel Storage Modules with ITT Regulators
Background

Some Quantum fuel storage modules (FSMs) are built and supplied with ITT pressure regulators as part

of the fuel storage module.
Condition

In some cases, the High Pressure Regulator (HPR) may experience gas leakage which can be observed

escaping through the vent hole on the regulator.
Cause

Contaminates within the fuel may attack the diaphragm in the regulator which may result in a fuel leak.
Correction

Replacement regulators have diaphragms with new material which is designed to be more resistant to oil

and contaminates which may be present in the fuel.
Labor Time

Gen 1 BOC Units:

Gen 2 BOC Units:

Gen 1, 2 Frame Units:

Gen 3 Frame Units:
Labor Time – 1.1 Hours, Labor Operation BM1001

Labor Time – 1.4 Hours, Labor Operation BM2001

Labor Time – 1.8 Hours, Labor Operation FM1001

Labor Time – 1.3 Hours, Labor Operation FM3001
Contact Information:

E-Mail: [email protected]

Phone: 800.816.8691

Fax:

949.930.3401
3/9/2016 Revision A
1
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

Parts Information

Application
Old Regulator #
New Regulator #
BOC Gen 1
HPNGV48357 (116607)

HPNGV48362-2 (117100)

HPNGV48362-4 (117216)
HPNGV48362-5 (117649) New

HPNGV48362-8 (117645) Reman
BOC Gen 2
HPNGV48362-1 (116533)
HPNGV48362-6 (117644) New

HPNGV48362-9 (117650) Reman
Frame Gen 1, 2
HPNGV48357 (116607)

HPNGV48362-2 (117100)

HPNGV48362-4 (117216)
HPNGV48362-5 (117649) New

HPNGV48362-8 (117645) Reman
Frame Gen 3
HPNGV48362-3 (115917)
HPNGV48362-7 (117643) New

HPNGV48362-8 (117645) Reman
3/9/2016 Revision A
2
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

Removal Procedure
CNG is extremely flammable. If something ignites it, you could be severely burned.

Keep sparks, flames and ignition sources a minimum of 5 meters from CNG.

Ensure work area is well ventilated.

Always wear proper eye and hearing protection when working with pressurized gas.

Use explosion proof drop lights when working on gaseous fueled systems.

Failure to follow these basic safety guidelines could result in death or serious injury.
1. Close the fuel cylinder valves on all fuel storage

modules (FSMs).
2. Remove any covers, as needed, to access the

HPR assembly in the fuel storage module:

a. BOC Gen 1 – the HPR is accessible from

the bottom of the unit.
BOC Generation 1
3/9/2016 Revision A
3
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

b. BOC Gen 2 – the rear lower service panel

must be removed for access.
BOC Generation 2
c.
Frame Mount Gen 1 & 2 – the top cover

must be removed for access.
Frame Generation 1 & 2
d. Frame Mount Gen 3 – remove the lower

service access panel.
Frame Generation 3
3/9/2016 Revision A
4
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN
Vent the fuel system pressure to atmospheric levels before servicing. Failure to relieve

system pressure may result in serious personal injury and / or system damage.

3. Vent the fuel system. Refer to the System Venting

procedure in the maintenance manual for this

module.
4. Purge the fuel system. Refer to the Fuel System

Purge procedure in the maintenance manual for this

module.

5. Disconnect the electrical connector from the

pressure sensor.
BOC Generation 1 Shown

Other FSMs similar
6. Disconnect the electrical connector from the shutoff

valve.
3/9/2016 Revision A
BOC Generation 1 Shown

Other FSMs similar
5
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

7. Using a back-up wrench, disconnect the PRD

vent line from the fitting on the regulator.
BOC Generation 1 Shown

Other FSMs similar
8. Using a back-up wrench, disconnect the high

pressure inlet line from the fitting on the regulator.
BOC Generation 1 Shown

Other FSMs similar
9. BOC Gen 2 – Go to next step.

Remove and retain the high pressure inlet fitting.

Remove and discard the O-Rings.
BOC Generation 1 Shown

Other FSMs similar
3/9/2016 Revision A
6
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

10. Using hose clamp pliers, pinch both coolant lines.

Disconnect both coolant lines from the regulator.
BOC Generation 1 Shown

Other FSMs similar
11. Using a back-up wrench, disconnect the low

pressure outlet line from the fitting on the regulator.
BOC Generation 1 Shown

Other FSMs similar
12. Remove and retain the low pressure outlet fitting.

Remove and discard the O-Ring.
BOC Generation 1 Shown

Other FSMs similar
3/9/2016 Revision A
7
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

13. Remove and retain two regulator mount bolts.
BOC Generation 1 Shown

Other FSMs similar
14. Remove the regulator.
15. Record the serial number of the removed unit and

the new unit on the invoice.
3/9/2016 Revision A
8
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

Installation Procedure
CNG is extremely flammable. If something ignites it, you could be severely burned.

Keep all sparks, flames, and ignition sources a minimum of 5 meters from CNG.

Ensure work area is well ventilated.

Always wear proper eye and hearing protection when working with pressurized gas.

Use explosion proof drop lights when working on gaseous fueled systems.

Failure to follow these basic safety guidelines could result in death or serious injury.
1.
BOC Gen 2 – Go to next step.

Apply lubricant to the new O-Ring and install the

O-Ring to the SAE side of the high pressure inlet

fitting. Install the high pressure inlet fitting onto the

replacement regulator and tighten to 22 lb-ft (30

N.m).
BOC Generation 1 Shown

Other FSMs similar
2. Apply lubricant to the new O-Ring and install the

O-Ring to the SAE side of the low pressure outlet

fitting. Install the low pressure outlet fitting onto

the replacement regulator and tighten to 40 lb-ft

(55 N.m).
BOC Generation 1 Shown

Other FSMs similar
3/9/2016 Revision A
9
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

3. Loose fit the regulator onto the fuel storage module

(FSM).
BOC Generation 1 Shown

Other FSMs similar
4. Loose fit the low pressure outlet line onto the low

pressure outlet fitting on the regulator.
BOC Generation 1 Shown

Other FSMs similar
5. Apply lubricant to the new O-Ring and install the ORing to the ORFS side of the high pressure inlet

fitting. Loose fit the high pressure inlet line onto the

high pressure inlet line fitting on the regulator and

tighten to finger tight.
BOC Generation 1 Shown

Other FSMs similar
3/9/2016 Revision A
10
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

6. Tighten the regulator mounting bolts to 14 lb-ft (19

N.m).
BOC Generation 1 Shown

Other FSMs similar
7. Using a back-up wrench, tighten the high pressure

inlet line to 30 lb-ft (40 N.m).
BOC Generation 1 Shown

Other FSMs similar
8. Using a back-up wrench, tighten the low pressure

outlet line to 89 lb-ft (120 N.m).
BOC Generation 1 Shown

Other FSMs similar
3/9/2016 Revision A
11
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

9. Connect the PRD vent line fitting onto the PRD vent

line fitting on the regulator and tighten to 1/4 to 1

turn from finger tight (TFFT).

If the PRD vent line fitting is equipped with an ORing, remove and discard the O-Ring.

Apply

lubricant to the new O-Ring and install the O-Ring to

the ORFS side of the PRD vent line fitting.
BOC Generation 1 Shown

Other FSMs similar
10. Connect the pressure sensor electrical connector.
BOC Generation 1 Shown

Other FSMs similar
11. Connect the shutoff valve electrical connector.
BOC Generation 1 Shown

Other FSMs similar
3/9/2016 Revision A
12
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

12. If required, loosen the coolant bowl bolt. Rotate the

coolant bowl as necessary. Then tighten to 120 lb-in

(14 N.m).
BOC Generation 1 Shown

Other FSMs similar
13. Connect both coolant lines onto the regulator and

tighten to 18 lb-in (2 N.m). Remove hose clamp

pliers from the hoses.
BOC Generation 1 Shown

Other FSMs similar
14. Close the system vent valve.

15. Install the vent valve cap (if applicable) and tighten

to 22 lb-ft (30 N.m).

16. Open one of the cylinder valve(s).

17. Start the engine, then turn OFF.

18. Check all disturbed fittings for leaks.

19. Open remaining cylinder valves.
3/9/2016 Revision A
BOC Generation 1 Shown

Other FSMs similar
13
SERVICE BULLETIN

TECHNICAL SERVICE BULLETIN

20. Reinstall previously removed covers.

HPR assembly in the fuel storage module:

a. BOC Generation 1 – The HPR is accessible

from the bottom of the unit. No covers to

reinstall.

b. BOC Generation 2 – Install the M8 bolts

through the holes in the access panel.

Tighten to 14 lb ft. (19 N.m).
c.
Frame Generation 1 & 2 – Place the fuel

storage module upper cover in position and

secure the cover bolts. Tighten to 25 lb ft.

(34 N.m).
d. Frame Generation 3 – Place the access

panel in position and secure the bolts.

Tighten to 14 lb ft. (19 N.m).
3/9/2016 Revision A
14

SaleBestseller No. 1

VDIAGTOOL Bidirectional Scan Tool VD70 Lite, OBD2 Scanner Diagnostic Tool with 31+ Resets, 2026 Scanner for Car, Full System Scan, CAN FD & DoIP, Free Update

Affordable Solution for Professional-grade Car Diagnostics & Repair: As the budget-friendly OBD2 scanner under $300, the VD70 Lite car diagnostic tool offers 31+ hot resets, full bi-directional controls with 4000+ active tests, all system diagnostics, 8-in-One live data graphing (export as CSV Export/Recording/Playback), CAN FD & DoIP protocols, and long-term free update. Additional features include Auto VIN & Auto Scan, diagnostic report sharing/printing, with coverage for over 10,000 vehicle models worldwide, suitable for DIYers, Car Owners, Technicians, and Mechanics on car repairs and maintenance tasks.
OBD2 Scanner with Full Bi-directional Control: The Bidirectional scan tool VIDAGTOOL VD70 Lite performs 4000+ active tests that can send execution commands to the ECU module and identify the repair status, covering for windows, doors, ABS, valves, wipers, headlights, rear mirrors, sunroof,and more in-vehicle components. This bidirectional OBD2 scanner is a must-have diagnostic tool for auto technicians and mechanics on a budget! The available function tests vary by model—please check compatibility via vdiagtool2 @ outlook . c o m before purchase.
OE All Systems Diagnostics & 8-IN-One Data Graphing: VD70 Lite is a dealer-level car scanner diagnostic tool with Auto VIN that can do in-depth diagnostics for 100+ modern car brands, covering all systems including engine, transmission, airbag, ABS, ESP, TPMS, radio, etc, to read/clear code, view live data, freeze frame, and read ECU info. This advanced OBD2 Scanner with 8-in-one data graphing and detailed diagnostic reports makes data viewing more intuitive, ensures quickly accurate repairs by identifying issues, and easily masters the car situation.
Stay Ahead with 31+ Reset for Faster & Easier Repairs: VDIAGTOOL VD70 Lite scanner for car meets almost all daily maintenance needs for both home mechanics and workshops as a professional automotive scan tool. It can perform Oil Reset, ABS Bleed, Crank Sensor Relearn, Idle Relearn, Injector Coding, Window Initialization, HVAC Calibration, Suspension Calibration, Throttle Matching, etc, ensuring efficient repairs and complete maintenance. Besides, long-term free updates keep its functionality and broad vehicle compatibility up to date. Functions vary by model, please send us the Vehicle Model, Year, VIN for compatibility before purchase.
150+ Models, 10000+ Car Coverage & 22 Languages：As a powerful car computer diagnostic tool, VD70 Lite helps you to quickly troubleshoot issues for 95% of US, European, and Asian vehicles. Supporting 22 languages makes it a global car diagnostic scanner for auto mechanics worldwide without language barriers. Note: Simply provide your tool’s S/N and reach out to vdiagtool2 @ outlook . c o m to change the menu language.

Bestseller No. 2

Bidirectional Scan Tool VDIAGTOOL VD80 BT, 2026 Topology Mapping OBD2 Scanner for Car, 8" Wireless Full System Diagnostic Tool with 42+ Resets, ECU Coding, FCA AutoAuth, CAN FD/DoIP, 3 Years Update

Smarter Diagnostics, Broader Coverage, Greater Value Than $1,000+ Tools: The game-changing VD80BT OBD2 scanner delivers 4000+ active tests, 42+ hot services, advanced ECU coding, PMI & V.A.G Guided—all in one scanner for car. With OE-level full system scan and intelligent topology mapping that cuts diagnostic time by up to 50%, you'll work smarter and faster. Supporting FCA AutoAuth, CAN FD & DoIP protocols, this car scanner covers over 10,000 vehicle models worldwide. Built for serious pros and DIYers, it features 8" HD screen & 4+64GB storage, 7.3V fast charging with long-lasting battery, and 33–66ft stable wireless connection—making it the most complete diagnostic solution you’ll ever own
Intuitive Topology Map, Fast Locate Faults: Why waste time clicking module by module? VD80BT car diagnostic scanner takes diagnostics to the next level with its intuitive Topology Map—a premium feature usually found in $1000+ obd scanner. With one tap, it performs all system scan and presents all modules and DTCs in a clear, color-coded layout, boosting diagnostic efficiency by up to 200% and helping you locate issues instantly and reduce repair time and costs. Whether you're a pro boosting efficiency or a beginner learning diagnostics, this obd2 scanner diagnostic tool makes fault-finding faster and smarter for you. Note: varies by vehicle model, please check compatibility before purchase
Wireless Connectivity Simplifies Bi-Directional Control: With 4000+ active tests, including throttle reset, window calibration and solenoid check, VD80BT bidirectional scan tool lets you diagnose and verify functions faster, smarter, and more efficiently. This scanner for car redefines flexibility in bi-directional control through a fully wireless connection, freeing you from the constraints of wired car diagnostic tool in the workshop. Imagine actively controlling components like the A/C clutch, fuel injector, ABS pump, or radiator fan within a wireless range of 33–66ft around the vehicle—all while enjoying stable, high-speed wireless diagnostic and real-time data monitoring
42+ Hot Services, One Powerful Scanner for Car: Why pay a shop $100 just to reset a light? VD80BT car scanner diagnostic tool gives you 42+ hot services from basic resets to advanced maintenance tasks like Crank Sensor Relearn, Injector Coding, ABS Bleeding, Oil Reset, Throttle Relearn, EPB, BMS Reset, Tire Size Reset and more. Plus, it offers 100+ vehicle-specific features including Idle Relearn, VIN Write, Brake Fluid Replacement, Fuel Trim Reset, ABS Initialization and more. Whether you’re resetting TPMS or fixing a stubborn SAS, this car computer diagnostic reader delivers shop-grade precision at a fraction of the cost. Varies by model. Send VIN to verify compatibility before purchase
OE-Level Full System Diagnostics in Your Hands: Dominate diagnostics like a dealership with VD80BT scan tool for all vehicles, delivering factory-grade scanning for aLL systems—including ABS, SRS, ECM, TCM and more. View up to 8 PID graphs simultaneously to quickly catch intermittent issues and troubleshoot with confidence. Easily read and clear DTCs, retrieve freeze frame data, and run active tests for faster, more accurate repairs. It’s like having a dealership-grade scan tool in your pocket, complete with data playback and CSV export for in-depth analysis. Stop guessing and start fixing with surgical precision—professional diagnostics made simple and portable. Check compatibility Please

Bestseller No. 3

OBD2 Scanner Diagnostic Tool VDIAGTOOL D200, Wireless Bidirectional Scan Tool-Lifetime Free Updates, 26 Resets (Unlockable 49+), Full System Car Code Reader OBD2 Scanner Bluetooth for iOS & Android

【OE-Level Full System Diagnostics-Lifetime F*REE Software Updates】The VDIAGTOOL D200 OBD2 Scanner for cars is a all system bidirectional scan tool that enjoy lifetime f*ree software updates, delivers complete system coverage. reading/clearing codes across engine, transmission, ABS, SAS, EPB, TPMS plus full access to body, chassis, powertrain and all control modules. This D200 Bidirectional car scanner works with most 1996+ OBD2 gasoline and hybrid cars and light trucks. It does NOT support pure electric and heavy-duty trucks. PLEASE CHECK COMPATIBILITY BEFORE ORDERING or Contact us with VIN to confirm compatibility.
【Supports OBD2 Full Functions-ZERO Subscription Fees】D200 Bidirectional OBD2 Scanner is a upgarde of universal car code reader. It supports OBD2 full functions to help you turn off the annoying instrument fault indicator, such as read/clear codes, O2 sensor test, I/M readiness, on-board monitor test, datastream, freeze frame, E-VAP system test, and retrieve vehicle information. This professional obd2 scanner diagnostic tool can full access to diagnostics, reset tools and maintenance features with a single payment. NOTE: The fault code can only be cleared after the vehicle's malfunction has been repaired; please ensure the vehicle issue is fixed before clearing the code.
【D200 Hidden 2 Advantages: 1. $169 Expandable 49+ Advanced Resets. 2. $199 Get J2534 P*a*s*s-Thru Programming】Your core car diagnostics and 26 reset remain lifetime f*ree for everyday maintenance. When you need deeper repair capability, upgrade with 3-year access for $169 in Store on VDIAGTOOL App, gaining 49+ advanced resets. D200 configured with J2534 hardware, upgrade only when you need without replacing the entire device. You also can Lifetime Unlock for $199 in Store one-time, perform module programming, software re~flashing and ECU data updates directly. Supports 17+ major brands, including for BMW, for Audi, for GM, for Ford and more. Note:D200 does‘t provide any OE software.
【Full Bidirectional Control / Active Tests】The D200 car scanner diagnostic tool is a true bidirectional scan tool that lets you send commands directly to the vehicle’s ECU for active tests. Quickly test fuel pumps, relays, solenoids, injectors, cooling fans, windows, sunroofs and more to verify operation instantly. Get dealership-level diagnostic control at a fraction of the cost (ofter $100-200$ per diagnostic visit), reduce guessworkand confirm repairs faster, avoid unnecessary parts replacement, towing fees and wait times.
【26 F*ree Essential Reset & Relearn Functions – Everyday Maintenance Made Easy】Handle common maintenance and repair jobs without visiting the shop. The D200 code readers & scan tools includes 26 f*ree high-demand reset functions, including Oil Reset, EPB Service, SAS Calibration, ABS Brake Bleeding, Throttle Relearn, Injector Coding, Headlight Adjustment, Tire Size Reset and more. Perfect for home car owners, mechanics and DIYers – just plug and diagnose anytime, anywhere! Note: Service functions vary by vehicle model—please confirm compatibility.

This product presentation was made with AAWP plugin.

Last update on 2026-05-13 / Affiliate links / Images from Amazon Product Advertising API

Buffer Email Facebook Flipboard Hacker News LinkedIn Messenger Mix Pinterest Print Reddit SMS Telegram Tumblr X VK WhatsApp Line Xing Threads Bluesky Copy Mastodon Nextdoor