NHTSA ID Number: 10236263
Manufacturer Communication Number: PDO.0079
TSB/Document Date: 2023-05-15
Summary
ProCab® 317-series behind the cab (BTC) compressed natural gas (CNG) fuel system component location diagrams.
Reviewers Note: Words/phrases in blue will be links to specific diagnostic procedures when this document is published in Freshdesk.
ProCab® 317-series Fuel System Component Locator
PDO.0079 Ver. 1.0 April 11, 2023
ProCab® 317-series behind the cab (BTC) compressed natural gas (CNG) fuel system component location
diagrams. Click descriptions in each table for more information about function and operation.
ProCab® Fuel System Components – Driver Side
Item Description
1
cylinder
2
manual cylinder valve
3
pressure relief device (PRD), integral
4
cylinder neck mount, fixed valve end
5
pressure relief device (PRD), remote
6
Fuel System Control Module (FSCM)
7
pressure-temperature transducer
8
defuel receptacle
9
10
defuel valve, 2-way
11
bleed valve
12
Manifilter
13
supply solenoid valve (SSV)
14*
pressure relief valve (PRV)
15
Marathon pressure regulator
16*
coolant lines
17
1/4-turn manual shutoff valve
18
19
standard NGV1 fill receptacle
20
fuel receptacle covers
21
fast fill receptacle
22
check valve
*Not visible
Reviewers Note: Words/phrases in blue will be links to specific diagnostic procedures when this document is published in Freshdesk.
ProCab CNG
Fuel System
Components –
Driver Side
®
1
5
7
8
10
22
FMM, Lower
FMM, Upper
11
15
2
21
3
20
4
13
12
19
6
9
17
18
Reviewers Note: Words/phrases in blue will be links to specific diagnostic procedures when this document is published in Freshdesk.
®
ProCab CNG Fuel System Components – Passenger Side
Item Description
1
cylinder
5
PRD vent caps
23
pressure relief device (PRD), remote
24
cylinder neck mount, sliding plug end
25
cylinder adaptor
26
bushing, cylinder neck
27
chassis harness connector, Blue iQ™
28
mounting brackets
29
fuel system to chassis LP fuel fitting
30
fuel system coolant barb fittings
31
isolator bushing
Reviewers Note: Words/phrases in blue will be links to specific diagnostic procedures when this document is published in Freshdesk.
ProCab CNG
Fuel System
Components –
Passenger Side
®
1
5
23
5
Cylinder mount, plug end
24
26
23
31
27
30
29
31
28
FRONT
28
25
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
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TSB/Document ID: PDO.0079
Replacement Service Bulletin Number:
MFR Communication Date: 2023-04-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FUEL SYSTEM, OTHER
MFR Component System:
MFR Component Subsystem:
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