DSM.0125 Ver. 3.0 April 26, 2023
Diagnostic, service, maintenance, and inspection manual for 366-series ProCab® behind the cab (BTC) compressed natural gas (CNG) fuel systems equipped with Blue iQ™.
Description and Operation Overview
Maintenance
Excess Flow Valve Reset Procedure
Manifilter Element Replacement
Inspection Types and Intervals
Initial Delivery Inspection
Six Month Inspection
Fuel System Inspection
Bushing Ring and Isolator Inspection
TruckWings™ Preventative Maintenance
Symptom-based Diagnostics
OEM Fuel Gauge Inoperative Diagnostic
Rear View Camera Inoperative Diagnostic
Blue iQ™ Fault Code Diagnostics
Blue iQ™ Fault Code Diagnostic Procedures
Repair and Replacement Procedures
Fuel Management Module (FMM) Components
Fuel System Control Module (FSCM)
Standard NGV1 fill receptacle or fast fill receptacle
High-pressure (HP) fuel gauge or low-pressure (LP) fuel gauge
Supply solenoid valve (SSV) - standard pressure regulator (standalone)
Supply solenoid valve (SSV) coil - standard pressure regulator (standalone)
Supply solenoid valve (SSV) post and operator replacement - standard pressure regulator
Supply solenoid valve (SSV) - Marathon pressure regulator (integrated)
Supply solenoid valve (SSV) coil - Marathon pressure regulator (integrated)
Pressure regulator - standard (black)
Coolant Leak Repair - standard pressure regulator
Pressure regulator - Marathon (anodized red)
Pressure / temperature transducer
Fuel Storage System Components
Cylinder neck mount block - fixed (valve) end
Cylinder neck mount block - sliding (plug) end
Cylinder neck mount block bushing
Fuel System Accessories
LED utility lights
Grab handles
Glad hands holder
OEM accessory mount
Auxiliary Power Unit (APU)
Removing a Vehicle from Service
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