Dover HEIL Command-SST - CNG Fuel System Troubleshooting

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Issued June 2020

Compressed Natural Gas (CNG) Option

Printed in U.S.A.

231

CNG FUEL SYSTEM TROUBLESHOOTING

Heil offers support via the technical assistance line, as well as products, such as a Fuel Module Mini-Tester (Part Number

044-0488), to assist with troubleshooting.

Please provide the following when calling Heil Technical Services at 866-310-4345 with troubleshooting questions:

1. Serial # of CNG Fuel Module

2. Truck Serial #

3. Details of:

When the problem started

What the problem entails

Any troubleshooting performed

Results of troubleshooting actions

Figure 65. Fuel Module Mini-Tester (Part

Number 044-0488)

Main Page

Table of Contents3
Introduction14
Contact Information14
How to Use this Manual15
Warranty Claims and Inquiries16
Electronic Parts Catalog17
Electronic Parts Catalog (Continued)18
Electronic Parts Catalog (Continued)19
Electronic Parts Catalog (Continued)20
Electronic Parts Catalog (Continued)21
Models22
Serial Plate Locations23
Reading the Body Serial Plate24
Hydraulic Oil Specifications25
Oil and Grease Lubricant Recommendations26
Product Nomenclature27
Glossary32
Safety Messages and Decals35
Precautionary Statements36
General Safety Precautions37
General Safety Precautions (Continued)38
Lock-Out/Tag-Out Procedure42
Decals43
Decal Placement44
Decal Images48
Operation61
Daily Checklist62
Daily Checklist63
Refuse Vehicle Daily Inspection65
Daily Checks and Inspections66
Features73
Features74
Features (Continued)75
Operation Specifications76
Operation Specifications (Continued)77
Operation Modes78
Operation Modes (Continued)79
Controls80
Main Push Button Controls81
Supporting Functions Push Button Controls82
Manual Control Push Button Controls83
Joystick Controls84
Joystick Controls (Continued)85
Joystick Controls86
Propping the Body of a Service Hoist Unit87
Propping the Body of a Service Hoist Unit (Continued)88
Propping the Body of a Service Hoist Unit (Continued)89
Propping the Tailgate90
Propping the Tailgate (Continued)91
Side Access Door92
Before Starting a Route / Cold Weather Warmup Procedure93
Battery Disconnect Switch / Storing Refuse in the Body94
Check Hydraulic Oil Level95
Check the Traveling or "In-Transit" Position96
On-Route Operation Procedures97
Driving to Pick-Up Locations98
Lifting and Loading Refuse99
Lifting and Loading Refuse (Continued)100
Compacting the Load101
Leaving the Route for the Landfill/Transfer Station (Continued)102
Landfill/Transfer Station/Recycle Center Procedures103
Setting up an Eject Unit for Unloading104
Unloading an Eject Unit105
End of Day Procedures108
Screens111
Main Screen112
Select-O-Pack Adjust Screen112
Grabber Pressure Adjust Screen114
Pick Height Adjust Screen115
Spearing Dimension Adjust Screen116
Option Config117
Maintenance Screen118
General Counters Screen119
Inputs Screens120
Inputs Screens (Continued)121
Inputs Screens (Continued)122
Inputs Screens (Continued)123
Outputs Screens124
Outputs Screens (Continued)125
Outputs Screens (Continued)126
Analog Raw Values Screen127
Statistical Data Screen128
Hydraulic Warm up Flow Adjust Screen129
Hydraulic Warm up Temp Adjust Screen130
Cortex Controller Locations132
Cortex Controller Nodes133
Unit Calibration134
Unit Calibration (Continued)135
Unit Calibration (Continued)136
Body Controller Software137
Recommended Spare Parts140
Body Preventive Maintenance143
Body Preventive Maintenance Chart144
Body Lubrication Guide146
Packer/Ejector Cylinders Preventive Maintenance147
Loader Preventive Maintenance148
Loader Preventive Maintenance Chart149
Loader Lubrication Guide149
Grabber Belts Adjustment151
Loader Arm Wear Pads152
Proximity Switch Troubleshooting153
Hydraulic155
Check Hydraulic Oil Level156
Change Hydraulic Oil Filter Element157
Drain and Clean the Hydraulic Oil Tank158
Drain and Clean the Hydraulic Oil Tank (Continued)159
Purge the Hydraulic System / Clean and Inspect the Tailgate Seal160
Pressure Adjustment Settings161
Valve Locations163
Pump164
Electrical174
Sensors175
Electrical Schematics178
Electrical Schematic, Main Controller - 701-9287-010178
Electrical Schematic, Body - 701-9287-011178
Electrical Schematic, Body Valve - 701-9287-012178
Electrical Schematic, Lift Valve - 701-9287-013178
Electrical Schematic, Tailgate Valve - 701-9287-014178
Electrical Schematic, Cab to Body RP 170 - 701-9287-016178
Electrical Schematic, Cab Control Panels - 701-9287-017178
Electrical Schematic, Cab to Body RP 170, Peterbilt - 701-9287-018178
Electrical Schematic, Desktop Programming - 701-9287-019178
Hydraulic Schematics189
Hydraulic Schematic - 701-9298190
Hydraulic Schematic, System at Idle - 701-9298-001191
Hydraulic Schematic, Arm out - 701-9298-002192
Hydraulic Schematic, Arm in - 701-9298-003193
Hydraulic Schematic, Arm up - 701-9298-004194
Hydraulic Schematic, Arm down - 701-9298-005195
Hydraulic Schematic, Arm Dump - 701-9298-006196
Hydraulic Schematic, Arm Undump - 701-9298-007197
Hydraulic Schematic, Arm Grab - 701-9298-008198
Hydraulic Schematic, Arm Release - 701-9298-009199
Hydraulic Schematic, Packer Extend - 701-9298-010200
Hydraulic Schematic, Packer Retract - 701-9298-011201
Hydraulic Schematic, Oil Warming - 701-9298-012202
Hydraulic Schematic, Tailgate Lock - 701-9298-013203
Hydraulic Schematic, Tailgate Unlock - 701-9298-014204
Hydraulic Schematic, Tailgate Raise - 701-9298-015205
Hydraulic Schematic, Tailgate down - 701-9298-016206
Hydraulic Schematic, Top Door Close - 701-9298-017207
Hydraulic Schematic, Top Door Open - 701-9298-018208
Hydraulic Schematic, Arm out down Undump - 701-9298-019209
Hydraulic Schematic, Arm in up Dump - 701-9298-020210
Hydraulic Schematic, Arm in and Packer Retract - 701-9298-021211
Hydraulic Schematic, Arm in and Packer Extend - 701-9298-022212
Hydraulic Schematic, Arm out down Release - 701-9298-023213
Hydraulic Schematic, Arm out down Grab - 701-9298-024214
Compressed Natural Gas (CNG) Option215
Important Safety Information216
Important Safety Information (Continued)217
Important Safety Information (Continued)218
Properties of Natural Gas / Signs of a Fuel Leak219
CNG Fuel System Functions and Components220
CNG Fuel System Components (Continued)221
CNG Fuel System Components (Continued)222
CNG Fuel System Components (Continued)223
Fuel System Shut down Procedure224
CNG Vehicle Operator Emergency Response (Continued)225
Starting Vehicle / Fueling Procedure226
Fueling Procedure (Continued)227
Fueling Procedure (Continued)228
Fueling Procedure (Continued) / Transfer Fueling (Defueling) Procedures229
CNG Fuel System Maintenance230
Maintenance Part Numbers231
Depressurizing/Re-Pressurizing Procedure232
Depressurizing/Re-Pressurizing Procedure (Continued)233
High Pressure Filter234
Welding and Hot Work Procedures235
Lifting the Vehicle / Towing the Vehicle236
CNG Fuel System Inspections237
Inspection/Preventive Care Schedule / Preparation before Maintenance238
Daily CNG Fuel System Inspection239
CNG Fuel System Troubleshooting241
CNG Fuel System Troubleshooting (Continued)242
CNG Fuel System Troubleshooting (Continued)243
CNG Fuel System Troubleshooting (Continued)244
CNG Fuel System Troubleshooting (Continued)245
CNG Front of Body / Top of Body Decal Placement246

Dover HEIL Command-SST - CNG Fuel System Troubleshooting

Table of Contents