Cng Low-Pressure Fuel Filter Draining - freightliner Custom Classic MT45 2022 Maintenance Manual

Fuel
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2
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1. Fuel Filter Head
2. Filter Element
3. Element Retainer
Fig. 2, CNG Low-Pressure Fuel Filter Assembly
4. Install the new element, the element retainer, the
bowl, and the bowl nut.
5. Turn the fuel supply on at the tanks.
47–06 CNG Low-Pressure Fuel
Filter Draining
WARNING
Compressed natural gas is highly flammable. See
the safety precautions listed in Chapter 10 of the
Walk-In Van Chassis Operator's Manual or Group
47 of the Walk-In Van Chassis Workshop Manual,
or take the vehicle to an authorized Freightliner
dealer. Failure to observe these precautions could
lead to the ignition of the natural gas, which could
cause severe bodily harm, or death, or property
damage.
Damage
Abrasion on the Fiberglass
Wrap
Walk-In Van Chassis Maintenance Manual, June 2021
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4
5
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4. Filter Bowl
5. Bowl Nut
CNG Tank Visual Inspection
Condition
Less Than 0.010 Inch (0.3 mm) Deep
More Than 0.010 Inch (0.3 mm) But Less
Than 0.030 Inch (0.8 mm) Deep
More Than 0.030 Inch (0.8 mm) Deep
Shut off the fuel supply at the fuel tanks.
Drain the fuel filters, which are mounted on the left-
hand frame near the fuel regulator, by removing the
drain nut located at the bottom of the housing of
each filter.
Perform this maintenance procedure as indicated in
the maintenance interval chart in this manual.
47–07 CNG Fuel Tank Visual
Inspection
WARNING
Compressed natural gas is highly flammable. See
the safety precautions listed in Chapter 10 of the
Walk-In Van Chassis Operator's Manual or Group
47 of the Walk-In Van Chassis Workshop Manual,
or take the vehicle to an authorized Freightliner
dealer. Failure to observe these precautions could
lead to the ignition of the natural gas, which could
cause severe bodily harm, or death, or property
damage.
Each fuel tank must be visually inspected at speci-
fied intervals for external damage and deterioration.
The inspection must be performed by a qualified per-
son, in accordance with the manufacturer's estab-
lished reinspection criteria and Compressed Gas As-
sociation documents.
Perform this maintenance procedure as indicated in
the maintenance interval chart in this manual. See
Table 1 for the remedies to any damage found on
the tank. See Group 47 of the Walk-In Van Chassis
Workshop Manual for tank repair procedures, or take
the vehicle to an authorized Freightliner dealer.
No repair needed.
Repair.
Replace tank.
47
Remedy
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