Ram Trucks 2012 3500 - CNG Supplement - Manual (Page 32)

MAINTENANCE PROCEDURES
Container Inspection And Testing
Inspection
It is recommended that the fuel system components be
inspected periodically for leaks and/or excessive wear.
Container Retest Requirements (United States)
Each CNG fuel container must be visually inspected after
a motor vehicle accident or fire and at least every
36 months or 36,000 miles, whichever comes first, for
damage and deterioration, in accordance with Motor
Vehicle Safety Standard number 304 compressed natural
gas fuel containers.
The inspection shall be performed only by a qualified
person in accordance with the container manufacturers
established reinspection criteria and the appropriate
Compressed Gas Association, Inc. guideline. Retest
markings must be stamped on the container neck or
marked on a label securely affixed to the container and
overcoated with epoxy near the original test date. Reheat
treatment or repair of rejected containers is not autho-
rized.
The fuel containers expire and must be removed from
service fifteen years from the date of manufacture. A label
on the fuel container states the first container inspection
date and container expiration date.
If there is a question about the proper reinspection of the
CNG fuel container, contact the manufacturer as identi-
fied on the container label.
Container Retest Requirements (Canada)
Each container must be requalified by inspection or
testing after a motor vehicle accident and at least every
36 months or 57 000 km whichever comes first, or at the
time of any reinstallation in accordance with Canadian
Standards Association B51–97, Part 2.
30 MAINTAINING YOUR VEHICLE