[Code of Federal Regulations]
[Title 40, Volume 29]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR610.52]

[Page 1007-1008]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 610_FUEL ECONOMY RETROFIT DEVICES--Table of Contents
 
                  Subpart E_Durability Test Procedures
 
Sec. 610.52  Maintenance.

    (a) Maintenance during the durability evaluation can best be 
considered in three separate categories:
    (1) Normal scheduled vehicle maintenance,
    (2) Unscheduled vehicle maintenance, and
    (3) Retrofit maintenance.
    (b) Normal scheduled vehicle maintenance is the periodic service 
specified in the original owner's manual supplied to the owner at the 
time of new vehicle purchase.
    (1) Normal periodic engine oil changes, vehicle lubrication, and oil 
filter changes, as specified in the original owner's manual, will be 
performed during durability mileage accumulation.
    (2) For purposes of this part, the following items of normally 
scheduled vehicle maintenance will not be performed during the 
durability mileage accumulation:
    (i) Normal tune-up items:
    (A) Spark plugs.
    (B) Condenser.
    (C) Rotor.
    (D) Distributor cap.
    (ii) Air Cleaner element.
    (iii) PCV Inspection.
    (iv) Dwell and timing check.
    (v) Charging circuit check.
    (3) Periodic maintenance items specified in the original owner's 
manual, other than those listed above, may be performed if found to be 
necessary by the Administrator.
    (c) Unscheduled maintenance. Because the vehicles used for 
durability evaluation in this program will probably have considerable 
mileage accumulation and unknown maintenance prior to inclusion in the 
program, it can be anticipated that certain vehicle and engine failures 
may occur, which may be unrelated to the retrofit device. Unscheduled 
maintenance will be performed only in those cases where a significant 
and obvious driveability problem has been reported by the driver of the 
vehicle.
    (1) Correction of the following problems will be made as soon as the 
problems occur:
    (i) Tire replacement (same size and type).
    (ii) Vehicle body repairs (remote from engine and retrofit).
    (iii) Windshield wipers.
    (iv) Fluid levels unrelated to retrofit.
    (v) Brakes.
    (vi) Hoses unrelated to retrofit.
    (vii) Belts unrelated to retrofit.
    (viii) Suspension failures.
    (ix) Wheel alignment.
    (x) Steering.
    (xi) Wheel bearings.
    (xii) Non-engine electrical system.
    (xiii) Drivetrain components (U-joints, axles, transmission 
adjustments, etc.)
    (2) Other unscheduled maintenance of the engine or drivetrain may be 
made as directed by the Administrator. Upon notification of a need for 
unscheduled maintenance, the Administrator may decide that before and 
after maintenance fuel economy tests are required.
    (d) Retrofit maintenance. Maintenance of the retrofit device will 
normally not be performed during the accumulation of durability mileage 
of 15,000 miles. However, certain retrofit devices may require periodic 
maintenance that is directly related to device function. An example is 
the periodic addition of fluid to the reservoir of a vapor injector. The 
Administrator will determine whether periodic maintenance will be

[[Page 1008]]

allowed, based on his review of available information including the 
device manufacturer's maintenance instructions to the consumer.
    (e) A log of all maintenance shall be kept for every vehicle. These 
logs will be summarized in the final report by the Administrator.