FPA-460/3-75-009-b
August 1975
       ACTUAL AND RECOMMENDED
          MAINTENANCE PRACTICES
        FOR LIGHT-DUTY  VEHICLES
               FOR 1975 AND LATER
                        MODEL YEARS
                           VOLUME II
           D.S. ENVIRONMENTAL PROTECTION AGENCY
              Office of Air and Waste Management
            Office of Mobile Source Air Pollution Control
             Certification and Surveillance Division
                 Ann Arbor, Michigan 48105

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                               EPA-460/3-75-009-B
ACTUAL AND RECOMMENDED


  MAINTENANCE PRACTICES


 FOR  LIGHT-DUTY VEHICLES


     FOR 1975  AND LATER


           MODEL YEARS


             VOLUME  II



                   by

               Charles W. Sims

          Bendix Launch Support Division
           Cocoa Beach, Florida 32931

            Contract No. 68-03-0453
             Project No. WA73-R513



      EPA Project Officer:  Leonard D. Verrelli



                Prepared for

     U. S.  ENVIRONMENTAL PROTECTION AGENCY
        Office of Air and Waste Management
     Office of Mobile Source Air Pollution Control
        Certification and Surveillance Division
           Ann Arbor , Michigan 48105

                 August 1975

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This report is  issued by the Environmental Protection Agency  to report
technical data of interest to a limited number of readers.  Copies are
available free of charge to Federal employees, current contractors and
grantees, and nonprofit organizations  -  as supplies permit - from  the
Air Pollution Technical Information Center,  Environmental Protection
Agency, Research Triangle Park,  North Carolina 27711;  or,  for  a
fee,  from the National Technical Information  Service,  5285 Port Royal
Road,  Springfield, Virginia 22161.
This report was  furnished  to the Environmental Protection Agency by
Bendix  Launch Support Division, Cocoa Beach, Florida  32931,  in fulfillment
of Contract No.  68-03-0453.  The contents of this report are repro-
duced herein  as  received from  Bendix Launch Support Division.  The
opinions,  findings,  and conclusions expressed are those of the  author
and not necessarily those of the Environmental Protection Agency.
Mention of company or product names is not to be considered as  an
endorsement by the Environmental Protection Agency.
                    Publication No. EPA-460/3-75-009-b
                                   11

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                                  PREFACE


The purpose of this report is to present findings, conclusions, and substan-
tiating data gathered by the Bendix Corporation, Launch Support Division,
during a 1-year contract performance period, 9 May 1974 through 9 May 1975,
on the actual and recommended maintenance practices for light-duty vehicles
for 1975 and later-model years.

The report consists of two volumes.  Volume I contains ten chapters which
encompass the Introduction, Summary, Conclusions, the discussion of the
performance of six of the seven tasks enumerated in the Introduction, and
finally, Survey Findings.  It also contains two appendixes, an automotive
diagnostic equipment index, and the individual tally sheets on which the
results of the consumer, commercial, and dealer surveys have b.een consolij-
dated.                                                                   j

Volume II contains the seventh task listed in the Introduction, the review
and analysis of the 1974 Durability Test scheduled service records.

This study was performed for the l>. S. Environmental Protection Agency (EPA),
Office of Air and Water Programs, Office of Mobile Source Pollution Control ,
Certification and Surveillance Division.  The Technical Project Officer was
Mr. L. D. Verrelli.  The report will provide EPA with valid, current infor-
mation on consumer and commercial automotive activities.
                                 m

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                             TABLE OF CONTENTS
VOLUME I

Title Page

Disclaimer Page

Preface

Table of Contents                                                       iv

List of Figures                                                        vii

List of Tables                                                         vii


Chapter

   I     Introduction                                                    1

         A.  Background                                                  1
         B.  Scope                ••                                       2
         C.  Contract Organization                                       3

  II     Summary                                                         9

 III     Conclusions                                                    11
                                  /
  IV     Perform a Field Survey of Actual  and Recommended
         Maintenance Practices  for Light-Duty Vehicles  for
         1975 and Later-Model Years  (Task  1)                             13

         A.  Introduction                                               13
         B.  Field Survey Preparation                                   16
         C.  Consumer Field Survey                                      17
         D.  Commercial  Field Survey                                    17
         E.  Summary                                                    18

   V     Determine the Type of  Diagnostic  Equipment Expected to
         Be Procured for 1975 Vehicles  and Later-Model  years
         (Task 2)                                                       23

         A.  Introduction                                               23
         B.  New-Car Dealers                                            23
         C.  Franchised Diagnostic Centers                              23
         D.  Mass Merchandisers                                         24
         E.  Independents                                               24
         F.  Summary                                                    24

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                             TABLE OF CONTENTS
                                (continued)
  VI     Determine the Current Availability of Automotive
         Diagnostic Equipment and Project Future Availability
         (Task 3)                            .                            25

         A.  introduction                                                25
         B.  Automobile and Diagnostic Equipment Manufacturers           25
         C.  Summary                                                     27

 VII     Determine the Type of Automotive Maintenance and
         Diagnostic Evaluations Presently Being Performed and
         Whether Maintenance Practices Are Expected to Change
         for the 1975 and Later-Model  Vehicles (Task 4)                  29

         A.  Introduction                                                29
         B.  Vehicle Manufacturers                                       29
         C.  Maintenance Service Centers                                  29
         D.  Summary                                                     32

VIII     Determine Consumers'  Automotive  Habits and Practices
         Relative to Vehicle Make, Age, and Original  Cost
         (Task 5)                                                        33

         A.  Introduction                                                33
         B.  Consumer Survey                                             34
         C.  Summary   ,                                                  35

  IX     Determine the Competence Level That Will  Be  Required
         of Mechanics to Maintain the  1975 and Later Model
         Automobiles (Task 6)                                             45

         A.  Introduction                                                45
         B.  General Background               .                           45
         C.  Current Mechanic Competency  Review                          45
         D.  Future Mechanic Competency Level                             48
         E.  Summary                                                     50

   X     Survey Findings                                                 51

         A.  Introduction                       .                         51
         B.  Tally Sheets                                                51
         C.  Summary                                                     55

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                             TABLE OF CONTENTS
                                (continued)
Appendix                                                             .   •

   A     Automotive Diagnostic Equipment Index, March 1975              57

         A.  Automotive Engine Analyzers                                59
         B.  Engine and Chassis Dynamometers                            73
         C.  Exhaust Emission Analyzers                                 79
         D.  Individual Engine Diagnostic and Analytical Components     83   i

   B     Tally Sheets                   :                                87   '

             Consumer Consolidated Tally Sheets                         88
             Commercial Consolidated Tally Sheets                      108
             Dealer Consolidated Tally Sheets                          148


VOLUME II
Chapter

 XI      Develop a Method to Review and Analyze the 1974 Environ-
         mental Protection Agency Durability Test Maintenance
         Records (Task 7)                                                1

         A.  Introduction                                                1
         B.  Development of the Method                                   1
         C.  Summary                                                     1
         D.  Conclusions                                                 1
         E.  1974 Durability Test Comparison  Chart  Index                  2
                                     vr

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                               LIST OF FIGURES

                                                                         Page

                                                                          14
        Management/Mechanic Ratio and Percentages Prevalent in the
        Service Industry                                                  31
                               LIST OF TABLES
Table
1       Consumer Maintenance Habits - Selection of Maintenance
        Methods Compared With Local Vehicle Inspection Regulations        36
2A.2B   Consumer Maintenance Habits by Vehicle Year Model                37,38
3A.3B   Consumer Maintenance Habits by Vehicle Size                      39,40
4       Consumer Maintenance Habits by Vehicle Manufacturer/Group         41
5       Consumer Maintenance Habits by Geographical Location,
        Services Accomplished By                                          42
6       Consumer Maintenance Habits by Geographical Location,
        Service Performed By                                              43

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                               CHAPTER XI

                  DEVELOP A METHOD TO REVIEW AND ANALYZE
                 THE 1974 ENVIRONMENTAL PROTECTION AGENCY
               DURABILITY TEST MAINTENANCE RECORDS (TASK 7)


A.  INTRODUCTION

    In 1974, the EPA conducted a durability test on all vehicles manufac-
    tured and/or sold in the United States.  The task attempted in this
    chapter is to review, to show the variances, records of scheduled main-
    tenance operations recommended by automobile manufacturers, owners'
    handbook recommendations, and the scheduled maintenance actually per-
    formed during the 1974 durability tests.

B.  DEVELOPMENT OF THE METHOD

    It was determined that a practical way to properly evaluate the manu-
    facturers' maintenance programs was to perform an individual analysis
    of the manufacturers' historical records for every engine family sub-
    jected to the durability test.

    An interim worksheet was developed and completed for each engine within
    each engine family of each manufacturer.  The information was recorded
    according to the actual mileage intervals at which scheduled maintenance
    was performed.

    The basic information from each interim worksheet was totalled, collated,
    and transferred to individual corresponding charts (Durability Test
    Comparison Charts).   These charts are shown at the end of this chapter.

    Each chart is identified by manufacturer, model, engine CID, and identi-
    fication number, and contains at the bottom of the chart the 47 most
    common maintenance functions found in the owners' handbooks for the auto-
    mobiles and engine families listed.  Under each maintenance function are
    listed the following:  Durability test (the recommended durability main-
    tenance schedule), Owner's Handbook (owner's manual), and Actual (the
    scheduled maintenance actually performed during the 1974 Durability Test.
    The numbers at the left of the chart (1 through 9, or 2 through 18) rep-
    resent the actual number of times the particular maintenance function
    was performed during a 50,000-mile period.

C.  SUMMARY

    The durability records obtained from the EPA consisted of 72 engine
    families encompassing 162 vehicles from 32 vehicle manufacturers.  Data
    accumulated from the durability records is displayed in the Durability
    Test Comparison Charts which are shown at the end of this chapter.

D.  CONCLUSIONS

    The differences in the vehicle manufacturers' durability test reporting
    did not provide adequate or significantly consistent variances to allow
    values to be assigned to highlight a condition.  As a result, each chart
    must be reviewed independently.  To illustrate this point, one of the
    most frequent and basic maintenance requirements (oil change) was reviewed;
    it provided the following results:  25 percent of the vehicle manufacturers

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    accomplished oil changes as  recommended  in  the  handbook;  45 percent failed
    to accomplish the changes; 5 percent  changed  the  oil more frequently than
    recommended; and 25 percent  could not be determined because of insufficient
    data.

    Durability test records that were provided  indicate that  not one manufac-
    turer accomplished all  the maintenance operations  as recommended in the
    vehicle owner's handbook.
E.  1974 DURABILITY TEST COMPARISON CHART  INDEX
       Manufacturer

       American Motors
Engine Family

3.802 L (232 CID)
Vehicle Number   Page

A2A057E139615      8
A2A057E139632      12
A3A057E299694      16
A4A087A112223      20
       American Motors    4.228 L  (258 CID)
                      A2A157A147538     24
                      A2A157A147568     28
                      A2A157A147606     32
       American Motors    4.982  L  (304 CID)     A2A157H147543      36
                                              A3A797H208016      40
       American Motors    5.899 L  (360 CID)
                      A3A057N205723     44
                      A3A157P204937     48
                      A3A157P206276     52
                      A3A857212931       56
                      J3A252WP56385     60
       American Motors    6.571 L  (401 CID)     A3A1572300187      64
       Audi
       Audi
1.472 L (89.8 CID)
1.876 L  (114.5  CID)
8432069877
8432118297
8432118298
8432121945
8131086149
8131102812
8131126712
8531103558
68
72
76
80
84
88
92
96

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Manufacturer

BMW
Engine Family
Vehicle Number   Page
1.988 L (121.3 CID)   2508016          100
                      2588094          104
                      2760013          108
                      2760065          112
                      2763360          116

BMW
Buick
Buick
Cadillac
Chevrolet
Chevrolet
Chevrolet
Chrysler
Datsun

2.982 L (182.0 CID)
5.735 L (350 CID)
7.456 L (455 CID)
7.735 L (472 CID)
2.294 L (140 CID)
4.097 L (250 CID)
5.735 L (350 CID)
4.179 L (225 CID)
5.211 L (318 CID)
5.899 L (360 CID)
6.555 L (400 CID)
7.21 L (440 CID)
1,29 L (78.7 CID)
2763377
2763732
2764445
3101188
313001
4102
4114
420
4202
5114
5124
1102
1122
1142
1201
1402
1412
1414
1422
1432
VL29C3B1 30211
WH23G2A124512
VS29H3B2 18486
DP43M3D1 22640
CH43T2C1 40106
A345
F901
120
124
128
132
136
140
144
148
152
156
160
164
168
172
176
180
184
188
192
196
200
204
208
212
216
220
224
                               3

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Manufacturer
Engine Family
Vehicle Number   Page
Datsun
1.952 L (119.1  CID)    B961
                      B964
                 228
                 232
Dodge
1.598 L (97.5 CID)
A535107180
A535109395
236
240
Dodge
1.995 L (121.75 CID)   A115AF000011      244
                      A115AF000012      248
Dodge


Ferrari


Fiat
7.21 L (440 CID)
DP43T3D122639    252
2.418 L (147.55 CID)   01020
1.29 L (78.70 CID)    1226075
                      1226493
                 256
                 260
                 264
Fiat
1.592 L (97.17 CID)   1270012
                      1273904
                  268
                  272
Ford


Ford
2.0 L (122 CID)


2.3 L (140 CID)
31P21-2.0-8
31P31-2.3-1
4P1-2.3-10G
276
280
284
Ford
2.8 L (171 CID)
31P37-2.8-2
4Z1-2.8-51H
288
292
Ford


Ford
3.277 L (200 CID)     31Q12-200-7
                  296
3.933 L (240 CID)     21F04-1-240-1    300
                      21F04-1-240-3    304
Ford
4.097 L (250 CID)
4Q1-250-4-41F     308
4Q1-250-54E       312
Ford
4.916 L (300 CID)     31F02-300-1
                  316

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Manufacturer
Ford


Ford






Ford

Ford
Ford

Jensen

Lotus



Luv

Maserati


Engine Family
4.949 L (302 CID)


5.752 L (351 CID)






5.90/6.39 L
(360/390 CID)
6.555 L (400 CID)
7.538 L (460 CID)

1.975 L (120.5 CID)

1.557 L (95.0 CID)



1.816 L (110.8 CID)

4.932 L (301 CID)


Vehicle Number
23030-302-1
23031-302-3
4E1-302-20D
24A53-351W-1
28A57-351W-2
3073-351CJ-3
34A56-351C-16
4A1-351C-12F
4A1-351C-21F
4A1-351C-22F

37F76-360-20
4A1-400-10D
3M51-460-1
32M79-460-11
DVF111K
EXE751J
2735R
2588R
369244
7008220661 R
CLN 1428200026
CLN 1428200028
176
348
810
Pagi
320
324
328
332
336
340
344
348
352
356

360
364
368
372
376
380
384
388
392
396
400
404
408
412
416
Mazda
1.147 L (70 CID)      S124W127735      420
                      S124W127737      424
Mazda
1.311  L'(80 CID)      LA22S110003      428
                      LA23S100002      432

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Manufacturer
Mazda
Mazda
Mercedes-Benz
Oldsmobile
Oldsmobile
Opel
Pontiac
Pontiac
Porsche
Renault
Renault
Engine Family
1.586 L (96.8 CID)
1.796 L (109.6 CID)
4.523 L (276 CID)
5.735 L (350 CID)
7.456 L (455 CID)
1.898 L (115.8 CID)
5.735 L (350 CID)
6.555 L (400 CID)
7.456 L (455 CID)
2.686 L (163.9 CID)
1.565 L (95.5 CID)
1.647 L (100.5 CID)
Vehicle Number
SN3A101769
SN3A109483
SGTAME39827
SGTAME39917
A- 30
A-31
A-43
310
3102
320
3222
3232
6102
2104
210
220
2214
119.110.001
911.030.0738
911.410.0013
911.411.0015
911.430.0014
911.431.0012
9800038
9800040
616
801
8308713
960052
Pagi
436
440
444
448
452
456
460
464
468
472
476
480
484
488
492
496
500
504
508
512
516
520
524
528
532
536
540
544
548

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Manufacturer
Engine Family         Vehicle Number   Page
Rolls Royce
Saab
Toyota
Toyota
Toyota
Toyota
Toyota
Volkswagen
Volkswagen
Volkswagen
Volvo
Volvo
6.751 L (412 CID)
Not available
1.167 L (71.2 CID)
1.588 L (96.9 CID)
1.966 L (120 CID)
2.563 L (156.4 CID)
3.879 L (236.7 CID)
1.584 L (96.66 CID)
1.793 L (109.4 CID)
1.794 L (109.5 CID)
1.983 L (121 CID)
2.982 L (182 CID)
SRA12315
Not available
KE20249212
TE21051796
TE21633368
RT85010803
RT85010877
MX 120000 11
MX 130000 10
FJ401158
FJ401 34707
1332183418
1332219635
2232185939
2232186717
2232018131
2232019298
4732909270
164878
167140
168709
174330
12239
60226
62350
79686
552
556
560
564
568
572
576
580
584
588
592
596
600
604
608
612
616
620
624
628
632
636
640
644
648
652

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BIBLIOGRAPHIC DATA
SHEET '
                     1. Report
EPA-460/3-75-009B
                                      3. Recipient's Accession No.
4. Title and Subtitle
  Actual and Recommended Maintenance Practices for Light-Duty
  Vehicles for  1975 and Later-Model  Years
                                      5. Report Date
                                      6.
7. Author(s)
  Charles W. Sims
                                      8. Performing Organization Kept.
                                        No.
9. Performing Organization Name and Address

  The Bendix Corporation, Launch  Support Division
                 .-.•'*
                                      10. Project/Task/Work Unit No.
                                      11. Contract/Grant No.
12. Sponsoring Organization Name and Addres*
 U. S.  Environmental  Protection Agency
 Office of Air and Water Programs, Office  of Mobile Source
    Pollution Control, Certification and Surveillance Division
 Ann Arbor, Michigan   48105
                                      13. Type of Report & Period
                                         Covered  Final  Report
                                       July 1974 to July 1975
                                      14.
15. Supplementary Notes
16. Abstracts  '/\ survey was made  to  determine the actual and recommended maintenance prac-
 tices for light-duty vehicles for 1975 and later-model years.   Data was  gained through
 consumers, new-car dealerships, manufacturers,  service stations, diagnostic centers,
 specialty shops,  independent service stations,  and mass merchandisers,  literature  re-
 search, and data  evaluation.  The following conclusions were  reached.  Automotive  ser-
 vice requirements are becoming  more complex.  Diagnostic centers are diversifying  into
 diagnostic, service, and repair facilities.  Automobile dealerships employ the highest
 percentage of  classified or  rated mechanics and are more fully equipped  than other
 classifications.   Current and future requirements  can be met  by the diagnostic equip-
 ment industry.  The majority of automobile owners  are unwilling to voluntarily replace
 a malfunctioning  catalytic converter
17. Key Words and Document Analysis.  17o. Descriptors
17b. Identifiers/Open-Ended Terms
17c. COSATI Field/Group
18. Availability Statement

   Unlimited
                           19.. Security Class (This
                             Report)
                           	UNCLASSIFIED
                                                         20. Security Class (This
                                                            Page
                                                              UNCLASSIFIED __
21. No. of Pages
                                                 22. Price
FORM NTI5-33 (REV. 10-73)
                    ENDORSED BY ANSI AND UNESCO.   ggg  THIS FORM MAY BE REPRODUCED
                                                                               USCOMM-OC 82S5-P74

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