THE WELCH COMPANY
440 Davis Court #1602
San Francisco, CA 94111-2496
415 781 5700


S U M M A R Y


DIARY: January 21, 1997 07:00 AM Tuesday; Rod Welch

Took Millie's car in for service and safety check.

1...Summary/Objective
2...Transmission Service
3...Brake Inspection
4...Tire Inspection
5...Why Did General Tire Fail on 961214?
6...One explanation is that tread wear was inaccurately reported.
7...Safety Inspection, Defective General Tire
8...Adjustment Due from General?
9...Improving Preventive Maintenance

ACTION ITEMS.................. Click here to comment!

1...General Tire should advise if its testing shows that its tire can
2...In any case it is unclear why S&C would not have our correct address,
3...General tire shows that Generals are warranted for 60,000 miles, not
4...S&C's lack of notice on 961104 suggests the General tire failed over a

CONTACTS 
0201 - S & C Ford                         415 553 4400 fax or 800...
020101 - Mr. Carl Redling; Service Advisor; Service Department     =Telephone/fax

SUBJECTS
Millie's Mercury Sable, 940423
Re-inspect brakes, tire inspection, Service
Tires, Replace 2 General Tires with Unocal,
Change Oil, safety check
Transmission

0707 -    ..
0708 - Summary/Objective
0709 -
070901 - Follow up ref SDS 26 0000, ref SDS 23 0000.
070902 -
070903 - Had car serviced, included brake inspection which showed no apparent
070904 - problems, but transmission required service, so we did that.  Replaced
070905 - windshield wipers.  S&C forgot to give us the sticker for the next
070906 - service.  Received response from Charles Mori on the tire failure.
070907 - Advised that Charles analysis seems to conflict with the tire tread
070908 - report issued today.
070909 -
070910 -     [On 970127 sent letter on flat tire problem. ref SDS 27 9655]
070911 -
070912 -
0710 -
0711 -
0712 - Discussion
0713 -
071301 - Talked to JD.  He wrote up a report for Barbara Stone.
071302 -
071303 - I asked that the windshield wipers be replaced.
071304 -
071305 - JD suggested a brake inspection.
071306 -
071307 - I asked when the last inspection was performed.
071308 -
071309 - JD looked this up and reported it was done at 47K miles.
071310 -
071311 - Our records show this occurred on 960724, ref SDS 17 9742, as reported
071312 - on S&C invoice at ref DRP 3 5681.
071313 -
071314 - JD feels the mileage now at 53K warrants another inspection.
071315 -
071316 - I agreed to this.
071317 -
071318 - Actually the inspection on 960724 was found to be in error, and was
071319 - corrected in a follow up inspection on 960802, ref SDS 20 6822, as
071320 - reported in the invoice ref DRP 4 8500.
071321 - ..
071322 - I asked that service include a report on tire tread wear since
071323 - that is necessary for the warranty on the Hankook tires S&C sold us to
071324 - replace a failed General tire on 951009. ref SDS 7 5511 960724  On
071325 - 960724 S&C forgot to do this inspection and it required rework to
071326 - accomplish the required inspection. ref SDS 17 0085
071327 -
071328 -     [Tire inspection is reported below. ref SDS 0 3333]
071329 -
071330 -
071331 -
0714 -
0715 -
0716 - 1202 called S&C
0717 -
071701 - The receptionist said the car is ready to be picked up.
071702 -
071703 - I asked about the windshield wipers because they are not listed on
071704 - the Workorder JD prepared.
071705 -
071706 - The receptionist said the invoice does not show that S&C replaced the
071707 - windshield wipers.
071708 -
071709 - I asked her to have this work performed.
071710 -
071711 - She said I have to talk to the service supervisor.  She said her
071712 - records show it is Carl Redling.
071713 -
071714 - I noted that the Workorder lists Barbara Stone as the service
071715 - supervisor.
071716 -
071717 - She said Barbara is at lunch, so I have to talk to Carl.
071718 -
071719 - I agreed, since Carl has helped us a lot.
071720 -
071721 - She said I have to hold for Carl because he has another call.
071722 -
071723 -
071724 -
071725 -
0718 -
0719 -
0720 - 1215 Carl came on the line
0721 -
072101 - He will add a windshield wiper to the invoice and have the work done.
072102 -
072103 -      This work is shown in the invoice at ref DRT 2 0759.
072104 -
072105 - I asked if I can pick up the car in about an hour.
072106 -
072107 -
072108 -  ..
072109 - Transmission Service
072110 -
072111 - Carl said that is enough time to do the windshield wiper work, but the
072112 - mechanic noted that he found fluid leaking from the transmission. Carl
072113 - advised that S&C recommends a transmission service which replaces the
072114 - gasket, a filter and replaces the transmission fluid.  He said it
072115 - costs about $130.  He will try to get it done for us for $99.  The
072116 - work will take an hour after the mechanics return from lunch.
072117 -
072118 - I agreed to the work at the $130 quote.
072119 -
072120 - Carl said the work should be be completed by 1500.
072121 -
072122 -
072123 -
0722 -
0723 -
0724 - 1553 picked up car
0725 -
072501 - Talked to Carl and he put me in touch with Ron who performed the work
072502 - on the car.
072503 -
072504 - Ron showed me the transmission gasket that was replaced.  He said the
072505 - cuts in the gasket occurred during replacement.
072506 -
072507 - I asked if the condition of the gasket warranted replacement?
072508 -
072509 - Ron said he believes the gasket is sufficiently warn to require
072510 - replacement, as evidenced by the leak he observed reported in the
072511 - invoice, ref DRT 2 4444, per above discussion with Carl? ref SDS 0
072512 - 7872
072513 -
072514 - Ron showed the filter that was replaced with the service. There was no
072515 - evident damage to the filter. Ron wiped his finger across a metal
072516 - surface and showed it is covered with an oily substance, as would be
072517 - expected for a filter of transmission oil.  It was not clear if this
072518 - substance was different from what it should be if the filter did not
072519 - need to be replaced.
072520 -
072521 - Ron explained this filter is smaller and has a different bracket.  He
072522 - was unable to explain how the new design improves upon the prior
072523 - version, but indicated his belief that it is a better filter, apart
072524 - from being new.
072525 -
072526 - I was very pleased with his help and impressed by his expertise.
072527 -
072528 -  ..
072529 -
072530 - Millie pointed out that they forgot to give us a next service
072531 - sticker.
072532 -
072533 -      [On 970211 received sticker calling for next serviced at 56587
072534 -      miles, ref SDS 28 9976]
072535 -
072536 -
072537 -
072538 -
0726 -

SUBJECTS
Brakes

0804 -
080401 -  ..
080402 - Brake Inspection
080403 -
080404 - Follow up ref SDS 20 6822.
080405 -
080406 - The reading on the brakes today is
080407 -
080408 -           FRONT BRAKES HAVE 6/32 LEFT
080409 -           REAR HAVE 8/32 LEFT
080410 -
080411 -   ...per ref DRT 2 4462.  On 960802, ref SDS 20 6822, S&C's inspection
080412 -   showed:
080413 -
080414 -           front 8-32
080415 -           rear 10-32
080416 -
080417 -   ..., and Carl hand wrote that 2/32 is the approximate time to
080418 -   replace brake linings. ref DRP 4 8500
080419 -
080420 -
080421 -
0805 -
0806 -

SUBJECTS
Millie's Mercury Sable, 940423
Replace 2 General Tires with Unocal, 961214
Safety Checks
Tires

1407 -
140701 -  ..
140702 - Tire Inspection
140703 -
140704 - Follow up ref SDS 26 8896.
140705 -
140706 - Per request above, ref SDS 0 1440, S&C's invoice shows...
140707 -
140708 -             TIRES HAVE 9/32 OF TREAD LEFT
140709 -             REAR HAVE 7/32 OF TREAD LEFT
140710 -
140711 -     ...and mileage of 53587 per ref DRT 2 4462.  It is assumed that
140712 -     the 9/32 reading is for the front tires, since there are only two
140713 -     choices.  At the inspection on 960802 when the mileage was 47211
140714 -     the invoice shows:
140715 -
140716 -             LF 8-32 LR 8-32 RF 9-32 RR 8 32
140717 -
140718 -     ...per ref DRP 4 3277.  This seems to compare with the reading
140719 -     today, 970121 per above, as follows:
140720 -
140721 -             LF 8-32 RF 9/32
140722 -             Both rear tires have 8/32 of tread left.
140723 -
140724 - Since the tires have not been rotated, because we just installed new
140725 - tires on the front, it appears that the rear tires have worn 1/32
140726 - since August, from 8 to 7, over a span of 6,000 miles, based on S&C's
140727 - invoice report, while the failed tire wore 8 or 9 32nds, 800% more.
140728 -
140729 -
140730 -  ..
140731 - Why Did General Tire Fail on 961214?
140732 -
140733 - Since S&C reported in the invoice dated 960802 that the front tires
140734 - had respectively 8 and 9 32nds of tread life, which was equal to or
140735 - greater than the tread life reported for the rear tires, how could the
140736 - right front tire wear out, as occurred on 961214, ref SDS 24 6892,
140737 - without the other tires incurring comparable wear, since all tires
140738 - performed the same level of effort, i.e., 6000 miles on the same
140739 - vehicle?
140740 -
140741 - Would not General Tire, or any tire manufacturer, wonder why one of
140742 - its tires experienced accelerated wear to complete failure from 8 or 9
140743 - 32nds over a 6000 mile exposure, when other tires only incurred a 1/32
140744 - wear, as shown by S&C's report?  Would they not be interested to know
140745 - what formula or manufacturing method enabled the other tires to
140746 - avoid failure, or alternatively what caused accelerated wear, as seems
140747 - to have occurred here?
140748 -
140749 - General Tire should advise if its testing shows that its tire can
140750 - change from 8 or 9 32nds to no tread during the time when the other
140751 - three tires experience a 1/32 tread wear, a difference of 800%.
140752 -
140753 - One explanation is that tread wear was inaccurately reported.
140754 -
140755 - Perhaps the older General Tires had less than 8 and 9 32nds of tread
140756 - life remaining on 960802, or perhaps the Hankook tires had more than
140757 - than 8 32nds of tread wear on 960802.  Normally it would be expected
140758 - that tires 3 years older and with 30K or so more miles would have less
140759 - tread than newer tires.  So, maybe there is simply another error in
140760 - capturing the record; except S&C's invoice says:
140761 -
140762 -        These are the correct readings SA 5 previous brake reading were
140763 -        not correct.  Todays readings are in fact accurate.
140764 -
140765 -    .., ref DRP 4 8500, referring to brake inspections, and thereby
140766 -    indicating a heightened focus on accuracy the day these readings
140767 -    were taken.  Was a special effort made to be correct for brake
140768 -    readings but not for tread wear?
140769 -
140770 -
140771 -  ..
140772 - Safety Inspection, Defective General Tire
140773 -
140774 - Received ref DRT 1 from Charles Mori responding to ref DIP 4 issued on
140775 - 961214, ref SDS 24, and to ref DIP 5 issued on 961227. ref SDS 25ref SDS 25 9976
140786 - and so may have been issued prior to receiving my letter, ref DIP 5.
140787 -
140788 - In any case it is unclear why S&C would not have our correct address,
140789 - since all of their invoices are correctly addressed, see for example,
140790 - ref DRT 2, and since our correspondence has our correct address.  On
140791 - the other hand a busy executive may not have used the company's
140792 - contact data base, and may have instead copied the address incorrectly
140793 - from another source.
140794 -
140795 -
140796 -
140797 - Adjustment Due from General?
140798 -
140799 - Charles indicates in his 961227 letter that no further action is
140800 - needed on the tire failure problem because it occurred at 50,000
140801 - miles. ref DRT 1 9987
140802 -
140803 - What is the expected or warranted mileage of these tires?
140804 -
140805 - Work with S&C on 951020 to correct an earlier problem on the other
140806 - General tire shows that Generals are warranted for 60,000 miles, not
140807 - 50,000, which Charles cites. ref SDS 8 2146  This is the same warranty
140808 - as the new Royal tires installed to replace the Generals on 961214,
140809 - ref SDS 24 9555.  The General Tire warranty replaces free of charge
140810 - including mounting and balancing, if there is a failure within the
140811 - 60000 mile warranty period, ref SDS 8 4209, as seems to have occurred
140812 - here. ref SDS 24 6892
140813 -
140814 - Charles' letter does not indicate whether General Tire was notified of
140815 - this record, i.e., that two of its tires failed prior to 60000 miles,
140816 - and that a tire wore 8/32s during the same time and over identical
140817 - conditions when three other tires wore only 1/32, as reported above.
140818 -
140819 -
140820 -  ..
140821 - Improving Preventive Maintenance
140822 -
140823 - S&C does not explain how the preventive maintenance effort can be
140824 - improved to avoid system failures through better inspection, as
140825 - discussed with Barbara on 951009. ref SDS 7 9533 and ref SDS 7 6937
140826 -
140827 - There was an inspection on 961104, when the mileage was 50200, see S&C
140828 - invoice ref DRP 5 4723.
140829 -
140830 - What did S&C observe on 961104 concerning accelerated tread wear on
140831 - this particular General tire?
140832 -
140833 - S&C's lack of notice on 961104 suggests the General tire failed over a
140834 - span of 1000 miles without any noticable difference in tread wear
140835 - between it and the other tires on 961104.  Is this really likely, or
140836 - was there an oversight?  How can we help improve upon this record?
140837 -
140838 - One approach would be for the S&C mechanic to review the record of
140839 - prior inspections, to ensure continuity in the data.
140840 -
140841 -     [On 970127 submitted warranty claim. ref SDS 27 9655]
140842 -
140843 -
140844 -
140845 -
1409 -
Distribution. . . . See "CONTACTS"