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Figure 1 Schematic diagram of mechanical structures Symptoms: a 2003 article Shanghai Public B51.8T Passat sedan, equipped with ZF of Germany produced the 01V type (5HP-19FL) Hand / from one 5-speed electronically controlled automatic Transmission , Mileage to 120,000 km. The car’s transmission had been repaired in the other repair shop, to repair the fault is no reverse gear, the impact of forward gears, no reptiles and transmission within Abnormal noise .

Troubleshooting: plant maintenance personnel in the next car after the repair, but repairs to a certain degree it difficult to continue. I take car to the maintenance staff asked them about their maintenance through. Maintenance personnel is that statement: First connection failure Diagnostic On the transmission electronic control system was tested, only found a P0730 fault code. When checking the transmission oil level and found missing at least 2L of about ATF, ATF again added test, fault phenomenon remains intact. Because the new automatic transmission plant maintenance experience failure is not very rich, so can only do simple dismantling. Remove the transmission oil pan, ATF found that black and pollution, but did not find too many Wear and tear Particles, so they remove transmission hydraulic control valve body to decompose wash, in the cleaning process does not find all slide valve have wear and cable wiring. Refitted after the test, the results reverse gear still no crawling process, only the increase Accelerator To 2000r/min be driving around the same time, there is creeping forward while blocking cold hot car is not crawling, it does not conduct road tests. .

In this case, we are involved in vehicle maintenance failure. The road test, the basic failure phenomena by the reaction with the repair shop the fault phenomena coincide. Thus we first connection failure diagnostic apparatus, check the transmission of the electronic control system, where its fault memory read out the P0730 fault code, meaning the fault code information for the transmission gear ratio error. Transmission control unit through the receiver input shaft speed Sensor G182 and G195 output shaft speed sensor to calculate the transmission ratio of each gear, there is usually this fault code the control unit, sensors, circuits and mechanical components within the transmission slipping problem. By reading the transmission of dynamic data and the actual transmission failure phenomenon observed, we are locked into the point of failure in the mechanical and hydraulic aspects, it was decided to dismantle transmission.

Transmission assembly in the decomposition, we found transmission within groups of friction plate burning, transmission mechanical components of the composition shown in Figure 1. In which the active component responsible for reverse gear clutch B group, responsible for 2,3,5-block Brake Components of the C group brake block for 1-4 (low block and direct block) A group of active components responsible for 4,5-gear clutch, and the active component is more severely burning the clutch E group, the most serious is the burning of the clutch B group and A group clutch. Through careful examination, can determine the B group of clutch burning because the group clutch wear gap is too big, forcing the clutch piston stroke to increase, establish a working pressure when the clutch piston stroke exceeds the limit due to campaigns, there spill reverse gear malfunction. The forward gears without crawling is mainly due to group A clutch piston seals caused minor damage relief. As a result, can determine the transmission electronic control system fault code stored P0730 reason is slipping transmission.

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You cannot avoid auto repair or truck repair no matter how well you maintain your vehicle. You will still need to bring it to your automotive service center for auto inspection, engine repair or car transmission system repair some time. Perhaps you may need to have some of your car parts replaced with AC Delco car parts, or perhaps you will just need auto oil change. Whatever automotive service you will need, your mechanic will either use hourly billing or flat rate billing. Both are acceptable billing methods in Tampa. But what difference does it make?

Hourly billing is self-explanatory. Your automotive mechanic and automotive service center will bill you for the exact number of hours spent working on your vehicle. Flat rate billing, on the other hand, is based on how much time a flat rate book says a certain type of repair takes when done by the average professional mechanic. The flat rate book is an automotive industry standard that is used everywhere and not just in Tampa.

Flat rate billing becomes a problem when some clients believe that they are being scammed when they are billed for a three-hour repair that the mechanic finishes in just two hours. The clients think they should, therefore, be billed only for those two hours. They should take into consideration, though, that the three hour period specified in the flat rate book is the industry standard in doing such type of repair. This means that the average professional skilled mechanic will take three hours to do the job properly. If the particular mechanic was able to finish it in two hours, and the repair was done well, it just means that this mechanic is exceptionally skilled and perhaps has had long experience in such types of repair. The time and study he has invested in preparing himself professionally up to that point accounts for the speed with which he did the task. It is only fair that he be duly rewarded for it.

If clients fear being scammed, that could be possible with hourly billing, as well. Without the benefit of a flat rate book, clients will not have any idea on how much time it should really take to do a certain type of repair. For all you know, the automotive mechanic could spend four hours on a task that should take only an hour. Even if you do have a flat rate book at hand, the automotive mechanic who is being paid by the hour will not have any incentive to do the job faster even if he has the capability to do so. It will be to his best interest to extend the task to the maximum time possible.

With flat rate billing, therefore, both the client and the automotive mechanic are at an advantage. The mechanic can work at his real pace and if he finishes earlier than expected then the client can drive off much earlier, too. The mechanic can then take on other jobs and the client has lost less downtime.

There are times when the mechanic can even be at a disadvantage with the flat rate billing system. With very new car systems, sometimes the manufacturers estimate of how long a certain repair should take is quite tight considering the fact that mechanics have not had enough time yet to master its innovations. It would not be farfetched under such scenarios for mechanics to take even more time than specified in the book. This means they are on the losing end of the deal.

So if your automotive mechanic in Tampa uses flat rate billing, do not blame him for it. You are not being shortchanged for as long as you are getting the highest quality of auto repair or truck repair.