People who've never designed a product don't understand that engineering and design are all about compromises. A vehicle has to meet a number of criteria to compete in the marketplace, of which serviceability is just one. Most of the major vehicle characteristics are set in concrete before subsystems such as brakes and suspension are designed. Also, engineers are under pressure to re-use off the shelf parts rather than design custom solutions.
So, if you were the brake system engineer on this truck, how would you solve the serviceability issue? There's not enough room between the bleeder and springs, how do you fix that? Increase the wheel track by making the axle wider? Sorry, but the track was specified a long time ago and is not something you can change. How about moving the springs inward? Possible, but it means significant changes to the frame, plus it could affect the stability of the vehicle. Make the brakes narrower? The brakes are as wide as they need to be to provide adequate performance. You suggest using a longer bleeder, but bleeders are standard parts and you'll have a hard time convincing the chief vehicle engineer that a special one is required.
It's quite possible the bleeder wasn't recognized as a serviceability issue. After all, brakes have to be bled at the factory, and no manufacturing engineer wants the bleeder to be hard to access. Most likely it was assumed that the bleeder would usually be accessed with the wheels off, making it much easier to get to. Quite frankly, I don't recall working on many vehicles where the drum brake bleeder was easy to get to.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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