4. On the CCE-IHC 20 Ton Dump Truck, the hydraulic oil filter for the dump body hoist system has been rigidly fastened
by the return pipe connection to the hydraulic oil reservoir. Further, the filter is bolted to a plate and strap-mount welded
to the headsheet of the reservoir. Therefore, like your head and body, the hoist filter and reservoir must vibrate in a
manner that is the same. The filter housing cannot be braced into the truck frame since the frame and reservoir do not
vibrate in the identical manner.
5. Since the hoist system hydraulic oil filter is solidly mounted on the hoist oil reservoir by a rigid return pipe connection,
the filter must move identical to the reservoir only. The truck frame flexes and vibrates in an different manner than the
heavy hoist reservoir. The function of all braces are to "hold". Braces also transfer their holding forces. Now then, by
adding filter braces into the truck frame, you would actually be trying to hold the reservoir from moving with respect to the
truck frame. Since the large reservoir mounts can't stop this difference, small braces won't either. The movement
restriction of the filter from the added braces would try to, first, steady the filter and then, second, pass the forces on into
the rigid return pipe connection and then, third, steady the forward end of the reservoir. The leaking was caused by the
movement between the filter and the reservoir in the first place, so any added braces that move differently than the
reservoir would make the problem worse. The solution is to steady the filter on the reservoir so it vibrates as a unit and
not differently.
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