Andrew/Whittet-Higgins: One pitfall is not allowing the needed spacing in the assembly housing. If the components are not locked together properly, the machinery can fail prematurely. A second pitfall is assuming that a particular torque measurement for one component is correct for the entire assembly.Jim/Stafford: * Using a set-screw collar on a hardened shaft. The screw does not "set," and holding power is greatly diminished.* Using a set-screw collar on thin-wall tubing, which can permanently distort the tubing.* Specifying too thin a width on a clamp-type collar, leaving it too weak to resist distortion when the clamp-screw is tightened.* Specifying too thin a clamp-slot on threaded shaft collars where the collar must flex more in order to adequately clamp onto the threaded shaft.

On some systems, a portion deltadrillpresspaypal of the fuel is used deltadrillpresspaypal for lubrication and cooling. This fuel bypasses the nozzle tip and returns to the fuel tank.Let''s take a quick look at the individual components that make up the fuel system.* Fuel Tanks -- All fuel tanks have a fuel intake fitting on top of the tank for filling and a drain or outlet fitting on the bottom. One or two additional fuel fittings may be found for returning unburned fuel to the tank.Fuel tanks are not trouble-free components. Metal tanks will eventually rust. The rust, combined with water from condensation, forms a mud inside the tank. Sludge forms in the tank when unburned carbon from injector nozzles is carried back deltadrillpresspaypal to the tank with overflow fuel and combines with water. Thin flakes of hardened mud or sludge can easily plug deltadrillpresspaypal the fuel outlet deltadrillpresspaypal hole. This usually occurs when the tank is severely shaken.

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