Over-tightening

Examine the shaft sleeve in both gland areas for excessive wear caused by poorly lubricated or over-tightened packing. 

The most favoured knot when tying posts to stakes is the clove hitch. With practice, this knot is quickly effected and easy to undo. However, when tying candles, care should be taken so that the knot is not over-tightened, otherwise crushing of the firework tube might occur which could interfere with the ejection of the stars. 

Because of the fear of tourniquet-related limb damage, tourniquets are almost never used in civilian trauma cases and have been discouraged since World War II by many militaries due to the amputations suffered by soldiers when tourniquets were left on too long or over tightened. This practice was kept in place even though many if not most trauma specialists believed that if properly used, tourniquets saved lives. It was not until modem battlefield casualty studies were made that the need for tourniquets was reevaluated. 

The extraction cell is usually made of stainless steel, PEEK (polyether ether ketone), or any other suitable material that can withstand high pressure (up to 10,000 psi). It is fitted with fingertight frits, which eliminate use of a wrench and reduces the wear and tear that can result from over-tightening. Research indicates that the shape of the cell has little impact on the extraction efficiency [24], Short squat cells are preferred because they are easier to fill than the long thin ones. The extraction cell is placed in an oven that can heat up to 200° C. 

An exception to this rule would be if a two- or three-fingered support clamp was overly tightened on a glass tube, causing the tube s wall to crack. 

When clamping glassware (see p. 26) ensure that the clamp has a cork, rubber or plastic cushion in the jaws to prevent breakages. There must be no metal-glass contact and you must not over-tighten the clamp. 

Check for final fit and tighten the screwcap firmly, but do not over-tighten. 

Carefully place the cell holder top-plate on the top gasket, drop the locking nuts into place and carefully tighten each in rotation. These are safety nuts and if you over-tighten them or if the back- and top-plates are not parallel, they will spring loose to prevent the NaCI plates being crushed. 

Avoid physically mishandling columns banging, dropping, or over-tightening fittings. 

Rotor seal wear should not be over-tightened. 

Tighten the wing nuts by hand, and do not let the plate bend from over tightening. The plate should be straight across without the slightest induced curves. 

Corrosion Screw head plate hole Bent area Different alloy implants Over tightening screw Misalignment of screw Over-bent... 

Distortion of valve body due to weight of blow off pipe, over tightening of bolts. 

DO NOT OVER TIGHTEN TIE RODS. Figure 7 Adjusting tie rods. 

The threaded inlet/outlet connectors have no limiting stops. We found the small diameter tube awkward to tighten with fingers alone and with a small vise grip tool it is easy to over-tighten and stress the thin glass. 

Strip connectors or a chocolate block is a very common method of connecting conductors. The connectors are mounted in a moulded plastic block in strips of 10 or 12. The conductors are inserted into the block and secured with the grub-screw. In order that the conductors do not become damaged, the screw connection must be firm but not over-tightened. The size used should relate to the current rating of the circuit. Figure 4.12 shows a strip connector. 

A pillar terminal is a brass pillar with a hole through the side into which the conductor is inserted and secured with a set-screw. If the conductor is small in relation to the hole it should be doubled back. In order that the conductor does not become damaged, the screw connection should be tight but not over-tightened. Figure 4.12 shows a pillar terminal. 

Spills are likely to occur during the dispensing of liquids. Use approved self-closing faucets to minimize these spills. Swivel connection faucets will prevent leaks caused by over-tightening. Spill trays placed under the faucets will catch drips. When dispensing from vertically stored drums, use approved transfer pumps. 

---