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Safety with Cylinder Heads and Valves


Keep these 10 safety precautions in mind when working with cylinder heads, valves, valve springs, camshafts, and rocker arms.



1.  Always wear safety glasses around the shop.  Wear
    the glasses at all times while in the shop, even while
    looking up specifications, reviewing procedures, or
    working on cylinder head components.  Get in the
    habit of keeping the safety glasses on at all times.

2. The edges of the cylinder head may be very sharp
    because of the machined surfaces.  Be careful not
    to cut your fingers when handling the cylinder head.

3. During cleaning, pieces of carbon and soot are
    usually removed from the valves and cylinder
    heads.  Be careful not to breathe in the carbon dust.

4. When valves and valve springs are being removed
    or installed, the valve springs are depressed and
    under high pressure.  Make sure the valve spring
    compressor is secured correctly on the valve so the
    spring will not slip under pressure.  Your eyes and
    face may be injured if you are hit by a spring that
    has slipped out of the grasp of the tool.

5. Make sure that any electrical tools used for cleaning
    valves or cylinder heads are grounded correctly. 
    Never use an electrical tool while standing in wet
    areas in the shop.

Back to Safety

6.  Often the top edges of used lifters are very
     sharp.  This is caused by the cam lobe wearing on
     the top of the lifter.  Be careful not to cut your
     fingers on these sharp edges when removing lifters.

7.  When installing a camshaft, be careful not to pinch
     your fingers between the cam bearings and the
     cylinder block holes.

8.  Make sure that all tools used for working on the
     camshaft and valves drive mechanisms are clean
     and free of dirt and grease. 

9.  When grinding valves or using other electrical
     equipment, never string an extension cord across
     the floor.

10. Many of the bolts and nuts require high torque
      specifications.  Always use the correct torque
      wrench, and know the torque specifications when
      working with cylinder heads
.
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