Specifications

OCTE SAFEdoc
TRANS
Valve Grinders
1. WEAR PERSONAL PROTECTIVE EQUIPMENT INCLUDING SAFETY GLASSES when
using a valve grinder. Ensure participants and/or observers are wearing personal protection.
2. Make certain your work area is clean and clear of debris.
3. Follow the valve grinder’s operational procedure as provided by the manufacturer of the
machine. Some machines use a combination of air and electricity to function.
4. Safely use a valve spring compressor to remove valves from cylinder head.Remove springs in
an area away from people or sensitive equipment as the SPRINGS ARE UNDER
CONSIDERABLE COMPRESSED FORCE.
5. Label, clean, and de-carbonize all valves and components using approved solvents and
cleaning agents.
6. Determine automobile or vehicle manufacturer’s specifications for valve and seat grinding and
accurately set machine to desired angles.
7. With valve grinding machine off, lock valve into holding chuck. KEEP HANDS AND FINGERS
AWAY FROM THE GRINDING STONE AND ROTATIONAL CHUCK AREA WHEN THE
MACHINE IS OPERATIONAL.
8. Stop machine and safely remove valve. Inspect finished condition of valve face.
9. Safely use stem grinder to “true” the end of the stem. Clean and de-carbonize cylinder head
using a wire brush on a drill and approved solvents and cleaning agents.
10. Determine the correct size mandrel and seat facing stones for seat grinding. CHECK
CONDITION OF STONES FOR WEAR AND CRACKING.
11. Use the seat grinding drill to true stones and grind the seats to desired angles. BE AWARE
OF THE HIGH-SPEED ROTATIONAL MOTION OF THIS TOOL.
12. Always inform the teacher when you are about to begin work.
AT ALL TIMES – IF IN DOUBT, SEE YOUR INSTRUCTOR
Transportation SAFEdoc Page 40