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Automotive Troubleshooting
|
| Problem |
Possible Causes |
Suggested Correction |
Chatter
on Cam Nose |
Interference of rocker bar motion
Scored bearings
Insufficient lubrication
Insufficient rocker tension
|
Sludge jamming motion, clean
or replace
Check for irregularities in
rocker bearings
Tight bearings in rocker bar -
lubricate
Tighten rocker tension |
Irregular Ramp
Contour |
Interference of rocker motion
Loose bearings
Insufficient contact between
master cam and follower
|
Sludge jamming motion or scored bearing;
clean and/or replace; lubricate
Check bearings for
excessive wear
Ensure positive contact
|
| Poor Quality |
Wheel too coarse
Wheel too hard
Poor quality of dressing
Dirty coolant
Poor coolant concentrate
|
Use finer grit wheel
Use softer grade of grinding
wheel
Ensure quality diamond and
dress technique
Ensure clean coolant and
change filter regularly
Check coolant |
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