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DRIVE SHAFTS AND UNIVERSAL JOINTS
16 -
STEP
DRIVELINE
VIBRATION
DIAGNOSIS
SEQUENCE
RESULT
WHEEL/TIRE CONDITION
1. INSPECT FOR BENT, CRACKED WHEELS
AND CUPPED OR DAMAGED TIRES.
2. INSPECT TOR MISMATCHED TIRE SIZES
OR TREAD PATTERNS.
3. CHECK AND CORRECT TIRE INFLATION
PRESSURES AS NEEDED.
/
v > \
4. ROAD TEST IF REPAIR OR R E P l A C B v ^ N T - ^ c ^ ^ J
WAS NEEDED.
CORRECTION NEEDED—(
Q | C
ROAD TEST
1
CORRECTION
NOT NEEDED
CORRECTION
NEEDED—
ROAD TEST
O
ROAD TEST
DRIVE 5-10 MPH (8-17 KM/H) ABOVE THE VIBRATION
RANGE — SHIFT TO NEUTRAL, AND
LET THE ENGINE IDLE AND COAST
THROUGH THE VIBRATION RANGE.
ROAD
TEST
r— VIBRATION GONE
VIBRATES DURING
COAST
VIBRATION STOPS
DURING COAST
(IN NEUTRAL)
OK
o
WHEEL/TIRE BALANCE
ADD BALANCE
WEIGHTS HERE
HEAVY
?SPOT
SPINDLE
TIRE OR WHEEL TRAMP,
OR WHEEL HOP
CORRECTIVE WEIGHT
LOCATION
ADD BALANCE
WEIGHTS HERE
? OF SPINDLE
TO
HEAVY SPOT WHEEL
CORRECTIVE WEIGHT
SHIMMY AND VIBRATION LOCATION
STATIC UNBALANCE
CORRECT AS NECESSARY AND ROAD
TEST (MAX. WHEEL WEIGHT ALLOWANCE
IS 10 OZ. (283 GRAMS)
DYNAMIC UNBALANCE
IF CORRECTION
WAS NEEDED-
REPEAT ROAD TEST
ROAD TEST OR
NO CORRECTION
NEEDED.
OK
STOP
J8916-11
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