Vibration Analysis - Engine Balance

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Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. If sufficient clearance exists to separate the transmission torque converter from the engine flywheel/flexplate, then further tests can be used to isolate the transmission from the engine.
  2. An engine flyw...

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Service Manual Table of Contents

Document Tags

Document Title: Vibration Analysis - Engine Balance

diagnostic

table

sufficient

clearance

transmission

torque

converter

engine

flywheel

flexplate

excessive

lateral

runout

combined

mass

produce

disturbance

loose

crankshaft

cracked

damaged

determine

indexing

balance

rear

placing

electronic

vibration

analyzer

sensor

onto

underside

edge

clutch

pressure

plate

driven

missing

weights

springs

cracks

warpage

damage

analysis

step

available

aids

vehicle

equipped

support

lifting

jacking

remove

cover

secure

from

position

lower

start

inspect

exhibit

following

looseness

conditions

with

block

wheels

apply

service

park

brake

scan

tool

installed

place

neutral

slowly

increase

level

noticeable

record

obtained

most

dominant

frequency

reading

significantly

reduced

eliminated

replace

complete

replacement

index

install

disturbance engine

loose engine

underside engine

clutch driven

driven plate

plate engine

engine crankshaft

missing balance

balance weights

plate clutch

vibration analysis

vibration diagnostic

diagnostic aids

step support

support vehicle

vehicle lifting

jacking vehicle

lower vehicle

start engine

looseness engine

with scan

installed start

place transmission

transmission neutral

neutral park

increase engine

disturbance noticeable

record engine

obtained scan

tool most

reading obtained

disturbance significantly

inspect engine

inspect clutch

loose damaged

damaged clutch

sufficient clearance exists

engine engine flywheel

mass transmission torque

produce disturbance engine

disturbance engine flywheel

flywheel flexplate loose

flexplate loose engine

onto underside engine

clutch driven plate

pressure plate engine

plate engine flywheel

indexing pressure plate

pressure plate flywheel

engine flywheel loose

flywheel loose engine

loose engine crankshaft

that cracked damaged

cracked damaged missing

damaged missing balance

missing balance weights

pressure plate clutch

plate clutch driven

driven plate loose

warpage damage missing

damage missing balance

produce disturbance mass

imbalanced produce disturbance

engine crankshaft balancer

engine accessory isolation

vibration diagnostic aids

step support vehicle

support vehicle lifting

vehicle lifting jacking

lifting jacking vehicle

flywheel flexplate torque

flexplate torque converter

step flywheel flexplate

flywheel flexplate avoid

flexplate avoid accidental

avoid accidental engagement

start engine allow

engine allow engine

inspect flywheel flexplate

flywheel flexplate exhibit

following looseness engine

looseness engine crankshaft

with scan tool

installed start engine

place transmission neutral

transmission neutral park

slowly increase engine

obtained scan tool

scan tool most

frequency reading obtained

disturbance significantly reduced

inspect engine flywheel

engine flywheel clutch

flywheel clutch surface

inspect clutch pressure

step remove clutch

remove clutch pressure

driven plate from

engine flywheel following

flywheel following looseness

balance weights inspect

weights inspect clutch

following loose damaged

loose damaged clutch

damaged clutch driven

driven plate damper

damaged clutch pressure

pressure plate diaphragm

balance weights conditions

weights conditions exist