Chevrolet 1980 Light Duty Truck Service Manual page 280

3C-12 FRONT SUSPENSION
A B R A S I V E R O L L E R
P A T T E R N O N R AC ES A N D R O LL E R S C A U S E D BY
F IN E A B R A S IV E S .
C LE A N A L L P A R T S A N D H O U S IN G S . C H E C K S E A LS
A N D B E A R IN G S A N D R E P LAC E IF L E A K IN G , R O U G H
OR N O IS Y .
A B R A S I V E S T E P
P A T T E R N ON R O L L E R EN DS C A U S E D BY
F IN E A B R A S IV E S .
C L E A N A L L P A R T S A N D H O U S IN G S . C H E C K S EALS
A N D B E A R IN G S A N D R E P LA C E IF L E A K IN G , RO UG H
OR N O IS Y .
I N D E N T A T I O N S
S U R F A C E D EPR ES S IO N S ON RACE A N D R O L L E R S
C A U S E D B Y H A R D P A R T IC L E S OF F O R E IG N M A T E R IA L .
C L E A N A L L P A R T S A N D HO U S IN G S . C H E C K S E A LS
A N D R E P L A C E B E A R IN G S IF R O UG H OR N O IS Y .
FRONT WHEEL BEARING DIAGNOSIS
C O N S ID E R TH E F O L L O W IN G F A C T O R S W H EN D IA G N O S IN G B E A R IN G C O N D IT IO N :
1. G E N E R A L C O N D IT IO N OF A L L P A R T S D U R IN G D IS A S S E M B L Y A N D IN S P E C TIO N .
2. C L A S S IF Y T H E F A IL U R E W IT H TH E A ID OF T H E IL L U S T R A T IO N S .
3. D E T E R M IN E T H E CAU SE.
4. M A K E A L L R E P A IR S F O L L O W IN G R E C O M M E N D E D P RO C ED UR ES.
W E A R
M E T A L S M E A R S O N R O L L E R EN D S DUE TO O V E R H E A T ,
L U B R IC A N T F A IL U R E OR O V E R L O A D (W A G O N 'S)
R E P LA C E B E A R IN G
FOR PROPER L U B R IC A T IO N .
W E A R
B E A R IN G S U R F A C E S A P PEA R G R A Y OR G R A Y IS H
B L A C K IN C O LO R W IT H R E L A T E D E T C H IN G A W A Y
OF M A T E R IA L U S U A L L Y A T R O L L E R S PA C IN G .
R E PLAC E B E A R IN G S - C H E C K S E A LS A N D C H E C K
FOR PROPER L U B R IC A T IO N .
C A G E
W E A R A R O U N D O U T S ID E D IA M E T E R OF C AG E A N D
R O L L E R P O C KETS C A U S E D BY A B R A S IV E M A T E R IA L
A N D IN E F F IC IE N T L U B R IC A T IO N .
C L E A N R E L A T E D P A R T S A N D H O U SIN G S.
C H E C K S E A LS A N D R E P LA C E B E A R IN G S .
Fig. 3C-1 2 -B e a rin g Diagnosis Illustration A
G A L L I N G
C H E C K S E A LS A N D C H E C K
E T C H I N G
W E A R
fill ^
B E N T C A G E
C AG E D A M A G E D U E TO IM PR O PE R H A N D L IN G
OR T O O L USAG E.
R E PLAC E B E A R IN G .
F = = i
Y |
B E N T C A G E
C AG E D A M A G E D U E TO IM PR O PER H A N D L IN G
OR T O O L U SAG E.
M I S A L I G N M E N T
O U T E R R AC E M IS A L IG N M E N T DUE T O F O R E IG N
O BJEC T.
C L E A N R E L A T E D P A R T S A N D R E P LA C E B E A R IN G .
M A K E SURE R AC ES A R E P R O P E R LY S E A T E D .
LIG H T T R U C K S E R V IC E M ANUAL