Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 299

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 RAC ES A N D R O L L E R S 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 TS 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 .
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 ENDS 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 AR TS A N D H O U S IN G S . C H E C K SEALS
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 , R O 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 ESS 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 LE A N A L L P A R T S A N D HOU SIN G S. C H E C K S E A LS
A N D R E PLAC E B E A R IN G S IF R O U G H OR N O IS Y .
LIG H T TRU CK SER V ICE MANUAL
FRONT WHEEL BEARING DIAG NO SIS
C O N S ID E R T H 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 INS PE CTIO N.
2. C L A S S IF Y T H E F A IL U R E W IT H T H 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 TH 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 PR O C ED U RES.
W E A R
M E T A L S M E A R S ON R O L L E R ENDS D U E 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 PLAC E B E A R IN G ■ ■ C H E C K S E A LS A N D C HECK
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 PP EAR 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 SPAC IN G .
REPLAC 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 EAR 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 PO 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 TS A N D H O U SIN G S.
C H EC 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 r in g D ia g n o s is Illu str atio n A
G A L L I N G
E T C H I N G
W E A R
% r=%
gsg
B E N T C A G E
C AG E D A M A G E D U E TO IM P R O PER H A N D L IN G
OR T O O L USA G E.
R E P LA C E B E A R IN G .
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 D U E TO F O R E IG N
OBJECT.
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 SU RE RACES A R E P R O P E R L Y SEATED .