GMC 1986 P-Truck Service Manual page 411

The following " Notice" applies to one or more steps in the assembly procedure of components in this portion of
the manual as indicated at appropriate locations by the terminology: " NOTICE: See 'Notice' on page 4C-1 of this
section."
NOTICE: All front axle fasteners are important attaching parts in that they could affect the performance of
vital parts and systems, and/or could result in major repair expense. They must be replaced with one of the
same part number or with an equivalent part if replacement becomes necessary. Do not use a replacement
part of lesser quality or substitute design. Torque values must be used as specified during reassembly to
assure proper retention of all parts.
SUBJECT
D e s c rip tio n .................................................................................................................................................................. 4C- 2
Diagnosis Of The Front A xle .................................................................................................................................... 4C- 2
Road T e s t ................................................................................................................................................................ 4C- 2
Tire N o is e s .............................................................................................................. ............................................... 4C- 2
Engine or Exhaust N o is e s .................................................................................................................................... 4C- 2
Test For Wheel Bearing N o is e ........................................................................................................................... 4C- 2
Test For Differential Bearing N o is e ...................................................................................................................4C- 2
Test For Pinion Bearing N o is e ........................................................................................................................... 4C- 2
On-Vehicle Service..................................................................................................................................................... 4C- 3
Axle Shaft Replacement........................................................................................................................................ 4C- 3
Front Axle Assembly Replacement.....................................................................................................................4C- 4
Axle Joint Component R e p la ce m e n t................................................................................................................ 4C- 5
Locking Hub Component R eplacem ent............................................................................................................ 4C- 5
Autom atic Hub To The Wheel A d ju s tm e n t......................................................................................................4C-
Manual Locking Hub R eplacem ent.....................................................................................................................4C-
Manual Locking Hub Rebuild P ro c e d u re .......................................................................................................... 4C-
S pecifica tio ns..............................................................................................................................................................4C-10
Special T o o ls .............................................................................................................................................................. 4C-10
SECTION 4C
FRONT AXLE
CONTENTS
4C-1
PAGE
8
8
8