Pontiac FIREBIRD 1972 Service Manual page 393

SECTION 4 E
PROPELLER SHAFT
(DRIVE SHAFT)
The following caution applies to one or more steps in the assembly proce-
dure of components in this portion of the manual as indicated at appropri-
ate locations by the terminology "See Caution on page 1 of this Section".
CAUTION: THIS FASTENER IS A N IMPORTANT A TTA CHING
PART IN THAT IT COULD AFFECT THE PERFORMANCE OF
VITAL COMPONENTS AND SYSTEMS, AND/OR COULD RE-
SULT IN MAJOR REPAIR EXPENSE. IT MUST BE REPLACED
WITH ONE OF THE SAME PART NUMBER OR WITH A N
EQUIVALENT PART IF REPLACEMENT BECOMES NECES-
SAR Y. DO NOT USEA REPLACEMENTPAR T OFLESSER QUAL-
ITY OR SUBSTITUTE DESIGN TORQUE VALUES MUST BE
USED AS SPECIFIED DURING REASSEMBLY TO ASSURE
PROPER RETENTION OF THIS PAR T.
CONTENTS OF THIS SECTION
Trouble Diagnosis and Testing
..............................
4E- 1
Major Service
.........................................................
4E-5
General Description
................................................
4E-3 Dissassemble Universal Joints
............................
4E-7
Inspection
................................................................
4E-5 Assemble Universal Joints
..................................
4E-9
Minor Service
..........................................................
4E-5 Install Propeller Shaft Assembly
..........................
4E-10
Alignment
...........................................................
4E-5
TROUBLE DIAGNOSIS AND TESTING
LEAK AT FRONT YOKE
NOTE: An occasional drop of lubricant from
splined yoke is normal and requires no atten-
tion.
CAUSE
a. Rough outside surface on splined yoke.
b. Defective transmission rear oil seal.
KNOCK IN DRIVE LINE
CORRECTION
a. Replace seal if cut by burrs on yoke. Minor
burrs can be smoothed by careful use of crocus
cloth or honing with a fine stone. Replace yoke if
outside surface is rough or burred badly.
.
b. Replace transmission rear oil seal.
(Clunking noise when car is operated under floating con-
dition at 10 mph in high gear or neutral)