Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Dodge Durango 1998-2000 Approved Dodge Durango 1998-99 98DN_3
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DN DIFFERENTIAL AND DRIVELINE 3-1
DIFFERENTIAL AND DRIVELINE
CONTENTS
page page
194 FIA AXLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 FRONT AXLE DRIVESHAFTS . . . . . . . . . . . . . . . 15
8 1/4 AND 9 1/4 AXLE . . . . . . . . . . . . . . . . . . . . 53 PROPELLER SHAFTS . . . . . . . . . . . . . . . . . . . . . . 1
PROPELLER SHAFTS
INDEX
page page
GENERAL INFORMATION FRONT PROPELLER SHAFT . . . . . . . . . . . . . . . . 7
CENTER BEARINGS . . . . . . . . . . . . . . . . . . . . . . 2 REAR PROPELLER SHAFT . . . . . . . . . . . . . . . . . 7
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DISASSEMBLY AND ASSEMBLY
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DOUBLE CARDAN JOINT . . . . . . . . . . . . . . . . . 10
PROPELLER SHAFT JOINT ANGLE . . . . . . . . . . . 2 SINGLE CARDAN UNIVERSAL JOINT . . . . . . . . . 8
PROPELLER SHAFTS . . . . . . . . . . . . . . . . . . . . . 1 CLEANING AND INSPECTION
DIAGNOSIS AND TESTING PROPELLER SHAFT . . . . . . . . . . . . . . . . . . . . . 13
RUNOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 4 ADJUSTMENTS
UNBALANCE . . . . . . . . . . . . . . . . . . . . . . . . . ... 3 ADJUSTMENT AT AXLE WITH LEAF SPRINGS . 14
VIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . ... 3 CENTER BEARING ADJUSTMENT . . . . . . . . . . . 14
SERVICE PROCEDURES SPECIFICATIONS
DRIVELINE ANGLE MEASUREMENT TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PREPARATION . . . . . . . . . . . . . . . . . . . . . . ... 5 SPECIAL TOOLS
PROPELLER SHAFT ANGLE MEASUREMENT ... 5 PROPELLER SHAFT . . . . . . . . . . . . . . . . . . . . . 14
REMOVAL AND INSTALLATION
CENTER BEARING . . . . . . . . . . . . . . . . . . . . ... 8
GENERAL INFORMATION Tubular propeller shafts are balanced by the man-
ufacturer with weights spot welded to the tube.
PROPELLER SHAFTS The propeller shaft is designed and built with the
The propeller shaft (Fig. 1) transmits power from yoke lugs in line with each other. This is called phas-
one point to another in a smooth and continuous ing. This design produces the smoothest running con-
action. The shaft is designed to send torque through dition. An out of phase shaft can cause a vibration.
an angle from the transmission (transfer case on Before undercoating a vehicle, the propeller
4WD vehicles) to the axle. shaft and the U-joints should be removed if pos-
The propeller shaft must operate through con- sible. If removal is not possible, make sure that
stantly changing relative angles between the trans- the propellor shaft and u-joints are fully cov-
mission and axle. It must also be capable of changing ered. This will prevent the undercoating from
length while transmitting torque. The axle rides sus- causing an out of balance condition and vibra-
pended by springs in a floating motion. This means tion.
the propeller shaft must be able to contract, expand
and change operating angles when going over various CAUTION: Use exact replacement parts for attach-
road surfaces. This is accomplished through univer- ing the propeller shafts. This will ensure safe oper-
sal joints, which permit the propeller shaft to operate ation. The specified torque must always be applied
at different angles. The slip joints (or yokes) permit when tightening the fasteners.
contraction or expansion.
3-2 DIFFERENTIAL AND DRIVELINE DN
GENERAL INFORMATION (Continued)
Fig. 1 Front & Rear Propeller Shafts--4WD
CENTER BEARINGS When taking propeller shaft joint angle measure-
Vehicles equipped with a two-piece propeller shaft ments, or checking the phasing, of two piece shafts,
uses a rubber insulated center bearing. The bearing consider each shaft separately.
is used to support the shafts where they are joined Ideally the driveline system should have;
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