Dodge Nitro. Manual — part 555

13. Install propeller shaft bolts and tighten to specifications.

14. Fill differential with gear lubricant.

15. Install skid plate, if equipped.

ADJUSTMENTS

FRONT AXLE - 186FIA

Fig. 80: Pinion Gear ID Numbers
Courtesy of CHRYSLER LLC

Ring and pinion gears are supplied as matched sets. Gear match numbers (3) for the ring and pinion gear are
etched onto each gear. A plus (+) number, minus (-) number or zero (0) is etched into the face of the pinion gear
(2). This number is the amount (in thousandths of an inch) the depth varies from the standard depth setting of a
pinion etched with a (0).

If installing a new gear, note the depth variance number of the original and replacement pinion. The numbers
represent thousands of an inch deviation from the standard. Add or subtract this number from the original depth

2007 Dodge Nitro R/T

2007 DRIVELINE Differential & Driveline - Nitro

shim/oil slinger to compensate for the difference in the depth variances. If the number is negative, add that
value to the required thickness of the depth shims. If the number is positive, subtract that value from the
thickness of the depth shim.

Compensation for pinion depth variance is achieved with a select shim/oil slinger. The shims are placed
between the rear pinion bearing and pinion gear head.

Pinion Gear Depth Variance Chart : Note where Old and New Pinion Marking columns intersect.
Intersecting figure represents plus or minus the amount needed.

PINION GEAR DEPTH VARIANCE

PINION DEPTH MEASUREMENT

Original Pinion Gear

Depth Variance

Replacement Pinion Gear Depth Variance

-4

-3

-2

-1

0

+1

+2

+3

+4

+4

+0.008 +0.007 +0.006 +0.005 +0.004 +0.003 +0.002 +0.001

0

+3

+0.007 +0.006 +0.005 +0.004 +0.003 +0.002 +0.001

0

-0.001

+2

+0.006 +0.005 +0.004 +0.003 +0.002 +0.001

0

-0.001

-0.002

+1

+0.005 +0.004 +0.003 +0.002 +0.001

0

-0.001

-0.002

-0.003

0

+0.004 +0.003 +0.002 +0.001

0

-0.001

-0.002

-0.003

-0.004

-1

+0.003 +0.002 +0.001

0

-0.001

-0.002

-0.003

-0.004

-0.005

-2

+0.002 +0.001

0

-0.001

-0.002

-0.003

-0.004

-0.005

-0.006

-3

+0.001

0

-0.001

-0.002

-0.003

-0.004

-0.005

-0.006

-0.007

-4

0

-0.001

-0.002

-0.003

-0.004

-0.005

-0.006

-0.007

-0.008

2007 Dodge Nitro R/T

2007 DRIVELINE Differential & Driveline - Nitro

Fig. 81: Pinion Gear Depth Tools
Courtesy of CHRYSLER LLC

Measurements are taken with pinion bearing cups and pinion bearings installed in the housing. Take
measurements with Pinion Gauge Set and Dial Indicator C-3339A (1).

1. Assemble Pinion Height Block 6739 (3), Pinion Block 8804 (6) and rear pinion bearing onto Screw 6741

(5).

2. Insert height gauge components into the housing through pinion bearing cups.

3. Install front pinion bearing and Cone-nut 6740 (4) onto the screw. Tighten Cone-Nut until Torque To

Rotate screw is 1.7 N.m (15 in. lbs.).

2007 Dodge Nitro R/T

2007 DRIVELINE Differential & Driveline - Nitro

Fig. 82: Positioning Arbor Discs 6927A And Arbor D-115-3 Into Housing Bearing Cradles
Courtesy of CHRYSLER LLC

4. Position Arbor Discs 6927A (1) and Arbor D-115-3 (2) into the housing bearing cradles.

Fig. 83: Installing Differential Bearing Caps On Arbor Discs And Tightening Bolts
Courtesy of CHRYSLER LLC

5. Install differential bearing caps (1) on Arbor Discs and tighten bolts (2) to 61 N.m (45 ft. lbs.).

2007 Dodge Nitro R/T

2007 DRIVELINE Differential & Driveline - Nitro