NHTSA ID Number: 10180995
Manufacturer Communication Number: 20-DS-002H
TSB/Document Date: 2020-10-08
Summary
The bulletin describes the procedure to measure and set propeller shaft angles to optimize driveline vibration performance on certain 2015-2016MY 3.8L AWD G80 (DH) vehicles.
Front Propeller Shaft Slope
Θ2
A
Rear Propeller Shaft Slope
TSB #: 20-DS-002H
Page 6 of 12
SUBJECT:
15-16MY GENESIS
(DH) AWD PROPELLER SHAFT
SUBJECT:
1.
Remove the center muffler assembly
according to the vehicle shop manual.
* Engine Mechanical System > Intake
and Exhaust System > Muffler
2.
Place and hold the protractor to the
transmission LH flange face to set the
transmission reference angle to zero
(0.0).
Press the All Zero button to set zero
(0.0).
TSB #: 20-DS-002H
Front of
vehicle
Page 7 of 12
SUBJECT:
15-16MY GENESIS (DH) AWD PROPELLER SHAFT
SUBJECT:
3a.
▶ Measure (Θ1): Angle Between
Engine/Trans To Front Shaft Section
After setting the zero (0.0) reference
angle at the transmission flange, move
the protractor to the front portion of the
propeller shaft.
Verify the protractor is positioned
properly on the propeller shaft, with the
length of the protractor parallel to the
propeller shaft tube, and the protractor
body pointed at a right angle to the
ground.
3b.
Refer to the image to the right.
After properly positioning the protractor,
check the angle measurement reading
on the display and record the value. Do
not move the protractor.
▼
> Front Tube Angle (Θ1) measurement
value: 1.2
NOTICE
Angle Specifications (degrees):
Θ1: -0.6 to 0.4
3c.
Without moving the protractor, reset the
zero (0.0) reference value after recording
Θ1.
TSB #: 20-DS-002H
Page 8 of 12
SUBJECT:
15-16MY GENESIS (DH) AWD PROPELLER SHAFT
SUBJECT:
4a.
▶ Measure (Θ2): Angle Between Front
and Rear Shaft Sections
Move the protractor to the rear section of
the propeller shaft.
Verify the protractor is positioned
properly on the propeller shaft, with the
length of the protractor parallel to the
propeller shaft tube, and the protractor
body pointed at a right angle to the
ground.
Refer to the reference image on the right.
4b.
After properly positioning the protractor,
check the angle measurement reading
on the display and record the value.
▲
> Rear Tube Angle (Θ2) measurement
value: 0.5
NOTICE
Angle Specifications (degrees):
Θ2: -0.3 to 0.7
5.
If required, install washers to adjust angles Θ1 and Θ2 to specification.
If the greatest angle change needed is to adjust Θ2 in the negative (-) direction, follow the
procedures described in Case 1 below.
If the greatest angle change needed is to adjust Θ1 in the positive (+) direction, follow the
procedures described in Case 2 below.
TSB #: 20-DS-002H
Page 9 of 12
SUBJECT:
15-16MY GENESIS (DH) AWD PROPELLER SHAFT
SUBJECT:
6a.
▶ Case 1 – Install flat washers at center support bearing.
Install washers at the propeller shaft center support bearing when the largest angle change needed is
to adjust Θ2 in the negative direction.
NOTICE
Use a screw-jack to carefully support the propeller shaft during this procedure. Do
not allow the propeller shaft to fall onto the screw jack. Any damage to the propeller
shaft may cause an imbalance.
6b.
Remove the propeller shaft center
bearing bolts.
TIGHTENING TORQUE
lb.ft
kgf.m
N.m
6c.
• 36.1 - 47.0
• 5.0 - 6.5
• 49.0 - 63.7
Install the washers above the center
bearing mounting bracket.
NOTICE
A total of up to 3 washers is
possible on each side. Use an
equal number of washers on each
side.
Each washer will change the angles of Θ1
and Θ2 by the amount of degrees shown in
the table below. Add or subtract the angles
shown from the measured angles to
determine if the angles will be within
specification.
Θ1
Θ2
SPEC
- 0.6 To 0.4
- 0.3 To 0.7
1 WASHER
+ 0.14
- 0.18
2 WASHERS
+ 0.37
- 0.55
3 WASHERS
+ 0.6
- 0.92
* CHANGE OF Θ1, Θ2 ANGLE (degrees)
TSB #: 20-DS-002H
Page 10 of 12
SUBJECT:
15-16MY GENESIS (DH) AWD PROPELLER SHAFT
SUBJECT:
7a.
▶ Case 2 – Install flat washers at the transmission mounting bracket.
Install washers at the transmission mounting bracket when the largest angle change needed is to
adjust Θ1 in the positive direction.
NOTICE
Use a screw-jack to support the transmission during this procedure.
7b.
Remove the T/M mounting bracket.
TIGHTENING TORQUE (all circled
fasteners):
lb.ft
kgf.m
N.m
7c.
• 36.1 - 47.0
• 5.0 - 6.5
• 49.0 - 63.7
Install the washers above the T/M
mounting bracket and the insulator.
NOTICE
A total of up to 2 washers is
possible in each location. Use an
equal number of washers at each
location.
Each washer will change the angles of Θ1
and Θ2 by the amount of degrees shown in
the table below. Add or subtract the angles
shown from the measured angles to
determine if the angles will be within
specification.
Θ1
Θ2
SPEC
- 0.6 To 0.4
- 0.3 To 0.7
1 WASHER
+ 0.36
- 0.14
2 WASHERS
+ 0.88
- 0.51
* CHANGE OF Θ1, Θ2 ANGLE (degrees)
TSB #: 20-DS-002H
Page 11 of 12
SUBJECT:
15-16MY GENESIS (DH) AWD PROPELLER SHAFT
SUBJECT:
8.
After installing the washers to adjust the propeller shaft angles within specification,
reinstall the removed parts in reverse order of removal.
9.
Follow steps 1 through 4 to measure Θ1 and Θ2 again to verify the angles are within
specification.
10.
Perform a road test to evaluate vibration. If the vibration is resolved, the service
procedure is complete.
If the vibration is not resolved, inspect other areas of the vehicle for potential vibration
sources.
TSB #: 20-DS-002H
Page 12 of 12
SUBJECT:
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TSB/Document ID: 20-DS-002H
Replacement Service Bulletin Number:
MFR Communication Date: 2020-09-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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