Angle chart, Installation techniques u-joint operating angles, Figure 4 – Spicer Driveline Installation Service Manual User Manual
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Installation Techniques
U-Joint Operating Angles
Determining the universal joint operating angles on a driveshaft that is straight when viewed from the side and offset when viewed
from the top requires the use of a special chart (See Angle Chart). In this type of application, the centerlines of the connected
components must be parallel when viewed from the top as shown. These angles also should be small and equal within 1 degree.
(See Fig. 4)
Measure dimensions "A" and "B" shown in figure 4. Use the instructions in the angle chart below to determine the size of the angle.
Look at the Angle Chart and note that the smaller the offset, the smaller the resultant angle.
To reduce the possibility of vibration, keep any offset between connected points to a minimum.
There are two things you can do to always make sure Single Plane angles are SMALL and EQUAL: Make sure the transmission
and axle are mounted so their centerlines are parallel when viewed from both the side and the top. Make sure the offset between
them is small in both views.
ANGLE CHART
Figure 4
Axle
Angles in Top View
Engine
Trans.
x
B
x
A
1.0
o
2.0
o
70
60
50
40
30
20
10
1
2
3
4
5
6
7
8
9
10
11
12
3.0
o
4.0
o
5.0
o
6.0
o
7.0
o
8.0
o
9.0
o
10.0
o
11.0
o
12.0
o
13.0
o
14.0
o
15.0
o
Dimension A (inches)
D
imension
B
(in
ches)
Op
er
ating
A
ngle
x
For Driveshafts Having An Angle in the Top View
Example: (See Fig. 4)
1. Measure Dimension "A"
2. Determine Dimension "B"
Using chart, determine angle "x" by
finding the intersection point of a
dimension "A" vertical line and a
dimension "B" horixontal line.