Ford Ecosport: Driveshaft / General Procedures - Driveshaft Angle Measurement
Check
NOTE:
This procedure does not apply to CV joints, flex couplers or
double cardan joints that are used in some driveshafts. This check is
for single-cross and roller-style joints found in the driveshafts.
NOTE:
Prior to checking driveline angularity, inspect the U-joints for correct operation.
NOTE:
An incorrect driveline angle can cause a vibration or shudder.
NOTE:
Driveline angularity is the angular relationship between the
engine crankshaft, the driveshaft and the rear axle pinion. Factors
determining driveline angularity include ride height, rear spring and
engine mounts.
-
NOTE:
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Special Tool(s): Anglemaster II Driveline
Inclinometer/Protractor 164-R2402. Carry out the following preliminary
setup steps:
-
Inspect the U-joints for correct operation.
-
Park the vehicle on a level surface such as a drive-on hoist, or back onto a front end alignment rack.
-
Verify the curb position ride height is within
specifications with the vehicle unloaded and all of the tires are
inflated to their normal operating pressures.
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Calibrate the Anglemaster II Driveline
Inclinometer/Protractor by placing it on a clean, flat level section of
the frame rail and press the ALT-ZERO button.
Vehicles with flat-flanged, split-pin or slip-flanged U-joints
-
NOTE:
If equipped, remove the snap ring to allow
access to the base of the U-joint cup. Make sure the Anglemaster II
Driveline Inclinometer/Protractor is seated against the U-joint cup.
NOTE:
Rotate the driveshaft until the flange U-joint
cup is parallel with the floor. This will simplify taking measurements.
Special Tool(s): Anglemaster II Driveline
Inclinometer/Protractor 164-R2402. Check and record the flange angle as
angle A.
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Special Tool(s): Anglemaster II Driveline
Inclinometer/Protractor 164-R2402. Measure the slope of the connecting
component. Record the measurement of the component angle as angle B.
Multiple piece driveshafts
-
NOTE:
Repeat this step for each center support bearing on the driveshaft.
NOTE:
It is not necessary to remove the U-joint snap ring, if equipped, for these measurements.
Special Tool(s): Anglemaster II Driveline
Inclinometer/Protractor 164-R2402. Measure the slope of the components
in front and behind the center support bearing U-joint in the area
indicated. Record the front component as angle A and the rear component
as angle B.
All vehicles
-
NOTE:
When 2 connected components slope in the same
direction, subtract the smallest number from the larger number to find
the U-joint operating angle. When 2 connected components slope in the
opposite direction, add the measurements to find the U-joint operating
angle.
Calculate the difference in the slope of the components to determine the U-joint operating angle.
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NOTE:
-
The U-joint operating angle is the angle
formed by 2 yokes connected by a cross and bearing kit. Ideally, the
operating angles on each connection of the driveshaft must:
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be equal or within one degree of each other.
-
have a 3 degree maximum operating angle.
-
have at least one-half of one degree continuous operating angle.
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If the angle is not within specifications, repair or
adjust to obtain the correct angle. Inspect the engine mounts,
transmission mounts, center support bearing mounting, rear suspension,
rear axle, rear axle mounting or the frame for wear or damage.
Symptom Chart(s)
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation)...
Special Tool(s) /
General Equipment
100-002
(TOOL-4201-C)
Holding Fixture with Dial Indicator Gauge
Inspection
NOTE:
Driveline vibration exhibits a higher frequency and lower
amplitude then high-speed shake...
Other information:
Removal
NOTICE:
Suspension fasteners are critical parts that affect the
performance of vital components and systems. Failure of these fasteners
may result in major service expense. Use the same or equivalent parts if
replacement is necessary...
Sound Deadeners and Insulators
NOTICE:
Mastic is made of a combustible material and should be
removed prior to carrying out welding procedures to the area. Heat zones
from welding near mastic may cause the mastic material to burn.
NOTICE:
Corrosion protection must be restored to the area after the
mastic material is applied...