Lincoln Corsair: Driveshaft / General Procedures - Driveshaft Angle Measurement
Check
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-joint for correct operation.
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Park the vehicle on a level surface such as a drive-on hoist or back onto a front end alignment rack.
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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.
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Calibrate the anglemaster by placing it on the bottom of the transfer case and press the ALT-ZERO button.
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Special Tool(s): Anglemaster II Driveline Inclinometer/Protractor 164-R2402.
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Measure the slope of the rear driveshaft front tube. The measured angle will be the front joint operating angle.
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Special Tool(s): Anglemaster II Driveline Inclinometer/Protractor 164-R2402.
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Calibrate the anglemaster by placing it on the clean,
flat surface of the rear driveshaft front tube and press the ALT-ZERO
button.
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Special Tool(s): Anglemaster II Driveline Inclinometer/Protractor 164-R2402.
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NOTE:
Rotate the driveshaft until the flange U-joint cup
is parallel with the floor. This will simplify taking measurements.
Measure the slope of the rear driveshaft rear tube. The measured angle will be the center joint operating angle.
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Special Tool(s): Anglemaster II Driveline Inclinometer/Protractor 164-R2402.
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Calibrate the anglemaster by placing it on the clean,
flat locator surface on the left side of the drive axle and press the
ALT-ZERO button.
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Special Tool(s): Anglemaster II Driveline Inclinometer/Protractor 164-R2402.
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Measure the slope of the rear driveshaft rear tube. The measured angle will be the rear joint operating angle.
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Special Tool(s): Anglemaster II Driveline Inclinometer/Protractor 164-R2402.
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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.
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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.
-
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:
-
be equal or within one degree of each other.
-
have a 3 degree maximum operating angle.
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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:
Materials
Name
Specification
Motorcraft® MERCON® ULV Automatic Transmission FluidXT-12-QULV
WSS-M2C949-A, MERCON® ULV
Removal
NOTICE:
Failure to match the replacement solenoid service band to
the original solenoid can cause damage to the transmission or erratic
engagements and shifts...
When the engine starts for the first time on
your drive, the idle speed increases, this
helps to warm up the engine. If the engine
idle speed does not slow down, have your
vehicle checked as soon as possible.
Before starting your vehicle, check the
following:
Make sure all occupants fasten their
seatbelt...