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PROPELLER SHAFT ANGLE MEASUREMENT To accurately check driveline alignment, raise and support the vehicle at the axles as level as possible. The same basic procedure applies to both the front propeller shafts and the rear propeller shaft. To (1) Rotate the shaft until transmission/transfer case output yoke bearing cap is facing downward, if Always make measurements from front to rear. (2) Place Inclinometer on yoke bearing cap, or the pinion flange ring, (A) parallel to the shaft (Fig. 9). This measurement will give you the transmis- sion or Output Yoke Angle (A). (3) Rotate propeller shaft 90 degrees and place Inclinometer on yoke bearing cap, or propeller shaft This measurement will give you the propeller shaft angle (C). (4) Subtract smaller figure from larger (C minus A) to obtain transmission output operating angle. (5) Rotate propeller shaft 90 degrees and place Inclinometer on pinion yoke bearing cap parallel to This measurement will give you the pinion shaft or input yoke angle (B). (6) Subtract smaller figure from larger (C minus B) to obtain axle Input Operating Angle. Refer to rules given below and the example in (Fig. 12) for additional information. • Good cancellation of U–joint operating angles (within 1°). • Operating angles less than 3°. • At least 1/2 of one degree continuous operating (propeller shaft) angle. REMOVAL AND INSTALLATION FRONT PROPELLER SHAFT NOTE: Different length propeller shafts are used for REMOVAL (1) Raise and support vehicle on safety stands. Fig. 9 Front (Output) Angle Measurement (A) 1 – SLIP YOKE BEARING CAP Fig. 10 Propeller Shaft Angle Measurement (C) 1 – SHAFT YOKE BEARING CAP 3 - 6 PROPELLER SHAFTS WJ SERVICE PROCEDURES (Continued) |