35 FRONT AXLE - 4 X 4 CONSTANT VELOCITY SHAFTS Introduction : Fixed Rzeppa Joint Fig. 63 Rzeppa joints are built with outer race, inner Race, cage & Six Balls. Outer Race & Inner Race have arched (spherical) ball groovers. First cage is assembled with inner Race & six balls and then outer race is assembled.The torque is transferred from Inner Race to outer race through six balls. Plunging Double offset (DOJ) Joint Fig. 64 DOJ is similar to Rzeppa joint, Except for outer Race which has straight & longer ball grooves, instead of arched, as in case of Rzeppa joint. Inner Race & Cage can slide in & out on six balls to compensate change in length of CV shafts. Constant velocity joints used on both Right hand side and left hand side are same, but for the difference in male & female splines at DOJ end. Right hand half shaft has male splines on DOJ side and it fits in side gear in differential case. Fig. 65 Left hand Half shaft has female splines and it fits on axle shaft. Fig. 66 The fix Rzeppa joints are used on the wheel end. The double offset joints are used with centre section. Fig. 64 Fig. 65 Fig. 66 Fig. 63 Left hand side Right hand side Plunging Double Offset Joint Fixed Rzeppa Joint
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