Hammering the axcels in a CVT gear causes the variator pulleys mains to diapers a little bit or the final gear assy stars fiddle up by severe hammering.
And it results in jerk from p-r. And n-d
Another sad story of the scenario is after installation a proper warmup is not followed.
A CVT vehicle after axcel replacement should be warmed up properly and when the rpm settles down at idle gently shift from P - R and wait for the engagement when engage wait for few second and DONOT DRIVE The car at all
After it shift it to N and wait for few Seconds and then shift it to D and wait for engagement after engagement wait for few seconds.
After completing the procedure mentioned above.
Drive the vehicle very gently on lighter throttle never ever throttle it hardly it will cause the variators or belt to be slipped.
This is the procedure our mechincs don't have axcel pullers with them and the inners if opened for the first time are hard to pulled out so little or hard tapping is a common practice for our mechincs