GEAR BOX 60 21.Loosen and remove outer nuts (12Nos.) on connection adaptor housing to the rear half and take out the adaptor along with selector heads. 22. After the shim selection at rear end front shim selection has to be done (for counter and main shaft) as per the procedure given below: FRONT COVER SHIM SELECTION PROCEDURES A. DRIVE SHAFT (SHIM SELECTION) Calculate the shim values as illustrated below: Measure the front cover depth along with the gasket at the drive shaft end. Consider this as “P”. Let this depth be 5.75 mm. Measure the drive shaft bearing projection over housing face. Consider this as “Q”. Let this projection be 5.50 mm. Calculate the difference between “P” & “Q”. Let it be “R”. R = P – Q R = 5.75 – 5.50 mm R = 0.25 mm Thickness of shim required to maintain the end play of 0.07 to 0.1mm = R – (0.1 Specified end play) = 0.25 – 0.1 mm = 0.15 mm B. COUNTER SHAFT (SHIM SELECTION) Calculate the shim values as illustrated below: Measure the front cover depth along with the gasket at the counter shaft end. Consider this as “T”. Let this depth be 4.75 mm.
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