8-67LOWR Lower unitMeasuring the reverse gear backlashAdjusting the forward gear shim thickness (T2)Measure the thickness of each forward gear shim (T2) in 2 places.Adjusting the reverse gear shim thickness (T1)Measure the thickness of each reverse gear shim (T1) in 2 places.(mm)MeasurementsBefore disassembly After disassemblyMeasurement point aMeasurement point bMeasurement point cMeasurement point dAverageTruncated average(BL1)(mm)Number of shim(s) Subtotal0.100.120.150.180.300.400.50Total(mm)Number of shim(s) Subtotal0.100.120.150.180.300.400.50Total