2005+ Mercury Verado 4 Stroke 200/225/250/275 6 gear housing Service Manual, Page 68Get this manual
Right Hand Rotation 4Rotate the driveshaft 120 degrees in clockwise direction and take another reading 5Repeat this process until three readings have been taken6Add the three readings together and divide the sum by three to get the average pinion gear heightMake note of this average measurement Pinion Gear
7If the average pinion gear height is not correct, add or subract shims beneath the lower driveshaft tapered bearing race8Reinstall removed components and retorque retainer to specificationsDescription Retainer Nm 135.5 Ib.inIb.ft 100
9Rotate the driveshaft at least full turns in clockwise directionRecheck the pinion gear heightIf pinion height is not within specification, adjust shim thickness and recheckRepeat this process until the average pinion height is within specification
Forward Gear Backlash
Forward Gear Backlash
0.457 mm to 0.685 mm (0 .018 in- 0.027 in
NOTE: If backlash has already been checked and it was determined that it needs to be adjusted, (see Checking Forward Gear Backlash), adding or subtracting 0.03 mm (0.001 in shims will change the gear backlash by the same amountExample (if backlash is too high) If forward backlash checks: (Subtract): Add this quantity of shims: Provides backlash of: Example (if backlash is too low) Backlash checksSubtract this quantity of shims: Provides backlash of: 0.25 mm (0.010 in 0.31 mm (0 .012 in 0.56 mm (0 .022 in 1.02 mm (0.040 in 0.56 mm (0.022 in 0.46 mm (0.018 in 0.56 mm (0 .022 in