I am brand new to this forum, and am hoping someone can help me work through this.
I found metal shavings in my DP-D1 outdrive so I tore it down and it appears that the lower unit pinion gear retaining nut is hitting the back of the bearing cage on the inner shaft gear and clipping the corners off of the nut. I decided to replace all bearings in the lower unit since the drive is 20 years old, and the vertical shaft bearings were worn.
While going through the shimming procedures, the shimming for the 2 drive gears worked out very close to the shims that were in there originally so I am confident they are OK. However following the procedure for the vertical shaft, the numbers work out to needing a -.19mm shim. The issue seems to be the H stamping is beyond the tolerances. If you go by their nominal numbers in the procedure you have 277mm for the housing measurement, and 217.5 (shaft) + 60 (gear) = 277.75 for the vertical shaft.
This would require .75mm of shims. The H stamping on my housing is 99, and the gear stamping is 049. This results in 277.799 for the shaft, and 277.99 for the housing. Rounding the shaft number and subtracting the H measurement from the shaft measurement according to the procedure results in 277.80 - 277.99 = -.19mm. There were 2 0.2mm and 2 0.05mm shims in the shaft housing when I disassembled it.
Any help in reconciling this would be appreciated.
I found metal shavings in my DP-D1 outdrive so I tore it down and it appears that the lower unit pinion gear retaining nut is hitting the back of the bearing cage on the inner shaft gear and clipping the corners off of the nut. I decided to replace all bearings in the lower unit since the drive is 20 years old, and the vertical shaft bearings were worn.
While going through the shimming procedures, the shimming for the 2 drive gears worked out very close to the shims that were in there originally so I am confident they are OK. However following the procedure for the vertical shaft, the numbers work out to needing a -.19mm shim. The issue seems to be the H stamping is beyond the tolerances. If you go by their nominal numbers in the procedure you have 277mm for the housing measurement, and 217.5 (shaft) + 60 (gear) = 277.75 for the vertical shaft.
This would require .75mm of shims. The H stamping on my housing is 99, and the gear stamping is 049. This results in 277.799 for the shaft, and 277.99 for the housing. Rounding the shaft number and subtracting the H measurement from the shaft measurement according to the procedure results in 277.80 - 277.99 = -.19mm. There were 2 0.2mm and 2 0.05mm shims in the shaft housing when I disassembled it.
Any help in reconciling this would be appreciated.