Download Service - Twin Disc

Disassembly
Twin Disc, Incorporated
Use extreme caution when removing the trailing pump drive shaft to
prevent damage to the drive slot in the end of the shaft. The trailing
pump drive shaft and gear are not serviced separately. The trailing
pump drive gear and shaft are serviced as an assembly (as a single
part number).
4
2
3
AR151-6557
AR153-6557
Figure 60. Trailing Pump Drive Shaft (4) Removal
Bearing
Reinstall special tool T21482-17. Pull the trailing pump shaft bearings
and spacer (5) out the back of the transmission housing. The spacer is
located between the two ball bearings.
5
R156-6557
AR157-6557
Figure 61. Trailing Pump Shaft Bearings and Spacer (5) Removal
90
Marine Transmission Service Manual #1021654