Shimming (High Thrust Model); Shimming Workflow - SELVA MARINE Kingfish 25 Service Manual

Drive shaft and lower case (high thrust model) / Shimming (high thrust model)

Shimming (high thrust model)

Shimming workflow

Remove the water pump
assembly.
Measure the backlash before
disassembly.
Within specification?
Disassemble the lower unit.
Select the pinion shims (T3).
Assemble the lower unit.
Measure the backlash.
Within specification?
Install the water pump assem-
bly.
TIP:
• Shimming is not required if the backlash is within specification.
• Shimming is required when assembling the original inner parts and a new lower case.
• Shimming is required when replacing the pinion, forward gear, reverse gear, bearings, shaft, or
propeller shaft housing.
YES
NO
NO
YES
Shimming is not required.
Adjust the forward gear shim
thickness (T1) and reverse gear
shim thickness (T2).
8
8-52