Yamaha 55DEHD Service Manual page 129

LOWR
Lower unit ..................................................................................................... 6-1
Removing the lower unit .......................................................................... 6-4
Removing the water pump ...................................................................... 6-5
Checking the water pump ........................................................................ 6-6
Disassembling the oil seal housing ......................................................... 6-6
Assembling the oil seal housing .............................................................. 6-6
Propeller shaft housing ............................................................................... 6-7
Removing the propeller shaft housing assembly ..................................... 6-8
Disassembling the propeller shaft assembly ........................................... 6-8
Disassembling the propeller shaft housing .............................................. 6-9
Checking the propeller shaft housing .................................................... 6-10
Checking the reverse gear .................................................................... 6-10
Checking the propeller shaft .................................................................. 6-10
Assembling the propeller shaft housing ................................................ 6-10
Assembling the propeller shaft assembly .............................................. 6-12
Drive shaft and lower case ....................................................................... 6-13
Removing the drive shaft ....................................................................... 6-14
Removing the shift rod .......................................................................... 6-14
Disassembling the drive shaft ............................................................... 6-14
Disassembling the forward gear ............................................................ 6-15
Disassembling the lower case ............................................................... 6-15
Checking the pinion and forward gear ................................................... 6-16
Checking the drive shaft ........................................................................ 6-16
Checking the lower case ....................................................................... 6-16
Assembling the forward gear ................................................................. 6-16
Assembling the drive shaft .................................................................... 6-16
Assembling the lower case .................................................................... 6-17
Installing the shift rod ............................................................................ 6-18
Installing the drive shaft ......................................................................... 6-18
Installing the oil seal housing ................................................................ 6-19
Installing the propeller shaft housing ..................................................... 6-19
Installing the water pump ...................................................................... 6-20
Installing the lower unit .......................................................................... 6-22
Shimming .................................................................................................... 6-25
Shimming ............................................................................................... 6-26
Selecting the pinion shim ...................................................................... 6-26
Selecting the forward gear shim ............................................................ 6-27
Selecting the reverse gear shim ............................................................ 6-28
Backlash ..................................................................................................... 6-29
Measuring the forward and reverse gear backlash ............................... 6-29
6885J11
Lower unit
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