Checking The Pinion And Forward Gear; Checking The Drive Shaft; Checking The Lower Case; Assembling The Forward Gear - Yamaha 55DEHD Service Manual

Checking the pinion and forward
gear
1. Check the teeth of pinion. Check the
teeth and dogs of forward gear. Replace
the pinion and forward gear if cracked or
worn.

Checking the drive shaft

1. Check the drive shaft spline. Replace the
drive shaft if bent or worn.
2. Measure the drive shaft runout.
Runout limit: 1.0 mm (0.039 in)

Checking the lower case

1. Check the skeg, cavitation plate and tor-
pedo. Replace the lower case if cracked
or damaged.

Assembling the forward gear

1. Install a new taper roller bearing into the
forward gear using a press.
1
6885J11
cC
Do not reuse the bearing, always replace it
with a new one.

Assembling the drive shaft

1. Install a new taper roller bearing onto the
drive shaft using a press.
2
68860115
cC
Do not reuse the bearing, always replace it
with a new one.
2
68860270
Drive shaft and lower case
Needle bearing attachment:
90890-06608 1
90890-06607 2
1
Bearing inner race attachment 1:
90890-06643
Support 2:
90890-02394
1
2
3
4
1
5
68860280
6
7
8
9
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