Checking The Pinion And Forward Gear; Checking The Drive Shaft; Checking The Lower Case; Assembling The Lower Case - Yamaha F150B Service Manual

LOWR
2. Remove the needle bearing a.
c
b
a
b
Ball bearing attachment b: 90890-06636
Driver rod LL c: 90890-06605
TIP:
Make sure to remove the forward gear before
removing the needle bearing.
3. Heat the installation area of the taper
roller bearing outer race in the lower case
with a gas torch, and then remove the
outer race d and shim(s) (T1) e.
NOTICE: When
case, heat the entire installation area
evenly. Otherwise, the paint on the
lower case could be burned.
TIP:
• Before removing the taper roller bearing
outer race d, place some cushioning mate-
rial below the lower case to catch the outer
race when it falls out.
• If the taper roller bearing outer race does
not come out, lightly tap the lower unit tor-
pedo with a plastic hammer.
8-17
Lower unit
c
a
heating the lower
e
d
Checking the pinion and forward
gear
1. Check the pinion and forward gear.
Replace if cracked or worn.

Checking the drive shaft

1. Check the drive shaft. Replace if dam-
aged or worn.
2. Measure the drive shaft runout. Replace
if above specification.
Drive shaft runout limit:
0.2 mm (0.008 in)

Checking the lower case

1. Check the lower case. Replace if cracked
or damaged.

Assembling the lower case

• Use heat-resistant gloves, otherwise
burns could result.
• Remove any flammable substances,
such as gasoline and oil, around the
working area to avoid the risk of fire.
• Heat the lower case in a well-ventilated
area.
Do not reuse the bearing, always replace
it with a new one.
1. Install the original shim(s) (T1) a.