63A Down-Angle And 63Iv V-Drive Transmissions; Transmission Fluid - Mercury MerCruiser Service Manual

ZF/45C, 45IV, 63A, 65IV Transmissions
IMPORTANT: The fluid level is checked with the dipstick inserted—not screwed into the housing.
1. Remove the dipstick.
2. Fill the transmission with fluid through the dipstick hole to bring the level up to the full mark.
Tube Ref No.
Dexron III Automatic
28
3. Replace the dipstick.
IMPORTANT: Do not start or crank the engine without fluid in the transmission.
IMPORTANT: To accurately check the fluid level, operate the engine at 1500 RPM for two minutes immediately prior to
checking the fluid level.
4. Start the engine and operate it at 1500 RPM for two minutes to fill all hydraulic circuits.
5. Stop the engine and quickly check the fluid level. Add transmission fluid, if necessary, to bring the level up to the full mark
on the dipstick.
63A Down‑Angle and 63IV V‑Drive Transmissions

Transmission Fluid

Checking
1. Remove the dipstick.
IMPORTANT: When checking the fluid level, rest the dipstick on top of the threaded housing hole. Do not screw the
dipstick into the threaded housing hole.
2. Check the fluid level as indicated on the dipstick with the dipstick resting on top of the threaded hole.
NOTE: The fluid level may be somewhat over the maximum mark, as some of the fluid from the transmission fluid cooler
and hoses may have drained back into the transmission.
3. If the fluid level is low, add transmission fluid to bring the level up to the maximum mark on the dipstick.
Page 9A-10
Description
a
26713
a -
b -
c -
d -
16604
© 2016 Mercury Marine
Where Used
ZF/Hurth 45C and 63 transmissions
a - Dipstick
Dipstick
Threaded hole
Maximum fluid level
Minimum fluid level
90-8M0099748 eng DECEMBER 2015
Part No.
Obtain Locally