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2-5 Shift Lever Positioning
The selector control mechanism and linkage must position the shift lever on the
transmission exactly in Forward (F), Neutral (N), and Reverse (R) shifting positions. A
detent ball located behind the transmission shift lever must work freely to center the
lever in each position. (see Figure 2-2). The selector control positions at the helm(s)
must be coordinated with those of the Velvet Drive shift lever through shift mechanism
adjustments. An improperly adjusted shift mechanism can cause damage to the transmission.
NOTE: When moving from Neutral Position to:
Forward: lever always moves towards engine.
Reverse: lever always moves away from engine.
CAUTION: Clutch failure will occur if transmission
shift lever does not fully engage detent
ball positions.
The shifting mechanism and transmission shift lever should be free of dirt to ensure
proper operation.
CAUTION: Do not remove detent ball.
2-6. Transmission Connections
a. Visually check for oil leaks at hydraulic connections, worn hydraulic
lines.
b. Check for broken or loose fasteners.
c. Replace all worn hydraulic lines, tighten all connections where an oil leak
has occurred, and secure all hydraulic lines.
d. Visually check all electrical connections for loose terminals and worn
wires.
e. Repair or replace all worn or broken wires to Coast Guard specifications and tighten
all loose connections.
2-7. Transmission Bolts
a. Check all exterior transmission bolts for tightness.
b. Tighten all loose bolts to recommended torque specifications.
c. Tighten all coupling bolts.
2-11. Change Transmission Oil
A seasonal transmission oil change is recommended for all pleasure boats. Work boats
require transmission oil changes every 1,000 hours. Oil must be changed anytime it becomes
contaminated, changes color, or becomes rancid smelling.
WARNING: Do not use gasoline or any other volatile
or highly combustible liquid as a solvent.
2-9. Removing Transmission Oil (Oil Filler Cap)
a. Place an appropriate size container near oil cooler return line.
b. Remove oil filler cap and dipstick assembly (see Figure 2-:1).
c. Remove oil cooler return line.
d. Allow oil from return line to drain into container.
e. Connect oil cooler return line and torque to 25-,15 ft.-lbs. (34-47 N·m).
F. Use a suction pump in the oil filler cap hole to remove remaining oil in the
transmission
g. Remove suction pump from transmission.
2-10. Fill Transmission With Oil
The quantity of oil depends upon the model Velvet Drive"' (see Table 1-1 for
capacity) angle of installation and oil cooling system capacity.
NOTE: Oil capacities in Table 1-1 are for
transmission only. Additional oil will be required for oil cooling system.
WARNING: DO NOT REMOVE DIPSTICK WITH THE
ENGINE RUNNING. HOT OIL CAN CAUSE BURNS.
CAUTION: Clean around the area of the dipstick,
before removing. Small particles of dirt can cause damage to internal
components and cause values to stick.
Check Oil Level.
The transmission should be at operating temperature (190o max.) to get an
accurate oil level reading. Oil will expand when it is heated. Oil will drain back from
the cooler. Expansion and drain-back can significantly affect oil level.
Warm Oil Level Check.
When the transmission is at operating temperature, place selector lever in neutral. Shut
off engine. Carefully remove transmission dipstick. Immediately insert clean dipstick and
read oil level.
NOTE: Oil level must be checked immediately
after engine shut-down to prevent an incorrect reading. Oil drains back into transmission
from the cooler and cooler lines.
Add or remove oil if necessary. Repeat the above checking procedure as required until oils
at the dipstick mark.
Cold Oil Level Check.
For ease of checking the oil prior to engine startup, a cold oil level mark can be made.
To find the cold oil level mark, the oil level must first be set according to the warm oil
level checking procedure. Then, let the boat sit overnight. Insert clean dipstick and read
oil level.
Put a mark on the dipstick at the cold oil level reading. You can use the new mark to
check the oil level when cold. If oil level adjustment is needed, add oil to the new mark.
CAUTION: System related noises or vibrations can
occur at low engine speeds which can cause gear rattle resulting in damage to the boat
engine and/or transmission. Borg-Warner Automotive Inc. is not responsible for total
system related torsional vibration of this type.
2-11 Service manuals can be obtained by contacting the nearest Velvet Drive
distributor.
TYPE OF OIL
Dexron II, Type F, or any hydraulic fluid which meets the C-3 oil specification is
recommended. Do not mix different brands or types of oil. If engine doesn't exceed 3000
RPM, a premium grade 30 weight engine oil is acceptable. 40 weight and multi-viscosity
oils are not recommended.
If the transmission oil temperature has exceeded 190" F, the oil must be changed in
the transmission and oil cooler system. If the transmission alarm sounds, the oil must be
changed also.
Any changes or modifications to the transmission cooling system will require that the oil
level be readjusted.
Any additions to the boat which will change the installation angle of the transmission at
rest (such as extra fresh water tanks, fuel supply, etc.) will require an oil level
adjustment.
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