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MIL-C-18087A(SH)
3.8.3 Lubrication.  Unless otherwise specified (see 6.2), oil for lubrica-
tion and cooling shall be supplied from the parent equipment bearing lubrication
system.
3.8.4  Flanges. hubs. and sleeves.  Unless otherwise specified (see 6.2),
flanges, hubs, and sleeves shall be as specified in 3.4.7 through 3.4.7.13.
Type V positive drive forced synchronizing clutch.
3.9
3.9.1 General.  Positive drive forced synchronizing clutches shall consist
of hydraulically or pneumatically actuated friction elements and gear tooth
elements.  The friction elements shall be constructed to synchronize the speeds of
the driving and driven shafts and allow for the engagement of gear tooth elements.
Gear tooth elements shall be engaged with no slippage, and shall transmit full
power torque.
Upon command, under any specified operating conditions
3.9.2
(see 6.2), the forced synchronizing positive drive clutch shall perform the
following functions:
(a) Automatically synchronize the speeds of the driving and driven
shafts .
(b) Prevent premature contact of the engaging coupling teeth until
synchronous speed is reached.
(c) Maintain synchronous speed during transition from friction to
positive drive.
(d) Connect the driving and driven shafts for the transmission of full
power by means of a gear-type coupling between the clutch sleeve
and hub.
If the clutch is hydraulically engaged or disengaged, provision shall be made to
prevent pressure overload of the actuating system.  The maximum pressure of the
actuating system shall be limited to prevent the clutch from engaging with a force
or speed which would result in impact damage to the clutch or other parts of the
propulsion unit.
3.9.3 Clutch sleeve position.  The clutch sleeve shall be provided with a
mechanism to specifically position the connecting sleeve in either the engaged or
disengaged position so that the position will not change when actuation pressure
is removed.
3.9.4  Flanges, hubs and sleeve.  Unless otherwise specified (see 6.2),
flanges, hubs and sleeves shall be as specified in 3.4.7 through 3.4.7.13.
3.9.5 Sleeve position indicator.  A visual indicator shall be provided to
show the position of the clutch sleeve.
3.9.6 Disengagement.  Upon command, the coupling between the driving and
driven shafts shall be disengaged so that the shafts may rotate independently
of each other.
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