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 TM 55-1905-217-12
26. Governor speed control
28. Throttle shaft lever
rod
29. Engine stop control cable
27. Speed control lever
Figure 2-8.2. Propulsion unit controls diagram, hull numbers
8540 thru 8560 and 8580 thru 8618. (Sheet 2 of 2)
e. Engine Room Instruments and Gages.
(1) Sight glasses, ramp hoist hydraulic system tank
and steering tank. These tanks are equipped with sight
glasses on all craft. Oil temperatures are also indicated on
the gages on hull numbers 8520 thru 8560 and 8580 thru
8618.
(2) Sight glass, fresh water cooling system
expansion tanks (fig. 2-28). There are two expansion tanks,
B.
HULL NO.85200 THRU 8539
one on each side of the engine room. The coolant level
should be visible in the sight glass at all times.
Figure 2-9. Engine electric start button in engine room.
(3) Ramp hoist hydraulic filter gage (fig. 1-13 or fig.
2-29). The gage is located adjacent to the return line filter on
to the closed position. A system of limit switches, a cable
the engine room aft bulkhead. The gage indicates element
shield, and a directional control valve have been added
condition.
to remedy this operational problem. Briefly, the system
(4) Steering system filter gage (fig. 2-30). The gage
works in the following way:
is located adjacent to the reburn line filter on engine room aft
(1) The limit switch, located in the pilot house
bulkhead. The gage indicates filter condition. (Hull numbers
aft of the ramp control lever energizes the
8540 thru 8560 and 8580 thru 8618).
system when the ramp control lever is
f. Ramp-Slack Cable System (Hull numbers 8500 thru
pulled.
8519). When the ramp is lowered and comes to rest on some
(2) The limit switch at the ramp is activated as
surface; the cable will continue to pay out from the winch
soon -as slack exists in the cable.
unless it is immediately shut off. This causes the cable to
(3) The solenoid valve shuts off the hydraulic
bind and kink when attempting to raise the ramp
fluid to the cable winch and returns it to the
reservoir thereby not allowing any more
cable to pay out.
2-13
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