*TM 1-1500-204-23-5
3-4.18
Change 3
(1)
Oil System Components. The oil system
serving the aft rotary--wing drive transmission is a com-
plete, separate system (Figure 3-3.P). It is a wet--sump
system which includes the temperature transmitter
(bulb), magnetic chip detector, screens, drain valve, oil
level sight gage, oil pressure pump, oil pressure transmit-
ter (transducer), relief valve, pressure Filter, and oil cool-
er.
NOTE
The sump is the lower circular casting of the
transmission. The fan drive shaft drives an oil
scavenger pump in the fan drive housing. The
pump returns scavenge oil which collects in
the forward part of the transmission when the
aircraft is in a nosedown attitude.
