Blocking Plate Installation - Bell OH-58A Technical Manual

6-6. DOUBLE-CHECK VALVE INOPERATIVE.
GENERAL INFORMATION: The double-check
valve, along with both accumulators, is
situated in-line between the power tur-
bine governor and the fuel control, and
acts as a dampener for surge control.
This system feeds into the fuel control
to insure a steady stream of secondary
fuel should the compressor flow become
inconsistent. It also decelerates a
quick reaction from pilot input. With
these factors in mind, the pilot must be
made aware that if any component of the
system is removed or bypassed, any input
will result in erratic engine response.
At all times, the integrity of all fuel
control lines must be maintained. No
lines may be deleted or plugged.
Figure 6-2.

Blocking Plate Installation

NOTE
Should any of the three components
sustain damage or otherwise be
rendered inoperable, the remaining
functional items should be recon-
nected. In emergency situations,
when time is of the essence, the
complete system may be bypassed
(option 2). This option results
in the most unstable condition for
the pilot and is therefore least
desirable.
Remove Defective Component.
OPTION 1:
LIMITATIONS: Erratic engine response.
PERSONNEL/TIME REQUIRED:
. 1 Soldier
. 30 Minutes
TM 55-1520-228-BD
POWER PLANT
6-5