King Air C90GTi, Pilot Training Manual

Page: 307 / 557

The parking brake can be released from ei-
ther the pilot’s or copilot’s side when the
brake pedals are depressed briefly to equal-
ize the pressure on both sides of the valves,
and the PARKING BRAKE handle is pushed
in to allow the parking brake valves to open.
To avoid damage to the parking brake sys-
t e m , t i r e s , a n d l a n d i n g g e a r, t h e p a r k i n g
brake should be left off and wheel chocks
or tiedowns installed if the air plane is to
b e l e f t u n a t t e n d e d, b e c a u s e t h e a i r p l a n e
may be moved by g round personnel in the
pilot’s absence. Also, ambient temperature
changes can expand or contract the brake
fluid, causing excessive brake pressure or
brake release.
BRAKE SERVICE
Brake fluid is supplied to the master cylin-
ders from a reser voir located on the upper
cor ner of the left side of the nose avionics
compar tment (Figure 14-23).
Brake system ser vicing is limited primar-
ily to maintaining the hydraulic fluid level
in the reser voir. A dipstick is provided for
measuring the fluid level. When the reser-
voir is low on fluid, add a suff icient quan-
tity of MIL-H-5606 hydraulic fluid to f ill
the reser voir to the full mark on the dip-
stick. Check all hydraulic landing gear con-
nections for signs of seepage and cor rect if
necessar y. Do not check while the parking
brake is deployed.
Standard brakes used on this air plane are
equipped with automatic brake adjusters. The
automatic brake adjusters reduce brake drag,
thereby allowing unhampered roll. Airplanes
with the automatic adjusters tend to exhibit
a softer pedal and a somewhat longer pedal
stroke.
KING AIR C90GTi/C90GTx PILOT TRAINING MANUAL
14-22
FOR TRAINING PURPOSES ONLY
14
LANDING
GEAR
AND
BRAKES
Figure 14-23. Brake Fluid Reservoir