Technical data

13773-001
12-10
Page 530 Nov 2000
C. Hydraulic Brake System
The main wheels have hydraulically operated, single-cylinder dual piston type disc brakes, individually
activated by floor mounted toe pedals at both pilot stations. A parking brake mechanism holds induced
hydraulic pressure on the disc brake for parking. The system is replenished by filling the hydraulic res-
ervoir, located in the engine compartment on the upper right corner of the firewall. Replenish the sys-
tem with MIL-H-5606 hydraulic fluid only.
WARNING:
Never service the hydraulic reservoir while the parking brake is activated. Fluid in
the wheel cylinders may be under high pressure due to expansion. Therefore, be
sure parking brake is released and wheel chocks are in place, prior to beginning
hydraulic system servicing. If the brake pedal feels spongy, the complete brake
system must be bled. If the system is low, the reason for fluid loss, must be deter-
mined before continued operation of the airplane. Any spilled brake fluid must be
removed immediately as it will damage any painted surface upon contact.
Remove any dirt on the brake fluid reservoir filler cap before opening.
(1) Brake Fluid Replenishing
(a) Remove the upper engine cowling to gain access to the reservoir. (Refer to 71-10)
(b) Remove any dirt from the hydraulic brake fluid reservoir before opening the filler cap.
(c) Remove filler cap and add hydraulic brake fluid (Type MIL-H-5606) as needed.
(d) Install the filler cap.
(e) Inspect the complete system for any obvious problems.
(f) Install engine cowling. (Refer to 71-10)
D. Tires
The nose tire uses a 5.00 - 5 wheel with a 5.00 x 5, six-ply rated tire with tube. The main landing gear
uses 15 x 6.00 X 6 wheels with 15 x 6.00 - 6, six-ply rated tires with tubes. Always keep the tires
inflated to their rated pressure to assure maximum service and to reduce damage when landing on
stones with sharp edges. When adjusting tire pressure, inspect the tires for any signs of abnormal
wear, cuts, or bruises.
(1) Tire Air Pressure Replenishing
(a) Acquire necessary tools, equipment, and supplies.
CAUTION: The following procedure must be performed in calm, warm weather, with the
airplane sitting on a smooth and level surface. Always check air pressure
using an accurate gage.
Note: Always consider load factor and ambient temperature when checking air
pressure. Air pressure will increase when the tire is subjected to a load and
when the temperature increases.
Description P/N or Spec. Supplier Purpose
Compressed air supply - Any Source Adding air pressure to
tires
Accurate air pressure gage - Any Source Checking tire pressure
Wheel chocks - Any Source Securing airplane