Measuring Brake Lining Wear; Removal Of Linings From Calipers; Replacement Of Metallic Linings - Thrush Aircraft S2R–T660 Maintenance Manual

J. Inflate tube until beads seat on wheel flanges. Remove valves core and allow tube to deflate.
K. Install valves core and inflate tires from 40 to 60 psi. Check to assure valve stem does not
leak before installing valve cap.
L. Lubricate washer and axle nut (see Section II Servicing). Install wheel assembly on axle and
secure with washer and axle nut.
M. While manually rotating wheel, torque axle nut to 80 inch-pounds, continue rotating wheel and
back off to zero inch-pounds. While manually rotating wheel, torque to 40-inch pounds. If nut
is not to locking position, advance to next position, not to exceed 30 degrees, and install cotter
pin.
N. Install hubcap and hubcap retaining ring.
O. I Install brakes back plate assembly and torque bolts to 60 inch-pounds. These bolts are self-
locking and should be inspected for the self-locking feature. Replace bolts if the self-locking
feature is damaged or destroyed.
P. Wheels may be repainted if the parts have been repaired and thoroughly cleaned. Paint
exposed areas with one coat of zinc primer and one coat of aluminum lacquer.

MEASURING BRAKE LINING WEAR

(See latest edition of Cleveland Manual number AWBCMM0001-5 for pertinent details.)
The minimum wear thickness for replacement of metallic linings is 0.100 inch (refer to Fig. 6-2).

REMOVAL OF LININGS FROM CALIPERS

A. Remove backing plate attaching bolts and washers, and remove back plates and insulator shim.
B. Carefully slide brake caliper out of torque plate bushing.
C. Slide pressure plate assembly (lining carrier) off anchor bolts.

REPLACEMENT OF METALLIC LININGS

A. Pry off old lining using a screwdriver.
B. Clean pressure plate and back plate surfaces of dirt, grease, etc. before installing new linings.
6 -10
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
Do not paint working surfaces of the bearing cups.
SERVICING
* NOTE *
Effective: 12/17/03