Wheel Brake Assembly - Piper Lance II Service Manual

9
LANCE II SERVICE MANUAL
A629
1. TORQUE PLATE ASSY.
2. ANCHOR BOLT
3. BRAKE LINING
4. RIVET
5. BACK PLATE ASSY.
6. BOLT
7. "O" RING
S. PISTON ASSY.
9. PRESSURE PLATE ASSY.
10. INSULATOR
11. SNAP
L
3
4
5
7
30-83
3065
Figure 7-17. Wheel Brake Assembly
7-58. CLEANING, INSPECTION AND REPAIR OF WHEEL BRAKE ASSEMBLY.
a. Clean the assembly with a suitable solvent and dry thoroughly.
b. Check the wall of the cylinder housing and piston for scratches, burrs, corrosion, etc.,
that may damage "O" rings.
c. Check the general condition of the brake bleeder screw and lines.
d. Check the brake disc for wear, grooves, scratches, or pits. Minimum service thickness
of Disc 164-22A used on Wheel Assembly 40-90A is .345. A heavy duty brake and wheel
assembly is also optional. The minimum disc thickness of Disc 164-46 used on heavy duty
Wheel Assembly 40-120 is .405. A single groove or isolated grooves up to .030 of an inch deep
would not necessitate replacement, but a grooving of the entire surface would reduce lining life
and should be replaced. Should it be necessary to remove the wheel disc, refer to Paragraph
750.
e. It is recommended that both bearing surfaces of disc 164-46 used on heavy duty wheel
assembly be inspected periodically for the following items which would make replacement of
the disc necessary.
1. Any crack exceeding .80 inch in length or .21 inch in depth.
2. Any crack extending into the welded seam between the flange and cup.
3. If crack depth is not measurable, replace disc if crack length exceeds .400.
Revised: 10/3/80
LANDING GEAR AND BRAKE SYSTEM
1L5