THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 4
Jun 1/03
3F22
32-40-00
D. Bearing Cup Replacement
(1) Removal
(a) Insert wheel half into boiling water for 15 minutes or place in an oven not exceeding
250°F (121°C) for 15 minutes.
(b) Remove from source of heat and invert wheel half. If cup does not drop out, tap cup
evenly from axle bore with a fiber drift pin or suitable arbor press.
(2) Installation
(a) To replace a new cup, apply one coat of zinc chromate primer to wheel half bearing bore.
(b) Insert wheel half into boiling water for 15 minutes or place in an oven not exceeding
250°F (121°C) for 15 minutes. Chill new bearing cup in dry ice for a minimum of 15
minutes.
(c) Remove wheel half from source of heat and bearing cup from dry ice. Install chilled
bearing cup into bearing bore of heated wheel half. Tap gently to seat evenly in
place,using a fiber drift pin or suitable arbor press.
2. Br
akes (See Figure 5.)
A. Brake Adjustment and Lining Tolerance
Because they are self-adjusting, no adjustment of brake lining clearance is necessary. Inspection of
lining is necessary, and may be inspected visually while installed on airplane.
B. Wheel Brake Assembly (See Figure 3.)
(1) Removal and Disassembly
(a) Disconnect brake line from brake cylinder at tube fitting.
(b) Remove cap bolts that join brake cylinder housing and lining back plate assembly.
Remove back plate from between brake disk and wheel.
(c) Slide brake cylinder housing from torque plate.
(d) Remove pressure plate by sliding off anchor bolts of housing.
(e) Piston(s) may be removed by injecting low air pressure in cylinder fluid inlet and forcing
piston from housing.
(f) Check anchor bolt for wear.
(g) Remove anchor bolt by the following procedure:
1
Position cylinder assembly on a holding fixture. (Refer to Figure 4.)
2 Use a suitable arbor press to remove anchor bolt from cylinder body.
(h) Install anchor bolt by the following procedure:
1 Support anchor bolt in a holding fixture. (Refer to Figure 4, step A.)
2 Align cylinder body over anchor bolt. (Refer to Figure 4, step B.)
3
Use a suitable arbor press and apply pressure on spot face directly over anchor bolt
hole. (Refer to Figure 4, step C.)
(2) Cleaning, Inspection and Repair
(a) Clean assembly with a suitable solvent and dry thoroughly.
(b) Check wall of cylinder housing and piston for scratches, burrs, corrosion, etc., that may
damage O-rings.
(c) Check general condition of brake bleeder screw and lines.
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