Pilatus PC-12/47E MSN-1001-UP, Maintenance Manual, Page: 440 / 715

Note
To identify the consumables used in this procedure refer to the Consumable Materials List, AMM
12-B-20-31-00-
00A-070A-A
.
Note
To identify the AGE and tools used in this procedure refer to the List of AGE and Tools, TEM 12-B-00-00-00-00A-
060A-A .
Procedure
1 General
This procedure is applicable to the left and right main wheels. There are two different main wheels
and brake assemblies available; manufactured by either Goodrich or Parker. The wheels by one
manufacturer are not interchangeable with the brake assembly from the other. It is important to make
sure the correct type of wheel is installed when the main wheel is replaced.
When a tire is found deflated, remove the wheel and examine the three thermal relief plugs in the
wheel inner hub. If the plugs have melted because of too much heat from the brake unit, the wheel
and brake unit must be examined in accordance with their component maintenance manual.
2 Removal
2.1 Obey the safety precautions given in AMM 12-B-32-00-00-00A-901A-A or 12-B-32-00-00-00A-901B-A.
2.2 Lift the aircraft clear of the ground on jacks, refer to AMM 12-B-07-10-00-00A-901A-A.
2.3 Set the parking brake to ON.
2.4 Open and install a Safety clip (circuit breaker hold open) (Pt.No. T12-030) on this circuit breaker:
− Hydraulic Landing Gear - HYD CTL (ESSENTIAL BUS)
− Electro Mechanical Landing Gear - LDG GEAR PWR (RH POWER JUNCTION BOX).
2.5 Deflate the tire.
2.6 Remove the nut Figure 1 [22], washer Figure 1 [21] and bolt Figure 1 [17] then disconnect the rod
eye-end Figure 1 [19] from the landing gear door Figure 1 [1].
2.7 Make sure that the bush Figure 1 [18] and Figure 1 [20] remain installed on the landing gear door
Figure 1 [1] bracket.
2.8 Remove the wheel cover Figure 1 [3] as follows:
2.8.1 For Goodrich wheels - remove the six screws Figure 1 [4], washers Figure 1 [5] and the wheel cover
Figure 1 [3] from the wheel Figure 1 [2].
Note
The grommets Figure 1 [6] are not installed on Goodrich wheel covers.
2.8.2 For Parker wheels - remove the five screws Figure 1 [4], washers Figure 1 [5], grommets Figure 1 [6]
if necessary and the wheel cover Figure 1 [3] from the wheel Figure 1 [2].
2.9 Remove the cotter pin Figure 1 [12], nut Figure 1 [11], washers Figure 1 [9], bolt Figure 1 [8] and nut
Figure 1 [10] from the axle Figure 1 [16]. Discard the cotter pin.
2.10 Remove the wheel Figure 1 [2], snap rings Figure 1 [13], dust seals Figure 1 [14] and bearings
Figure 1 [15] from the axle Figure 1 [16].
2.11 Clean the bearings Figure 1 [15] and bearing cup Figure 1 [7] with the White spirit (Pt.No. P01-008)
and dry with the low pressure air.
PC-12/47E AMM Doc No 02300, ISSUE 01 REVISION 26 MSN 545, 1001-1719,
1721-1999
12-B-AM-00-00-00-I
UNCLASSIFIED
Effectivity: All 12-B-32-40-01-00A-920A-A
UNCLASSIFIED 2021-12-04 Page 3