Main WheelBF GoodrichCMM 32-45-73

3-1508

Name: 3-1508 — British Aerospace Main Wheel
Brand: BF Goodrich
SKU: 3-1508
Availability: InStock

British Aerospace

HS-125

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Overview

The 3-1508 is a main wheel assembly used on British Aerospace HS-125. Manufactured by Goodrich.

Material

Aluminum

Manufacturer

BF Goodrich

CMM Reference

32-45-73

Aircraft

British Aerospace

Maintenance Schedule

Eddy Current / NDTEvery tire change

OverhaulThe inspection intervals are calculated with the typical 250 cycles (landings) between tire changes. NOTE: To calculate the inspection interval for a different tire life, reference the example below:

Wear Pointsbearings, o-ring grooves, corrosion

Penetrant Inspection → Overhaul

Per CMM: Per CMM, any wheel requiring penetrant inspection is processed as an overhaul. Owners may elect overhaul at any tire change to extend service life.

Parts Replaced at Tire Change

Every tire change replaces the tire, the main wheel-half preformed packing (O-ring), the valve cap, and the valve core. Specific part numbers and dash sizes vary by wheel and are pulled from the CMM at the time of service.

Always Replaced

Seals & O-Rings

68-559O-ringQty 1

Hardware

TRVC5Cap, ValveQty 1

TRC4Core, ValveQty 1

Replaced If Needed

Seals & O-Rings

TRRG30O-ringQty 1

During tire change or NDT inspection, additional parts beyond the routine four may require replacement if they fail inspection or meet the rejection criteria defined in the CMM.

Parts Replaced at Overhaul

A full overhaul includes all parts replaced at tire change (listed above), plus the following components inspected and replaced per the CMM:

Seals & O-Rings

NAS1611-014O-ring (Dust Covers) (Repls Item 45)Qty AR

68-450O-ringQty 1

Fuse Plugs

49-155-1Plug, Thermal Relief (Part could have cadmium plating)Qty 3

Hardware

50-514Plate, InstructionQty 1

50-600Plate, InstructionQty 1

50-516Plate, IdentificationQty 1

Other Parts on the Wheel

These components are part of the wheel assembly but are not replaced during a standard tire change or overhaul. They are only replaced when inspection per the CMM identifies a rejectable condition. APSS stocks or sources these parts on request — contact us for current availability.

Bearings

L610549-20629Cone, Bearing (refer to paragraph 1.D. in the introduction to IPL)Qty AR

L610510-20629Cup, Bearing (refer to paragraph 1.D. in the introduction to IPL)Qty AR

Seals & O-Rings

68-1179Assembly, Grease SealQty 2

Fasteners

42FLW624Nut, Self-Locking (Part could have cadmium plating)Qty 12

MS20002C6Washer, Countersunk (Part could have cadmium plating)Qty 24

43-1346Bolt (Part could have cadmium plating)Qty AR

MS24693S270Screw (Part could have cadmium plating)Qty AR

MS21083N3Nut, Self-Locking (Part could have cadmium plating)Qty 6

MS24693S277Screw (Part could have cadmium plating)Qty AR

MS24693S276Screw (Part could have cadmium plating)Qty AR

AN3-3ABolt (Part could have cadmium plating)Qty 4

AN960C10Washer, Flat (Part could have cadmium plating)Qty AR

Hardware

211-47Valve Assembly, Tubeless TireQty 1

TR762-02Stem, Valve (refer to paragraph 1.E. in the introduction to IPL)Qty AR

49-336Plug, Overinflation (Includes two of Item 45A)Qty 1

60-818SpacerQty 1

148-535Bracket, AlignmentQty 2

2391-3CN285Twinsert®, Outer Heli-Coil®, (Service Part) (Order Item 128 with this part)Qty AR

4691-3CN254Twinsert®, Inner Heli-Coil®, (Service Part) (Order Item 127 with this part)Qty AR

97-126-1Weight, Balance (1 oz.) (Part could have cadmium plating)Qty AR

97-126-2Weight, Balance (1/2 oz.) (Part could have cadmium plating)Qty AR

97-126-3Weight, Balance (1/4 oz.) (Part could have cadmium plating)Qty AR

SR192LSlimsert®Qty 4

SRW192LSlimsert® (Oversized)Qty AR

2391-4CN0375Twinsert® (Service Part) (Order Item 175D with this part)Qty AR

4691-4CN0339Twinsert® (Service Part) (Order Item 175C with this part)Qty AR

Wheel Components

The structural components of the wheel assembly itself. These are not replaced on a standard service and come into play only when damage, corrosion, or cracks exceed the repair limits established by the CMM.

Wheel Halves

300-758Wheel Half Assembly, InnerQty 1

10-1546Wheel Half, Inner (NONPROCURABLE)Qty AR

300-759Wheel Half Assembly, OuterQty 1

10-1547Wheel Half, Outer (NONPROCURABLE)Qty 1

Wheel Components

170-206InsertQty 6

3591-3CN190Insert, Heli-Coil® (Repls Item 125)Qty 6

3591-3CN285Insert, Heli-Coil®, Oversized (Service Part)Qty AR

Inspection Criteria

General

General overhaul criteria — see the CMM for full specifications and numeric limits:

Drive keys: replace if damaged, corroded, or loose.
Heat shield: replace if cracked, burned, or mechanically damaged.
Bolts and nuts: replace if cracked, corroded, thread-damaged, or failing the back-off torque test.
Bearings (cones and cups): replace if spalled, discolored from heat, pitted, or showing any surface wear.
Wheel halves: replace if cracked, out-of-round beyond CMM limits, or showing seal-groove damage.
Preformed packings and O-rings: replace at every disassembly.
Retaining rings and lockwire: replace whenever removed.