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Home  »  Engine, Transmission, wheels/Tyres and Heating/Cooling  »  AXLES, DIFFERENTIALS & REAR HUBS  »  AXLES AND REAR HUBS  »  HUBS  »  HUB UNIT REAR TR4A-6 EXCHANGE

HUB UNIT REAR TR4A-6 EXCHANGE

Part No:
137496EX
Price
£451.20
Price Ex VAT @ 20%
£376.00
Deposit *
£100.00

CURRENTLY UNAVAILABLE

* Deposit Required: A deposit is required for this part. This will be refunded in full or in part on receipt of exchange item, depending on the condition of the part received. Vat at the prevailing rate will be added to the deposit if applicable.

TR4A-6 rebuilt standard rear hub exchange. Consider new hub 137496-1

Triumphs original rear hub unit is a reliable design, with many many thousands built by Triumph and in service in a variety of climates and conditions all over the world. However, with many of these units now over 50 years old and some having been rebuilt more than once, they can suffer from the following problems: -
 
•A specialist puller is needed to disassemble, something few workshops have resulting in component damage when alternative methods of disassembly are employed
•Failures of the original units is almost always due to the unit having been rebuilt with unserviceable parts.
•An original unit that has not been rebuilt must be nearing the end of its useful life.
•They are difficult to rebuild and maintain the correct bearing end float.
•Many have flanges that are too thin as they have been skimmed.
•The Yoke UJ internal diameters can become oversize due to repeated disassembly and reassembly.
 
Revington TR rebuild their own units and have the luxury of the correct CHURCHILL puller to remove the flange, however rear hub rebuilding is getting more and more difficult as the scrap rate for units we receive on exchange is over 65%. We are not prepared to rebuild hubs with substandard parts and for this reason we retain a deposit until we can verify the reusability of the parts returned. Part or all of this deposit may have to be retained to enable us to buy another old hub unit on the open market if the parts returned are not useable.
 
This can make an exchange hub unit a costly business. We therefor recommend a new uprated hub unit 137496-1 with the following benefits
 
REDESIGNED REAR HUB UNIT 137496-1 IS MADE FROM NEW TOP QUALITY COMPONENTS, SOLVES THE PROBLEMS OUTLINED ABOVE AND PROVIDES THE FOLLOWING UPGRADES
•Splined shaft and flange construction does not need special tools to separate
•Bearings are solidly spaced using shim washers so do not go out of adjustment
•Wear compensation is easily accomplished with DIY tools.
•Shaft thread diameter increased by 85% for extra security
•Flange design has increased diameters and radii to avoid cracking and failure.
•Bearing size is increased and the bearing design has been validated by Timken UK.
•Only Top quality materials, bearings and seals are used.

Whilst inspecting the hubs have a good look a the drive shafts too. If there is any play, you should consider replacing them. Order 2 x RTR1371.
 

Fitting Tip

Use an old nut to ensure the studs in the trailing arms will take the 16 lbft torque with the hub attached to the trailing arm but whilst it is disconnected from the drive

shaft. If any studs start to pull, use a Helicoil kit RTR5046 to rectify any threads that are suspect.
 

 

 

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