Join me on a journey tackling one of the T25’s notoriously difficult areas – the trailing arms. Sparks fly whilst I remove hub nuts, disconnect brake lines, snap bleed nipples and meet the tin worm.
If your bolts are seized like mine, I recommend using a power saw to cut them off. I used an angle grinder but struggled with reach and control in such a tight area.
When fitting new Powerflex set I use the GoWesty technique to fit the bushings with a 30cm M12 threaded rod, nuts and washers. The only difference is I use jubilee clips to compress the bushing, instead of an tapered pipe (or the specialist 3053 VW tool).
To calculate the 500Nm force for the hub nut I used the following formula to calculate where I should stand on the breaker bar:
Force x Distance = Torque
80kg (my weight) x 64cm = 502Nm
Useful resources and research:
- Fitting OE rear trailing arm bushes without special tools
- Servicing Rear Brakes
- Rear Brake Backplate
Part numbers in this post:
- Trailing Arm Bush – T3 [Polyeurethane] – 251501131A
- Trailing Arm / Left – 251501401E
- Trailing Arm / Right – 251501402E
- Trailing Arm Mount / Left – 251803197
- Trailing Arm Mount / Right – 251803198
- Hub Nut – T3 / Rear – N90149601
- Split Pin – N0125482
As mentioned in the video, you could use T4 Trailing Arm Inner Bushings instead which are a split design so really easy to fit. They are the same part number (251501131A).