DIY install of Marsh Preload Adjusters on my Triumph Bonneville

The Marsh adjusters are made for the Interceptor which means the existing spacer tubes can be use.

BHPian dinu2506 recently shared this with other enthusiasts.

The Marsh preload adjusters for the RE Interceptor got delivered couple of days back and as expected it was a straight fit for my Bonneville. Since I already had experience installing similar adjusters a few years back the the same bike, I knew exactly what to do. Planned to do it today, so got everything ready by yesterday. First things first - The build quality of the March adjusters is really good, far better than what I have been running on my bike. They are heavier, built very well and the design is far superior. The Marsh adjusters are made for the Interceptor which means the existing spacer tubes can be used and it provides a 4mm additional preload than stock at stock setting. The spacer tubes of the Bonnie cannot be used in the same way as the Inty, so I calculated the length of the tube needed so that I get a 3mm softer than stock preload at softest setting and 15mm harder than stock at the tightest setting. As I had done earlier, I used a 1.25inch CPVC pipe for the spacer. I have been using a similar setup last 5 years and it has held up well. When I opened the fork tops today, I could see that the earlier CPVC tubes were as good as new.

The following preparations were done beforehand

• 2 spacer tubes in CPVC of the desired length\
• 2 washers with center hole to be placed on top of the spacer tubers before the adjuster is screwed in
• The required tools
• 32mm ring spanner to tighten the Marsh adjuster
• 19mm box spanner to remove the old adjuster
• Stanley socket and Allen set
• Scissor jack to push up the bike so that the front wheel is off the ground and the forks are fully extended
• Rags and clothes
• White petroleum jelly to lubricate the threads before installing
• Masking of the marsh adjuster mounting nut and adjustment nut with Teflon tape to prevent damage

Went about the job in the morning and could finish it in 45 minutes since everything was planned and things were in place. Really happy with the outcome especially the looks - the black adjuster with the golden stem really looks good on my black bike. Performance as expected was good and similar to what I already had. Happy to have the same performance from a made-in-India product of much better quality and good looks.

The process is not being explained as it is similar to the ones explained earlier in this thread.

Some pictures of the install

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