Clutch Care for Optimal Race Performance
The LO206 sealed go-kart engine is designed for easy maintenance and longevity, but the clutch still needs regular care and inspection.
Here's why:
The clutch is essentially the transmission for the engine, transferring power to the rear axle. If it slips or doesn't engage properly, you lose acceleration and speed.
Over time, the contact surfaces between the shoes and bell can become glazed or rusty, reducing grip. This causes clutch slippage. Smoothing these surfaces maintains optimal traction.
Debris buildup inside the shoes can prevent full contact. This reduces surface area grip. Cleaning clears out these particles.
The lubrication needs to be just right. Too much oil causes slippage, and too little causes excessive wear. Proper lubing maintains the ideal function.
The tight tolerances and high RPMs generate plenty of heat. This accelerates the wear of components like the bearings. Relubricating preserves them.
Clutch issues like worn shoes and bearings greatly impact shifting performance. Catching problems early prevents on-track problems.
Routine maintenance allows inspection for damage like cracks or abnormal wear. Identifying problems before they cause a failure is key.
A freshly serviced clutch ensures you have maximum, consistent grip lap after lap. This maintains acceleration and a competitive edge.
While LO206 clutches are very durable, routine maintenance as part of race prep is essential for getting the best performance and longevity from your engine. A smooth-running clutch equals a fast kart!
A clean and well-maintained Hilliard clutch is critical for a go-kart to perform at its peak on race day.
Here’s a step-by-step process for servicing your Hilliard clutch and preparing it for competition.
Gather the Necessary Tools
To service the clutch, you’ll need:
Impact driver with 1⁄2” snap ring pliers
Flathead screwdriver
Hammer
Magnetic parts tray
220 grit sandpaper or Scotch-Brite pad
WD-40
Brake cleaner
Conventional oil (like 10W30)
Rags
Disassembly
Start by removing the clutch's snap rings on both sides using the pliers. Control them as they come off so they don’t go flying.
With the snap rings removed, the clutch will separate into its main components. Organize the magnetic tray's bearings, spacers, shoes, and bell.
Cleaning
Spray down the components with brake cleaner to remove old grease and debris. Focus on getting into crevices on the shoes and bell contact surfaces.
Use 220-grit sandpaper or a Scotch-Brite pad to smooth and resurface the bell and shoes where they make contact. This removes any roughness or glazing for optimal grip.
Clear out any clogged debris inside the shoe channels using a screwdriver or wire brush. Knock free any stuck particles.
Relubrication
Wipe the resurfaced bell with a thin coat of WD-40 using a rag. Avoid over-lubricating it.
Relubricate the bearings by dipping a finger in light conventional oil and coating the inside and outside. Remove any excess oil.
Reassembly
Reinstall the components in order - spacers, bearings, shoes, and bell. Line up the channels so the shoes fully seat.
Replace both snap rings by pressing them into the grooves until they are fully seated. Spin the reassembled clutch to check for smooth operation.
Routine clutch maintenance like this helps ensure consistent performance and avoids issues on race day.
With a freshly serviced Hilliard clutch, your LO206 go-kart will be ready to compete at its best in your next race.
