Replacing the Clutch Friction Discs on a Honda CL450


| 4/15/2020 12:28:00 PM


1969-honda-cl450 

BikeMaster logo

For this How-To we’re going to replace the clutch friction discs in a 1969 Honda CL450, but this procedure would work for CB450s too, and is similar on the 350s. We undertook this project because the motorcycle had been stored so long that the petcock leaked gasoline into the sump, and after fixing that problem the clutch slips. You will need clutch plates and possibly clutch springs, though those are rarely bad. A new gasket for the right side case would be useful, and a new seal for the kickstart shaft, if needed. If the oil sump plug O-ring is flat you’ll need to replace it too. Dime City Cycles will have some or all of these parts. You’ll need oil of the correct weight and amount also, in this case 1.8 liters of 10w40. A good set of metric sockets and wrenches, particularly 10, 12, 14, 17 and 19mm sizes. Start by draining the oil through the sump plug on the bottom of the engine. You’ll need a 19mm wrench, preferably a socket. Most of the sump plugs have been mangled over the years from people using SAE or adjustable wrenches in the place of metric. They also suffer from overtightening.- Keith Fellenstein

man-removing-spring-with-needlenose-pliers

1. Using needle-nose pliers, remove the spring that actuates the rear brake light switch. This spring looks suspiciously like something found in the previous owner’s junk drawer, but it works.

slacken-off-break-adjuster



2. Slacken off the brake adjuster nut at the rear wheel. A deep 14mm socket works to get it started, but you should be able to remove it by hand once the spring tension is reduced.

ELECTROMECHANICAL
4/24/2020 2:45:17 PM

As a former Honda mechanic I took many of these 450 side covers off. I used either a hand or air impact wrench to take the screws out, and a hand impact wrench to put them back in. A regular screwdriver won't put enough torque on the screws to keep them tight.


ELECTROMECHANICAL
4/24/2020 2:13:48 PM

As a former Honda mechanic I took many of these 450 side covers off. I used either a hand or air impact wrench with I believe a #2 phillips impact bit to take the screws out, and a hand impact wrench to put them back in. A regular screwdriver won't put enough torque on the screws to keep them tight.


harvey
4/23/2020 12:28:10 PM

You might mention the cover bolts look like Philips heads but are not! Invest in a good set of JIS (Japanese industrial standard) screw drivers. You will be glad you did! The Vessel Megadora (900) series are excellent.




The sound and the fury: celebrate the machines that changed the world!

Motorcycle Classics JulAug 16Motorcycle Classics is America's premier magazine for collectors and enthusiasts, dreamers and restorers, newcomers and life long motorheads who love the sound and the beauty of classic bikes. Every issue  delivers exciting and evocative articles and photographs of the most brilliant, unusual and popular motorcycles ever made!

Save Even More Money with our RALLY-RATE plan!

Pay now with a credit card and take advantage of our RALLY-RATE automatic renewal savings plan. You save an additional $5.00 and get 6 issues of Motorcycle Classics for only $29.95 (USA only).

Or, Bill Me Later and I'll pay just $34.95 for a one year subscription!




Facebook Pinterest Instagram YouTube Twitter