Myford Super 7 clutch

[john fletcher 1Participant @johnfletcher1]

At ‘Mates’ we have a Myford Super 7 with noise from the clutch area. before dismantling the assembly, is there any peculiar thing I should be looking out for. I have an exploded view from the hand book, but nothing like info from some who has already done the job. John

[Brian WoodParticipant @brianwood45127]

John,

What sort of noise?

Brian

[Martin KyteParticipant @martinkyte99762]

If it’s a screech when engaging you need a couple of drops of oil on the cone clutch. Open the main motor belt guard. With the motor off activating the  clutch lever you will see the bronze cone move in and out creating a gap. A couple of drops of 3 in 1 at the top of the gap will eliminate the screech.

[Charles LamontParticipant @charleslamont71117]

What sort of noise?

Super 7’s are prone to noises and vibration from the primary drive. A worn belt can produce a clattering noise, as can a motor, countershaft or spindle pulley that is not tight on its shaft. I even have different belts for high and low range hanging on a nail near the belt guard. The link belt is quiet in high range but too stiff to go nicely round the motor pulley in low range. I have recently bought a ZX section belt for low range, where it is quiter than a not very old Z section belt, but both are noisy if used in high range.

I am asuming the ‘modern’ bronze/iron cone clutch. If the clutch squeals when engaged (particulary in the top two speeds) it wants a bit of light oil on the cones. Check the clutch lever has a little free play when the clutch is engaged.

Be careful if you have to let the big spring out if its cage, it is quite fierce and may bite. If memory serves you can get at the pulley bearings from outside, but you would have to let it out if the thrust bearing needs attention. In withdrawing the countershaft don’t forget all the circlips and keys that have to be removed, some rather a pain to get at.

[noel shelleyParticipant @noelshelley55608]

DID ALL S7s have the cone clutch, I don’t think so. There is an earlier type of clutch. Noel.

[BizibilderParticipant @bizibilder]

Take a look at this before you dismantle anything:  Disassembly

and this: Reassembly

Well worth a look for all Super 7 owners.

[Bizibilder]

On Bizibilder Said:

Take a look at this before you dismantle anything:  Disassembly

and this: Reassembly

Well worth a look for all Super 7 owners.

Not sure whether the cone clutch came in with the S7 or later, but the original ML7 clutch used a pair of Raleigh Runabout moped brake shoes. Very good it is too, albeit after the Runabout ceased production in 1971, supplies would have got harder to obtain.

[Neil LickfoldParticipant @neillickfold44316]

My S7 is from 1972, and has the tapered cone clutch.

[Author]

Posts