I have a suggestion to add a tip to disassemble a lambretta rear shock
absorber: The "Lambretta Home Workshop Manual" shows how to do it with
tool 58021, but this a difficult operation. It's far easier to do it
with a ratchet fastening strap. Attach the strap on top of the spring
and at the bottom of the spring and operate the ratchet to compress the
spring. Now the collets can be removed.
Spotted by: ‘Semp’ from Paderborn, Germany