Thursday, 22 October 2020

Repairing planned obsolescence in Toro 350 Ultra leaf blower

Toro 350 Ultra leaf blower bearing replacement

Overview of the patient on the healing bench

Crusty wiring

Thyristor control of rpm.

Insides
Motor type MAMCO ES144 CD
Getting dimensions of the rotor axle
Brush width
The rotor has already been damaged but is still working
Brush height
Piss-poor original sintered copper sleeve bearing
Luckily the original design was for a deep groove ball bearing 8x22x7 a.k.a. 608
Unfortunately the bearing position has not been finishing machined.
The machining reserves in the diameter are around 1mm.
The lip is in the righ diameter but the insides are a bit too tight
After some dremeling later the pocket is big enough to accept the 608 bearing
Beauty shot