Cars & Vacuum cleaner

SXE10 TOYOTA Altezza was so adjusted to meet with "Zero Thrust" condition in combination with the correction on total toe-in value from 4 mm to 2 mm, right side tendency while straight running disappeared safe and the stiffness in centric steering steering in one position has much increased, and frequency and extent of steering adjusting while straight running has also far decreased as a matter of fact. Anyway, further observation is necessary in various situation to know the actual Zero Thrust condition.

Ruined car battery burdened in Altezza was charged taking 24 hours interval at 2A/16,5V has recovered it's original performance, the opened voltage after the affair is 13,05V, so almost 100% capacitance.

BC7 SUBARU Legacy LSi US model has a good axle alignment condition after all, but infamous tight corner locking phenomena still remained even after the rear transfer clutch replacement the other day. This phenomena will disappear after some interval of break-in period, so the engineer says with one accord. End muffler cutter shows some carbon like dirt, some mixed inclusion for high octane of premium fuel might be the reason?

Broken ball bearing parts 629ZZ ordinary one was replaced into new one in vacuum cleaner and it's original performance was re-acquired again after 20 years use. Almost of the use of this electric machine would not do the same as my measure this time, so the life span of the motor main shaft supporting ball bearing is set as the life of this vacuum cleaner, strictly writing the life of the grease lubricant impacted in the sealed bearing.
Strong air flow and the heat from the commutator of the motor rotor might have brow away the lubricant, this might be the main reason of the bearing destruction. If it had to happen one of them, why did have to happen on the commutator side?
From a different standing point of view, continuing to use old machinery so persistently like myself might save money but destroy the construction of commercial circulation economy?