Embedded Files
General LDU specifications
General LDU specifications
Tesla LDU specs @ 057 (hmm dead link)
Tesla's motor design is based on that of AC Propulsion.
Center of gravity: see these pictures and youtube here and here
To date, Tesla is not adding a weep hole to reduce seal leak collateral damage like flushing the grease out of the rotor bearings and damaging the inverter electronics. Since Tesla no longer manufactures cars with this LDU, there is probably no longer a high volume tooled factory to produce LDUs at the lowest cost. Tesla likely has multiple contract rebuilders on multiple continents. It seems unlikely they can dramaticaly reduce replacement LDU price.
Weight
Weight
LDU is ~300 lb.
Rotor is ~70 lb.
Stator ~100 lb.
Tesla subframe containing LDU is ~500 lb.
Note the lack of good lifting eyes on the inverter when removed from its case.
Measured Torque Values
Measured Torque Values
The values below correspond to the fastener re-tightened to its original position after marking both fastener and hole (or using existing marking) and breaking loose. So the numbers below are not the break-away value.
Torque specifications for the bottom side of the LDU.
Torque specifications for the motor side of the LDU.
Torque specifications for the inverter side of the LDU.
Torque specifications for the interior of the LDU.
Plumbing (and some modifications)
Plumbing (and some modifications)
See also:
Notes:
Some LDU revisions do not even come with a (5mm) breather hole behind the speed sensor! So maybe a breather hole between the reluctor wheel chamber
and rotor chamber is not needed?
Bearings exist (not in LDU) that actually have a vent hole to prevent blowing the seal off (source).
Pressure differences need to be equalized without breating through bearings because that could force the grease out of them.
Page updated
Google Sites
Report abuse