Disassembly
1. REMOVE GENERATOR CLUTCH PULLEY

(A) using a screwdriver, remove the generator pulley cap.

(b) Set SST (A) and (B).
SST 09820-63020

(c) Clamp SST (A) in a vise.
NOTICE: Be sure to fix the flat surface of SST (A) in a vise.

(d) Place the rotor shaft end into SST (A).

(e) Fit SST (B) to the clutch pulley.

(f) Loosen the pulley by turning SST (B) in the direction shown in the illustration.
NOTICE: Hold the generator assembly tightly.
(g) Remove the generator assembly from SST.
(h) Remove the clutch pulley from the rotor shaft.
2. REMOVE GENERATOR REAR END COVER

(a) Place the generator assembly on the clutch pulley.

(b) Remove the 3 nuts and generator rear end cover.
3. REMOVE GENERATOR TERMINAL INSULATOR

(a) Remove the terminal insulator from the generator coil.
4. REMOVE GENERATOR BRUSH HOLDER ASSEMBLY

(a) Remove the 2 screws and brush holder from the generator coil.
5. REMOVE GENERATOR COIL ASSEMBLY

(a) Remove the 4 bolts.

(b) Using SST, remove the generator coil assembly.
SST 09950-40011 (09951-04020, 09952-04010, 09953-04020, 09954-04010, 09955-04071, 09957-04010, 09958-04011)
6. REMOVE GENERATOR ROTOR ASSEMBLY

(a) Remove the generator washer.

(b) Remove the generator rotor assembly.
Test yourself
A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.