Contents Wiring diagrams Section: Automatic Trans All sections

Overhaul - A650E: Other Lexus LS III

Automatic Trans 5 illustrations ~290 words

TRANSMISSION

Vehicle Identification Number (VIN) is used for current application of component parts and assemblies. VIN is stamped on vehicle identification plate located at top left corner of dash, and on certification label located on driver's door jam. (Scheme 120)and (Scheme 120).

Scheme 119

Scheme 119: TRANSMISSION

Scheme 120

Scheme 120

GEAR RATIOS

Gear RangeGear Ratio
1st3.357:1
2nd2.180:1
3rd1.424:1
OD1.000:1
5th0.753:1
Reverse3.431:1

TRANSMISSION GEAR RATIOS

COMPONENT TESTS

Note. Torque converter is a sealed unit and is serviced as complete assembly. Perform following tests to check for defective converter. Torque converter and transmission cooler must be thoroughly cleaned and flushed if transmission is contaminated.

One-Way Clutch Check

  1. Install turner and stopper of One-Way Clutch Tester (09350-30020) in torque converter. (Scheme 121) Turner fits in inner race of one-way clutch. Stopper fits in notch of converter hub and outer race of one-way clutch.
  2. Clutch should lock when turned counterclockwise, but should turn freely when rotated clockwise. If necessary, clean converter and retest clutch. Replace converter if clutch still fails test.

Scheme 121

Scheme 121

Drive Plate (Flywheel) Runout Check

Using dial indicator, measure drive plate runout. (Scheme 122) If runout exceeds.008" (.20 mm), or if ring gear is damaged, replace drive plate. If installing a NEW drive plate, note position of spacers. Tighten bolts in a crisscross pattern to 61 ft. lbs. (83 N.m) on GS 300 and IS 300 models. On all other models, tighten bolts in a crisscross pattern to 36 ft. lbs. (49 N.m), then tighten each bolt an additional 90 degrees.

Scheme 122

Scheme 122: Drive Plate (Flywheel) Runout Check

Converter Sleeve Runout Check

Temporarily mount torque converter to drive plate. Mount a dial indicator with needle resting on converter sleeve. (Scheme 123) Rotate converter. If runout exceeds.012" (.30 mm), reposition converter on drive plate and recheck runout. If runout exceeds specification, replace torque converter.

Scheme 123

Scheme 123: Converter Sleeve Runout Check