What is the bearing preload spec for the mainshaft and differential side bearings?

Mainshaft bearing preload is 0.20 - 0.25 mm (0.0079 - 0.0098 in); differential side bearing preload is 0.25 - 0.30 mm (0.0098 - 0.0118 in).

What mainshaft bearing adjusting shim thicknesses are available?

Twelve shims, part numbers 32138-01B00 through 32138-01B11, ranging from 0.44 mm (0.0173 in) up to 1.20 mm (0.0472 in), mostly in 0.04 mm steps.

What turning torque is specified for new bearings?

Final drive only: 1.5 - 3.4 N·m (15 - 35 kg-cm, 13 - 30 in-lb); total overall: 2.9 - 7.4 N·m (30 - 75 kg-cm, 26 - 65 in-lb); total compared with final drive only: 1.5 - 3.9 N·m (15 - 40 kg-cm, 13 - 35 in-lb).

How do I select the correct reverse check plunger?

By measured distance "ℓ": less than 17.78 mm use 32851-01B01 (17.17 mm); 17.78-18.18 mm use 32851-01B02 (17.57 mm); 18.18-18.58 mm use 32851-01B00 (17.97 mm); more than 18.58 mm use 32851-01B03 (18.37 mm).

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Nissan Micra Manual Transaxle S.D.S. Specs MT-28 – Shims, Preload, Plunger

Service Data and Specifications: synchronizer snap ring, side gear clearance, bearing preload shim charts

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Manual transaxle SDS tables: 3rd/4th synchronizer hub snap ring thickness, side gear to pinion mate clearance 0-0.3 mm, bearing preload and reverse check plunger part numbers.

AI caption October 2005 · Photo 176 of 412

This is page MT-28 from a factory service manual's Service Data and Specifications (S.D.S.) section for a manual transaxle, covering inspection and adjustment values. It lists selective part numbers and thicknesses for the 3rd & 4th synchronizer hub snap ring at the mainshaft (32279-01B02/B03, 2.0-2.1 mm), the allowable clearance between side gear and pinion mate gear (0-0.3 mm), and side gear thrust washer part numbers 38424-01B03 through -01B05 (0.77-0.87 mm). A reverse check plunger table matches plunger length "L" (17.17-18.37 mm) to a measured distance "ℓ" via part numbers 32851-01B00 through -01B03. Mainshaft and differential side bearing preload specs are 0.20-0.25 mm and 0.25-0.30 mm respectively, with new-bearing turning torque values: final drive only 1.5-3.4 N·m, total overall 2.9-7.4 N·m, and total compared with final drive only 1.5-3.9 N·m. Finally, a table of twelve mainshaft bearing adjusting shims (32138-01B00 through -01B11) covers thicknesses from 0.44 to 1.20 mm. All values are given in millimeters with inch equivalents. This page supports transaxle rebuild and shimming procedures.

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Frequently asked questions

What is the bearing preload spec for the mainshaft and differential side bearings?: Mainshaft bearing preload is 0.20 - 0.25 mm (0.0079 - 0.0098 in); differential side bearing preload is 0.25 - 0.30 mm (0.0098 - 0.0118 in).
What mainshaft bearing adjusting shim thicknesses are available?: Twelve shims, part numbers 32138-01B00 through 32138-01B11, ranging from 0.44 mm (0.0173 in) up to 1.20 mm (0.0472 in), mostly in 0.04 mm steps.
What is the allowable clearance between the side gear and pinion mate gear?: 0 - 0.3 mm (0 - 0.012 in).
What turning torque is specified for new bearings?: Final drive only: 1.5 - 3.4 N·m (15 - 35 kg-cm, 13 - 30 in-lb); total overall: 2.9 - 7.4 N·m (30 - 75 kg-cm, 26 - 65 in-lb); total compared with final drive only: 1.5 - 3.9 N·m (15 - 40 kg-cm, 13 - 35 in-lb).
How do I select the correct reverse check plunger?: By measured distance "ℓ": less than 17.78 mm use 32851-01B01 (17.17 mm); 17.78-18.18 mm use 32851-01B02 (17.57 mm); 18.18-18.58 mm use 32851-01B00 (17.97 mm); more than 18.58 mm use 32851-01B03 (18.37 mm).