Subaru Legacy BN/BS (2015-2019) Service Manual: Adjustment

Subaru Legacy BN/BS (2015-2019) Service Manual / Continuously variable transmission(tr690) / Primary pulley and secondary pulley / Adjustment

1. PROCEDURE IN REPLACEMENT OF PRIMARY AND SECONDARY PULLEY, OR IN REPLACEMENT OF PRIMARY PULLEY, SECONDARY PULLEY AND VARIATOR CHAIN

1. Measure depth “Lp” from the ST upper face to the primary pulley bearing catch surface at several points and calculate the average.

ST 499575400

GAUGE

2. Measure height “Ls” from the drive pinion retainer upper face to the secondary pulley bearing catch surface at several points and calculate the average.

ST 499575400

GAUGE

3. Calculate the following formula.

Calculation formula:

T (mm) = B + (Lp − Ls) + 31.601 − A

[T (in) = B + (Lp − Ls) + 1.224 − A]

T: Pulley alignment

A: Specified primary pulley dimension

B: Specified secondary pulley dimension

Lp: Depth from the ST upper face to the primary pulley bearing catch surface

Ls: Depth from the ST upper face to the secondary pulley bearing catch surface

31.601 mm (1.224 in): Constant

Pulley alignment T mm (in)	Shim thickness mm (in)
0.050 — 0.150 (0.002 — 0.006)	0.1 (0.004)
0.151 — 0.250 (0.006 — 0.01)	0.2 (0.008)
0.251 — 0.350 (0.01 — 0.014)	0.3 (0.012)
0.351 — 0.450 (0.014 — 0.018)	0.4 (0.016)
0.451 — 0.550 (0.018 — 0.022)	0.5 (0.020)
0.551 — 0.650 (0.022 — 0.026)	0.6 (0.024)
0.651 — 0.750 (0.026 — 0.030)	0.7 (0.028)
0.751 — 0.850 (0.030 — 0.033)	0.8 (0.031)
0.851 — 0.950 (0.033 — 0.037)	0.9 (0.035)

4. Select one to two shims so that the total thickness meets the value obtained from step 3).

Part No.	Shim thickness mm (in)
32451AA000	0.1 (0.004)
32451AA010	0.2 (0.008)
32451AA020	0.3 (0.012)
32451AA030	0.4 (0.016)
32451AA040	0.5 (0.020)

2. PROCEDURE WHEN REPLACING ONLY DRIVE PINION RETAINER OR CONVERTER CASE

1. Clean the mating surface of current drive pinion retainer and converter case.

2. Measure and record the shim thickness that is attached on the current converter case.

3. Using the current drive pinion retainer, measure depth “Lp1” from the ST upper face to the primary pulley bearing catch surface at several points and calculate the average.

ST 499575400

GAUGE

4. Using the current drive pinion retainer or current converter case, measure depth “Ls1” from the ST upper face to the secondary pulley bearing catch surface at several points and calculate the average.

ST 499575400

GAUGE

5. Calculate the “LD1” using the following formula and record it.

Calculation formula:

LD1 mm (in) = Lp1 − Ls1

LD1: Height from the primary pulley bearing catch surface to the secondary pulley bearing catch surface

Lp1: Depth from the ST upper face to the primary pulley bearing catch surface

Ls1: Depth from the ST upper face to the secondary pulley bearing catch surface

6. Using the new drive pinion retainer or new converter case, measure depth “Lp2” from the ST upper face to the primary pulley bearing catch surface at several points and calculate the average.

ST 499575400

GAUGE

7. Using the new drive pinion retainer or new converter case, measure depth “Ls2” from the ST upper face to the secondary pulley bearing catch surface at several points and calculate the average.

ST 499575400

GAUGE

8. Calculate the “LD2” using the following formula and record it.

Calculation formula:

LD2 mm (in) = Lp2 − Ls2

LD2: Height from the primary pulley bearing catch surface to the secondary pulley bearing catch surface

Lp2: Depth from the ST upper face to the primary pulley bearing catch surface

Ls2: Depth from the ST upper face to the secondary pulley bearing catch surface

9. Calculate the recorded values of “LD1” and “LD2” to obtain the positive number to select the shims.

Calculation formula: T1 mm (in) = LD1 − LD2 or T2 mm (in) = LD2 − LD1

T1, T2: Difference between new drive pinion retainer or new converter case and current drive pinion retainer or current converter case

LD1: Calculated value of current drive pinion retainer or current converter case

LD2: Calculated value of new drive pinion retainer or new converter case

Difference of the case (T1) mm (in)	Shim selection procedure
0 — 0.020 (0 — 0.00078)	Select new shim of same thickness with the shim that is used on primary pulley side of the current converter case.
0.021 — 0.070 (0.000827 — 0.00275)	Select new shim of same thickness with the shim that is used on primary pulley side of the current converter case.
0.071 — 0.125 (0.00279 — 0.00492)	Select the shim 0.1 mm thinner than the shim that is used on primary pulley side of the current converter case.
0.126 — 0.170 (0.00496 — 0.00669)	Select the shim 0.1 mm thinner than the shim that is used on primary pulley side of the current converter case.
0.171 — 0.230 (0.00673 — 0.00905)	Select the shim 0.2 mm thinner than the shim that is used on primary pulley side of the current converter case.
0.231 — 0.250 (0.00909 — 0.00984)	Select the shim 0.3 mm thinner than the shim that is used on primary pulley side of the current converter case.
0.251 — 0.300 (0.00988 — 0.01181)	Select the shim 0.3 mm thinner than the shim that is used on primary pulley side of the current converter case.

Difference of the case (T2) mm (in)	Shim selection procedure
0 — 0.020 (0 — 0.00078)	Select new shim of same thickness with the shim that is used on primary pulley side of the current converter case.
0.021 — 0.080 (0.000827 — 0.00315)	Select new shim of same thickness with the shim that is used on primary pulley side of the current converter case.
0.081 — 0.100 (0.00318 — 0.00393)	Select the shim 0.1 mm thicker than the shim that is used on primary pulley side of the current converter case.
0.101 — 0.120 (0.00397 — 0.00472)	Select the shim 0.1 mm thicker than the shim that is used on primary pulley side of the current converter case.
0.121 — 0.180 (0.00476 — 0.00708)	Select the shim 0.1 mm thicker than the shim that is used on primary pulley side of the current converter case.
0.181 — 0.220 (0.00712 — 0.00866)	Select the shim 0.2 mm thicker than the shim that is used on primary pulley side of the current converter case.
0.221 — 0.280 (0.00870 — 0.01102)	Select the shim 0.2 mm thicker than the shim that is used on primary pulley side of the current converter case.
0.281 — 0.300 (0.01106 — 0.01181)	Select the shim 0.3 mm thicker than the shim that is used on primary pulley side of the current converter case.

Part No.	Shim thickness mm (in)
32451AA000	0.1 (0.004)
32451AA010	0.2 (0.008)
32451AA020	0.3 (0.012)
32451AA030	0.4 (0.016)
32451AA040	0.5 (0.020)

Removal

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Installation

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