Lower Unit [Shimming(Regular Rotation Models)(Except For Usa And Canada)] [2002]

Select the shim thickness (T3) by using the specified measurement(s) and the calculation formula.

Select:

• Shim thickness (T3)

Selecting steps

(1) Measure (M3).

Digital caliper: &nbsp 90890-06704

Install the bearing housing (1), thrust bearing (2), and washer (3).

(2) Install the pinion and pinion nut.

Pinion nut:   95 Nm (9.5 m • kgf, 69 ft • lb)

(3) Install the pinion height gauge.

Pinion height gauge:   90890-06702

After the wing nuts contact the fixing plate, tighten them another 1/4 of a turn.

(4) Measure (M4).

Digital caliper:   90890-06704

• Measure the clearance between the pinion height gauge and the pinion, as shown.

• Perform the same measurement at three points on the pinion.

• Find the average of the measurements (M4).

(5) Calculate the pinion shim thickness (T3).

Pinion shim thickness (T3) =   62.5 + P/100-M3-M4

• "P" is the deviation of the lower case dimension from standard. It is stamped on the trim tab mounting surface of the lower case in 0.01-mm units. If the "P" mark is missing or unreadable, assume a "P" value of "0", and check the backlash when the unit is assembled.

• If the "P" mark is negative (-), then add the "P" value to the measurement.

Example:

If M3 is "46.85 mm", M4 is "15.12 mm" and P is "-5", then

T3   = 62.5 + (-5)/100 - 46.85 - 15.12 mm

      = 62.5 - 0.05 - 46.85 - 15.12 mm

      = 0.48 mm

(6) Select the pinion shim(s) (T3).

Select the shim thickness (T1) by using the specified measurement(s) and the calculation formula.

Select:

• Shim thickness (T1)

Selecting steps

(1) Measure (M1).

Shimming plate........................(1)   90890-06701

Digital caliper............................(2)   90890-06704

• Turn the roller bearing outer race two or three times so the rollers seat. Then, measure the height of the bearing, as shown.

• Perform the same measurement at three points on the roller bearing outer race.

• Find the average of the measurements (M1).

(2) Calculate the forward gear shim thickness (T1).

Forward gear shim thickness (T1)

(T1) =24.6 + F/100-M1

• "F" is the deviation of the lower case dimension from standard. It is stamped on the trim tab mounting surface of the lower case in 0.01-mm units. If the "F" mark is missing or unreadable, assume an "F" value of "0", and check the backlash when the unit is assembled.

• If the "F" mark is negative (-), then subtract the "F" value from the measurement.

Example:

If M1 is "24.10 mm" and F is "+5", then

T1 = 24.6 + (+5)/100 - 24.10 mm

    = 24.6 + 0.05-24.10 mm

    = 0.55 mm

(3) Select the forward gear shim(s) (T1).

NOTE:

Select the shim thickness (T2) by using the specified measurement(s) and the calculation formula.

Selecting steps

(1) Measure (M2).

Shimming plate........................ (T)   90890-06701

Digital caliper............................ (2)   90890-06704

• Measure the height of the gear as shown.

• Perform the same measurement at three points on the gear.

• Find the average of the measurements (M2).

(2) Calculate the reverse gear shim thickness (T2).

Reverse gear shim thickness (T2) =  M2 - 27.4 - R/100

• "R" is the deviation of the lower case dimension from standard. It is stamped on the trim tab mounting surface of the lower case in 0.01-mm units. If the "R" mark is missing or unreadable, assume a "R" value of "0", and check the backlash when the unit is assembled.

• If the "R" mark is negative (-), then subtract the "R" value from the measurement.

Example:

If M2 is "27.95 mm", R is "+2", then

T2 = 27.95 - 27.4 - (+2)/100 mm

    = 27.95-27.4-0.02 mm

    = 0.53 mm

(3) Select the reverse gear shim(s) <T2).