Mazda MX-5 Miata / Grand Touring. Manual — part 54

Fig. 34: Placing SST On Surface Plate & Setting Dial Gauge To Zero
Courtesy of MAZDA MOTORS CORP.

7. Set the SSTs as shown in Fig. 35 .

8. Place the measuring probe of the dial gauge at the point where the side bearing is installed in the

differential carrier and measure at the lowest position. Measure the left and right sides.

2008 Mazda MX-5 Miata Grand Touring

2008 DRIVELINE/AXLES Differential - MX-5 Miata

Fig. 35: Placing Measuring Probe Of Dial Gauge Where Side Bearing Is Installed In Differential
Carrier
Courtesy of MAZDA MOTORS CORP.

2008 Mazda MX-5 Miata Grand Touring

2008 DRIVELINE/AXLES Differential - MX-5 Miata

Fig. 36: Measuring Pinion Height Adjustment Value
Courtesy of MAZDA MOTORS CORP.

2008 Mazda MX-5 Miata Grand Touring

2008 DRIVELINE/AXLES Differential - MX-5 Miata

9. Add the two (left and right) values obtained by the measurements taken in Step 8 and then divide the total

by 2 . From this sum, subtract the sum of the number inscribed on the end of the drive pinion divided by
100 . (If there is no figure inscribed, use 0.) This is the pinion height adjustment value.

Differential pinion height

0.038 mm {0.0015 in} or less

SPACER TABLE

REAR BEARING ASSEMBLY NOTE

1. Assemble the spacer selected in the pinion height adjustment to the drive pinion.

2. Press the drive pinion into the rear bearing using the SSTs and a press.

NOTE:



When the values obtained by the measurements taken in Step 8, 9
are 0.06 mm {0.0024 in}, 0.04 mm {0.0016 in} and the tip surface of the
drive pinion value is 2, the formula is ((0.06+0.04)/2)-(2/100)=0.03.
Therefore, assemble a spacer 0.03 mm {0.0012} thicker than the
currently assembled one. The thickness settings are in increments of
0.015 mm {0.0006}, so choose one closest in thickness and install.

Identification mark

Thickness (mm {in})

Identification mark

Thickness (mm {in})

08

3.080 {0.1213}

29

3.290 {0.1295}

09

3.095 {0.1220}

30

3.305 {0.1301}

11

3.110 {0.1224}

32

3.320 {0.1307}

12

3.125 {0.1230}

33

3.335 {0.1313}

14

3.140 {0.1234}

35

3.350 {0.1319}

15

3.155 {0.1242}

36

3.365 {0.1325}

17

3.170 {0.1248}

38

3.380 {0.1331}

18

3.185 {0.1254}

39

3.395 {0.1337}

20

3.200 {0.1260}

41

3.410 {0.1343}

21

3.215 {0.1266}

42

3.425 {0.1348}

23

3.230 {0.1271}

44

3.440 {0.1354}

24

3.245 {0.1278}

45

3.455 {0.1360}

26

3.260 {0.1283}

47

3.470 {0.1366}

27

3.275 {0.1289}

-

-

NOTE:



Install the spacer with the chamfer on the gear side.

2008 Mazda MX-5 Miata Grand Touring

2008 DRIVELINE/AXLES Differential - MX-5 Miata