MPT Model
WARNING: This page is about a different car, the 2003 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
- Measure distance "L" from end of extension case and rear drive shaft with ST.
ST 398643600 GAUGE
L = Measured value - 15 mm
(L = Measured value - 0.59 in)
Courtesy of SUBARU OF AMERICA, INC.
A: Measured value
B: ST thickness [15 mm (0.59 in)]
L: Distance from end of extension case to end of rear drive shaft
- Measure the distance "l
" from the transmission case mating surface to the reduction drive gear end surface with ST1 and ST2.
l = Measured value - 50 mm
(l = Measured value - 1.97 in)
ST1 398643600 GAUGE
ST2 499577000 GAUGE
Fig 2: Measure Distance "L" From Transmission Case Mating Surface To Reduction Drive Gear End Surface With ST1 & ST2Courtesy of SUBARU OF AMERICA, INC.
A: Measured value
B: ST thickness [50 mm (1.97 in)]
l: Distance from end of transmission case to end of reduction drive gear
- Calculation equation:NOTE: Calculating H:
When clearance is at 0.05 mm (0.0020 in) and 0.25 mm (0.0098 in), then select a suitable thrust needle bearing from the table.
H = (L + 0.45 mm) - l - T
[H = (L + 0.0177 in) - l - T]
T: Thrust needle bearing thickness
L: Distance from end of extension case to end of rear drive shaft.
0.45 mm (0.0177 in): Gasket thickness
l : Distance from end of transmission case to end of reduction drive gear
H: Shim clearance 0.05 - 0.25 mm (0.0020 - 0.0098 in)
Example:
When, L = 18.60 mm (0.7323 in), l = 15.05 mm (0.5925 in)
Calculation when clearance is 0.05 mm (0.0020 in)
H = (18.60 + 0.45) - 15.05 - 0.05 = 3.95
[H = (0.7323 + 0.0177) - 0.5925 - 0.0020 = 0.1555]
Calculation when clearance is 0.25 mm (0.0098 in)
H = (18.60 + 0.45) - 15.05 - 0.25 = 3.75
[H = (0.7323 + 0.0177) - 0.5925 - 0.0098 = 0.1476]
After calculation, the value of H becomes between 3.75 and 3.95, therefore select bearing thickness of 3.8.