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Primary Shaft: Reassembly

  1. To reassemble, reverse disassembly procedure. Measure clearance after each component is installed. See TRANSAXLE COMPONENT CLEARANCE SPECIFICATIONS  table. See Figure .
  2. Select correct synchronizer keys. See SYNCHRONIZER KEY DIMENSIONS  table. See Fig 1 . Install keys and spring in synchronizer hub. Install synchronizer assembly with bevel facing away from input end of primary shaft. Locate synchronizer rings on correct clutch assembly.
Fig 1: Measuring Synchronizer Key
G93H24809Courtesy of MAZDA MOTORS CORP.
SYNCHRONIZER KEY DIMENSIONS

Synchro Dimension No. 1 In. (mm) Dimension No. 2 In. (mm) Dimension No. 3 In. (mm)
1st/2nd 0.748 (19.00) 0.167 (4.25) 0.197 (5.00)
3rd/4th 0.669 (17.00) 0.167 (4.25) 0.197 (5.00)
5th/Rev. 0.669 (17.00) 0.167 (4.25) (1) 0.197 (5.00)
(1) G25M-R. F25M-R clearance is 0.219" (5.55 mm).
TRANSAXLE COMPONENT CLEARANCE SPECIFICATIONS

Application Standard In. (mm) Maximum In. (mm)
Primary Shaft
3rd-To-2nd Gear
F25M-R & G25M-R .002-.008 (.05-.20) .010 (.25)
4th Gear-To-Bearing
F25M-R .008-.024 (.21-.61) .026 (.66)
G25M-R .006-.015 (.17-.37) .017 (.42)
Secondary Shaft
1st Gear Thrust
F25M-R & G25M-R .002-.011 (.05-.28) .013 (.33)
2nd-To-3rd Gear
F25M-R .007-.020 (.18-.51) .22 (.56)
G25M-R .007-.018 (.18-.46) .020 (.50)
1st/2nd Hub-To-Shift Fork
F25M-R .004-.014 (.10-.36) .034 (.86)
G25M-R .004-.018 (.10-.45) .037 (.95)
3rd/4th Hub-To-Shift Fork
F25M-R .008-.020 (.20-.50) .039 (1.0)
G25M-R .004-.016 (.10-.40) .035 (.90)
5th/Reverse
Hub-To-Shift Fork
F25M-R .016-.030 (.40-.75) .049 (1.24)
G25M-R .004-.014 (.10-.36) .034 (.86)
Synchronizer-To-Gear .059 (1.50) .031 (.80)
Reverse Idler
Gear-To-Shift Lever .004-.013 (.10-.32) .015 (.37)
Primary Shaft Run Out N/A .002 (.05)
Secondary Shaft Run Out N/A .0006 (.015)
Oil Clearance Between Shafts & Gears .001-.003 (.03-.08) .003 (.08)