MAINSHAFT And Gears: Inspection: Synchronizers

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Check spline area of coupling sleeves, hubs and gears for wear or cracks.
Check baulk rings for cracks or deformation.
Check insert springs for wear or deformation.

Fig 1: Checking Insert Springs For Wear Or Deformation
Courtesy of NISSAN MOTOR CO., U.S.A.
If any crack, damage, or excessive wear is found on cam face of baulk ring or working face of insert, replace it.

Fig 2: Checking Cam Face Of Baulk Ring
Courtesy of NISSAN MOTOR CO., U.S.A.
Measure the movement (play, dimension "L") of 1st & 2nd coupling sleeve and 5th & reverse coupling sleeve with their end fixed and the other end lifted as shown in the figure. If the movement exceeds specification, replace the sleeve.

Fig 3: Specification (Play, Dimension "L") Of 1st & 2nd Coupling Sleeve And 5th & Reverse Coupling Sleeve
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Measuring Movement (Play, Dimension "L") Of 1st & 2nd Coupling Sleeve And 5th & Reverse Coupling Sleeve
Courtesy of NISSAN MOTOR CO., U.S.A.
Measure clearance between baulk ring and gear. Refer to . "CLEARANCE BETWEEN BAULK RING AND GEAR ".

Fig 5: Measuring Clearance Between Baulk Ring And Gear
Courtesy of NISSAN MOTOR CO., U.S.A.