MAINSHAFT And Gears: Inspection: Synchronizers

WARNING: This page is about a different car, the 2002 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.

Fig 1: Checking Spline Areas
Courtesy of NISSAN MOTOR CO., U.S.A.
Check baulk rings for cracks or deformation.

Fig 2: Checking Baulk Rings
Courtesy of NISSAN MOTOR CO., U.S.A.
Check insert springs for wear or deformation.
If any crack, damage, or excessive wear is found on cam face of baulk ring or working face of insert, replace it.
Measure the movement (play, dimension "L") of 1st and 2nd coupling sleeve and 5th and 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: Measuring 1st & 2nd Sleeve Dimension L
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: 1st & 2nd Sleeve Dimension L Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.
Measure clearance between baulk ring and gear.

Fig 5: Measuring Baulk Ring To Gear Clearance
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Clearance between baulk ring and gear: Refer to CLEARANCE BETWEEN BAULK RING AND GEAR .