M/T Countershaft Reassembly

Exploded View





 

Special Tools Required
Driver, 40 mm I.D. (  07746-0030100)
 

Attachment, 30 mm I.D. (  07746-0030300)
 


NOTE: Refer to the Exploded View as needed during this procedure.

1.Clean all parts in solvent, dry them, and apply lubricant to all contact surfaces.

2.Install the distance collar and the needle bearing onto the countershaft.

3.Install the 1st gear synchro ring (A), synchro spring (B) and the friction damper (C) on the 1st/2nd synchro hub (D).

 

4.Align the fingers (E) on the friction damper with the grooves (F) on the 1st/2nd synchro hub, then install the 1st gear (G) onto the 1st/2nd synchro hub.

5.Supprting by hand, turn the 1st/2nd synchro hub side upward, then install the 1st/2nd synchro hub with 1st gear on to the counter shaft.

6.Support the countershaft (A) on steel blocks, then install the 1st/2nd synchro hub (B) with 1st gear (C) using the special tool and a press (D). Do not exceed the maximum pressure.

 

7.Install reverse gear, the synchro spring and the synchro ring on the shaft.

8.Install the distance collar (A) and friction damper (B), by aligning the friction damper fingers (C) with the 1st/2nd synchro hub grooves (D).

 

9.Install the needle bearing and 2nd gear.

10.Support the countershaft (A) on steel blocks, then install 3rd gear (B) using the special tool and a press (C). Do not exceed the maximum pressure.

 

11.Install 4th gear (A) using the special tool and a press (B). Do not exceed the maximum pressure.

 

12.Install 5th gear (A) using the special tool and a press (B). Do not exceed the maximum pressure.

 


13.Install 6th gear (A) using the special tools and a press (B). Do not exceed the maximum pressure.

 

14.Install the 32 mm shim and the old ball bearing (A) using the special tools and a press.

 

15.Measure the clearance between the old bearing (A) and the 32 mm shim (B) with a feeler gauge (C).

Standard: 0.04-0.10 mm (0.0016-0.0039 in.) 

 

16.If the clearance is more than the standard, select a new shim from the following table. If the clearance measured in 18 is within the standard, replace only the new ball bearing.

32 mm Shim
 Part Number Thickness 
23971-RPF-000 1.56 mm (0.061 in.) 
23972-RPF-000 1.60 mm (0.063 in.) 
23973-RPF-000 1.64 mm (0.065 in.) 
23974-RPF-000 1.68 mm (0.066 in.) 
23975-RPF-000 1.72 mm (0.068 in.) 
23976-RPF-000 1.76 mm (0.069 in.) 
23977-RPF-000 1.80 mm (0.071 in.) 
23978-RPF-000 1.84 mm (0.072 in.) 
23979-RPF-000 1.88 mm (0.074 in.) 
23980-RPF-000 1.92 mm (0.076 in.) 
23981-RPF-000 1.96 mm (0.077 in.) 
23982-RPF-000 2.00 mm (0.079 in.) 
23983-RPF-000 2.04 mm (0.080 in.) 
23984-RPF-000 2.08 mm (0.082 in.) 
23985-RPF-000 2.12 mm (0.083 in.) 
23986-RPF-000 2.16 mm (0.085 in.) 
23987-RPF-000 2.20 mm (0.087 in.) 
23988-RPF-000 2.24 mm (0.088 in.) 
23989-RPF-000 2.28 mm (0.090 in.) 
23990-RPF-000 2.32 mm (0.091 in.) 

17.Support ball bearing (A) on steel blocks (B) then use a press (C) and an attachment (D) to press the countershaft out of the ball bearing.

 

18.If necessary, install the 32 mm shim selected in step 15, then recheck the clearance.

19.Install 6th gear (A) using the special tools and a press (B). Do not exceed the maximum pressure.

 

20.Install the new ball bearing (A) using the special tools and a press (B).

 

21.Tighten the new special bolt (A) (left-hand threads).