Securely clamp the countershaft assembly in a bench vice with wood blocks. Use a chisel (A) to raise the locknut tab (B) from the groove in the countershaft. Remove the locknut (A) and the spring washer (B).

Support 5th gear (A) on steel blocks (B), then use a press (C) and an attachment (D) to press the countershaft (E) out of the ball bearing (F). Support 4th gear (A) on steel blocks (B), then use a press (C) and an attachment (D) to press the countershaft (E) out of 4th gear.