New Venture Gear 4500 (RPO MW3) 5-Speed

1 of 2:

2 of 2:

1 of 2:

2 of 2:

1. Remove shift lever stub by pressing down on cap and turning counterclockwise.

2. Mount transmission in transmission adapter plate tool No. J24462 and transmission holding tool No. J23642-O1 or equivalents.

3. Remove shift cover bolts and shift cover. It may be necessary to use a soft faced hammer to separate shift lever cover from transmission case.

4. Remove mainshaft nut, washer, spline seal and yoke assembly.

5. Remove rear oil retainer bolts and rear oil retainer.






6. Remove vibration damper as shown.

7. Remove main drive gear bearing retainer bolts.

8. Mark main drive gear and case for alignment, then remove main drive gear bearing retainer.

9. Remove main drive gear and main drive gear bearing.

10. Support overdrive fork and drive overdrive shift rod pins out from the bottom of fork.

11. Remove clutch gear retaining ring.

12. Slide overdrive fork as far forward as possible while working overdrive gear assembly forward. If unable to remove overdrive gear assembly, remove overdrive clutch gear, synchronizer ring, spacer and overdrive gear bearings to lower and remove overdrive gear. Do not let synchronizer come apart.

13. Remove countershaft thrust washer and pin.

14. Remove bearing retaining plate bolts.

15. Remove mainshaft bearing retainer plate, shims and mainshaft rear bearing cup.

16. Move synchronizer sleeves into neutral position, then raise overdrive shift lever up out of the way and hold with rubber band.

17. Lift mainshaft assembly by the nose through the front. It may be necessary to twist and wiggle mainshaft assembly to remove second speed gear from countergear.

18. Remove bearing retaining plate bolts, countershaft bearing retaining plate and shims.


19. Remove countershaft rear bearing cup.

20. Remove reverse idler gear shaft, reverse idler gear, washers, bearings and spacer.






21. Remove countershaft rear bearing as shown. Ensure bearing puller is attached to bearing inner race.

24. Remove countershaft assembly, countershaft bearing cup and countershaft front bearing cup.

25. Remove overdrive shift lever retaining pin, overdrive shift lever shaft and overdrive shift lever.






26. Remove overdrive shift lever shaft bushings using overdrive shift lever shaft bushing remover tool No. J-38803 or equivalent.