Jb-conversions 2307 LoMax 300 User Manual

LLooMMaaxx™ 330000 4-TO-1 REDUCTION GEARSET Manufactured by JB CONVERSIONS, INC. Phone: 337-625-2379 Installation Instructions for the Dana 30

19) Begin installation of the shift rails by mounting the bearing retainer housing in a smooth-jaw clamp. Install two new springs (Fig.18) into each

21) Depress the detent ball with a punch while pushing the rail through the housing (Fig.20). Push the rail forward until 4-11/16” of the rail remai

23) Position the 2nd rail and detent ball as done on the 1st rail. Depress the detent ball with a punch and push the rail through the housing just

26) Roll the 1st rail 90 degrees in a clockwise rotation (Fig.25). You should not feel the ball detent pop into place until you tap the 1st rail rea

28) Position either of the two 27 tooth LoMax helical gears inside the case and pass the rear output shaft through the case and bore of the gear. Be

30) Reposition the case in the vertical press to allow the new slider ring and 18 tooth LoMax helical gear to be placed on the front output shaft wit

33) Bolt the rear bearing housing onto the case followed by the tapered roller bearing #15117 (Fig.32). Install the rear output yoke and seal (avail

35) Install the retainer plate (Fig.34) and original shim pack in place behind the bearing cup. Do not seal this plate yet as you may need to reshim

38) Bolt the housing in place. Install the 2 set screws into the forks using Loctite (Fig.37,37a). You will need to verify shaft end play at this

40) Place one of the thrust washers into the case as shown. Coat both sides of the washer with a tacky grease and place it into the case properly.

(A) (B) C: Place the 18 tooth LoMax helical gear onto the front output shaft as shown. Using a gap gauge, check for cle

43) Roll the idler gear into place rotating it as it is lowered (Fig.42) Fig.42 44) When the idler gear is located properly, the cross shaft ca

45) Using a brass drift or dead-blow hammer, tap the cross shaft into place such that the retainer plate and bolt can be installed (Fig.44). Fig.

Fig.1 3) Remove the 5/16” retainer bolt and plate for the cross shaft. Using a brass or wood drift, remove the cross shaft as shown (Fig.2).

5) Using a 3/16” allen socket, remove the two shift fork set Screws (Fig.4). Fig.4 6) Remove the two “pressed” detent plugs, switch, and thre

8) Remove the 6 allen or torx screws holding the input bearing retainer into the case (Fig.7). You will need to use a rubber hammer to tap the retai

10) Remove the rear bearing retainer plate and shims from the case followed by the bearing cup (Fig.9). Fig.9 11) Remove the front output beari

12) Using a 2-jaw puller remove the helical gear and roller bearing as shown (Fig. 11). Remove the slider as shown (Fig.11a).

14) Reposition the case in the vertical press and remove the rear output shaft from the helical Gear/roller bearing (Fig. 13). Fig.13 15) Disas

17) With the original shims still in place on the stock input shaft, reverse the process in #16 above and press the input gear back into the stock b