(19) Knock out front countershaft bearing from
h. Inspect all components after disassembly and
showing excessive end play and radial clearance.
(2) Inspect the engaging teeth, replace those
gears which are chipped and snubbed.
(3) Check splines for wear and replace shafts
FIGURE 13. Main Shaft Bearing Being Pressed On
(4) Install new gaskets.
(f) Hold the countershaft from turning
(5) Inspect oil seals for hardness and cracks.
and install front countershaft retaining nut and tighten
Replace where required.
securely. Peen the nut into the milled notches of shaft.
(g) Install the countershaft front bearing
cover. Tighten the cap screws evenly and securely.
(2) Install mainshaft assembly as follows:
(a) Press main drive gear bearing on
shaft with snap ring toward front of shaft. Install bearing
Peen nut into grooves on shaft.
Remember this is a left hand thread. Pre-lubricate ball
bearing with gear oil. (See Figure 14.)
(b) Install snap ring on main shaft and
press bearing on rear section of shaft against the snap
ring with bearing snap ring to the rear. Pre-lubricate
(c) Place the sliding gear (item 23) into
case with yoke collar groove forward.
(d) Slide main shaft through rear
FIGURE 12. Pressing on Countershaft Rear Bearing
(1) Install countershaft as follows:
(a) Press rear countershaft bearing on
shaft with shield facing splined section. Install snap ring
in groove behind bearing. (See Figure 12.)
(b) Place rear countershaft gear (item
34), spacer (item 33) and front countershaft gear (item
32) in case with the longer hub sections toward the front.
The duck-bill grind of rear countershaft gear must face
sliding gear for ease of engagement.
(c) Slide countershaft through gears
and spacer and knock shaft and bearing into place in
case. Prelubricate bearing and gears with gear oil.
Figure 14. Installing Drive Gear Shaft Bearing
(d) Install rear countershaft bearing
spacer (item 38) and bearing cover assembly. Tighten
cover bolts evenly and securely.
(e) Drive front countershaft bearing into
place in case with shield to the rear.