GEARS AND CASE
MAINSHAFT
ASSEMBLY
AND
INSTALLATION
NOTE
Drive gear pocket bearing (A-10) is
PARTIAL INSTALLATION OF MAIN DRIVE GEAR
made in two pieces. Be sure pocket
bearing is assembled with flanged end of
The diameter of the main drive gears used in the
inner race up or so it will be toward
R8000 Series auxiliaries are larger than the main drive
mainshaft.
gear bearing bore in the case. This necessitates a partial
assembly of the drive gear in the case prior to installation
of the mainshaft assembly.
3. Use soft hammer and tap outer race and roller
assembly of drive gear bearing (A-9) into front bearing
bore of case. Seat bearing tight against counterbore of
NOTE
case.
Assemble auxiliary drive gear bearing
4. Lower front end of drive gear (A-1) through top
(A-9) with outer race snap ring toward
opening of case and slide it forward into drive gear roller
gear teeth to prevent bearings from
bearing assembly (A-9).
operating with thrust load against snap
5. Check to make sure inner race of drive gear
ring.
pocket bearing (A-10) is in place in drive gear
counterbore.
1. Position inner race of drive gear roller bearing
(A-9) under arbor press with flanged end of inner race
MAINSHAFT ASSEMBLY:
up. Support inner bearing race and press drive gear (A-1)
Prior to assembly check the following parts for slip
into bearing. Be sure flanged end of inner race bottoms
fits, to insure free and easy assembly of the mainshaft
against front face of drive gear.
inside the case.
(a) Spline fit of direct and overdrive clutch
2. Position drive gear pocket bearing (A-10) in drive
gear (B-5) with clutch collar (B-6) and fit of
gear (A-1) and press into place.
internal splines on (B-5) with mainshaft
splines.
(b) Slip or loose fit of overdrive gear sleeve
(B-10) on mainshaft ground diameter.
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