SECTION 31 - IMPLEMENT POWER TAKE-OFF (PTO) - CHAPTER 4
31-8
Step-up Gearbox - Assembly
Clean and inspect all parts. Inspect shafts for
excessive wear or damage to splined surfaces, and
for damage on bearing shoulders. Check gear teeth
for chipping or cracks, and the mating splines for
wear. Replace any damaged parts.
Replace bearings if any pitting or brinelling of bearing
cup or cone is noticed. Replace both bearing cup and
cone if damage is found; do not intermix old and new
bearing components.
Always install new shaft seals when rebuilding the
step-up gearbox.
1411/4-7
16
1. Drive the two shaft seals, 1, in flush with the front
of the gearbox housing, and apply grease to the
seal lips.
1411/4-6
1
17
Install three new bearing cups into the front side
of the gearbox housing, seating them securely
against the shoulders in the housing. Apply oil to
the new bearing cones, and press them onto the
rear end of each shaft as indicated:
Input shaft, 1
- short, non-splined end
Intermediate shaft, 2
- end opposite threaded hole
Output shaft, 3
- long end with 21 spline shank
1411/4-7
1
2
3
18