Snapper RT5 Series Service Manual page 16

INPUT SHAFT BEARINGS:
Oil lite type
bushings are pressed into the case halves for the in¬
put shaft. These bushings have to be pressed out
from the inside and pressed in from the outside of
the case halves.
1. Remove welsch plug from outside of right side
case first, then place support under bearing surface
and drive old bearing out from inside of case.
2. Turn right side case over on support and drive new
bushing in place from outside surface.
3. Push new welsch plug in right side case. Using
punch and hammer strike plug in center to spread it
out and lock it in position.
4. On the left side case, the input bushing is located
under an oil seal which must be pried out with a
screwdriver blade before the old bushing can be
removed. Drive old bushing out from inside of case.
FIG. 3.25 ■ CHAIN & SPROCKET INSTALLED
5. Carefully inspect bearing and oil seal recess.
Thoroughly clean surfaces and remove burrs, sharp
edges, etc. Install replacement bushing from out¬
side of case, then install new oil seal with lip facing
toward inside of case. Use a seal driver of ap¬
propriate diameter to install this seal.
CHAIN CASE REASSEMBLY
Reassembly of the chain case is essentially the
reverse of disassembly. There are, however, the
following important points involving the reassembly
procedure.
1. The nylon spacer shown in figure 3.23 must be in¬
stalled with cupped area toward the sprocket so that
the cup fits over the weld. This spacer must be next
to the right hand case when reassembled to give pro¬
per chain to sprocket alignment.
2. Since there is not sufficient clearance to work the
chains over the sprockets after these are in the case,
the chain and sprockets must be assembled and in¬
stalled in the case as a unit. (Figure 3.21).
3. To avoid leakage problems, always install a new
gasket between case halves. (Figure 3.14).
4. Carefully guide the right side case down over the
left case after chain drive is installed. Be careful not
to damage oil seals when reassembling halves.
FIG. 3.26 • ADD OIL AFTER RECONDITIONING
5. Reinstall the self-tapping screws and alternate
from side to side while drawing the halves together.
Use a torque wrench to tighten these screws to 8-10
foot lbs. torque. Tighten the center sprocket bolt to
18-26 foot lbs.
6. Reverse the chain case removal procedure
described earlier to reassemble the chain case to
the tiller. Remember to add twenty ounces of SAE 90
weight oil to the chain case before operating the
tiller.
3-7