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22 Dealer Service
5WPMAN0242 (Rev. 7/21/2008)
Spindle Installation (Figure 15)
Figure 15. Spindle & Pulley Installation
NOTICE
■ Pulley installation sequence is very important
for bearing life. Follow the sequence exactly.
1. Install spindle (4) through bottom of mower and
secure with cap screws and lock washers previ-
ously removed.
2. Be sure to position grease fittings toward lubrica-
tion access areas.
3. Reinstall grease fitting extension after spindle is
secured in place.
4. Install sheave (8) and split taper bushing (9) with
integral key on spindle shaft.
5. Install cap screw (35) and flat washer (34) in top of
spindle shaft. Torque cap screw to 12 lbs-ft.
6. Align non-threaded holes on split taper bushing
with threaded holes in pulley and insert cap screws
(36) and lock washers (33).
7. Alternately tighten split taper bushing cap screws
to 12 lbs-ft.
GEARBOX REPAIR
NOTE: Repair to this gearbox is limited to replacing
bearings, seals, and gaskets. Replacing gears, shafts,
and a housing is not cost effective. Purchasing a com-
plete gearbox is more economical.
Read this entire section before starting any repair.
Many steps are dependent on each other.
Fill gearbox with SAE 80W or 90W gear lube until it
runs out the side level plug.
Inspect gearbox for leakage and bad bearings.
Leakage is a very serious problem and must be cor-
rected immediately.
Bearing failure is indicated by excessive noise and
side-to-side or end play in gear shafts.
Seal Replacement
Recommended sealant for gearbox repair is Perma-
tex
®
Aviation 3D Form-A-Gasket or equivalent.
Leakage can occur at the vertical or horizontal gaskets
and shaft seals.
Leakage at the horizontal gasket or seal can be
repaired without removing the gearbox from the cutter.
Seal Installation
Figure 16. Seal Installation
NOTE: Proper seal installation is important. An improp-
erly installed seal will leak.
1. Clean area in housing where seal outer diameter
(OD) seats. Apply a thin coat of Permatex.
4. Spindle assembly
8. Sheave, H 1 BK 5.0 PD
9. Bushing, H 3/4 in Straight bore w/key
(includes items 33 & 36)
34. Washer, Flat .25 x .88 x 7 Ga
35. Screw, HHCS 1/4 NC x 3/4 GR5
1. Seal
2. Pipe or tube
3. Seal seat
4. Casting
Pipe or tube
must press at
outer edge of
seal
Incorrect
Installation