Toro Reelmaster 3550-D Service Manual page 312

The gear box assemblies for cutting units with 5 in. reels
and 7 in. reels are very similar. The gear box for cutting
units with 7 in. reels have two (2) additional idler gear as-
semblies (Fig. 4).
CAUTION
Use the 1- -3/8" flats on the input shaft to prevent
the input shaft from rotating during adapter re-
moval. DO NOT use the 1/2" hex on the input
shaft to secure the shaft during adapter removal
or input shaft damage may occur.
1. Remove input shaft adapter (item 1) if necessary.
2. Remove the drain/fill plug and drain the oil from the
gear box.
3. Remove four (4) socket head cap screws (item 22)
and separate the gear box cover and housing.
4. Remove and discard the cover gasket.
5. Slide the sun gear, ring gear and planet gears from
the pins on the gear box housing.
6. Continue to disassemble the gear box as necessary.
7. Carefully clean any gasket material from gear box
housing and cover.
8. Inspect V--ring, seals, bearings, gears and bushings
in gear box assembly. Replace damaged or worn com-
ponents as necessary.
Assembly (Fig. 6)
1. If sun gear, ring gear or gear box housing bearings
are replaced, press bearings all the way to shoulder in
part.
2. If flange bushings are replaced, ensure bushing
flange is fully seated against part.
3. Ensure all retaining rings and O--rings are fully seat-
ed in ring groove.
4. Lubricate seal lips and O--rings before installing
shafts.
5. If idler gear assemblies were removed (Gear box for
7 in. reel cutting units only) tighten idler gear cap screw
from 85 to 95 in- -lb (9 to 11 N- -m).
6. Lubricate planet gear and sun gear pins in gear box
housing with gear oil and install planet, ring and sun
gears.
Universal Groomer (Optional)
1
3
3
1. Gear box assembly
(5 in. reel cutting units)
7. Clean gasket surface on gear box housing and cover
with solvent and install new gasket.
8. Fit gear box cover over dowel pins and install four (4)
socket head screws. Tighten screws from 15 to 40 in- -lb
(2 to 4 N- -m). In an alternating cross pattern, tighten four
(4) socket head screws from 75 to 85 in- -lb (8 to 9 N- -m).
9. Fill the gear box with 80W--90 gear oil and tighten
drain/fill plug from 32 to 52 in- -lb (4 to 5 N- -m).
Gear box oil capacity for 5 in. reel cutting units =
1.7 oz. (50 cc)
Gear box oil capacity for 7 in. reel cutting units = 3 oz.
(90 cc)
Reelmaster 3550--D/3555--D/3575--D
Page 9 - - 10
2
Figure 7
2. Gear box assembly
(7 in. reel cutting units)
3. Idler gear (2)