Removal (Fig. 28)
Park themachine onalevelsurface, engage parking
brake, lower cutting deck (or implement) and stop en-
gine. Remove key from the ignition switch.
11.Remove and discard gasket (item 9). Clean gasket
surfaces of transmission and front axle.
1.
12.If necessary, remove hydraulic fittings from trans-
mission. Note orientation of fittings for assembly pur-
poses.
2.
To prevent contamination of the hydraulic system,
thoroughly clean transmission and front axle.
13.Remove and discard all o--rings from removed hy-
draulic hoses and fittings.
CAUTION
IMPORTANT: Pump lever is secured to transmis-
sion shaft with Loctite #680 Retaining Compound in
addition to cap screws and lock nuts. Use puller to
remove pump lever from transmission. To prevent
transmission damage, do not strike lever with ham-
mer during removal.
Operate all hydraulic controls to relieve system
pressure and avoid injury from pressurized hy-
draulic oil.
14.If
two (2) cap screws and lock nuts. Use puller to remove
lever from transmission shaft.
pumplever(item18)removalisnecessary,remove
3.
Label hydraulic hoses to assist in assembly. Discon-
nect all hydraulic hoses from the transmission assem-
bly. Allow hoses to drain into a suitable container. Plug
or cap openings of transmission and hoses to prevent
contamination.
Installation (Fig. 28)
1.
Coat new hydraulic fitting o--rings lightly with clean
4.
On 4 wheel drive machines, disconnect 4WD drive-
hydraulic oil.Installfittingswithnewo--ringstothetrans-
mission. Orientate the fittings as noted during disas-
sembly.
shaft from transmission (see Rear Axle Drive Shaft (4
Wheel Drive) Removal in the Service and Repairs sec-
tion of Chapter 8 -- Drive Axles). Position drive shaft
away from transmission.
2. If pump lever (item 18) was removed, clean pump
shaft thoroughly andapply Loctite #680 Retaining Com-
pound (or equivalent) to pump shaft. Slide pump lever
onto shaft and secure with two (2) cap screws and lock
nuts.
5.
Drive Shaft Removal in this section).
Remove transmission drive shaft (see Transmission
6.
Removecotterpin(item19)andflatwasher(item20)
that retain traction rod end (item 50) to pump lever. Re-
move traction rod from lever.
3. Apply non--hardeninggasket sealant toboth sides of
gasket (item 9). Position gasket to front axle gasket sur-
face.
7.
Label location of wires attached to neutral switch.
Disconnect wires from switch and position away from
transmission.
4. Carefully position transmission to front axle taking
care not to move or damage gasket. Make sure that
transmission and axle gears mesh properly.
8.
Remove lock nut (item 11) that secures transmission
to transmission anchor (item 12).
IMPORTANT: During assembly, make sure that up-
perleftscrew(item1)extends throughholeintrans-
mission anchor (item 12).
CAUTION
5.
Apply Loctite #242 (or equivalent) to threads of cap
screws (items 1 and 2). Secure transmission to front
axle with cap screws, washers (items 3 and 4) and
spacers(items5and6)usinglocationsnotedduringdis-
assembly. Tighten cap screws in a crossing pattern. Af-
ter tightening, make surethatmounting spacers (item6)
do not rotate.
Support transmission when removing it from the
front axle to prevent it from falling and causing
personal injury.
9.
Loosen and remove four (4) cap screws (items 1and
that secure transmission to front axle. Locate and re-
2)
trieve washers (items 3 and 4) and spacers (items 5and
Note location of washers and spacers for assembly
purposes.
6. Securetransmissiontoanchor(item12)withlocknut
(item 11). Retain upper left cap screw (item 1) while
tightening lock nut.
6).
10.Carefully
ferential.
pull the transmission from the frontaxledif-
7. Connect machine harness wires to neutral switch.
Groundsmaster 3280--D/3320
Page 5 -- 35
Hydraulic System
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