Reelmaster 5200-D/5400-D Hydraulic SystemPage 4 - 59
Trunnion Seal Replacement
1. Park machine on a level surface, lower cutting units,
stop engine, engage parking brake, and remove key
from the ignition switch.
2. Remove pump control from the swashplate control
shaft on transmission (see Hydraulic Transmission Con-
trol Linkage Removal).
3. Remove hex tapping screws retaining trunnion seal
cover to transmission housing.
4. Remove trunnion seal cover with lip seal and O-ring.
5. Put seal cover in an arbor press and press out old
seal. Once removed, the seal is not reusable.
6. Inspect seal cover for damage. Inspect sealing area
on shaft for rust, wear, or contamination. Polish sealing
area on shaft if necessary.
7. Using an arbor press, press seal into position from in-
side of seal cover until it bottoms out in its bore. Be care-
ful not to damage the seal.
8. Install O-ring onto seal cover and retain with petro-
leum jelly.
9. Use a seal installer tool or wrap end of swashplate
control shaft with thin plastic to prevent damage to seal
during installation.
10.Slide seal cover assembly over swashplate control
shaft onto housing. Install hex tapping screws and tight-
en to a torque of 6 to 9 ft-lbs (8 to 12 N-m).
11.Install pump control onto transmission swashplate
control shaft. Check machine for ”creeping” when en-
gine is running with foot pedal in neutral position (see
Adjust Traction Drive for Neutral).
1. Hex tapping screw
2. Trunnion seal cover
3. O-ring
4. Lip seal
Figure 80
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Hydraulic
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