37
to separate the links (H30) from the levers
(H13).
3.
Disassemble the sleeve and bearing sub-assembly.
• Remove the three retainers (H32) and clevis
pins (H31) to remove the links from the release
sleeve (H25).
• Remove the external snapring (H28) from the
release sleeve.
• Using a split plate, support beneath the release
bearing (H26) on the bed of a press. Press the
release sleeve from the bearing.
• Remove the internal snapring (H29).
• Tap the bearing carrier (H27) off the bearing.
4.
Remove the levers.
• Note the direction the clevis pins (H14) are
installed so they can be reinstalled in the same
direction. Remove three retainers (H15) and
clevis pins (H14) to separate the levers from the
clutch body.
5.
Remove and disassemble the pressure plate sub-
assembly.
• Lift the pressure plate sub-assembly from the
clutch body.
• Remove the wear ring (H9) from inside the
adjusting ring.
• Remove the adjustment lock bolt, lockwasher
and adjustment lock (H19) from the pressure
plate.
• Rotate the adjusting ring counter-clockwise to
remove it from the pressure plate.
6.
Complete the disassembly of the clutch.
• Remove the facing disc (H4).
• Remove three separator springs (H36) from the
pockets in the clutch body.
INSPECT THE CLUTCH COMPONENTS:
Clutch Body:
• Friction surfaces must not have heat cracks,
must be smooth and must be flat within
.005”(.127mm).
• Drive bosses must not have wear marks exceed-
ing .003” (.076mm) depth due to wear from the
pressure plate or center plate.
• Keyway must not be worn.
• Tapered bore must fit snugly and securely on
shaft.
Pressure Plate:
• Friction surface must not have heat cracks, must
be smooth and must be flat within
.005”(.127mm).
• Drive slots must not be excessively worn.
Measure the width of the clutch body drive lug
in the worn contact area. Measure the width of
the pressure plate drive slot in the (worn) con-
tact area. If the difference between the two
readings exceeds .012” (.305mm) the worn
component(s) must be replaced.
• Threads for adjusting ring must not be damaged.
Release Sleeve:
• No fractures should exist in the bosses.
• Clevis pin holes must not be worn excessively.
A small amount of wear is normal and will not
be detrimental.
• The release sleeve bore should not be worn
beyond the limits shown below:
Basic Size
Max. Allowable Dia.
7/8” (22.23mm)
.883” (22.43mm)
1-1/4” (31.75mm)
1.258” (31.95mm)
1-3/8” (34.93mm)
1.387” (35.23mm)
1-3/4” (44.45mm)
1.759” (44.68mm)
2” (50.80mm)
2.012” (51.10mm)
2-1/4” (57.15mm)
2.259” (57.38mm)
2-1/2” (63.50mm)
2.509” (63.73mm)
• Snapring groove must not be damaged or worn
beyond:
Clutch Size
Max. Allowable Width
6-1/2” clutch
.130” (3.30mm)
8” clutch
.145” (3.68mm)
10” &11-1/2” clutches
.155” (3.94mm)
• Ball bearing must fit tight on the release sleeve.
• Release Bearing. Hold the inner race and slow-
ly rotate the outer race, feeling and listening for
rough spots, catches or a sticking condition.
• Bearing Carrier:
• Flat areas are usually worn on the trunnions.
Measure across a worn and an unworn area for
comparison. Maximum allowable wear is .015”
(.38mm).
• The snapring groove must securely hold the
Summary of Contents for HydroSeeder T170 SSA
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Page 46: ...NOTES 42...
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Page 49: ...45 T170 HydroSeeder Parts Manual Model SSA...
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