SUBSECTION 7D
C. Support the drumshaft and remove bearing retainer,
6. Attach the hydraulic swivel to the shaft. Connect the
bearing support, bearing and sleeve.
hydraulic lines and bleed cylinder (23) to remove any air
trapped in the Iines. See Subsection 5A.
3. Loosen jam nuts (15) and turn stopscrews (14) until
there is adequate clearance around clutch band (01).
ADJUSTMENT. To adjust the clutch after it has been
4. Disconnect the line that runs from cylinder (23) to the
removed, proceed as follows (see Figure 7D-2):
shaft and remove the clutch assembly from the machine.
1. Loosen the jam nuts on all stopscrews (14).
5. Remove springs (05) from band (01). The band can now
be removed for relining.
2. Backoff on all stopscrews (14) until clutch band (01) is no
longer in contact with the heads of the stopscrews.
INSPECTION AND REPAIR. Prior to reinstalling the clutch,
Inspect and repair the following items (see Figure 7D-2):
3. Adjust setscrew (27) at the dead end of the clutch shoe to
approximately 0.058 inch clearance between the clutch
1. Replace return springs (05)
lining and the clutch drum, with clutch band guide (18) lo-
cated on the top of the clutch.
2. Remove bushing (17) from spider (16) and replace it.
4. Adjust setscrew (04) at the live end of the clutch to ap-
3. If cylinder (23) leaks or has been performing erratically,
proximately 0.063 inch of clearance between theclutch lin-
remove and overhaul or replace it. See Subsection 5D.
ing and the clutch drum.
4. Check the clutch band for distortion and reline it.
5. Loosen jam nut (25) and turn push rod (24) so the piston
in the cylinder (23) is completely retracted with the clutch
NOTE
control lever in the neutral position.
A lining kit is available. See the Replacement Parts
Manual.
6. With the clutch in the released position, turn stop-
screws (14) to center the clutch band in the clutch drum.
5. Check actuating levers (09) and spider (16) for wear. Re-
The band must be centered to prevent the lining from
place if necessary.
rubbing against the drum. There should be no pressure
6. Inspect the clutch drum to see that it is not cracked,
against the clutch band from any of the stopscrews.
scored or otherwise damaged.
ASSEMBLY AND INSTALLATION. To assemble and install
7. Start the engine and check the adjustment by engaging
the clutch, proceed as follows (see Figure 7D-2):
the clutch. Also check to see that the piston in the hydraulic
1. Place the clutch band on the spider assembly and attach
cylinder returns to contact push rod (24) each time the
springs (05).
clutch is released.
2. Install a new O-ring in the groove of spider (16).
NOTE
3. Install the clutch assembly to the drumshaft and the
After making several clutch engagements, starting at
third drum.
the top of lever (09). check for at least 0.063 inch
clearance between the clutch lining and the drum at
4. Install bearing retainer, bearing support, bearing and
60 degree intervals.
sleeve. Tighten bearing retainer using capscrews, lock-
washers and nuts.
8. Tighten all jam nuts after the adjustment has been com-
5. See Subsection 7B, Third Drum (2100J1132-9) step 9
pleted.
and adjust drum rotation.
7D-4
