TM 5-3810-289-12
Section VII. MAINTENANCE OF CLUTCH RELEASE MECHANISM CONTROL LEVERS, AND TURNTABLE SWING
LOCK
levers. Tighten bolts when final adjustment is made.
4-17.
Control Levers
(2) Bolt on bellcranks, being sure to place them
Refer to figure 3-4.
in correct position.
a. Removal.
(3) Attach reach rods, checking to be sure
original adjustment is retained. If reach rod is to be
(1) Remove any grease fittings likely be
replaced and original length is still apparent, adjust new
damaged in disassembly.
rod to match old before inserting. If original rod is badly
bent or destroyed set and fasten both control and
(2) Remove any springs in the assembly.
operating lever in neutral position and adjust reach rod to
make proper connection. Call change to attention of
(3) Remove reach rods. Most reach rods have
operator who will have to make final adjustment after
an adjusting arrangement at one end.
Do not
experimenting with operating performance.
disassemble this adjusting arrangement unless
(4) Attach springs.
necessary and then retain setting if possible. If parts are
(5) Check to be sure all clamp connections are
not to be replaced immediately, mark adjustment setting
securely tightened, and that cotter pins are safely
so it can be made if accidentally disturbed. If a number
spread. Safe operation of the machine depends on a
controls are disassembled at the same time, number the
reliable control system.
reach rods from left to right machine (taking left as
c. Adjustment. Adjust linkage by tightening or
operator's left as sits in his seat facing controls), to save
loosening adjusting nuts on rod ends or adjustable
time on reassembly. While off from machine, be sure
devices until levers are in a vertical position when in
reach rods are placed in a safe place where they are not
neutral and aligned with each other in the main lever
likely to be bent. Replace pins and cotter pins in rods for
bank.
convenience in reassembly.
4-18.
Swing Lock
(4) To remove bellcranks, remove their fulcrum
pins. If fulcrum pin is headed with nut behind bellcrank
Refer to figure 4-6.
brackets, it is sometimes more convenient to remove the
a. Removal.
bracket bolts and then disassemble the crank from
bracket by removing fulcrum pin.
(1) Remove toggle springs and detach control
reach rod which is attached with two cotter pins and
(5) Control shafts (these are fulcrums for
washers.
grouped levers) slide out after members lock to shaft
(2) Remove pin connecting short toggle link to
have been freed by loosening clamp bolts and opened
eyebolt in locking-dog.
by inserting a small wedge in slot Before removing,
(3) Remove pin from one end of locking-dog
number the units on the shaft (front left to right) for
shaft and slide out shaft.
convenience in reassembly.
(4) Remove pin connecting long toggle link to
center casting.
b. Installation.
(5) Remove center pin from toggle linkage.
(6) Remove eyebolt from locking-dog, but note
(1) Insert control shafts (fulcrums for grouped
original position so same adjustment can be secured
levers), through holes in operating levers and bearings in
when locking-dog is reassembled.
revolving frame. Remove wedges from slots in levers
and tighten lever clamp bolts just enough to support
4-10
