TM 5-3895-359-14&P
TWO SPEED ROTOR DRIVE TRANSMISSION
g. Clean transmission externally and place on
suitable bench for repair.
1. GENERAL.
A "REX WORKS" two-speed
transmission is used to transmit two speeds of drive to
the rotor gear assembly, direct and one reduction ratio
1.63: 1. The model and serial number plate (item 17 on
Fig. 8) is attached to the upper left section of the
transmission housing. (Refer to this, when ordering
parts).
2. TRANSMISSION REMOVAL. The transmission is
removed most readily from beneath the machine as an
assembly, including the clutch housing.
Figure 6. Removing Main Shaft and Bearing Assy
a. Remove transmission end of universal joint
assembly and clutch control lever. Drain oil from
transmission. Remove gear shift lever (item 31).
h. Transmission disassembly.
b. Remove the 12 cap screws (item 5) attaching
(1) Remove drive shaft flange.
clutch housing to the flywheel housing.
(2) Remove drive gear bearing retaining
housing (item 3).
(3) Drive gear bearing is slide fit with light
interference to transmission case.
(4) Remove transmission case cover (item
15).
(5) A soft drift punch, brass or aluminum, can
be used against drive gear (item 11) to knock out drive
gear assembly from case. (See Figure 5.) (6) Main
shaft pilot bearing (item 22) may stay in rear section of
drive gear or may remain on main shaft (item 26).
(7) Remove cover (item 21) from sliding yoke
opening and cut safety wire on yoke at setscrew.
Figure 5. Knocking Out Drive Gear Assembly
c. The transmission can now be pulled backward
and downward pulling main drive gear shaft (item 11)
through the clutch assembly.
d. A suitable hoist or floor jack should be used as
the unit weighs approximately 152 lbs. Oil capacity is 4
qts.
e. Remove clutch throw-out bearing lubricating
hose (item 2) and throw-out bearing (item 1). Remove
clutch throw-out bearing fork (item 6) and actuating
shaft (item 7).
f. Remove clutch housing (item 4) from
transmission case (item 16).
Figure 7. Main shaft, Bearing and Shaft Removed.
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