TM-9-2520-246-34
TRANSMISSION MODEL 3052, NSN 2520-00-347-4520
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL
MAY 1978
TM-9-2520-246-34 - Page 102 of 153
TM 9-2520-246-34
Section II. REPAIR (MODEL WN-7-28)
5-5. General.
Discard the gasket.
a.
This section contains disassembly and assembly
instructions for power takeoff model WN-7-28.
b.
Cleaning and repair procedures are contained in
chapter 2, section III of this manual.
c.
Use a separate container for the parts of each
subassembly. If more than one power takeoff is being
rebuilt at the same time, use marked, separate
containers for each power takeoff to avoid getting
individual parts mixed up.
d.
Power takeoff disassembly and assembly are
accomplished by the following logical step-by-step
procedures. The assembly procedures are provided
only where special attention to a part or an assembly
is required. Refer to paragraph 5-7 for the sequence of
assembly operations. Assembly of the power takeoff is
the exact opposite of disassembly, unless otherwise
specified.
5-6. Disassembly and Assembly (Model WN-7-
28).
a. Power Takeoff Cover, Poppet Retainer, and
Poppet Spring and Ball.
(1) Remove the six capscrews and star washers
securing the power takeoff cover to the carrier. (See
fig. 5-3.) Remove the cover and the cover gasket.
Figure 5-3. Removal of Power Takeoff Cover, Poppet
Retainer, Poppet Spring and Ball.
(2) Remove the poppet retainer (fig. 5-3). Turn
the power takeoff on the side and remove the poppet
spring and ball.
NOTE
During assembly of the power takeoff,
always install a new cover gasket.
b. Shifter Shaft and Shifter Fork.
(1) Remove the safety wire and fork setscrew
from the shifter fork. (See fig. 5-4.)
(2) Remove the shaft capscrew and flatwashers
from the end of the shifter shaft. (See fig. 5-4.) Pull
the shifter shaft rearward through the shifter fork.
Remove the shifter fork and continue to slide the
shifter shaft from the power takeoff case.
NOTE
During assembly, install the shifter fork
with the screw hole on the rear side.
c. Input Gearshaft and Input Gear.
(1) Remove the input gearshaft cotter pin from
the input gearshaft. (See fig. 5-5.) Using a soft
driftpin, drive the input gearshaft from the case.
Figure 5-4. Removal of Shifter Shaft and Shifter Fork.
5-3
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