Winchester Repeating Arms 1400 (Historic Manual) - Manual (Page 12)

4. Do not pull trigger after
disassembly .
5. The piston is under spring tension.
With the gun upright and the
magazine minted in a safe direction,
insert a screw driver or a suitable rod
into the coils of the closing spring at
the forward end of the slot in the top of
the magazine tube. Draw back on the
tool relieving the tension from the
piston. While holding the spring
compressed, remove the piston pin
that connects the slide arms to the
piston. Place your free hand over
the end of the magazine tube, then
remove the tool from the coils and
withdraw the piston and closing
spring from the end of the tube. Dis-
connect and remove the slide arms
from the receiver.
NOTE: When reassembling the coil
spring, place the end having the smaller
coils toward the breech end of the
magazine tube.
6. With the bolt assembly in the
receiver, disengage the cocking handle
bridge by first pushing the rear of the fir-
ing pin forward with your forefinger.
Holding the firing pin in this position, tilt
the front end of the cocking handle
bridge up and move it slightly forward,
detaching the bridge from the bolt slide.
Remove
the firing pin and spring.
7. Slide the breech bolt with the
cocking handle to the rear of the
receiver. Grasp the cocking handle