Читать книгу The Gun Digest Book of Rimfire Rifles Assembly/Disassembly - J.B. Wood - Страница 32

Disassembly:

1. Remove the magazine and open the stock. Cycle the action to cock the hammer, and set the safety in on-safe position. It is not necessary to take off the folding stock for further disassembly, but if removal is required, drift the stock. retaining pin out upward. The stock can then be slid off toward the rear.

2. The stock latch can be removed by drifting out the roll cross pin. If this is done, the coil spring and the magazine ejector plunger can then be taken out.

3. The stock release lever and its coil spring can be removed by drifting out this roll cross pin. The other stock components are riveted in place, and routine removal is not advisable.

4. The lower receiver is retained by two hollow cross pins at the rear, and a hinge post at the front. The cross pins are flared on one side and must be pushed out in that direction-in this case, toward the left.

5. Drift or push out the rear cross pin.

6. Drift out the other cross pin.

7. Draw the bolt back slightly to clear the extractor from its recess in the barrel, and keeping the bolt snugged against the lower receiver, pivot the upper receiver upward.

8. Remove the bolt assembly from the top of the lower receiver. Take care that the plastic buffer at the rear is not lost.

9. Remove the ejector from its recess in the top of the bolt.

10. Remove the recoil spring assembly from the side of the bolt. This unit is staked at the ends, and routine disassembly is not advisable.

11. Drift out the cross pin at the lower front of the bolt.

12. Remove the cocking handle plate toward the front. Take care that the firing pin return spring is not lost.

13. Remove the firing pin return spring.

14. Drift out the extractor pin downward. Note that this pin is angled toward the center of the bolt, not straight downward. Control the extractor and its spring.

15. Remove the extractor from its recess.

16. Remove the extractor spring from its well in the bolt.

17. Tip the firing pin out of its recess. The cross pin is staked in place, and it is not removed in normal takedown.

18. For easier access to the parts in the lower receiver, you may wish to separate it from the upper receiver. To remove the pivot shaft, use a properly-fitted screwdriver to take off the cap screw. It will be necessary to hold the head of the shaft on the other side. Grip it with non-marring pliers, or, as I did, just press it against the wooden edge of a workbench. The finish is easily marred, so work with care.

19. Push out the pivot shaft and separate the upper and lower receivers.

20. Drifting out the cross pin at the front of the sight unit will allow this assembly to be pushed off toward the front. If this is done, take care that the positioning key, in a recess on top of the barrel, isn’t lost. If necessary, the flanged nut at the rear of the forend can be unscrewed for removal of the barrel. There is also a positioning key at the barrel flange, at the rear. In normal takedown, this entire system is best left in place. The factory suggests that it not be dismounted.

21. The twin magazine catches and their coil springs are pivoted and retained by vertical roll pins.

22. Slide open the pistol grip cap and use a screwdriver to remove the mounting screw.

23. Remove the pistol grip from the lower receiver.

24. Move the safety to off-safe position, restrain the hammer, pull the trigger, and ease the hammer down to fired position. Restrain the hammer and drift out the hammer pivot pin.

25. Remove the hammer and its spring assembly.

26. The bushings are easily removed from the hammer.

27. Further disassembly of the trigger group is not advisable because of possible damage and the difficulty of reassembly. However, in repair situations, it may be necessary to take out certain parts, so we will show the sequence without removal. The safety-levers are retained on each side by internal C-clips. When these are turned to position and pried off upward, the levers can be removed, along with the center shaft and the safety block.

28. Drifting out this cross pin will release the bolt hold open and its coil spring for removal.

29. Drifting out the trigger cross pin will allow the trigger to be moved forward and turned down into the guard opening for removal.

30. Drifting out this cross pin will release the sear assembly for removal. Caution: The primary and secondary sears and their coil and torsion springs will be released, so control them. A slave pin and much patience will be necessary for reinstallation. In normal takedown, this system is definitely best left in place.

31. By sliding off the upper and lower ribbon clamps, it is possible to disassemble the magazine. The winder assembly, however, should not be taken apart. If a magazine malfunctions, it is best to return it to Calico for service.