To access the piston it is necessary to release the cocking arm. A spring guide is part of the trigger block. The end block and spring simply lift away. Continue unwinding the compressor until the trigger block and then the spring become free. This is not absolutely necessary but does help and it prevents the safety slide and sear spring from pinging away as the end block (trigger block) is released. Now take the cable tie and wrap it around the end block, passing under the safety slide, and secure it. Remove bolt and then slowly unwind the compressor about ½”. It may help to just nip the end block up as you release tension on the bolt. I used a 7/16” af spanner (I think this is 11mm) as it was to hand and fitted perfectly. Now start to undo the end block securing bolt in front of the trigger. Just take up the pressure on the end block. Place wooden block in position so that when you start to remove the end block, there is no pressure on the safety slide. My compressor lets me clamp the cylinder to the compressor bed to avoid undue movement.
Place action in the compressor, preferably trigger uppermost and barrel to the left. Lift action out of stock and put stock safely to one side. Remove stock two screws at front (do not lose the serrated washers) and the front screw in the trigger guard. Small wooden block to fit on the end block so that the safety catch is not compressed when dismantling the rifle. I use one that you can release and use again. Other tools in addition to normal turnscrews would include a short (6”) plastic cable tie. Important: You will need a spring compressor with a ‘long throw’ … there is considerable preload on the original spring. Note this Guide does not include a trigger strip.
Oh dear … classic symptom of a failed piston washer. On first test shot, the pellet did not leave the barrel. It was clear the rifle had had very little use. So here it is, a guide based on my very recent experience with a virtually new 124 (.177 the. I thought there was a guide on the Idiot’s Guide, but there was none. Breech seal is 3mm c/s, 16mm od, 10mm id.Ī little time ago someone asked on the BBS for advice on stripping one of these sought after classics. The removed length was 320mm a new spring may measure c. Useful information: Mainspring is 40 coils of 2.94mm wire, 14.8mm inner diameter, 20.8mm outer diameter. Here is a description in words thanks to Phil: With thanks to Ian for the first set of pics and Rod for the trigger strip down on the yellow forum.
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