The Service Manual says to remove the spring pulling aft on the lock arm before checking locking forces. That makes a big difference in the final setting. Even though your gauge said you had 19 pounds of down lock force, I can tell by how easily you pushed the lock arm back into locked position that your locking force is too low, probably down around 10 pounds. And, you're only half done. You also have to do the same pull test for the uplock force.. One of the challenges with this system is getting both the up and down locking forces within the 15-20 pound range. There are lots of little tricks to getting both settings right.
Yes you are correct if you are doing a rigging of the gear you must remove the spring. I am just doing a quick check showing the procedure. You must always follow the manual. Every time I have one on jacks I check the locking force just using my feel to see if it needs a complete rigging. Most Cardinals I have come across do not meet specification and most are missing the rubber bumper. Cheers
The Service Manual says to remove the spring pulling aft on the lock arm before checking locking forces. That makes a big difference in the final setting. Even though your gauge said you had 19 pounds of down lock force, I can tell by how easily you pushed the lock arm back into locked position that your locking force is too low, probably down around 10 pounds.
And, you're only half done. You also have to do the same pull test for the uplock force.. One of the challenges with this system is getting both the up and down locking forces within the 15-20 pound range. There are lots of little tricks to getting both settings right.
Yes you are correct if you are doing a rigging of the gear you must remove the spring. I am just doing a quick check showing the procedure. You must always follow the manual. Every time I have one on jacks I check the locking force just using my feel to see if it needs a complete rigging. Most Cardinals I have come across do not meet specification and most are missing the rubber bumper. Cheers