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Silica Giro chuck issues.

Old 12-12-19, 07:26 PM
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R3drider
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Silica Giro chuck issues.

I recently picked up a Silica hiro v3 chuck and it won't hold the valve over 100 psi. Is there something I'm missing? Can an adjustment be made? Or is there a better option out there? I for now will continue to use my crack pipe, but would love to get a hold of a chuck that actually does what the hiro is supposed to do. Very disappointed in silica.
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Old 12-13-19, 04:37 AM
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Morelock
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There are minor adjustments you can make to the SILCA Hiro, specifically the gasket preload. To do this you need the "arm" in the open position, then slightly (small amounts) turn the "face" of the chuck, likely clockwise.

Most issues I see people have are either ^^^ or by ramming the Hiro down on the valve as hard as they can, which has the potential to damage the gasket. There is a big red "button" on the back of the chuck that looks like it's just begging people to press down on it... it's much better to press down firmly closer to where it screws onto the schrader, then turning the lock lever.

It takes a little bit of finess and playing with it to get it right, but you should definitely have no problem getting well over 160+ psi once it's installed correctly on the valve.

Troubleshooting
- if air is leaking from the Chuck - check the preload, check the gasket for damage
- if air is leaking further back - check the pump, check the connection from hose to chuck
- if Hiro is popping off the valve as you're inflating, you are not getting a firm enough "grip on the valve with the chuck... check preload, check lever arm tightness, check press down force to establish connection (too much or too little) check valve - test on different valve.

failing all that, contact Silca customer support, they should be able to better diagnose the issue.
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Old 12-16-19, 07:02 PM
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Thanks fore the tips. Spent a little time fidelling with the adjuster and eventually got it to hold tight. Really happy to not have too build arm strength via the one hand pump method. Silica is no longer on my naughty list.
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Old 12-16-19, 07:15 PM
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My experience with Silca has been nothing but spectacular. Asked for decals for a 50 year old pump and they supplied them free! I have a number of older model pump heads that will likely be replaced with the newer head. I still use a model 52 on my compressor mounted tool for inflation, but I am about to even change that one out. They even carry latex tubes for the race crowd, not available anywhere else. Smiles, MH
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Old 12-17-19, 01:54 AM
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Originally Posted by Morelock View Post
There are minor adjustments you can make to the SILCA Hiro, specifically the gasket preload. To do this you need the "arm" in the open position, then slightly (small amounts) turn the "face" of the chuck, likely clockwise.

Most issues I see people have are either ^^^ or by ramming the Hiro down on the valve as hard as they can, which has the potential to damage the gasket. There is a big red "button" on the back of the chuck that looks like it's just begging people to press down on it... it's much better to press down firmly closer to where it screws onto the schrader, then turning the lock lever.

It takes a little bit of finess and playing with it to get it right, but you should definitely have no problem getting well over 160+ psi once it's installed correctly on the valve.

Troubleshooting
- if air is leaking from the Chuck - check the preload, check the gasket for damage
- if air is leaking further back - check the pump, check the connection from hose to chuck
- if Hiro is popping off the valve as you're inflating, you are not getting a firm enough "grip on the valve with the chuck... check preload, check lever arm tightness, check press down force to establish connection (too much or too little) check valve - test on different valve.

failing all that, contact Silca customer support, they should be able to better diagnose the issue.
Brilliant tips, I was having problems as well, going to try these! Thank you!
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Old 12-17-19, 06:25 AM
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topflightpro
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Originally Posted by R3drider View Post
Thanks fore the tips. Spent a little time fidelling with the adjuster and eventually got it to hold tight. Really happy to not have too build arm strength via the one hand pump method. Silica is no longer on my naughty list.
One of these will hold the chuck in place: https://www.lowes.com/pd/Jorgensen-6...amp/1001053746

I did have to cut/file mine down to fit better, but it works very well.
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