G5Twin Repair: KTG520-R Walkthrough

WARNING:
Tampering with or attempting to repair a machine used with A2L refrigerants is prohibited unless performed by an Appion Factory Trained Service personnel.
The repairs outlined in the video are only to be performed on an Appion product that has not been used with A2L refrigerants
The G5Twin contains Valve seals, springs, and O-rings that may become worn over time. The KTG520-R kit is perfect for replacing all seals, springs, and O-rings on the valve plate, cylinder, and piston head. If further assistance is needed, contact Appion at [e-mail]
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Learn more about this kit:
appiontools.com/ktg520-r/
About Us:
Appion is Applied Innovation. We never stop challenging ourselves to develop smaller, lighter, and more innovative tools for HVAC/R technicians. Appion’s solutions for fast Refrigerant Recovery, Evacuation and Measurement include: G5Twin Recovery Machine, TEZ8 Vacuum Pump, appION Wireless Digital Gauges, and MegaFlow Vacuum-Rated Tools.
Visit us at AppionTools.com

[@keehn20]

Note! When he states that the notch on the head needs to face towards the relay and then tells you to repeat on the other head. Make sure you catch that gold nugget. Make sure the other head has the notch facing towards the relay as well. I bought a used machine off eBay and got it for 200$. They said it wouldn’t pump. Figured it just needed a rebuild kit. Nope. The seller did a rebuild on it and put one of the notches facing the wrong way. Knowledge will always be power.

[@newkidontheblockism]

How long does this repair take?

[@keehn20]

@@newkidontheblockism 45 mins tops.

[@BobSmith-bt5ue]

Awesome video bro👍🏻👍🏻👍🏻 I got the same pump. Where did you get the kit and what’s the part number? My model and serial number has worn off.

[@Appiontools]

Thank you! The part number for this kit is #KTG520-R. You can buy the kit directly on our website at this link:appiontools.com/ktg520-r/

[@newkidontheblockism]

How long does this repair take?

[@Appiontools]

On average it should take 45 minutes

[@OlGoodJoe]

I'm having a leak down problem that is not a cylinder problem. I know it's not a cylinder problem because when pressurize directly to the high side cylinder port right off the head, it will not bypass through the valves but when the block is in place there appears to be a bypassing of the pressure. I have checked all fittings and bubble tested the condensers while assembled.
I feel it may be a problem inside the block that holds the gauges and mounts the condensers. Can you tell me how the block is ported (how pressure travels through it) so I can diagnose where the problem is please? Would sure appreciate it. I will check back here and I can be emailed at [e-mail] Thank you.

[@OlGoodJoe]

I just sent an email to the above link.

[@ball-se6gu]

I need to take the damn motor off the pump. Shit vid.