Carrier econo gears

[MUNC]

Has anyone run across carrier economizer gears cracking at drive hubs? i'm looking for a fix. i dropped actuator to second gear and reversed rotation,but of coarse it cracked. local carrierdealer said no replacement parts available so instead of a $5 gear i have to replace a $2500 econo. i have 19 units on this roof 6 need gears. lubed all bushings and freed up blades i dont look forward to dropping this big dollar repair on the customer. any advise whould be appreciated

[HvAckid82]

they are plastic, correct? You could try to weld it, I never did but I have welded up PE towers and PVC pipe. Or you could look for a local shop that makes plastic parts or a cnc shop for plastic work. Hell you could look for a plastic sheet that is the same material/thickness and use one of the gears and make a template. Take a dremel and do it yourself

[MUNC]

its like pullin teeth to get anything up here in the mountians. the gears are plastic, dont think making them is a viable option. the way they attach to act. and blade is definately a blown plastic design. still cant believe micro metl / carrier doen,t have parts for these things. next time i'm at this place i'll see if i can Macgyver some thing

[Dallas Duster]

A model number would be nice.

[Octopus]

Has anyone run across carrier economizer gears cracking at drive hubs? i'm looking for a fix. i dropped actuator to second gear and reversed rotation,but of coarse it cracked. local carrierdealer said no replacement parts available so instead of a $5 gear i have to replace a $2500 econo. i have 19 units on this roof 6 need gears. lubed all bushings and freed up blades i dont look forward to dropping this big dollar repair on the customer. any advise would be appreciated

A-Have a shop cast it in loss wax and make a sand casting -inexpensive mold
B-Have a injection mold made -expensive mold
C-Have a CNC programmer make you a program to CNC the part into I would suggest 6061T6 aluminum. I was a cnc programmer. use to make all kinds of stuff on my off hours for guys.- on the cheap
D-Find one on ebay or something or rig something up maybe your gear will cross over to another make model...
E-Have the gear repaired by a shop preferably as stated previously by a plastics shop.
F-Change manufacturer design. I have been known to use a Chane and sprocket in old equipment.

[MUNC]

these are 48HGDT14AB-60KD5 UNITS. thanks chrisvacman, unfortunatly it would prob. be in denver to find such a shop (200 miles one way) to find said type of shop i havnt let my fingers do the walkin yet, i'll look around

[y7turbo]

There is a fix for that style of econo with the plastic gears.

Is the actuator mounted to the side of the damper assembly with a small shaft that fits into the square hub on the plastic gear ? And the square hub is what cracks right? not the whole gear?

if so
The fix is drilling a hole through the center of the gear, slide the new longer shaft through the gear, use a bracket to attach the new shaft to the damper blade, and reinstall the actuator and tighten it to the new shaft.

I installed this on a smaller carrier, but I heard of guys at our shop using this fix on the same size unit you're talking about.

Our shop had the parts made by a machine shop, but I thought that carrier has these parts as well..

[MUNC]

thanks y7turbo, i was thinkin of trying some thing like that. all carrier out here is willing to do is sell the whole frickin econo package. btw spent 38 yrs in chic. 13 @ local 597. hope you guys are staying busy

[Dallas Duster]

thanks y7turbo, i was thinkin of trying some thing like that. all carrier out here is willing to do is sell the whole frickin econo package. btw spent 38 yrs in chic. 13 @ local 597. hope you guys are staying busy

Is the gear broken or just stripped out? You can also just use a piece of 3/8" all thread , roll pins , and some 3/8" coupling nuts. That`s as long as the gear is not broken.

Bad thing about these gears is that Ruskin I think JCI owned them, used to make lots of economizers then I think JCI became a Carrier competitor when they bought York. And it`s kinda hard to get some injection molding company to retool up reproduce cheap gears that there isn`t much demand for.

[MUNC]

thanks guys, the hubs on these gears are broken, not the cogs themselves. this unit actually "slugged" a scroll and stressed the spot welds on the side of the can to the point of loosing charge, leakin like a beech. newer units too

[Dallas Duster]

thanks guys, the hubs on these gears are broken, not the cogs themselves. this unit actually "slugged" a scroll and stressed the spot welds on the side of the can to the point of loosing charge, leakin like a beech. newer units too

Comfortlink controls? How old are these unit's?

[MUNC]

automated logic Target store, these went in in 06 serial says there 05's

[MUNC]

finally have the solution for my units. micrometl has a kit pt# 50tg680030 with instruction sheet #99ta526383a new gears and longer shaft. waiting for parts to show up then let the fun begin. will report back on the results

[seascott]

It's a horrible design, as soon as the econo gets some dust in it the gears bind against the sheet metal and the actuator dies or the gear hubs strip out. I have made the repair by replacing the gears which, while not a fun job is possible and cheaper than a new econo. Carrier never seems to have a handle on MicroMetl products. Maybe because micrometl changes their design as often as Carrier does. Moving forward, silicone at the inspection keeps the gears from binding.

[Peztoy]

Finally. I have a good answer. Good and cheap. I had the same thing happen to me. The white plastic gear splits at the square hub in the middle. I placed a gear clamp (hose clamp) on the hub. It pulls the cracked part back together thereby keeping it from spreading apart again.

[MUNC]

finally have the solution for my units. micrometl has a kit pt# 50tg680030 with instruction sheet #99ta526383a new gears and longer shaft. waiting for parts to show up then let the fun begin. will report back on the results

sorry i didn't get back sooner, easiest way with this repair is to drill out old gear install new shaft and clamp for blade. worked out slick:

[hvac69]

Experienced the same problem, for a quick fix I swapped the one with the cracked hub with another since the teeth were fine and only the square drive hub was cracked, I figure I have 9 more to use. Crap Carrier engineering:(

[MUNC]

Experienced the same problem, for a quick fix I swapped the one with the cracked hub with another since the teeth were fine and only the square drive hub was cracked, I figure I have 9 more to use. Crap Carrier engineering:(

What i originally did was drop the actuator down one gear then reversed the action of the actuator. This lasted awhile till that gear broke. It took a long time tracking down the repair kit part numbers for this problem, but all in all it's done and takin care of

[rogerram]

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[jpsmith1cm]

rogerram


This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread.

You can find the rules for posting and qualifications here (http://hvac-talk.com/vbb/showthread.php?t=957002).

Additional infractions may result in loss of posting privileges.