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I have an older JLG40H and the platform does not turn. I

have checked the system and...
I have an older JLG40H and the platform does not turn. I have checked the system and found the hydraulic motor works and turns the worm gear but the platform does not move much. Is this a problem with the brake pads?
JA: What is the complete model and serial number of your machine?
Customer: It is a model 40h Lift. I have no serial number but it was manufactured in the mid 80's
JA: Anything else you want the industrial mechanic to know before I connect you?
Customer: No thanks
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Answered in 9 minutes by:
10/18/2017
Curtis B.
Curtis B., Technician
Category: Industrial Equipment
Satisfied Customers: 29,266
Experience: Technican turned service manager on multiple lines of equipment used in industry.
Verified

Hello! Let's see if we can can work together to get to the root of your question!

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More likley the worm gear and shaft may have a stripped keyway! Can you move platform without using motor?

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Customer reply replied 1 month ago
we can move platform but we disassembled the unit already and replaced the key

Was key damaged? Is there no key on the worm?

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Customer reply replied 1 month ago
The key way held the cap and was broken. We replaced with new.

See link below, is the gear pinned to the shaft?

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Customer reply replied 1 month ago
No it is not. It appears the gear turns via the hydraulic motor. Your pic is similar to mine
Customer reply replied 1 month ago
Did I lose you?

Is gear slipping on the shaft, looks like all that holds it is the bolt and washers in the end of the shaft.??

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Customer reply replied 1 month ago
it slips. No keyway, no bolt.

Bolt on the end of shaft and washers are to keep the gear from slipping.

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I see question is still open.??

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Customer reply replied 1 month ago
Please close.

You have to use the 5 star rating system to close the question. Please rate in a positive manner or I get no credit.

Curtis B.
Curtis B., Technician
Category: Industrial Equipment
Satisfied Customers: 29,266
Experience: Technican turned service manager on multiple lines of equipment used in industry.
Verified
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Curtis B.
Curtis B.
Curtis B., Technician
Category: Industrial Equipment
Satisfied Customers: 29,266
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Experience: Technican turned service manager on multiple lines of equipment used in industry.

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