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I have a 2004 Terex TH636C Telehandler, and the problem I am…

I have a 2004...

I have a 2004 Terex TH636C Telehandler, and the problem I am having with it is that it keeps neutralizing when operating, or when I press brakes it neutralizes. And if I want it to go back in gear I have to press the brakes or give it two pumps for it to go back into gear. What do you think this problem can be?

Mechanic's Assistant: What is the complete model and serial number of your machine?

It's a 2004 Terex Th636C Telehandler Serial no. 046003

Mechanic's Assistant: Anything else you want the Equipment Mechanic to know before I connect you?

Serial no. 046003

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Answered in 5 minutes by:
8/5/2020
Mechanic: Curtis B., Technician replied 2 years ago
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,947
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified

Hello! Let's see if we can work together and come to a satisfactory conclusion!

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Customer reply replied 2 years ago
Ok
Mechanic: Curtis B., Technician replied 2 years ago

When brake is pressed, it kicks the transmission into neutral through a declutch valve. The spring may be broken, or the valve is sticking.

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Customer reply replied 2 years ago
where is this spring located?Hello goodnightAre you still available?
Mechanic: Curtis B., Technician replied 2 years ago

The valve will be in the transmission control valve.

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Customer reply replied 2 years ago
Do you by chance have a schematic ?you are saying I would have to pull the transmission down to get to this declutch valve?
Mechanic: Curtis B., Technician replied 2 years ago

no, the modulator on top.

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Customer reply replied 2 years ago
Can you please tell me which item number it is?
Mechanic: Curtis B., Technician replied 2 years ago

#14

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Customer reply replied 2 years ago
Curtis how many of this pieces should I get?
Mechanic: Curtis B., Technician replied 2 years ago

None until you take it apart and see if that is problem!

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Customer reply replied 2 years ago
if it is not the problem what else should I check into?
Mechanic: Curtis B., Technician replied 2 years ago

It has some switches that are for the declutch.

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Customer reply replied 2 years ago
Can you send me the schematic on those also?
Mechanic: Curtis B., Technician replied 2 years ago
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Customer reply replied 2 years ago
good morning curtis
Mechanic: Curtis B., Technician replied 2 years ago

Good morning

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Customer reply replied 2 years ago
what is the part number on the switches ?
Mechanic: Curtis B., Technician replied 2 years ago

#48 in the attached.

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Customer reply replied 2 years ago
hey curtis you are the best.
Mechanic: Curtis B., Technician replied 2 years ago

No, but I try!

Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,947
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified
Curtis B. and 87 other Construction and Road Equipment Specialists are ready to help you
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Customer reply replied 2 years ago
good morning curtisis it possible for you to send me a schematic so i can test the solenoids and the shifter
on my 2004 Terex TH 636c telehandler?
Mechanic: Curtis B., Technician replied 2 years ago

The original parts list I sent has the electrical schematic!

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Customer reply replied 2 years ago
i am looking through it now
Mechanic: Curtis B., Technician replied 2 years ago

OK>

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Curtis B.
Curtis B.
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Satisfied Customers: 43,947
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