Terex HR16

JDSNOW · Apr 21, 2016

I have a terex mini excavator we use around the farm and hire out occasionally for extra cash. Been a great unit. Lately it started acting funny in the pilot controls. Everything else works great but the pilot controls come and go once in a while. The next problem is finding any one that knows them. Been calling around and striking out in any help diagnosing. Even having a hard time purchasing a repair manual. If any one knows of a strong dealer or shop for Terex let me know. Need some advice and possibly parts. Thanks in advance.

Lazy WP · Apr 21, 2016

If no one else chimes in, email me. I have a buddy that used to work for a very strong Terex dealer. They did more with skid
steer, but he still has the manuals.

markct · Apr 21, 2016

Come and go? As in don't work at all or
function erratic like sticking or
delayed? If not at all work then start
looking electrical, there is a solenoid
valve that allows flow to the pilot
circuit when energized, usually by a
dash switch and both armrests or safety
bars being down and occasionally a seat
switch depending on the machine

JDSNOW · Apr 21, 2016

Erratic. It has to be run at full throttle to move a function at all. After it runs a bit you can slow it down some and it will work. Seems like me it is something with hydraulic pilot pressure for pilot controls.

markct · Apr 21, 2016

Have you taken the return line off check for flow? Also bubbles like low oil or a pump suction leak can cause this, also when did you last clean the pilot filter, some are just a fine screen and some are an actual filter you replace

JDSNOW · Apr 22, 2016

Great ideas. Will look in to. I still need a manual to know where things are on this unit.

markct · Apr 22, 2016

Yes I have no experience with that particular excavator but in general that's the things to check on a hydraulic pilot system.

Omnis · Aug 3, 2021

(quoted from post at 19:14:31 04/21/16) If no one else chimes in, email me. I have a buddy that used to work for a very strong Terex dealer. They did more with skid
steer, but he still has the manuals.

sorry to res a dead thread.
Most likely years too late I got one of these HR-16's as unfortunately my first machine and no way to get a manual that's not a fake scam. Yanmar now owns this excavator model and offers no support.
IF anyone out there has this service manual plz dm me I'm rebuilding this thing and have a parts manual but no shop manual I found a place to buy cylinder seal kits for all the cylinders also.

Jim.ME · Aug 3, 2021

2 service manual set on eBay right now (ends in 20 hours). If the link below doesn't work, search: Terex HR16 and you should find the listing. They aren't free or low budget.

https://www.ebay.com/itm/254709329605?hash=item3b4ddbeec5:g:uP8AAOSwUDZclOZW

Terex HR16

JDSNOW

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Lazy WP

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markct

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JDSNOW

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markct

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JDSNOW

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markct

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Omnis

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Jim.ME

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