Aces High Bulletin Board
General Forums => Aces High General Discussion => Topic started by: Blinky on May 02, 2024, 05:43:27 PM
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Got a problem with a forklift. Just a shot in the dark.
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Got a problem with a forklift. Just a shot in the dark.
it's always DEF problem lol jk you don't have to worry about that my freightliner on the other hand..SMH
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Definitely a shot in the dark
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it's always DEF problem lol jk you don't have to worry about that my freightliner on the other hand..SMH
DEF or DPF? Meh, same stuff. Al gore's HONEY pot. :bhead
Want to clarify, it's a customers machine and I'm a brand new mechanic lol. Wasn't looking for free help on my own machine :D
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Definitely a shot in the dark
About like my aim anyway!
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Thats when you point them over to the new shiny forklifts in the corner and tell them because you feel for them, you will give them a deal that you cant give to anyone else
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Got a problem with a forklift. Just a shot in the dark.
I thought they were propane.
What’s a matter with it?
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Its an IC forklift. Hydrostatik drive with inching gear / transmission cut-off. It wont take gear. F or R. Good rpms, boost is ok but 100 PSI low, fully serviced. Path to ground is good, F and R relays are good, shifter is good, park brake is good etc etc..
Just wondering if it's gonna be the drive motors / hydraulic pump or if there's something with forklifts / hydrostatik in general OR if everybody is the same in the general with us as **** forklifts :rolleyes:
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Thats when you point them over to the new shiny forklifts in the corner and tell them because you feel for them, you will give them a deal that you cant give to anyone else
I don't get paid for sales... yet ;)
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Its an IC forklift. Hydrostatik drive with inching gear / transmission cut-off. It wont take gear. F or R. Good rpms, boost is ok but 100 PSI low, fully serviced. Path to ground is good, F and R relays are good, shifter is good, park brake is good etc etc..
Just wondering if it's gonna be the drive motors / hydraulic pump or if there's something with forklifts / hydrostatik in general OR if everybody is the same in the general with us as **** forklifts :rolleyes:
Do the forks still have up, down, and tilt control? If so the hydraulic pump is still working then. You need to verify that the parking brake is fully releasing allowing the Hydrostatic drive to operate the drive motors. Check the stupid stuff, make sure nothing is blocking the release like a tape ball, rag, and what not. Verify the park brake sensor is functioning correct too. Also make sure the seat belt and the sensor in the seat are working becuase that will also prevent a forklift from moving too.
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Do the forks still have up, down, and tilt control? If so the hydraulic pump is still working then. You need to verify that the parking brake is fully releasing allowing the Hydrostatic drive to operate the drive motors. Check the stupid stuff, make sure nothing is blocking the release like a tape ball, rag, and what not. Verify the park brake sensor is functioning correct too. Also make sure the seat belt and the sensor in the seat are working becuase that will also prevent a forklift from moving too.
Of all people!! <S> (OFWG)
Mast functions strong, at 90% if I had to guess (not an operator)
I will look into the physical release as it may be near the drive motors, which is a tight fit for my fat ace. However I checked resistance and v from the fuze all the way down to chasis ground via wiring diagram, and everything checks out minus a few already replaced butts. I fear it may be within the harness inside the tubing. It does have electrovalves for F and R which are a bit above me but the relays and connectors are right. With the drive motors and EV park brake its hard to tell if its actually working as it wont free-roll. But according to the juice and relays, everything is good.
PS I did notice it has two pumps, as I'm learning on SLs, they have a tandem and a charge pump. Was curious if it was the same as there are 2 pumps.
Im 6 weeks into the job from barely ever turning a wrench other than basic maintenance lol. Not loving the FLs so far TBH
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Do you have a volt meter or power prob?
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Do you have a volt meter or power prob?
Yep, went all the way down the harness with it
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.
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Yep, went all the way down the harness with it
Apply power to the drive motor with your power probe. If it doesn't run, you have a bad drive motor......assuming you did confirm good ground and power going into motor. Confirm with resistance test via voltmeter
Check/test any relays/fuses and switches first
It may just be a faulty relay, so make sure you test those before you buy anything
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Apply power to the drive motor with your power probe. If it doesn't run, you have a bad drive motor......assuming you did confirm good ground and power going into motor. Confirm with resistance test via voltmeter
Check/test any relays/fuses and switches first
It may just be a faulty relay, so make sure you test those before you buy anything
Does it being hydrostatic change anythin? It uses hydraulics to drive the motors (i think)
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Does it being hydrostatic change anythin? It uses hydraulics to drive the motors (i think)
It could, but a faulty pump would blow fuse or trip the relay...that's why ya need to check them 1st. As the fluid flow will be controlled/directed electrically...
Also, you may have to check for fluid flow in all hoses to narrow down where the fluid flow stops. Each direction should have it's on isolated path of flow..i.e up/down, forward/back and in/out if equipped.
If any battery power goes to control levers, check that too. All depends on how new the forklift is. The new one's can get pretty stupid sometimes with all of the electrical circuits and computers these days. John Deere is making things that absolutely can't be repaired unless you take it too them..(computer stuff). Other companies have been following suite.
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It could, but a faulty pump would blow fuse or trip the relay...that's why ya need to check them 1st. As the fluid flow will be controlled/directed electrically...
We assumed the pump was good via the mast but like our loaders it also has a charge pump. Just adjusted boost and with some help on the inching valvve (flathead driver) it gets great boost, more than enough to change gears. From reading the diagram and legend, there are no relays / fuses for the drive motors, only the transmission cut off relay and e valvve. The relay is good, even clicking with gear changes. I will look at the schematic but i think its solely hydraulic. (Again, im 6 weeks into this job from never turning a wrench :joystick: )
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We assumed the pump was good via the mast but like our loaders it also has a charge pump. Just adjusted boost and with some help on the inching valvve (flathead driver) it gets great boost, more than enough to change gears. From reading the diagram and legend, there are no relays / fuses for the drive motors, only the transmission cut off relay and e valvve. The relay is good, even clicking with gear changes. I will look at the schematic but i think its solely hydraulic. (Again, im 6 weeks into this job from never turning a wrench :joystick: )
Okay good, electric good, Next check for pinched hose or clogged fluid filter if the system......it u havent already
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Under full disclosure: I was called a mechanic at work and did work on Diesel engines. Retired 2 yrs ago. I rebuilt locomotives and my job was responsible for the air system. I was a air mechanic. I probably should of told you that first. :uhoh :lol
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ZZZZZZZZZ
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Under full disclosure: I was called a mechanic at work and did work on Diesel engines. Retired 2 yrs ago. I rebuilt locomotives and my job was responsible for the air system. I was a air mechanic. I probably should of told you that first. :uhoh :lol
Nah I greatly appreciate the pointers, turned into a crazy day. for whatever reason, after idling the machine for 30+ the muffler was extremely hot when i rested my entire forearm on it. Weird how that works.
Only filter left was main circuit which i was avoiding. after going shoulder deep in her, the filter was actually 10 / 10 perfect. shocking. replaced it anyway and moved onto the control unit / servo valve for F and R as its next on the list..
I greatly appreciate the pointers.
And 100% can appreciate you working the air systems cuz just F that in general lmao.
:salute
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ZZZZZZZZZ
Nah, the motor makes more of a DERDERDERDERDERDER kinda sound. Close tho!