tach meter

[slammer3364]

Had my Jinma 28 to the mechanic,say (he called it a tach sensor).Screws into engine block, must read the fly wheel. Is this the correct name of part?

 

[Bob Rooks]

Technically it's a reluctor but the slang terms are "mag pickup" or "tooth counter".

 

[slammer3364]

Thanks Bob appreciate it going to see if I can order part Mon.

 

[Affordable]

There are 2- syles of this tach sender, 1- has a Black rubber plug in ( like the 4- wire flat plug in for trailer lights) of a White plastic plug in

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[bjr]

I kinda hopping on this thread with a little different question on a JM 354. My tach consistently reads at High Rpm 1600. I'm not sure whether the fuel pump is just not getting the engine to rev up (2200) or my tachometer has a bad component? Any suggestions? bjr

 

[Affordable]

First try to set the sender in the correct position, tighten until it touch's the flywheel ( tractor not running ) back off 3/4 of a turn. After that if it's still reading low you have to find out the RPM of engine.It could be a bad tach ?

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[Bob Rooks]

I kinda hopping on this thread with a little different question on a JM 354. My tach consistently reads at High Rpm 1600. I'm not sure whether the fuel pump is just not getting the engine to rev up (2200) or my tachometer has a bad component? Any suggestions? bjr

You can verify the tachometer's accuracy with a photo-tach, if you have one. Got mine at Harbor Freight.

 

[Jasper661]

I just bought a 2004 JM284LE, and my tachometer is not functioning. Is it safe to assume that this is function of a sensor and not a cable?

Thanks J

 

[Affordable]

Yes there is a sensor that screws into the backside of the flywheel housing about where the top of your boot/shoe would be if it was on the clutch pedal

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[Jasper661]

Tommy

Thanks again, I know who I will go to for parts.. This is a bit off topic, and I asked this question in a different thread. I am leaking hydrolic oil out of the vented filler plug, this seems to only be a problem when going up a steep incline. Is this symptomatic of anything other than gravity...?

Thanks ..J

 

[Affordable]

This is a problem on uneven terrain, we have a vent that you can mount onto your roll bar, attach a small hose from your current vented fill plug that would help you, these came on Foton tractors but several customers have made them work on there Jinmas

https://affordabletractorsalesco.co...picid=4564&category=ZL-20&sub_category=&scid=

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
www.affordabletractorsalesco.com[ATTACH=CONFIG]376918._xfImport[/ATTACH]

 

[greg_g]

Before spending any money on dripping hydraulic fluid, you should actually confirm the cause. Most common cause is simple over-filling. Not sure how many lines you have on your dipstick, but mine had one. I treated that as the "full" line. With the dipstick set on the hole (not screwed back in). I'd unscrew, remove, wipe, insert, remove, check. Never added hydraulic fluid unless/until the dipstick came out dry. Also - since good usable hydraulic fluid should be clear as water - it's kinda hard to see on the dipstick. So I'd lay the stick horizontal on a rag or paper towel, and use how much transferred to the cloth/paper to determine how much was on the stick.

Another reason for fluid dripping down the back is a hydraulic leak on the suction side. That will typically foam up the fluid, especially if it's wet/dirty. In those cases what you're seeing come out the vent is the hydraulic "foam" that's turned back to liquid in the open air. That said - if you've got the correct level of clean fluid in the sump - it's still possible for a little to run out on severe up slopes.

//greg//

 

[Jasper661]

Greg

This is definitely leaking out of the vent hole in the filler plug, I live in the montains of Oregon and have a lot of very steep inclines.

 

[Rich Waugh]

That leakage is normal when going up steep inclines if the reservoir is full. You can either extend the breather or relocate it to solve the problem.

 

[greg_g]

Greg
This is definitely leaking out of the vent hole in the filler plug, I live in the montains of Oregon and have a lot of very steep inclines.

Then - assuming that you've got clean fluid at the correct fill level - a breather extension would be appropriate. Oh, one other thing; always lower any hydraulic implement (front loader, rear lift, etc) before shutting down the engine. That keeps the fluid inside the cylinders. If you wait to until after shutting down the engine, the fluid returns - and subsequently overfills - the hydraulic reservoir. Like I said originally, you have to first determine the cause of the spillage, before opening your wallet.

//greg//

 

[Jasper661]

Greg

At my age I am pretty careful about opening my wallet. I see you are a retired sailor, I spent a quarter of the cold war in the North Atlantic Submarine fleet.

And back to the original topic, I tracked down my malfunctioning tach, to a dirty connector.