Blessings A. Harawa
New Member
1 to 4 forward gears and1 to 3 reverse gears have malfunctioned on 140H ....what can be the cause?
Cat TDTO SAE30 or any SAE30 oil meeting Cat TO-4 specification.Wanting to make sure we are putting the right transmission fluid to start out with.
Thanks for the info and the humor.Cat TDTO SAE30 or any SAE30 oil meeting Cat TO-4 specification.
I assume you mean the supply to the High Range solenoid for clutch #8. Is this all the time when the key is on, or when the transmission is in neutral with the engine running, or what.?the wiring to the solenoid is reading 16.4v dc when the others are at 4.8v (from memory).
I suggest that you need to check voltages on all 8 solenoids both at the solenoid connections and at the ECM end with everything connected (you'll need back probe fittings for your DMM to get into the connector pins) under the following conditions:-Hi Nige,
ive had to put the machine back in to service . I checked my notebook, the supply voltages are 5.2v to 5.4v on all the other solenoids, 16.4v on solenoid 8. With the machine off and key to on. Transmission in park. I haven’t checked it in any other configuration.
They don't fail often, but it does happen occasionally.Out of interest, how often do ECM's fail?
The test procedures say it's rare but the Parts department at Cat say the go through a fair few of them.
On the 143H I mentioned earlier we had a "weird" voltage on #8 clutch with the key on, engine stopped, & trans control in park. Changing the ECM did not fix it. We stumbled across that chart later.Haven't got that chart thanks mate, that will be handy.
I think I'd test the voltages at both the solenoid & ECM end of the #8 clutch and maybe a couple of others (that use the same solenoid return wire) for comparison. If the one with the Code shows a distinct voltage drop between what you measure at the ECM and what you measure at the solenoid then the splice is the obvious place to look.I might go hunting for a splice first i think.
Hi sir, i faced also the some problem like this..what i do please help me?I have a similar problem (1998 Motorgrader Cat 140H 2ZK03192) will travel in all gears then stops. Wanting to make sure we are putting the right transmission fluid to start out with.
When I look back through this thread it is already dealing with three different machines and has become very confused as a result.Hi sir, i faced also the some problem like this..what i do please help me?