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  1. Monkeywithawrench

    Mack MP8 DEF system not building pressure

    2016 Mack GU713 truck with Mack MP8 engine. SCR fault coming on. DEF pump not able to build pressure. 180,000M on the truck. When this first started a month ago I ran some tests. I have Mack PTT, the licensed version through Mack. The line set coming off the DEF tank going to the pump has...
  2. Monkeywithawrench

    950G with Transmission Clutch Solenoid out of calibration

    950G loader Serial # 3JW00985 Customer bought this machine used back in December. ECM had been replaced, but the current hours weren't programmed onto the ECM. Trans ECM showed a little under 4k hrs. I had plugged into this machine back in December, no logged codes, no active codes. Now...
  3. Monkeywithawrench

    930M Aft SCR Operator Inducement issues

    We have a 930M loader, PN KTG00960 Been having issues with it going into 'Safe harbor mode' (This is derate/ limp mode) since this past fall. I keep getting codes: E1389(2) Aft 1 SCR OPERATOR INDUCEMENT First 9781.5 Last 9835.3 Count 3 E1389(3) Aft 1 EMISSIONS FAULT First 9781.6 Last 9835.4...
  4. Monkeywithawrench

    2002 CAT 446B TRANSMISSION ISSUE

    Working on a CAT 446B, PN: 5BL03066 Tranny will intermittently stop working. Connecting ET to the machine, Transmission Selector Lever shows engaging F/N/R and gears 1-4. Tranny ECM will show F/N/R and gears 1-4 when its working (which is most of the time). When the tranny stops...
  5. Monkeywithawrench

    JCB 1700B.........GIVEN TO ME FREE......I THINK ITS A 1984 MODEL

    Need some advice, input, manuals, fluid recommendations etc. A customer of mine has a relative who has developed some health issues and has this beaten 1700B that he bought with the idea of fixing it up. AFTER they bought it, they realized they bit off more than they could chew. This guy...
  6. Monkeywithawrench

    2016 Mack MP8 SCR fault.........no diagnostic codes......truck in derate......need help!!

    2016 GU713 Granite truck, MP8 engine. Had a code for EGR differential pressure sensor range being high. One of the tubes to the sensor was clogged. Took it apart yesterday, cleaned the tubes, put it back together, cleared the code out, started it ran it in the shop, then went home. I guess I...
  7. Monkeywithawrench

    972H auto lift and auto tilt questions

    So last week I was working on a CAT 972H loader serial A7D 00502. First complaint was the AC wasn't working. THEY said it was electrical. Other 'people' were poking through the wiring and said they heard a pop and smelled burned wiring. Also said that the Auto lift and tilt functions weren't...
  8. Monkeywithawrench

    Looking HARD at purchasing a 100T portable track pin press......anybody use one and have thoughts??

    I've put together home made track pin presses out of threaded rod and made a C press out of 3/4" mild steel using a 60T Enerpac ram. Spent all day Monday (which lasted into Tuesday) fighting with a 336 track. The guy likes to cut corners and just beats the crap out of his machines. Showed up...
  9. Monkeywithawrench

    2017 Pete 337 w/ Paccar PX-9 (Cummins ISL 8.9 in disguise) Engine brake iz no go

    I've got a 2017 Pete w/ the Paccar PX-9 engine. The engine brake hasn't been working for about 6 months now. Finally took the time to start diagnosing it and see what's up. So yesterday, before I lit out from one customer to another; I hooked my mulitmeter to the power wires for the...
  10. Monkeywithawrench

    Cummins software, programming, changing fueling parameters.........seeking guidance and tutelage

    I would like to learn more regarding programming, changing parameters on ECM's and the like. I'm adept at reading INSITE, CATET, etc but want to learn more. And getting into installing INSITE and other software on my laptops seems to be a whole different ball of wax regarding changing this...
  11. Monkeywithawrench

    '99 MACK RD688S, E7 ENGINE W/ VMAC III LOW POWER PROBLEMS

    Ok.....hoping somebody on here has experienced this before or is familar with how this system works. I have a customer with the above truck. He was driving it last week, loaded, when the rpm gauge and speedo stopped working and the engine lost power. This truck has never been a problem before...
  12. Monkeywithawrench

    2012 Freightliner M2 blower motor doesn't work on HIGH SPEED

    So my service truck 2012 Freightliner M2 blower doesn't work on HIGH speed. Every other speed works (1-4), just not high. I replaced the blower motor last year. Tried a new control head........no joy. Its driving me nuts why this isn't working on high. So the blower motor has the 3...
  13. Monkeywithawrench

    TEXA Truck and Off Highway Demo/ Diagnostic software

    Ok..........I bit the bullet and ordered a DEMO kit from J Ball electronics for the TEXA software. So you put $1500 down as a deposit and you get charged another $200 for shipping. Total charge showing up on your Credit card is $1700. The $1500 is returned when you send the demo unit back. The...
  14. Monkeywithawrench

    Advice on adding a Pullmaster winch to WA250-1

    I need to add a winch to a Komatsu WA250-1. I'll be putting a Pull Master H10 onto the machine. My question is....is there a power beyond port anywhere on this machine?? The machine has the stock 2 spool valve setup for bucket lift and dump. I thought about tagging into the return line off...
  15. Monkeywithawrench

    ALLISON MD3060 HELP

    So my fire dept has a '92 Freightliner with an Allison MD3060. Has really low hours and miles on it (this is just an FYI). The transmission has a push button control head. Coming up with Cat's Eyes on the control head. Tried plugging into it with the Allison software using Nexiq USB II...
  16. Monkeywithawrench

    930M HYDRAULIC PUMP COUPLER FAILURE ALSO 938M LOADER

    Last week I got a call from one of my customers. He has a 930M (KTG00960) loader that seems to be a lemon. Around 2500 hrs it was out moving snow for the town. Started cutting out and dying intermittently. Turns out a hydraulic line had chafed through some of the wires for the engine ECM (1...
    • Monkeywithawrench
    • Thread
    • 930m 938m coupling failure hydraulics hydrualic failure no brakes no implements no steering
    • Replies: 14
    • Forum: Wheel Loaders
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