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  1. 4

    Volvo a40d hydraulic break pressure issue.

    Appreciate the info. We adjusted the valve behind the cab and got pressures where we needed them. Thx.
  2. 4

    Volvo a40d hydraulic break pressure issue.

    Just an update. We switched the brake pump and got good pressure now. Only thing is we have too much pressure. Both brake gauges climb into the red. Would anybody know where to adjust brake pressure on these trucks. Thx
  3. 4

    Volvo a40d hydraulic break pressure issue.

    Hey guys. I have an issue where when you step on the service brake both truck and trailer hydraulic pressure goes below 2500psi and kicks the park brake. Wondering if anybody else has had this problem. Right know im leaning towards hydraulic brake pump. Curious if anybody knows what else to...
  4. 4

    Terex Ta27 trans or hyd pressure surge.

    Hello. I’m working on a terex 2004 ta27 haul truck. The issue is the there is a surge it seems in the trans pressure. Every time it it seems to release it the trans temp needle with peg out and then zero out. Also when the body is raised or lowered at an idle the truck will try and stall out...
  5. 4

    Komatsu pc400lc-7 merge divider valve.

    Hi jgm. I’ve had a gauge on both sides of the pump there both running between 2700-3000psi. Rpms are 1850-1900 rpms. Under a load it I think it went down to 1750 rpms. Thanks
  6. 4

    Komatsu pc400lc-7 merge divider valve.

    Thanks for the info. Found a list of codes. D196ka Service return relay disc Dhpbma R pump p sensor abnormality F pump p sensor abnormality Dhs3ma Arm curl ppc sensor abnormality dhs4ma Bucket curl abnormality Dxa0ka Pc-epc sol disc there’s nothing much in the mechanical codes. Just some...
  7. 4

    Komatsu pc400lc-7 merge divider valve.

    hey John I’ve been able to get to that point in the menu. But not sure where to pick up codes at or diagnostics. Thanks
  8. 4

    Komatsu pc400lc-7 merge divider valve.

    the machine was working fine. Then all of a sudden it seemed to start loading lifting power in the boom. To finish the job we would have to step on the travel pedals while lifting the boom with a load to get boom to raise, that would get to raise at normal speed. Then shortly after we started...
  9. 4

    Komatsu pc400lc-7 merge divider valve.

    Hi john. I have tried to google how to check for codes but haven’t had any luck. But I’ve gotten into the monitoring part of it and see that the merge function is turned on. But doesn’t seem to be working when demand calls for both sides of the pump. I don’t have any codes displayed on the home...
  10. 4

    Komatsu pc400lc-7 merge divider valve.

    Hello. We have a komatsu pc400-7 excavator. We are haveing problems with getting the merger valve to engage. We are having low lifting power in the boom and low steering power in the tracks. We have replaced the self pressure reducing valve do to high pilot pressure. That seemed to make all...
  11. 4

    Detroit Allison shifter

    Hey Ken. Just wanted to share the out come. Got the shifter on the truck, but for some reason we burned up a couple more micro switches. I think the shifter cam was out of sync.. We switched them out reinstalled shifter and everything seems to be working properly. I appreciate your help and...
  12. 4

    Detroit Allison shifter

    Hey Ken. Tinkered with the shifter and schematic over the weekend. Was able to get the wireing back to factory configuration. Now I have the correct solenoids engaging in each selection. Now just have to get everything on the truck and try it. Will keep you posted. Thanks for the help!
  13. 4

    Detroit Allison shifter

    Hey Ken. I tinkered with it for a little bit yesterday.had a lot off wires out of place. Have to go thru and double check. We’re mating the shifter to a terex 3307 off road haul truck with the Allison clbt6952 that was an atec system. We’re hoping this does the trick. I’ll keep you posted...
  14. 4

    Detroit Allison shifter

    Wow. I believe that’s exactly what I have. My shifters got 8 micro switches numbered 1-8. I’m gonna look at my shifter later on today. I really appreciate it, I was starting to lose hope here.
  15. 4

    Detroit Allison shifter

    Hey Ken. I appreciate your your efforts. The Allison Service manual illustrates the same diagram. We tried to get the shifter lined up with the solenoid pattern at first by switching the wires at the micro switches on the shifter. From there things went completely off course. Right now for...
  16. 4

    Detroit Allison shifter

    Thanks for the info kshanson. We’ve been having trouble with this truck for a while. It was equipped with the atec system but could never get the truck to move. So we decided to convert it to electric manual 24v system. We have a book for that setup as well. So when we did the test in the...
  17. 4

    Detroit Allison shifter

    Hello. Wondering if anybody would be able to help me out with a wireing diagram of the Detroit Allison 24v electric manual shifter for a allusion 6-5000 series trans. Long story short the old shifter went bad and we were to find a replacement but I think it might have been reconfigured. Any info...
  18. 4

    It28f no powe to dash and no movement

    Hello. We have a cat it28f loader. Loader was moving fine then all of a sudden the there was not power to the dash and no movement in the transmission. Now the loader starts fine but no power to the dash. I’m assuming the I lost power to the ecm. I’m hoping somebody can give me some hint as...
  19. 4

    2006 Kobelco sk330 ecm and ecu

    Hello. It’s yco7u1313. Thanks for the help.
  20. 4

    2006 Kobelco sk330 ecm and ecu

    There were no messseges on the monitor as it had burnt resisters. Also when we would try and roll it over it would blow the monitor fuse every time.
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