klewall
Member
I have a Komatsu PC40-7 excavator that starts stalling after running for a short while.
When using any hydraulics, the engine will lug almost to a halt and if I stop moving anything, it will usually speed back up again; sometimes it will stall. It doesn't happen every time I use the hydraulics and doesn't happen till the machine has been used for a short while (typically 10-20 minutes) and the machine works well till this starts happening.
I've changed fuel filters, air filter, oil and oil filter. I'd appreciate suggestions for next steps. Thanks.
When using any hydraulics, the engine will lug almost to a halt and if I stop moving anything, it will usually speed back up again; sometimes it will stall. It doesn't happen every time I use the hydraulics and doesn't happen till the machine has been used for a short while (typically 10-20 minutes) and the machine works well till this starts happening.
I've changed fuel filters, air filter, oil and oil filter. I'd appreciate suggestions for next steps. Thanks.