Akintunde Akinrogunde writes:
Very recently, one of the equipment that is under my jurisdiction developed an usual problem with the machine movement. The dump truck, 773e model, could not move beyond first speed forward except on slope/downgrade. I have made all machine codes inactive with the electronic technician and based experience. Equally, all inputs to the transmission ecm were confirmed okay. All pressures, particularly, input/output to torque converter were confirmed. The locked up solenoid activated as expected, but the shift to next speed did not take place. The body up/down switch was equally confirmed normal as by-pass was considered and experienced. Because of the problem nature and particularly the first set up of equipment model, I decided to throw this problem open to colleagues, particularly those with OEM, To brainstorm and possibly come out with locally available solutions. Once again, the nature of the problem is unique as the machine could not go beyond 1st speed. Thank you and happy moment.
Engr. Akinrogunde
locked up Transmission
