we service a fleet of approx 300 8400's of varying years all double jacks with no assigned operators. they are 8,000 lb trucks in good condition used in a mixed environment food warehouse (dry, cooler & freezer)
out of this fleet we have about 25 of them that blow the main power fuse & throw the code E107.
To date we have tried swapping batteries, drive motors, contactors, controllers, & lift pump assy's! We have also swapped drive tires & tried different caster wheel adjustments, along with changing the pallet entry rollers & adjusting the minimum lowered height of the forks.
Nothing has made any difference!! Any thoughts??
Showing items 1 - 5 of 5 results.
thanks for the replies. The factory firmware is the latest & greatest. the contact tips will certainly get a closer look too. Batteries have been an issue (true almost everywhere) They have an in house maint man who waters & checks the batteries. they use the opportunity chargers.
I locked one of the problem trucks to a charger & made sure it got a full equalization charge & it is much better now. I check the batteries myself when we work on them & the specific gravity, volts per cell & amps are typically in the correct range. That being said they are 4 year old batteries & will likely start failing soon.
It just seems odd that with the same trucks & around the same amount of hours (approx 5,000) on all of them that the trouble would limited to just these few.
I will post again after a follow up in 2 weeks
Thanks.
Dirty contacter tips are #1 cause. You can just replace tips only. VM is very fussy about any voltage drop across them. Driver's pushing 2 or more skids are prone to blowing Main fuse. Best to do a voltage drop across fuse as it does degrade and get weak and may cause code. Weak battery is another culprit, along with poorly soldered battery connections.
i believe there has been a number of software updates since this truck's inception. might be a good idea to have the latest versions installed.
what amperage fuse is it?
the trucks are all clones. all settings match
drive and bsoc settings all matching?
Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.
If you are having trouble using the Discussion Forums, please contact us for help.