Cat Lift Trucks (& Caterpillar) V300B:
electrical

Need an electrical schematic for the charging circuit of this machine.
Thanks
  • Posted 14 May 2015 04:07
  • Discussion started by buckshot
  • Texas, United States
Showing items 1 - 4 of 4 results.
On this same lift, we are having eratic or hard steering. Replaced the steering gear which is the valve under the steering column. Also had the steering cylinder rebuilt. What should be the pressure at the steering gear?
Thanks
  • Posted 4 Jun 2015 07:03
  • Reply by buckshot
  • Texas, United States
i've looked through all the V300B material i have on this and it does not show a voltmeter/amp guage in any of the diagrams or harness schematics. Which makes me wonder if someone added this guage at some point. The only additional guages it shows are for air pressure or oil pressure.
But generally with voltmeters there are usually only 2 wires that connect to it so it can measure voltage in the system off the ignition circuit. If it is setup to be used as an amp guage then the wires would be large guage like 10 or 12 but still would only be 2 wires.

This lone wire u say pegs out the meter when you connect it could be anything but obviously does not belong connected to that guage if it pegs the guage when it is connected, that is just shorting out the guage circuit when it's connected and will burn out the guage if you do that for too long. So dont do it :o)

I'll keep looking but so far on this age of truck my resources are limited, this was before cat was very proficient in making their material available on electronic format, most of what you will find would be in a paperback manual if you can find one ;o)
  • Posted 14 May 2015 22:12
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Actually, we are trying to figure out the wiring to the voltmeter. There are two wires attached to it now & it is inoperable. There is also a wire hanging below the gauge that looks as it may have been on there too, but no terminal for it. there is a terminal that looks as though it may have contained the loose wire but when the wire is attached to it, the gauge just pegs the needle.
  • Posted 14 May 2015 21:24
  • Reply by buckshot
  • Texas, United States
what sort of problem are you having?
not charging?
first check the output at the alternator output terminal in the back of the alternator

there is also a couple of breakers at the dash console area under a cover or mounted under the dash that could be bad.
look on the right hand side of the seat pedistal and see if there is a cover... may be a relay and fuse control panel there.
  • Posted 14 May 2015 15:31
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.

Upcoming industry events …
May 09-11, 2025 - Bangalore, India
October 21-23, 2025 - Panama City, Panama
July 15-17, 2025 - Hong Kong, Hong Kong
Fact of the week
On average, people read 10-30% slower from a screen than from paper.
Toyota 8FD45
Yokohama, Japan
Used - Sale
Hitachi HX64B2
Yokohama, Japan
Used - Sale
Upcoming in the editorial calendar
Global Industry News
edition #1228 - 1 May 2025
There is simply no ignoring the push for a greener, more sustainable materials handling equipment industry as manufacturers and customers alike seek eco-friendly solutions to reduce or eliminate carbon emissions... Continue reading
Upcoming in the editorial calendar