• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Cat engine 3204 oil pressure

D

dd cat 943

Member
Joined
Sep 30, 2019
Messages
11
Location
Boonville, IN
Earlier I made a post about a LED or bulb not working on the operator monitor panel on my cat 943 loader. This loader has the Cat 3204 engine. How can I hook up a manual or electronic oil pressure gauge to this engine. Surely somewhere there is a port or fitting I can tap into. Any suggestions?
 
kshansen

kshansen

Senior Member
Joined
Mar 11, 2012
Messages
11,165
Location
Central New York, USA
Occupation
Retired Mechanic in Stone Quarry
I did a bit of looking and it appears the oil pressure sender/switch is mounted in the side of the cylinder head right off not sure where on the head. But going by the wiring schematic it should have a plug connecting to it that has two wires going into the harness a Black wire with the number 201 on it and a gray wire with 405 printed on it. Hope that give you something to go by.

If you could use a wiring schematic click over to the left on my name and then "Start a Conversation" then give me an email address to send the PDF file to. The one for that machine is not as easy to use as some of the newer ones but not too bad!
 
kshansen

kshansen

Senior Member
Joined
Mar 11, 2012
Messages
11,165
Location
Central New York, USA
Occupation
Retired Mechanic in Stone Quarry
That is one of the problems when people start more than one thread for basically the same problem or same machine, gets difficult to know what has been done or suggested testing!

I was thinking more along the lines that he was just wanting to confirm he had good engine oil pressure to feel safe starting it while doing troubleshooting and not permanently by-passing the warning system.
 
DMiller

DMiller

Senior Member
Joined
Feb 21, 2010
Messages
16,575
Location
Hermann, Missouri
Occupation
Cheap "old" Geezer
Warning systems, Who needs Warning systems!!!
Can state for a fact have seen more engines destroyed as someone did not care to fix warning lamps or unplugged buzzers.
 
W

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
12,538
Location
Canada
Don't know if it's the same but on my 931B with a 3204 the hour meter works off an oil pressure switch mounted on the right side of the block near the back. Would be easy to tap into that to check oil pressure or hook up a gauge. Of all the gauges not to work, the hour meter would have the least consequences. Oil pressure the most.
 
W

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
12,538
Location
Canada
There should be a hook up for an oil pressure gauge on the left side of the engine as well. I just remembered because I replaced the cheap nylon line with a rubber hose when I put a new oil pressure gauge on.
 
You must log in or register to reply here.
Top