Cat 312E slow tracking on one side, (just started)

[Cat 312E]

All sorted guys it was a controller issue at the side of the hydraulic pump 1. Run loose inside see picture! This was keeping the swashplate open!

 

[Cat 312E]

One more quick and easy test.
Put machine in "backup mode", use toggle for throttle up until max rpm.
Now travel without using upstairs function.
Does it travel straight?
If so, the PRV needs adjusted/ calibrated/ repaired.

By placing the machine in backup mode, PRV becomes fixed value (70% of power, IIRC).

We have sorted it mate it was the controller at the side of pump won the swash controller came loose inside and came off the thread.

 

[masterwelder]

All sorted guys it was a controller issue at the side of the hydraulic pump 1. Run loose inside see picture! This was keeping the swashplate open!

I had the same thing happen on a 315CL

 

[Cat 312E]

nightmare to diagnose but well happy with not having to buy new pumps!

 

[Mahadi]

Hello I need hydraulic pump sbs80 piping pdf anyone help

 

[Jones418]

All sorted guys it was a controller issue at the side of the hydraulic pump 1. Run loose inside see picture! This was keeping the swashplate open!

Where is this located at ? Need to check mine to see if it’s done the same thing

 

[masterwelder]

Where is this located at ? Need to check mine to see if it’s done the same thing

On what model and what serial number?

 

[Jones418]

On what model and what serial number?

It’s a 312b not sure where the serial number is located

 

[Jones418]

It’s a 98 312B serial plate is missing, why I couldn’t find it lol

 

[Gary Layton]

My CAT 320C (year 2006) has a SN plate on the cab...but I also discovered the SN stamped into the metal frame, rear area, vertical surface below the cab. I found it when pressure washing it and using a bright flashlight under the machine. Yours might be stamped into the metal frame, too.

 

[Jones418]

My CAT 320C (year 2006) has a SN plate on the cab...but I also discovered the SN stamped into the metal frame, rear area, vertical surface below the cab. I found it when pressure washing it and using a bright flashlight under the machine. Yours might be stamped into the metal frame, too.

Thanks I’ll see if I can find it on mine

 

[heymccall]

Assuming original engine, the engine serial number (on the valve cover) will take us to the chassis serial number.

 

[Johhnycanuck]

Whats your p1 and p2 discharge pressures at high idle, safety lever in the run position, and all functions in neutral?

 

[Jones418]

Assuming original engine, the engine serial number (on the valve cover) will take us to the chassis serial number.

Yeah that’s where I came up with the model of the machine at it’s a 98 but not sure on the serial number

 

[Nige]

Yeah that’s where I came up with the model of the machine at it’s a 98 but not sure on the serial number

So in that case what’s the engine Serial Number.?

 

[Jones418]

So in that case what’s the engine Serial Number.?

Will look to see tomorrow, having issues with booming out and tracking one side it bogs it down and will kill the machine if held down .

 

[Jones418]

So in that case what’s the engine Serial Number.?

Found the serial number 9HR05209

 

[Jones418]

On what model and what serial number?

Found the serial number 9HR05209

 

[Nige]

Found the serial number 9HR05209

Interesting. A grey market machine originally intended for sale only in the Japanese internal market. Were you aware of that.?

 

[Jones418]

Interesting. A grey market machine originally intended for sale only in the Japanese internal market. Were you aware of that.?

Yes I knew that when I purchased it. Just trying to get it up to speed with an English manual. Have a manual with it but it’s Japanese lol