Hydraulic Test Kit

[alldodge]

My D3 dozer has some steering issues and need to find a hydraulic test kit which will work. I have two fittings which are STOR Boss fittings (7/16-20 and 9/16-18). Some of the kits found are 9000 psi others 8K psi. Currently have gauges for 400 and 2000 and the D3 does not use that high of pressures.

Pulled one of the fittings and thought about drill and tap for 1/8 NPT but after measuring, figure this would be a no-go due to how much side wall would be left once tapped.

Found kits from under 100 (china) to over $2K. Like good tools but cannot justify spending 2K for this job. Good thing with the kit is it will have quick connect for gauge

Anyone have any suggestions on kits?

 

[dolluper]

Not sure your steering issue have you done the adjustments right. Clutches in good shape here's 2 different adjustment guides on this link.
https://www.justanswer.com/heavy-equipment/3b21x-caterpillar-d3-dozer-adjust-steering-brakes.html

 

[alldodge]

I have the service manual, and they are adjusted correctly. Just picked up a test kit and maybe sometime next week I can get some readings

 

[dolluper]

Haven't worked on one of those for 20 years you got the wheels spinning good luck

 

[alldodge]

Just an quick update
Connected the gauges and pressures in the tranny were spot on, so after many other test such as bury blade in the dirt under full power, figured it was the steering clutches that are slipping

 

[Scott Danforth]

7/16-20 is SAE -4
9/16-18 is SAE -6

I think I still have a bunch of gauges with stauff quick connects that are missing the glycerin as the plug popped off in this dang heat a few years ago. yours if you want them

 

[alldodge]

7/16-20 is SAE -4
9/16-18 is SAE -6

I think I still have a bunch of gauges with stauff quick connects that are missing the glycerin as the plug popped off in this dang heat a few years ago. yours if you want them

Be glad to have them will send PM

 

[Scott Danforth]

replied. only have the 200 psi left. what other pressures do you need.

what size/type of fittings do you need?