Oil Sampling Pump

[NSM]

I bought the soil sampling pump kit at the Ranger Rendezvous but am having a heck of a time getting any oil. I presume it's supposed to fit in the dipstick tube but the sampling tube won't go more than a few inches before being blocked. I sliced an angle on the tip of the sampling tube but still no luck. Should I just mash it in or is there something in the dipstick tube that I'll mess up?

I tried using the oil extraction tube to get the sample but the sampling tube never encountered oil when placed as far as it would go in the extraction tube. I ended up using taping a seal between the sampling tube and the extraction tube and using the pump to vacuum out the oil. My arms still hurt.

Assistance is greatly appreciated.

 

[Gin]

A D4? I've had a heck of a hard time getting the tube down for sampling on my D4. I downsized the tube by using 1/4" fuel line. I can get it down the dipstick side on the port side, not the tube for pulling out the oil on starboard. Everytime I sample, I think I'm not going to get the tube into the sump. But there is some little magic twist or push that gets it in, to my surprise each time. I'm hoping someone else has a better technique than I do. I've made it work, but not without frustration.

Gini

 

[S. Todd]

I just got done doing my sampling today on our D-4 320. I put the sampling tube as far down in the oil extraction tube as it would go (it does not want to turn the corner at the bottom and get down into the oil pan) and then sealed the top with a piece of blue painters tape (I use that because it comes off easily). Pump the sampling pump until the little jar is full. For the transmission oil I just put the sampling tube down into the AT Fluid after first removing the filter.

 

[Gin]

I've sampled the transmission fluid when I wasn't changed the filter, as well as when I was. When changing the filter, S. Todd's suggestion works well - just sample through the filter opening. If not changing the filter, the dipstick opening provides easy access too.

Gini

 

[Headlee]

I experience the same challenges mentioned, so I took a different approach. After running the D4 engine for a couple of minutes I turned it off. I then waited about 5 minutes and carefully removed one of the oil filters. I then used a clean turkey baster to dip down into the housing and remove enough oil to fill the sample canister. I then replaced the oil filter and was done. Results back from the NAPA analysis lab were normal.

 

[Automaticman865]

Been doing this for many years. Got one of the multi fuel transfer pumps from Harbor Freight. Its a small red/orange pump with black endcaps. After warming up the CW28 d4-260 I pull the black fitting off the intake of the pump. Now this fits directly on the oil extraction tube built in to the engine. I hold the pump on the hose with the sample bottle on the other end and a few pumps and the bottle is full. No need for any tubes.

Stuart

 

[Gin]

Intriguing suggestion, Stuart. I’ve feared having hot oil from the transfer pump go every which way except into the small sampling bottle. But I may have to give it a try.

Gini