Tips & Tricks: Oil Filling Your Top Mount Pulser

Tips & Tricks:
Oil Filling Your Top Mount Pulser

By Grant Caskey
January 6, 2015

The TMP oil fill process is a straightforward affair, thanks to the Tolteq engineers who designed all of the parts to work seamlessly together, and the writers who did a great job documenting the whole procedure for the TMP Maintenance Manual.

Nevertheless, as I have taught group after group during our Tolteq Technician Certification, I have developed some additional tip and tricks to ensure a smooth oil fill process. Here are six tips, in chronological order, to ensure that your next TMP oil fill is an uneventful one.

Tip 1: Remove parts carefully


As you push out the piston stop, compensating piston, and solenoid assembly (with associated parts), be sure to catch all of the parts with your free hand. Most importantly, don’t let the solenoid spring hit the floor, or you could end up with a bent pin.


Tip 2: Lubricate liberally


After assembling the compensating piston, be sure that you lubricate the exposed o-ring on the compensating piston cap liberally, to prevent it from getting damaged when you slide it into the housing. In the image below, the compensating piston assembly is caught in the aforementioned threads, and must be pushed deeper with an extension.




Tip 3: Reassemble carefully


When inserting the compensating piston assembly into the housing, ensure that you center the assembly as you push straight down past the internal threads. Due to the snug fit, the exposed o-ring can be snagged and/or damaged by the internal threads if you are not careful.


Tip 4: Protect the TMP during the oil fill

Prior to the actual oil fill, ensure that the electronics are not exposed on the TMP. It is a good idea to attach the iSDU housing (barrel) over the electronics, and keep it there for the remainder of the oil fill process.


Tip 5: Monitor your gauges


As you oil fill the TMP, monitor the gauge on the face of the actual TFS oil fill station as well as the gauge that you have attached to the TMP. Ensure that both gauges display similar pressures. A discrepancy may point to a bad vacuum in the TMP. If this is the case, ensure that the internal o-ring is not damaged, then repeat the process.


Tip 6: Use the valve on the oil fill tool


The lever attached to the oil fill tool is there for a reason—use it. After oil filling your TMP, be sure to turn the lever down to the horizontal position. This valve ensures that the excess oil inside the tool stays there, and does not enter the TMP. Inadvertently overfilling your TMP can have undesirable consequences.




Related Articles:

Sensor Calibration:  Everything you Need to Know

Tips & Tricks: High-Siding, Orienting, and Seating your MWD

Continuity Test with SureCircuit [Video]

It’s all in the Plumbing: Rig Pumps, Manifolds and Standpipe

Like what you’ve read?

Subscribe to our company newsletter, The Pulse, to get articles like this sent right to your inbox every month. Just fill out the quick form on our News page.