Oil Pressure Sender

[flyfisher]

Neophyte here with a question..

I'm looking at my oil pressure sender (which is bad) and am wondering how I get at this thing. Do the fan and assembly need to be removed, or am I simply missing a 'nice to have' tool for this task?? thanks

[yelcab1]

Nah,

The fan and housing don't come out for that. But life is easier if the air conditioning compressor was not in the way. You may have to also loosen the cam oil line.

[pwd72s]

And you probably will need a crowfoot wrench. Not sure of the size on the '87, but on a '72, it took a 17mm...

[danielt]

17mm on an 81 too... so it should be right for yours as well.

[Jim Sims]

Remove the block it is mounted in, mount the block in a vise then remove the sender. Sometimes the force required to loosen the sender will cause the threaded port in the engine case to become damaged ($$$) if you attempt to remove the sender from the block while it's on the engine. Cheers, Jim

[FA-18C]

Hey Mike, like we spoke about, try the connector first! You may not have to replace it...if you do Jim is spot on, pull the whole thing from the block, then seperate.

[masraum]

My '88 took a Craftsman crowsfoot, I think it was a 15/16 which is .0125" off of the equivalent metric size. it was much cheaper than finding the appropriate metric tool and fit like a glove since it is actually that much undersized which makes up for the tolerance from manufacturing.

[flyfisher]

Many thanks to all

[Jim Sims]

Removing the A/C compressor and a portion of the bracket makes this job much easier. Do not disconnect the A/C refrigerant lines; instead loosen the A/C belt and dismount the compressor and shift it out of the way (lines still attached). Some pad the right rear fender and rest the compressor there. Then remove the portion of the bracket the A/C compressor was mounted on. Then you will see something like the attached image (from a '73T with oil fed tensioner upgrade). In the attached image the block doesn't have the oil pressure sender screwed into it yet. To remove the block first loosen the nut on the oil line to the right (passenger side of the block) and disconnect the oil line. The block is secured to the engine case with a hollow bolt that goes all the way through the block. Use a wrench on the block to react the torque and apply a wrench to the hex on the hollow bolt fitting to loosen. Unscrew the hollow bolt and then it and the block will release from the case. Cheers, Jim

[UTKarmann_Ghia]

I was able to get to mine without moving anything. It's just a little tricky and tougher to line up the threads to get it back in. Gotta have little wienie fingers, not sausages

[rburn]

UTKarmann_Ghia... what tool did you use? I see a wrench will not work if AC brackets get in the way.... I think the Craftsman crowsfoot should
work... Masraum did you just go straight from the top with this tool? does it have enough offset for the extension to the crowsfoot to clear the sender unit

I have an 84 with AC and AC covers area and there's a single piece of metal part of the AC bracket that stops a wrench on the engine side when trying to loosen it. it's a 24mm or 15/16 will fit.

[rburn]

I also used the crowfoot.. 15/16" but I had to modify
the crowfoot to tighten new unit... I cut about 3/16 of
an inch off one of the ears on the tool... you could actually
cut both sides off - as it still completely covers the entire
sending unit just fine... I had to do this as my AC unit bracket
was in the way and I needed just a hair more room as my
threads must have been slightly different than mas..

You should note that craftsman works well.. a cheapo might
work but verify that it is not too thick.. the craftsman sqeaks by
when you have the crush gasket on you have about 1 mm clear.

I Torqued to 26 ft-lb and wha-laa


Enjoy!

[tbitz]

I know this is an old thread, but I needed to replace my Oil Pressure Sender and did a quick search on the forum.

I followed Jim Sims instructions above and removed the block as he descibed. Worked like a charm.

Thanks Jim.

Cheers,

Tony