Question about Ingersoll Rand Ingersoll-Rand IR 315 Heavy Duty Air Twin Piston Inline Sander

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My 315 straight line sander slows down even with correct and clean air. I think dust is getting in caking up theoiled parts

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Posted on Jan 02, 2017

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SOURCE: WHAT OIL IS RECOMENDED FOR IR315 STRAIGHT LINE AIR

I just use my regular air tool oil on mine, have several of these IR longboards. Rick

Posted on Apr 15, 2009

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How to assemble an ingersoll rand sander 315


Gear timming in line sander

The above link may help as the unit is similar to the Central Pneumatic Straight Line Sander

Mar 02, 2015 | Ingersoll Rand Ingersoll-Rand IR 315 Heavy...

1 Answer

Gear timming in line sander


The Matco is very similar to the IR-315 straight line sander as well as the Central Pneumatic Straight Line Sander sold by Harbor Freight-shown here: The Central Pneumatic became the focus of my attention when I realized it was not timed properly after re-assembly!
gear-timming-in-line-sander-ouwmaoiy3rgyhljowtwgziyj-2-0.jpg Assuming you are having the same problem,(1) I recommend mounting the body upside down in a small vise as shown here:

gear-timming-in-line-sander-ouwmaoiy3rgyhljowtwgziyj-2-2.jpg(2)Rotate both piston gears full forward (to the left in this photo). (3)Then carefully rotate each toward the back end precisely three teeth (to the right in this photo). It is important to note: Begin counting to the precise 3rd tooth once the first tooth is near top center in step (2). Thus, if after rotating the gears forward until they stop, you ideally want a tooth visible right at the top center. If the tooth is not at top center, move the gear(s) slightly toward the back until the very first tooth is now centered up: then begin counting to the 3rd tooth. If after rotating the gears forward until they stop, a tooth is NEARLY at top center: use it as your starting point and count to the third tooth (step 3). I recommend wiping the oil/ grease off of these two centered teeth and coating them with red majic marker.
(4) Reference next picture: Hover cursor near rotary air valve gear. The dotted gear lobe should be a 1 oclock, assuming 12 oclock is in line with the center of the body toward the knob end of unit. Note the piston gears are marked for the centered 3rd tooth. Note the two teeth on each side of the center valley(s) of the rail gears are highlighted as well.
gear-timming-in-line-sander-ouwmaoiy3rgyhljowtwgziyj-2-5.jpg (5) I recommend marking the valley after the tooth that follows the dotted tooth and verifying its position is at 3 oclock. Notice in the background that the center tooth is highligted (it is the fifth tooth from either end of that straight gear on the rack).Also reference the second photo after step (6):


(6) visually confirm all teeth are in perfect alignment for placing the rack upon the unit:

gear-timming-in-line-sander-ouwmaoiy3rgyhljowtwgziyj-2-9.jpg
gear-timming-in-line-sander-ouwmaoiy3rgyhljowtwgziyj-2-14.jpg (7) Simply place the rack onto the unit's body making sure all your marks are centered up. If correctly lined up, you will incur no resistance or offsetting. If rack does not simply "lie onto the gears", lift back off and re-check the alignment of each of the teeth and valleys. A slight movement of one of the piston gears is usually the cure.
(8) re-attach the rack retainer bars with at least 2 screws on each side before moving the unit.

(9) you should visually be able to see about 1-1/2" of rack movement from the unit by pushing the rack to its limits. A centered rack measures approx. 15/16" on both ends of unit to the center of the bolt in the rack.

Sep 30, 2012 | Heavy Duty Air Twin Piston Inline Sander

1 Answer

Hello I have a compressor and my electric orbital sander has finally gone legs up. My question is if I get an air sander primarily for sanding wood is a straight line the best sort to get or are the...


I work in a wood working shop and we use orbitals on everything. You still will still sand with nice even strokes with the grain. It leaves a great finish. They are nice, light, and easy to use! They do use a lot of air though, so make sure your air compressor can handle the one you buy. If you compressor is constantly running you might have to take breaks so you do not burn it up. enjoy!

Apr 11, 2011 | Sander Viking Air Tools Dual Piston...

1 Answer

Sander seems to struggle, doesn't run as fast as it used to. Air supply hasn't changed. Also, where can you buy parts if necessary?


I am not sure of a parts source, but you should consider putting some air tool oil and try to lubricate the air motor. It might be the problem ...a few drops in the air connection

Nov 19, 2009 | Hutchins HTN - 2000 Air Straight Line...

1 Answer

I have a porter cable belt sander that shoots dust out the front. It has a dust bag but the wood dust doesn't go in the bag. it used to. I have taped up some weak parts of the bag but I am not sure what...


the inside of the tool is full of dust not allowing it to get into the bag. I have had to completely disassemble and clean the track for the dust. You can try blowing thru every port with compressed air and see if that helps.

Nov 09, 2009 | Porter Cable 3" x 21" Electronic Variable...

1 Answer

DA SANDER RPMS SLOWED


get some air tool oil and oil it lol, if that will not speed it back up you may have to take it apart and clean it but the oil should do the trick. Do NOT use wd40, etc. use air tool oil

May 23, 2009 | Chicago Pneumatic 864 6" Heavy Duty Dual...

1 Answer

Sander stops


There can be a few problems. First is your air supply the right pressure and volume for the sander. Check that at the quick connector to the sander itself. Second, if it is cold and moisture is high, ice can get into the sander which will slow it way down. Third, and probably most likely cause, is the sander well oiled and the parts inside clean. Fourth, mechanical issues: the drive motor may be well worn out inside, the bearing that the main shaft for the sander may be worn out & so forth. Hope this helps you, Rick

Apr 28, 2009 | Air Tools & Compressors

2 Answers

Air Sander Guide


# Ensure that sanding belts are not too tight or too loose. Never operate a sanding disk if the paper is loose. # Use the correct grade of abrasive material for the job. # Ensure that the distance between a circular sander and the edge of the table is not greater than 1/4 inch. # Do not push materials against sanders with excessive force. # Sand only on the downstroke side of a disk sander. # Do not hold small pieces by hand. Use a jig for pieces that are difficult to hold securely

Aug 27, 2008 | Rotary Viking High Speed Tools: Sanders -...

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