Question about Ingersoll Rand IR 315 Heavy Duty Twin Piston Straight Line Air Sander

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Timing gears straight line sander

Took apart how to set gear timing

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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...

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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

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HOW DO I REPLACE A TIMING BELT ON A 3" X 18" BELT SANDER


On the side of the sander there is a black triangle shaped cover with 3 screws holding it in place. Remove the screws and you will see the drive belt and 2 pullies or gears. The belt will be attached to the gears. Remove and replace the belt. Typically the belt is broken so the only thing you will need is to locate a new belt and slip in over the gears with the side with the teeth facing the gears. This keeps the belt from slipping. Reinstall the cover and you are ready to go back to work. The hardest part may be finding a supplier for the belt.

Aug 06, 2011 | Black & Decker BR300 3''x18'' Belt Sander

1 Answer

Had to replace gear on air board,need to know how to get it back in time


center gear to dots end gears roll all the back towards end of sander and move back 4 teeth

Mar 04, 2011 | Sander Viking Air Tools Dual Piston...

1 Answer

How do you replace timing chain in a1988 chevy s10 with a 2.8 where are marks on gears set do you use #1 top dead center or #4 tdc


Line up the crank gear timing straight up, line up the cam gear timig mark straight down (so the marks are closest to each other, or facing each other). the distributor will be firing #4.

Mar 05, 2010 | 1988 Chevrolet S-10

1 Answer

How to align timing gears on 1987 chev. nova


Seting timeing Bottom gear go straight up top gear sets about 2oclock theres a small hole in the gear too line up with a hole in the head use a small drill bit to check this.

Jan 01, 2010 | 1987 Chevrolet Nova

1 Answer

How do you line up timing chain,gear,and flywheel marks on a polaris predator 500.I lined all 3 gears, and chain according to polaris manual ,cam gears are 9oclock and 12oclock brass links are where they...


try putting both cams down one tooth. i took mine apart and and drew a picture of the cam locations and they did not line up with the manuals picture. so i thought that my pic was wrong so i changed it to what the manual said, and it did what you said just back fired. so thats when i took it back apart to put the cam gears down one tooth so they looked like my picture that i drew. then i put it back togther and she ran great. you just want the left one just below and the righht just above if you see both bottom dots its not right.

Jun 09, 2009 | Polaris ATV

1 Answer

Need to change timing belt on a 1981 chevy chevette/ set timing


bottom gear go straight up top gear sets about 2oclock thers a small hole in the gear too line up with a hole in the head use a small drill bit too check this!!!!

Apr 16, 2009 | 1983 Chevrolet Chevette

1 Answer

My timing belt gears are off sinc


If you have the 2.5L engine here are the pictures of the timing marks.
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Feb 02, 2009 | 1992 Dodge Daytona

1 Answer

Timing marks and procedures


If it is the 2.5 EJ25 motor the marks ar on the cover and pulleys. Top pulleys are Single line straight up and double straight down which should line up with bottom pulleys double marks. This should line up the single lines on bottom pulleys with 90 degree mark on outer cover both sides.The center pulley for crank should be straight up with notch in block.

Jul 23, 2008 | 1998 Subaru Legacy

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