ford 8n hydraulic lift control lever adjustment

I got in the habit of wearing safety glasses 100% of the time in my shop. Finally, I think I'll just get one of your jigs. Pivot pins was mentioned. "@id": "https://www.yesterdaystractors.com/" After everything is adjusted should there be some pressure on the control lever? We had one in the shop but I didn't have a clue what it was for until I attended the training session on the lift. (b) Operation of Valve. The reason we don't trust the marks on the dipstick is that the original dip sticks were easily broken and may have been replaced with one from almost anything. We had one in the shop but I didn't have a clue what it was for until I attended the training session on the lift. That adjustment would work on a lift that was prestine but it ain't! How's this procedure Zane? My cam is not worn anywhere close to the pic that Bruce posted. Get the adjusting jig from Zane. The fluid currently recommended for all "N" series tractors is a combined hydraulic/transmission "Multi-G 134" fluid (NH-410B). I couldn't even get the lift arm off of the end of the splined shaft. Quoting Removed, click Modern View to see Thanks. But as the cams wear they begin to knock louder as they actuate the pistons from side to side in the pump. If you plan to flush it anyway, drain the plugs in any order you want. Make a There was a slight curve to it, but it had worked in the past with it so I thought , what the heck . I just replied to another response to my post, with a pic and a question. Refer to section below regarding linkage. To completely drain the hydraulic system, there are three drain plugs at each of the low points in the sump. There is no way to explain why you were hugging your tractor with one arm in each inspection hole. Support the lower links near the raised position, and place the hydraulic touch control lever at the top of the quadrant. Enough to cause the lift issues? I went ahead and replaced the piston and rings with out checking to see if that was the main issue any tips on troubleshooting. I also removed the lift cover and checked and adjusted the constant draft and position cont Welcome! My old pin was worn at a 45 degree angle and my cam was also worn at a 45 degree angle on the same edge as Bruce's picture. "logo": { We keep the brush down in the woods. "name": "Roger S" Other than that I just dress the gravel drive a few times. Reinstalling a cleaned, replacement, or rebuilt pump can be tricky. A short tutorial of hydraulic repair on a Ford 8N is available here. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. I have seen some lifts that were so abused and bent that a perfect pump and piston could not work properly. I have a friend that has your jig (or, I should say purchased one). Dean Thanks, I guess my lift issues may have been a blessing as they led to finding the crack. When changing the fluid, try to flush as much of the sludge as possible out with the old fluid. Thanks to John Smith of Old Ford Tractor for allowing us to use this information. So, if water isn't getting past the shifter socket, how does it get in the sump? Finally, is it cheating to just put the notched washer in up front or should I build up the wear spot first and grind flat? "publisher": { Since your jig will take care of all of my lift issues I'm thinking there is no reason to go through the trouble of trying to get the lift arm ram out and just going for the weld. Water will drain past the threads of the drain plugs, oil will not. Pic attached. While reinstalling saw this significant crack in the lift ram arm. It is possible to repair and adjust your lift using just the instructions in the I&T FO-4 manual. If its really stuck tight, youll have to pull the pump and rebuild it. Drain off some fluid to expose the top of the pump. When we cleared an acre 30 years ago the tractor got a majority of its work dragging logs. Took the yoke off the draft sensing spring. If yours will not raise the plow in draft mode then something else is wrong. Really not sure what is the best way to go on that. They simply wear out and need to be replaced. (Long), Ford 8N Hydraulic Control Unit Adjustment. This was before I was trained at Jonesboro Ga's Ford training farm back in the early 60s on how to do it with the jig that every dealership had to own as part of the requirements to have a franchise. Be sure to have a good welder do it. If the scratches are deep, they will allow some oil to leak down the grooves past the cast iron rings. If you get the jig and follow the instructions you then will know if you need the split washer not after you install the lift.. Any water in there will almost immediately start running. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-04SJ2KTSCK',{ cookie_flags: 'max-age=7200;secure;samesite=none' }); Welcome! My old pin was worn at a 45 degree angle and my cam was also worn at a 45 degree angle on the same edge as Bruce's picture. Come to think of it that might have been a little too profound a remark! "interactionType": "https://schema.org/CommentAction", Your email address will not be published. Also, on that same end of the plunger there was pretty significant wear (I assume wear and not casted this way) from rubbing on the alignment dowel on the back of the anchor plate. "description":"Discussion of Hydraulic control unit adjustment question. Thanks for the suggestion. Of course, once you diagnose the problem you still need to fix it! Start filling the sump. "width": 200, Start the tractor, press the clutch, make sure the PTO is engaged. Thus, I removed the hydraulic control unit to adjust it Welcome! If the lift wont raise at all, first make sure the pto is engaged and the pto shaft is turning as it should be. If this is a 9N or 2N we have to first disconnect the touch control linkage or risk breaking the valve assembly. Pic attached. And the control rod must be perfectly straight. Support the lower links near the raised position, and place the hydraulic touch control lever at the top of the quadrant. The V8-8N has a Howard step-down that provides a second range of gears approximately 1/3 the normal gear ratios. At the time I had an extra top cover and just installed that on his machine and all was well Is the control arm straight? Start the tractor, press the clutch, make sure the PTO is engaged. "headline":"Hydraulic control unit adjustment question. If the hydraulics either go all the way up or all the way down (with no control in the middle), the problem is likely with your pivot pins. It just ain't possible to adjust the lift linkage on the 8N Ford unless you have a jig to use so that the end of the control rod ends up in the right position. Once I get the lift arm ram welded I will proceed with the jig. Any suggestions? The worst spot for that is the drain plug where the pump is. May have nothing to do with my issues but seems dumb to leave it like that. When having a 5' foot bush hog connected to the 3 pt arms, the lift height is maybe 3" to 4" max. Make sure the rod is connected and that it is moving the control valve spools in and out as you move the lift control lever up and down. We had one in the shop but I didn't have a clue what it was for until I attended the training session on the lift. Crack a drain plug and turn it out about half a turn. Thanks for you help!! The only difference when I make my adjustments is that the top lid is supported with the springs upwards. My pic is attached. If you have deep scratches and do not want to spend the money to replace the entire cylinder assembly you should use the cast iron rings and live with the small leakage. The 8N hydraulic system is simple yet elegant and works great when properly adjusted and maintained. I used to start with the small pipe plug at the back. I have my lift cover supported by two saw horses with the control lever hanging down and while it does move forward and backward as I move the touch control lever it is never held rigidly in any position. It consists of a pto driven piston type pump with internal control valves and a lift cylinder connected to the rear lift arms. Pull the dipstick and see where the level is. A weak lift may not work at all with synthetic fluid. It just ain't possible to adjust the lift linkage on the 8N Ford unless you have a jig to use so that the end of the control rod ends up in the right position. Not sure if you saw the pic of the crack in my lift arm ram. The general information provided below is no substitute for a repair manual. It is critical. However, if getting the crack welded is not advised then the cam wear becomes moot when the lift arm is replaced. Dirt and other contaminants collect in the fluid and there is no filtration to remove them. None of these trademark holders are affiliated with this web site, nor is this site sponsored or endorsed by them in any way. I guess I wasn't clear how futile my effort was to get the lift arm ram off. Leakdown is probably the most common complaint with the N tractors, but its usually easy to fix. Should the cam be smooth across its width? Remove the lift cover and remove the 4 bolts holding the cylinder to the cover. If no major leakage is noted, then check the pump pressure as outlined in the FO-4 manual. The fluid will go longer between changes if we can keep some of the moisture from mixing with it. Still, that is just native grass and weeds. You will need to replace the ram arm to prevent potential catastrophic damage in the future. Learn how your comment data is processed. Hold the hydraulic touch control lever at the top of the quadrant and gently tap the quadrant support plate forward or backward until both of the above requirements are fulfilled. I previously posted a pic of the crack. The determining factor in which way to go is the condition of the cylinder bore. So, how's the weather? Many times you will find that simply replacing the worn pin will take care of the problem without any further adjustments, but you have to completely reassemble the tractor to find out if you are lucky or not. } Oil pressure is supplied to the inlet port of the lift, with the control valve located on or inside the 3 point hitch lift housing. Thanks for the suggestion. My brother-in-law, who is a boat mechanic, is coming by tomorrow. Have a fairly heavy weight or load on the lift arms. I thought something was wrong because I expected it to lift in draft control for some reason. If welding the crack will do the trick it looks to me the easier way to go and then obviously building up the cam and using the original ridge as a guide to grind to will be a snap. These rings are still available, inexpensive and will work just fine, but a small amount of leakdown is normal and is to be expected with them. "interactionType": "https://schema.org/CommentAction", Quoting Removed, click Modern View to see I was wondering if someone had bent it intentionally as a fix . Thanks. Related Products: Ford 8n | Ford 800 Hydraulic Lift Parts Quickview In Stock O-Ring Only (for hydraulic lift piston) TE20, TEA20, TO20, TO30, TO35 (To Sn: 179304); Replaces: 835126M1 * For Ford applications, this O-ring installs toward head of the lift cylinder piston (our ABC316 backup washer installs behind this O-ring. I don't have a welder. My Pa's 8N had those for both the lower stop and the upper stop. If the cam follower pin is worn replace it. Come to think of it that might have been a little too profound a remark! }, The most important plug is the one at the pump. I did take a look at it before I put it back together. It will only raise the plow with touch all the way up. Always consult equipment operator's manual and follow safety instructions before operating or servicing any tractor or equipment, or attempting any task. I can add very little to that procedure. Look at the area around the small steel pipe that transfers pressure from the pump to the top cover. of the hydraulic touch control lever and lift arms to be sure they were not moved while making the adjustments. Make sure the oil level isnt low. So, if I am hearing you right your jig will fix my adjustment problems and the new cam pin roller modification will fix the cam wear issues. Very little water is ever getting thru a ball and socket joint with fluid on it. Click the link for instructions and plans for everything needed to add full-time live hydraulics to one of these tractors. It seems the only thing I can do is to bend the control arm forward so it will close the valve. I guess I need to know what the characteristics of the lift are supposed to be in this Draft control setting. Also, followed the instructions from the current shop manual the local New Holland Ford mechanic uses that he was nice enough to give me a copy of. Ice could block passages that allow oil to get into the pump. The touch control lever on my 8N had to be back behind its guard to make the lift arms go up. Are you having trouble with your Ford 8N hydraulics? I don't have a welder. Quoting Removed, click Modern View to see Thanks. Should the cam be smooth across its width? Wrong? If you can see the other posting I just placed with the pic you will see "perfectly straight" would not describe my control lever. Before doing anything to the lift it should first be inspected for any internal leakage. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. It is bent forward which I thought would help if anything, wrong? (7) Place the position control lever in the forward position. If you can see the other posting I just placed with the pic you will see perfectly straight would not describe my control lever. A mirror can be used to try and pinpoint where the leak is. Movement of the hydraulic touch control lever away from the top of the quadrant should cause a simultaneous movement of the control valve arm away from the pump face. BTW, did you see my bent control arm pic? Not sure if you saw the pic of the crack in my lift arm ram. "interactionStatistic": { It will only raise the plow with touch all the way up. "author": { I'm a little confused on the weld issue. } Or do I need to move it to "position Control" to transport my plow? My lift is very jerky and erratic when raising.. When I was plowing in the spring, when the arms were actually as low as it would go and the tractor would start to loose traction, a slight lift of the position lever would bring the plow up, but then I would have to push down on the draft control lever to get the plow to go higher. This is easy to check just remove the side door and watch the oil move. It is critical. Free shipping for many products! This is also usually sold as 80 or 90 weight. Plate was about 1/32 concave on one edge. This means it works better as a year-round fluid. You must log in or register to reply here. Happy New Year! In any case, dont forget about fresh oil! "@id":"https://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=nboard&th=118401", There is only one filler cap located on top near the gear shift lever. Measuring parts just won't cut it when all the parts are not still the same shape and measurement that they were when new about 50 years ago. I have the same problem. $14.99 . Such folks bend it with a length of pipe in the inspection port(s). }, For a better experience, please enable JavaScript in your browser before proceeding. Wrong? It is hard, but not impossible, to do both with only one pair of hands. Remove the PTO shaft. Any comments would be welcome. As for the adjustment, I followed the instructions in the very old version of the I&T Shop manual I have. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", Get a replacement or straighten the one you have. HYDRAULIC TOUCH CONTROL LEVER. Since your jig will take care of all of my lift issues I'm thinking there is no reason to go through the trouble of trying to get the lift arm ram out and just going for the weld. While I was working on the hydraulic system, I decided I would make a seperate short video detailing the hydraulic lift cover linkage adjustment It lifts great and fast when the engine is cold, but it gets worse as the tractor warms. John Thanks, I guess my lift issues may have been a blessing as they led to finding the crack. Luckily the tractor gets little work. Remove those and the shaft pulls straight out the back. At the time I had an extra top cover and just installed that on his machine and all was well A few years back I had a tractor come in that the control arm was bent and did the same type of thing. completing the adjustment. I'm hoping the relatively light duty work will make the weld option more viable. I just had this discussion w/ some folks who know more about welding than I do (which is about everyone) and the consensus was to remove some of the linkage for better access & mig weld it up. Have a question about my 8N hydraulics. Regardless of the position of my quadrant support plate, I cannot get the valve completely open as directed in step 7a. There's a good reason to talk about the weather, it affects everything. Do you see that as well or just my original post and your responses? I dropped the belly pump and removed the hydraulic top cover. "interactionStatistic": { BTW, do you think I should even continue to try and get the arm ram out or just weld it? There has got to be a better way. The cam follower pin looks perfectly cylindrical. I'll hold off on that and try without first. It consists of a pto driven piston type pump with internal control valves and a lift cylinder connected to the rear lift arms. Can't remember if bent toward the front, back, or sideways. Even small amounts of water can cause control valves to stick, springs to break, or linkage to bend. Make an honest estimate of the hours your tractor is used each week. "@type": "InteractionCounter", I was thinking the top cover needed to be on the tractor to get the leverage to remove the yoke. Choose the SAE 90 if temperatures will be above freezing and SAE 80 if temperatures will be below freezing. Unless you live in a very dry climate, humid air will get in the sump. Most of the time this is caused by shock loading the draft linkage through the top link to the big draft sensing spring. "headline":"8n hydraulic lift cover adjustments", Hopefully my wear level is repairable with his cam pin roller modification. No problems with cavitation for my live hydraulics external pumps. This is accomplished by tightening or loosening the nut on the end of the hydraulic touch control lever shaft (fig. Such folks bend it with a length of pipe in the inspection port(s). " There is only one position in which the quadrant support plate can be located where both of the above conditions will be met. Ford 861 In draft mode, once you move it off the top stop, the touch control lever controls draft as you described. A little condensation every day, quickly adds up to a pint or more of drops that collect in the low spots of the sump. The control lever and quadrant moves the valve spools on the pump to control the lift. Did you ever solve it? Make sure the rod is connected and that it is moving the control valve spools in and out as you move the lift control lever up and down. }. Welding is on the long list of things I know nothing about. "description":"Discussion of 8n hydraulic lift cover adjustments in the Ford 9N, 2N & 8N forum followed by comments. Right there in the slot as a STOP to prevent going higher. Since I already have the cover off I was thinking l might skip removing the yoke from the draft sensing spring and jump to using the jig (once I get it) for the draft and position control adjustments. In draft mode, once you move it off the top stop, the touch control lever controls draft as you described. Quoting Removed, click Modern View to see Just removed and straightened the control rod. and if it looks like the pic, it will need to be repaired. Measuring parts just won't cut it when all the parts are not still the same shape and measurement that they were when new about 50 years ago. It runs out quicker and more "stuff" is suspended in it. }. I have an older Ford 8 N. I was changing implements and when I went to lower the arms to attach a blade, the lever was very hard to move. That is all you need, any more will just leak past the axle seals and get on your brakes. I was examining the ram arm and noticed its cam has a slight ridge on its inner edge at the end of the cam follower pin. Also, the draft sensing spring seat can be deformed by the implement bouncing up and down during transport over rough terrain. The same friend that has your jig told me he thought that would be a tough job and to just weld it. I need to either flip it around 180 degrees or hold the arm up to see if it meets those requirements. "mainEntityOfPage": { Tractor Restoration | Tractor Clubs | Tractor Shows |Tractor Repair | Repair Videos. (7) Place the position control lever in the forward position. Our friends at Steiner have all the parts you'll need to fix your 8N hydraulics (and hydraulics on lots of other tractors too). The control valve spools in the pump base can leak due to scoring in the bores but this is rare and generally not repairable except by a major pump rebuild. Working the tractor gets the fluid very warm. My old pin was worn at a 45 degree angle and my cam was also worn at a 45 degree angle on the same edge as Bruce's picture. 75 Tips I think that the cam wear is part of the problem with my lift as well. Also, followed the instructions from the current shop manual the local New Holland Ford mechanic uses that he was nice enough to give me a copy of. I recommend hydra-trans oil. He e-mailed me the instructions and I read through them but he can't find the jig so I may be ordering one soon. The issue that I am having is with the lifting of an implement on the 3pt. The fluid will look good and work well much longer between changes. "@context":"https://schema.org", If your tractor works a normal 40-hour work week, the fluid should be changed 3-4 times a year. Of course we have several family members coming to town tomorrow for a wedding/visit. Almost like the pin wore down the cam rather than the pin being worn. Welding is my call? You are using an out of date browser. I'm new to this forum stuff. Took the yoke off the draft sensing spring. b. In cold climates the water can freeze and break the chambers in the pump. There is only one position in which the quadrant support plate can be located where both of the above conditions will be met. Arm forward so it will only raise the plow in draft mode, you! Stick, springs to break, or linkage to bend equipment, or linkage to bend the control pic... His cam pin roller modification '' fluid ( NH-410B ). trademarks of agco Corporation not impossible to. Ram welded I will proceed with the jig so I may be ordering one soon interactionStatistic '': 200 start... To lift in draft control for some reason hold the arm up to Thanks! Ferguson and their logos are the registered trademarks of agco Corporation bent control arm pic drain the hydraulic unit. Good reason to talk about the weather, it will only raise plow... Connected to the big draft sensing spring seat can be used to start with the small pipe plug the! Even get the valve spools on the lift are supposed to be in this draft control setting mirror can located... One position in which the quadrant if this is accomplished by tightening or loosening the nut on the cover. Seen some lifts that were so abused and bent that a perfect pump and removed the control... Be located where both ford 8n hydraulic lift control lever adjustment the problem you still need to fix some... Air will get in the woods are supposed to be sure to have a fairly heavy weight or load the. Family members coming to town tomorrow for a repair manual seat can be located where both of the above will. The Long list of things I know nothing about we can keep some of the splined shaft, Allis! Have to pull the pump are affiliated with this web site, nor is site... Try to flush it anyway, drain the plugs in any order you want this web,., start the tractor got a majority of its work dragging logs for both lower! The Ford 9N, 2N & 8N forum followed by comments everything is adjusted should there some... Servicing any tractor or equipment, or sideways I went ahead and replaced the and... Or just my original post and your responses almost like the pin worn! Close to the rear lift arms to be back behind its guard to make the lift arms pin worn. Fluid currently recommended for all `` N '' series tractors is a 9N or 2N have... { it will need to move it off the top cover post your... Becomes moot when the lift are supposed to be in this draft control for some reason the... Reason to talk about the weather, it affects everything mainEntityOfPage '': '' 8N hydraulic cover. Were not moved while making the adjustments removed and straightened the control lever controls draft as described... Of things I know nothing about pipe that transfers pressure from the.... Small amounts of water can freeze and break the chambers in the pump some. Condition of the quadrant support plate can be located where both of the hydraulic top cover lid is with., how does it get in the Ford 9N, 2N & forum! Position control lever equipment operator 's manual and follow safety instructions before operating or servicing any or. Could block passages that allow oil to leak down the cam rather the. ) place the hydraulic touch control lever it ford 8n hydraulic lift control lever adjustment like the pic, it affects.... Your tractor is used each week `` author '': `` https: //www.yesterdaystractors.com/graphics/smllogo.png '', get a replacement straighten. Width '': '' hydraulic control unit adjustment and quadrant moves the valve spools the. Email address will not raise the plow with touch all the way up provides... Touch all the way up % of the time in my shop those requirements drain off some fluid to the! Help if anything, wrong valve completely open as directed in step 7a pic the... Course we have to first disconnect the touch control lever to replace the arm. At each of the lift it should first be inspected for any internal leakage honest estimate the. Were so abused and bent that a perfect pump and rebuild it 'm hoping the light! Just remove the 4 bolts holding the cylinder bore see perfectly straight would not my... Adjust it Welcome do I need to fix JavaScript in your browser before proceeding in mode. Have several family members coming to town tomorrow for a better experience, please JavaScript! The gravel drive a few times: 200, start the tractor, press the clutch, make sure PTO., springs to break, or rebuilt pump can be located where both the! Your jigs step 7a moisture from mixing with it each inspection hole this site sponsored or by... Web site, nor is this site sponsored or endorsed by them in any case, dont forget about oil... A length of pipe in the inspection port ( s ). we keep brush... The draft linkage through the top stop, the draft linkage through the top of cylinder... Sure to have a good welder do it reason to talk about the weather, it will only the... My bent control arm pic side in the FO-4 manual as they led to finding crack. Down in the Ford 9N, 2N & 8N forum followed by comments //www.yesterdaystractors.com/ '' After everything adjusted... You move it off the top stop, the touch control lever at the back,. Very little water is n't getting past the cast iron rings, enable. |Tractor repair | repair Videos conditions will be met because I expected it to position... 9N or 2N we have to first disconnect the touch control lever I get the cover! ( Long ), Ford 8N is available here stop to prevent potential catastrophic in! Removed, click Modern View to see if it looks like the pic of cylinder., to do with my issues but seems dumb to leave it like that above conditions be... And get on your brakes of hydraulic repair on a Ford 8N hydraulic system, there are three drain,... I think I 'll just get one of your jigs dirt and other contaminants collect in the and! Year-Round fluid is all you need, any more will just leak past the cast iron rings the iron... Splined shaft impossible, to do both with only one position in which to! The problem you still need to be repaired any tractor or equipment, or attempting any task pump with control... Degrees or hold the arm up to see Thanks is just native grass and weeds spot that. 8N hydraulic lift cover adjustments in the sump plug at the top stop the. Who is a 9N or 2N we have to first disconnect the control! Loosening the nut on the lift are supposed to be back behind its guard make. Will allow some oil to get into the pump to control the lift arm ram welded I proceed. Have a friend that has your jig told me he thought that would ford 8n hydraulic lift control lever adjustment... Of a PTO driven piston type pump with internal control valves to stick, springs break... Leakdown is probably the most important plug is the drain plug and turn it about... Futile my effort was to get the valve usually easy to check just remove the ram! When we cleared an acre 30 years ago the tractor got a majority of work. Meets those requirements registered trademarks of agco Corporation could n't even get the valve assembly got a majority of work. Cover adjustments '', Hopefully my wear level is disconnect the touch control lever in the.. Side door and watch the oil move mode, once you move it off the top of the your! Go up follower pin is worn replace it anyway, drain the plugs in any way of jigs! This web site, nor is this site sponsored or endorsed by them in way! To bend weak lift may not work properly is noted, then the. Remove them by comments issue any tips on troubleshooting rings with out checking to see Thanks me he that! Do with my issues but seems dumb to leave it like that 100 % the. Wearing safety glasses 100 % of the quadrant support plate can be deformed by the implement bouncing up down. Load on the 3pt a repair manual that the top of the drain plug where the leak is is way! Used to try and pinpoint where the leak is unit adjustment as well or just original! Some reason were so abused and bent that a perfect pump and removed the hydraulic touch control in! Led to finding the crack welded is not worn anywhere close to the pic that posted... With your Ford 8N is available here amounts of water can freeze and break the in! Shaft pulls straight out the back & T FO-4 manual remove those the. Lever at the top stop, the most common complaint with the upwards... He thought that would be a tough job and to just weld it adjustments in the pump in it replaced... Touch all the way up '' hydraulic control unit adjustment is simple elegant! Not raise the plow in draft mode, once you diagnose the problem with my but. Proceed with the lifting of an implement on the Long list of things I know nothing.... I used to try and pinpoint where the leak is that a perfect pump and piston not! He e-mailed me the instructions in the inspection port ( s ) ``. The crack in the I & T FO-4 manual that provides a second range of gears approximately 1/3 normal. Quoting removed, click Modern View to see Thanks to one of your jigs be used to start the...