Home > REBUILDING AND MAINTENANCE INSTRUCTIONS

SERVICING YOUR EMF HEIM JOINTS

EMF PRODUCTS ARE GREASED FROM FACTORY- PLEASE GREASE JOINTS AGAIN AFTER FIRST USE AND AFTER EVERY WHEELING TRIP OR EVENT

IS YOUR JOINT LOOSE ON THE VEHICLE?? Back out the set screw on the side and tighten the ring or tie rod end cap using a spanner wrench, then replace the set screw. That is it! Give her some grease and off you go. When it comes time to rebuild the joint down the road, then you just replace the inner races and ball or pin and off you go again.

EMF Heim Joints and Tie Rod Ends always come assembled to ensure that each part fits the way it should fit and it is ready to go when you receive them. You shouldn’t have to take them apart when you first get them, however it is usually a good idea to service your Heim Joints / Tie Rod Ends after every season (or more often if you can) to make sure your Heims/ Tie Rod Ends will last as long as they can and perform as best as they can.

Characteristics of our joint.

The ball will be incredibly stiff when you receive it. This is normal. We over tighten them on initial assembly. This allows for the initial wear. As the joint is first used the ball will seat itself into the race. This changes tolerance by a few thousands of an inch. By over tightening on assembly it allows you to bolt the joint onto your rig and go without worrying about retightening after the first trip. Once the joint sees some use it will loosen up considerably. To the point that the joint will rotate freely at the touch of a finger. At this point the joint is perfect and will see the least amount of wear.(Almost zero friction at this point) When checking the joints for wear watch for up and down play or side to side. Up to .004 of movement is acceptable. It can and will be taken up by the grease you’re about to put in the joint. More play up to .05 is okay just annoying. You won’t damage the joint so don’t panic. At this point it would be a good idea to tighten the joint.

WHEN CHECKING FOR PLAY MAKE SURE ANY PLAY YOU SEE IS NOT COMING FROM LOOSE BOLTS, LOOSE JAM NUTS OR MOVING MOUNTS. EASILY IDENTIFIED BY DISCOLORATION EVEN LIGHT RUST NEAR THESE PARTS.

Regular greasing maintenance

Every environment is different, so is every driver. It’s impossible to say how often is good. All we know is grease allows the joint a longer life with less need for tightening the adjusting ring. A daily driver on the street, maybe every oil change. Rainy streets more often. Snow and slush same deal. Gravel roads once a month. On my gravel road in the spring once a week. Or not. It all depends on how picky you want to be.

MUD TRUCKS ****after every event****



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REBUILDING STEP 1: When you start to take your Heim Joints apart, the first step is to BACK THE SET SCREW OUT!!! This is very important. The set screw is in there to ensure the ring does not back out when the ball moves back and forth. If the set screw is still in there when you start to back the ring out, you will have a heck of a time trying to remove the ring and when you finally start to move it, you will strip the threads of the ring and ruin the set screw in one shot..

STEP 2: Take out the set screw and unscrew the ring using a spanner tool (DO NOT USE A CHISEL or you will ruin the ring). Once the ring is out, remove the spiral lock using a dental pick then the top cup, ball and the lower cup. Inspect them. Clean all parts thoroughly, including the inside of the Heim body to get rid of any old grease, dirt or debris. Wire wheel them to remove any ruff buildup.

STEP 3: Line the inside of the cup with grease. EMF only uses ARCHOIL High-performance Nano grease for ours, but you can use whatever suits your needs if this isn’t available. Another good suggestion is Off-road or Racing grease from AMSOIL.

STEP 4: Press the cup with your fingers into the body with the thickest part of the cup at the bottom. Make sure it is pressed all the way down to the bottom. You have to press it in evenly on all sides, or it will get jammed sideways. You might have to gently tap it into place if you are having a hard time, just remember not to hit it hard or with sharp objects so you don’t mark up the cup.

Note : On joints assembled after 2013 the lower cup has a chamfer on the back lip. The upper cup has a square shoulder. If they are mixed up the spiral lock won’t install into its groove.

STEP 5: Place the clean ball inside the cup and then place the greased top cup on with the thick flat side pointing up towards you on the other side of the ball. Make sure the cup is pressed all the way down as far as it can go with no gaps.

STEP 6: There will be a groove where the Spiral Lock rung goes into place. This is a very important part of the joint as it is our Patent-Pending retaining system and will ensure all of your inner components stay in place. Spread the Ring apart with your fingers and insert the end of the ring into the groove. Follow all the way around with a pick or even an allen key and set the spiral lock into place inside the groove. It’s a little tricky and takes some getting used to but once you got it, it’s no problem.



STEP 7: Put the ring back in (Or Tie Rod End Cap) with the spanner tool. Tighten until the ring stops.

STEP 8: Insert a piece of steel, a screwdriver or anything you have into the through-hole to lap the ball and make sure it is set correctly. You should be able to lap it back and forth with a little tension. If you can’t move the ball, you tightened the ring too much. If the ball moves freely, you didn’t tighten it enough.

STEP 9: Once the ring is set, drill into the ring through the set screw hole using a #21 bit or a 7/32(depending on the set screw size) Warning hold the lock ring with the spanner wrench of the ring will spin loose as you’re drilling.

Take the set screw and install. We recommend a dap of purple or blue NOT red loctite. Although some teams prefer not to loctite at all.

Now your Heim Joints should be all ready to go! It is also a good idea to always check your jam nuts to ensure they are as tight as they can be so the joint won’t move. Please grease after every outing or event and tighten the lock ring as needed.

If you have any other questions about EMF Heim Joints, please feel free to check out our FAQ section at www.emfrodends.com or send us an email at sales@emfrodends.com and we will be happy to help you out.

Thank you for purchasing EMF Heims!

Sincerely,

EMF Rod Ends & Steering Components

Ph: 403-935-3540

Toll Free: 877-236-3545