Combine Troubleshooting Guide & Tech Tips
Engine & Fuel System
Combine adjustment tips
Chain, Sprocket and Combine belt replacement tips
Timing Case-IH Two-Piece Unloading Augers



After 36 years we've learned a few things along the way, so decided to share some basic and advanced troubleshooting tips for your convenience. In no way are these tips meant to replace your service manual. Make sure you follow all safety and service precautions in your operators or service manual before attempting any repairs.
We offer one of the largest selection of combine parts available in the aftermarket industry.

*Combine adjustment tips To properly adjust a combine you must start at the head to insure smooth crop flow to the threshing area. Please read the tips before for help pre-season maintenance suggestions.
Combine Head
Check the reel teeth, replace any that are bent or missing. Make sure the reel slats are straight and move freely. Check the guards for wear and replace any that are worn or broken. Check the sickle for broken, cracked or worn sections. A good sickle is a must for smooth crop flow and to minimize shatter (ie. a sliced off crop instead of a torn off crop). If your machine has an auger, check the adjustment from the floor to the auger. This will minimize wrapping and crop shatter and greatly improve crop flow. Check the fingers in the auger and replace any that are bent or missing. If your head has a belt to move the crop instead of an auger check the aliment and tension on the belt. Carefully check any splices for signs of failure. Check the feeder house chain and replace any worn or cracked slates. If the sidebars or rollers on the chain are showing any wear replace the entire chain. Check head and feederhouse drive belts for wear and replace to minimize slipping which can result in uneven crop flow.
Threshing Unit Check the concave bars for uneven wear. Check for rounded edges and replace if bars are not flat and straight. MCheck your cylinder or rotor rasp bars and replace if worn. If your machine has crop delivery augurs check for wear. If they are sharp replace them even if they are still working, they're cracking crop that is being blown out the back and you don't even know it. Check your cleaning fan for loose or damaged blades and replace any that are less than perfect. Check both your top and bottom sieve for bent or broken fingers and replace if necessary. If your machine has a rear beater check for any damage to the beater or beater grate. Check your straw handling equipment, chopper or spreader and replace any worn or broken parts. Check all belts, chains, sprockets and pulleys and replace if worn.

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Chain, Sprocket and Combine belt replacement tips
General tips for replacing your chain or sprocket Inspect chains and sprockets for side wear, tooth hooking and broken pins or rollers. If there is side wear then realign. If the sprocket is worn replace it. Change the chain if the pins and rollers are worn (a 3% elongation is worn out). Check the tension-too much slack will cause excessive wear and noise. Too much tension will cause premature bearing failure. Lubricate the chain at the end of the day when it is not running and is at operating temperature. This will allow the lubricant to penetrate rollers and pins. If you replace the chain, it pays to replace any worn sprockets or bearings. Note: Our Drives chain is factory preloaded and pre-lubed.
Tips for checking and replacing combine belts
Before harvest check all belts for checking and wear. Watch for belts with shiny or glossy sides-a sign of slippage and/or worn pulleys. If a belt breaks, look for the reason it failed. It could be because of worn chopper knives, out of adjustment variable speed pulleys, worn augers, bearing failure, etc. Vibration after a new belt is installed is a sure sign of bearing failure or misalignment. "It's a good idea to keep an extra belt on hand for quick replacement when time is of the essence.” We offer an extensive line of quality bearings, sprockets, chains and belts.

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Timing Case-IH Two-Piece Unloading Augers
Recently, we have heard of problems reported concerning damaged unloading auger flighting and tubes, as well as excessive horsepower consumption when unloading on Case-IH combines. This is a direct result of improper timing of the front and rear augers. Care must be take when installing these augers to prevent this type of damage from happening to you. First, to properly time the flighting, start with the front (gearbox end) auger. Turn the auger until the trailing edge of the flighting (nearest the bearing support) is at the 12 o'clock position, as viewed from the discharge end., Next, install the rear auger (discharge end) with the leading edge of the flighting at, or very near the 10 o'clock position. Also be aware of updates that Case-IH has made through the years regarding the update to a floating hex shaft between these two augers. This information, must be known prior to replacing either of the two augers to insure you can correctly order. For more information please read the Case-IH Service Bulletin Document #HSE SB 030.1 96 dated November 7, 1996. *From A&I Tech Tips

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