There are some basic maintenance procedures that should be done on a regular basis to help you get the best out of your GrainVac VRX.
- Before you take your grain vac out, you will want to oil the chain. We recommend using an aerosol chain lube, applied when the chain is cold.
- You also need to grease the overrunning clutch daily.
- Take a good look at where your augers join. The rubber seals should be in good shape, with no gaps.
- Also check your inspection door. Make sure the seal is in place all the way around the door.
- At the rear of the grain vac, behind the guard, you will find one grease zerk on the belt idler. 1-2 pumps of grease are needed here roughly every 20 hours of operation.
Seasonally/100 hrs of Operation
- The PTO shaft requires greasing in a few places. Each cross has a zerk, and on these, apply one pump of grease.
- You will also find zerks on the outside of the shielding, one of the most neglected because people don’t realize they are there. Give them each 2-to-3 pumps.
- Move to the front shaft bearing. This zerk requires 1-to-2 pumps.
- Next, the shear hub needs 1 or 2 pumps. This needs to stay free in case you blow a shear pin.
- At the back of the GrainVac, remove the rear guard and hoses to gain access. Behind the large pulley there is a bearing. Apply 1-to-2 pumps of grease.
- At the very top of your auger, there is one zerk that needs 1-to-2 pumps.
- The next thing you should be checking every one hundred hours is the air lock spring tension. Using a fish scale, adjust the tension to 3 pounds at one inch of opening on the large door and no more than 6 pounds at 6 inches of opening, and 3 pounds at one inch of opening on the smaller door. These settings will ensure a tight seal, which is critical to your machine’s performance.
- The rubber torsion axle has zerks beneath these rubber caps. Give them 1-to-2 pumps annually, and replace the rubber caps.
- Gauge the rear belt tension by measuring the length of this spring. Compressed, it should be 3 7/8 inches.
- Inspect your belts once a year and check for wear. If they are worn or cracked, replace them right away.
To ensure that your gearbox is in top running order, follow these steps:
- Make sure your grain vac is level – both front-to-back and side-to-side.
- You want to make sure that your breather functions properly to avoid build-up of pressure, causing the seals to leak. Remove the breather.
- Clean the breather with a solvent and blow it out with compressed air.
- Remove the plug on the side fill hole.
- If oil starts to come out, you have enough oil in the gearbox. If not, add oil until it starts coming out the side fill hole.
- Put the side fill plug back into place.
- Reinstall the breather.
If you follow these basic maintenance steps, your GrainVac VRX will run at it’s best. Any questions or comments please comment below or give us a call.