T-Rex 600N (belt version) last updated 7-1-2007

Page 5a[click here for index]

Start with bag 600NH
This contains the rotor head parts. The first step is to install the thrust bearings in the blade grips. It is critical that you get the bearings in the correct direction otherwise not only will this cause problems with the blades going out of track but you will also notice the grip has a lot of resistance when you try to pivot it. Don't worry, it is not difficult just something you need to pay attention to so lets begin.

From the main bag 600NH remove the smaller bag 600NH1. First look at the bearings that are installed in the blade grips. Check that the bearings are flush with the back side of the grips. On the inside of the grip visually examine that the bearing is not crooked as well as look for any pieces of plastic left over from the molding process. If you have to get this bearings out for any reason use and allen wrench from the opposite side to push it out. Like in the included picture.

Open the even smaller bag 600NH1A. This contains the bearings we will install in each blade grip as well as the balls and blade grip bolts. Here it is good to have a small container to dump the parts into.

From this bag we will install the link ball first. Make sure that as you turn it that it does not wobble and that is goes straight inline with the post on the grip. The manual says to use a very small amount of CA glue on the tip of the screw. Install the second ball on the other grip the same way.

Next we do the thrust bearings. Here's a tip: To install the bearings I find it much easier to use the spindle shaft from bag 600NH2. Look at the picture, here you see I put the bearings on the shaft temporily. No loctite on the bolt during this stage.

You will notice that one of the thrust washers has 'IN' wrote on it. This is a nice feature that Align has done to help prevent people from installing them in the wrong direction. Place this one on the spindle shaft first with the flat side with the word 'IN' toward the middle of the shaft.
Next apply some grease to the track on the opposite side of this thrust washer. The grease is in bag 600NZ, sub bag 50HZ006. It is a red gel in a smaller square bag, not a bottle. Just cut the corner from the bag. Apply a small amount to the groove.
Next install the cage of balls with the open end against the 'IN' thrust washer. The reason is so that it will retain the grease as centrifugal force will try to sling it out if installed backwards.

Next place the other smaller inside diameter thrust washer on. The grooved side needs to be against the balls. Next you see I put the allen bolt for the spindle shaft on to hold the thrust bearing together. I did not tighten it nor did I install the washer for that bolt. This is just temporary.

Now take the larger 10mm washer and slide it on the spindle shaft from the other direction. Stick the spindle shaft in the blade end of the grip and pull the grip ends apart so you can get the thrust bearings in. Yes, this is a little tough, the grips angle inward on the blade end. Now use an allen wrench to push the assembly into the grip. You may notice that it hits a section that makes you think the bearing is in but then with a little more pressure it slips and then seats all the way in. See the pictures, the outside thrust washer is a little under being flush with the grip. Unscrew the bolt and remove the shaft. Now do the other grip the same way.

We are done with the grips, that wasn't so bad was it...

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