Sunline Coach Owner's Club - RRS2670's Album: Axle Alignment

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Axle Alignment

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Axle Alignment

Fabricated or bought tools for doing an axle alignment. Checking axle dimensions from hitch ball to front axles.
Checking centers on front to rear axles.
Checking perpendicular centering distance relative to frame of each axle.

Axle seat miss-aligned from leaf spring center pin

Verification measurement using bottom centered lug

The measurement is 11-7/8" edge of pin to center of leaf eye.

Measured edge of leaf center pin to center of eye on left side of trailer, rear leaf.

The measurement is 11-3/4" edge of pin to center of leaf eye.

Checking steel scale level with angle finder

These are the measurement I got. The front axle seems to be in alignment with the ball, but the axle toe difference from left side to right side...

I used a 18" steel scale that was centered and leveled to get measurements to the frame from each side of drum.

Here is the tape measure held taught at 15 lbs. Since I was doing this myself I couldn't easily get a picture of my measurement reference point. I...

Here is where the tape measure hooks up to on the hitch ball. The absolute measurement isn't critical unless your welding in new frame hangers. For...

If you zoom it you will see that the curb side is 11/32" shorter center to center. So this equates to 30-31/32" center to center curb side...

This is the measurement setup from drivers side, setup on curb side. If you zoom in your see this side has a shorter center measurement.

This is the center to center measurement of the drivers side, 31-5/16"

This is checking the axle centers on the drivers side. The horizontal straight edge squares up the bolt pattern, and the center measurement is from...

Make sure you scale is level and centered on axle top.

The measurement I used was 3-3/4" from the top of axle to bottom of frame. I calculated the tire clearance to top of wheel well at this height to be...

Using bottle jacks to preload the leaf springs equally on all for wheels. I wasn't sure where the loaded springs would end up. When I started...

This is where the tape measure hoods up to pivot point on hitch ball. The extension bolt has to be thick enough not to bend when applying 15 lbs of...

Scale hooked to tape measure. I found 15 pounds got the tape very taught for accurate measurement.

Punched a hole for scale to hook to. It is far enough away from where you are measuring to so it doesn't interfere with measurement.

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