Figure 4 - Measure Dimension "B"

TM-5-3820-256-24-4 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SUSPENSION ALIGNMENT NOTE - Steps 8,9, 10, 11, and 12 apply to 6x4 vehicles. 8. Position slotted bar one side of vehicle so that pointers are engaged in center hole of both rear axles. 9. Measure distance between cord of plumb bob and pointer on rear rear axle and record (dimension "B" in Figure 4). Figure 4 - Measure Dimension "B" 10. Position slotted bar on opposite side of vehicle with the same pointer being used on rear rear axle for both sides and measure distance between cord of plum bob and pointer on rear rear axle. Record dimension. 11. Any difference in dimensions from side to side must be equalized if in excess of 3.175 mm (.125 inches). 12. Refer to AXLE ADJUSTMENT portion of this section for procedures to equalize differences in dimensions which exceed 3.175 mm (.125 inches). 13. It is recommended that vehicle be driven a short distance and alignment rechecked. AXLE ADJUSTMENT HENDRICKSON The design of Hendrickson suspensions does not provide for axle adjustment for alignment purposes. If the axles are measured to be significantly out of alignment, the following areas should be investigated as the possible cause. 1. Severely worn walking beam center or end bushings. 2. Worn spring pins. 3. Improper location of frame brackets on frame. 4. Any worn or damaged parts. CTS-4016W - Page 3

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