Steering Stop Adjustment

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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III. AXLE ADJUSTMENT Fig. 5 Fig. 6 8. Remove the jack or hoist supporting the brake drum. Using a pry bar under the upper kingpin bracket, 1/32 to 3/32 play may be observed on a new assembly. After loading, up to 1/8 play is acceptable. More than this requires inspection for wear or distortion. Fig. 7 9. The kingpins should be readjusted after any loosening or removal and reassembly of the upper or lower kingpin brackets, replacement of kingpin bushings, etc. D. Steering Stop Adjustment 1. Adjust the tie rod. See section III-G. 2. Steering stop adjustment is made at the factory, needs no further action unless a major part such as the suspension yoke, spindle yoke, kingpin bracket or the like has been replaced. 3. The steering stop is the lower rear, upper kingpin bracket mounting bolt (See fig. 7). Adjustment is made by the installation of a number of washers under this bolt’s head (See fig. 8). The purpose of the stop is to protect the universal joint and the brake chamber from hitting another part in a full turn of the steering. Fig. 8 4. Turn the steering to put the axle first in the full left turn condition. (See fig. 9). The head of the stop bolt should stop the turn before any of the rotating parts in the left hand steerable drive end interferes with another part. The brake chamber on the right end should not hit the suspension yoke. Turn the steering to the right and check the corresponding conditions (See figs. 8 and 10). NOTE: POWER STEERING STOPS IN THE VEHICLE STEERING GEAR SHOULD NOT ALLOW THE APPLICATION OF POWER TO THE STEERING WHEN THE STEERABLE DRIVE END IS IN THE FULL TURN CONDITION. -6-

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