STEERING 4.1 Tracking Adjustment (Speed) Speed control limiter bolts Tracking adjustment, or wheel speed, is set individually for LH and RH sides. If the operator complains the loader does not go in a straight line when the levers are pushed clear forward the limiter stops may need adjustment. 1 Raise the boom arms, engage the boom support pins and shut off the engine. Raise and block the loader securely off the ground. 2 Remove the seat and hydrostatic shield. Note the WARNING C2025 Jam nuts Never work under the boom arms without the boom supports engaged.
Check rod end bushings for wear 4 location of the steering control limiter bolts located front and rear of each steering control lever, just below the pivot point.. (fig. C2025) 3 Make sure the neutral adjustment are adjusted cor- rectly. Refer to pages 4- 5 ~ 4-7. 4 If and when all rod bushings and pivot points have been check for wear or binding, proceed with the wheel speed adjustment. 5 Start the engine and release the parking brake. Adjust Check pintle lever tightness Combination wheel speed and photo - sensor tachometer. Thomas P/N 43981 WARNING Raise the loader securely off the ground before starting the engine. the engine rpm to the full high idle position.
Refer to Section 7 to verify engine rpm. 6 Using an rpm surface speed measuring tool ( fig. C1837 Thomas P/N 43981) check each wheel speed in the forward and reverse direction. Repeat for opposite side. (fig. C4284) 7 Correct wheel speed is set evenly at 72 rpm forward and reverse for both sides on the 137/153 modes. 1300/135 are set at 70 rpms forward and reverse for both sides. 8 If adjustment is necessary, loosen the jam nut (fig. C2025) and turn the limiter bolt in to increase wheel speed or out to slow it down. 9 Tighten the jam nut and retest the speed adjustment. Repeat if necessary. 10 Replace the seat and hydrostatic shield. Note:
If the wheel speed does not meet the above specifi- cation, check the engine rpm. Refer to Section 7. If the engine rpm check out good you may need to check for hydrostatic problems such as drive motor seal leakage etc. Refer to Section 2 for testing procedures. C1837 C4284 4-8