572R Series II Pipelayer Power Train Caterpillar

Illustration 1	g00428302

(1) Thickness of six friction discs and seven clutch plates ... 44.37 ± 1.61 mm (1.747 ± 0.063 inch)

Thickness of one friction disc ... 4.70 ± 0.18 mm (0.185 ± 0.007 inch)

Thickness of one clutch plate ... 2.310 ± 0.075 mm (0.0909 ± 0.0030 inch)

(2) Thickness of five friction discs and six brake plates ... 37.36 ± 1.35 mm (1.471 ± 0.053 inch)

Thickness of one friction disc ... 4.70 ± 0.18 mm (0.185 ± 0.007 inch)

Thickness of one brake plate ... 2.310 ± 0.075 mm (0.0909 ± 0.0030 inch)

(3) Spring

Illustration 2	g00428459
Position for assembly of spring (3)

Adjust the Brake Pedal

Illustration 3	g01266686

1. Adjust setscrew (2) so that the actuation of switch (9) is at the correct percent duty cycle of control (10) .

2. Obtain the reading for the percent duty cycle while brake pedal (1) is in the rest position (fully up position).

   Add 19 to the reading. The result will be the correct actuation point for the switch. The switch should always activate within ± 1 of that calculation.

3. Apply 4C-4030 Thread Lock Compound to the threads of the bolts that hold the sensor in place.

4. Install the lip seals 1 ± 0.5 mm (0.0394 ± 0.0197 inch) below the face.

5. Drive bearings on the stamped end only.

6. Use the tread on the surface of the pedals to align both of the pedals. At the same time, keep the saw cut in the pedals roughly in line with the timing mark on the shaft.

7. In order to determine the correct position of bracket assembly (7), obtain a reading of 56 ± 2 mm (2.21 ± 0.08 inch) from the control (3) for the percent duty cycle. The reading must be taken while brake pedal (8) is in the rest position (fully up position).