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Installation Instructions

Straight Pin, Through Bolt

v4-2

Following these instructions will ensure that the Expander System is installed correctly and the pivot life is prolonged.

Congratulations! You have purchased a custom engineered solution to the pivot wear problem on your machine. Contact your dealer or Expander before proceeding if you have any questions.

 

1 Bolt. 2 Washer. 3 Sleeve. 4 Axle (Pin). 5 Expander flat headed nut for internal hexagon.

Preparation

1

Remove any bushings to eliminate future wear between the bushing and the mounting lug.

2

Repair any structural damage i.e. cracks or bent lug ears before installation.

3

Smooth out irregularities in the bore surfaces.

4

The difference between min and max diameter in the worn lugs must be within .06” (1.5 mm) for the sleeves to fit correctly.

ATTENTION! If the worn lugs diameter at any point is 2 mm (.080”) or more over original lug diameter contact your dealer or Expander System. You will need oversized sleeves.

Installation

5

Grease the sleeves and axle with grease available, preferably graphite grease. Do not grease the threads!

6

Install the Expander System loosely assembled. Position it in the bores and tighten the fastener. Hold the washer with a plier to prevent the axle from turning. Torque as specified.

NOTE! If applicable: position greasing outlet 90 degrees to force direction to minimize stress concentration at outlet.

 

Torque recommendations

7

Hex Bolts

Torques M12-M24 ± 10%, M30... +30/-0%

  M12 M14 M16 M20 M24 M30 M36 M42
Nm 70 115 175 350 500 600 700 900
lb-ft 52 85 129 258 369 443 516 664

Hex Nuts: Standard Height

Torques M12-M24 ± 10%, M30... +30/-0%

  M12 M14 M16 M20 M24 M30 M36 M42
Nm 65 115 175 250 350 500 600 700
lb-ft 48 85 129 184 258 369 443 516

Hex Nuts: Low Height

All Torques ± 10%

  M12 - M16 M20 M24 M30 - -
Nm 60 - 125 200 275 350 - -
lb-ft 44 - 92 148 203 258 - -

Spanner Nuts

All Torques ± 10%

  M17 M25 M35 M45 M55 M65 M75 M85
Nm 50 120 250 500 600 700 800 900
lb-ft 37 89 184 369 443 516 590 664
8

After initial torque move machine through full range of motion several times and recheck torque. Check the torque after 10 hours, 40 hours and at regular service intervals to ensure proper seating of the sleeves.

9

Ensure that there is a minimum distance of 0,5 mm (.02”) between the washer and the lug. NOTE! If flange design for easy removal of the sleave is used there should be a minimum distance of 6 mm. 

ATTENTION! If the washer is in contact with the lug contact your dealer or Expander System.

 

Dismounting

10

Dismount bolt and washer. Tap the axle until the tension on the sleeves is released (use a piece of pipe between the axle and the mallet/hammer not to damage the threads). Remove the sleeve with a plier.

11

Mount a short bolt and remove the axle using a sliding hammer, puller or smililar. Bolt is normally fine pitch and sold by your dealer.