Following these instructions will ensure that the Expander System is installed correctly and the pivot life is prolonged. https://www.nord-lock.com/en-gb/services/manuals/expander-first-fit/straight-pin2/

INSTALLATION INSTRUCTIONS

Straight Pin

v4-2

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.

 

A. Female axle. B. Male axle with spanner nut. C. Male axle with nut.

PREPARATION

These instructions are valid for lug holes with following maximum tolerances:
Hole tolerances: H9 according to ISO 286-2.
Lug hole inner surface roughness: Ra 3.2.
Missalignment of lugs: Outer lug distance/500.
If your lugs are outside these specifications please consult Expander System for best installation procedure.

There should be no bushings in the lug ears.

INSTALLATION

1

Grease the sleeves and axle, preferably graphite grease.

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

2

lnsert the axle and position it in the bores. Install the sleeves, then the tension washers and fasteners. Cross-tighten the fasteners with torque as specified in the chart.

TORQUE RECOMMENDATIONS

3

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
4

After initial torque move machine through full range of motion several times and recheck torque.

5

Ensure that there is a minimum distance of 0,5 mm (.02”) between the washer and the lug. 

DISMOUNTING

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