First Fit Installation
Instruction for Straight Pin
2.1
Follow the installation instructions to ensure that the Expander System is installed correctly and to prolong the pivot life.
Expander System pivot pin comes with a warranty against lug wear of 10 years / 10 000 hours in operation (whichever comes first) from the date of purchase.
This instruction is valid for lug holes with the following maximum tolerances:
- Hole tolerances: H9
- Lug hole inner surface roughness: Ra 3.2
- Misalignment of lugs: Outer lug distance/500
- There should be no bushings in the lug ears
If your lugs are not within these specifications, please consult your dealer or Expander System for installation recommendation.
A. Female axle B. Male axle with spanner nut C. Male axle with nut
1. Bolt 2. Washer 3. Sleeve 4. Axle (Pin) 5. Spanner nut 6. Nut
Installation
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.
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.
Torque recommendations
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 |
Final check
After initial torque, grease the pivot (if applicable), move the machine through full range of motion several times and recheck the torque. Check the torque after 10 hours, 40 hours and at regular service intervals to ensure proper seating of the sleeves.
Ensure that there is a minimum distance of 0,5 mm (0.02”) between the washer and the lug. ATTENTION! If the washer is in contact with the lug, contact your dealer or Expander System.
