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First Fit Installation

Instruction for Straight Pin with Mounting Tool

2.0

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.

 

1. Bolt  2. Washer  3. Sleeve  4. Axle (Pin)  5. Bolt for mounting tool  6. Stop screws 
7. Mounting tool  8. Allen key screws

 

The picture shows a female axle but the principle is the same for other designs.

 

Installation

1

Grease the sleeves and axle, preferably graphite grease.

2

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

 

Assemble the mounting tool and bolt for mounting tool using the allen key screws. Insert the axle and position it in the bores. Install the sleeves, then the washers and fasteners. Tighten the fasteners with recommended torque.

3

Remove the allen key screws and mounting tool. Mount the stop screws.

Torque recommendations

4

Hex Bolts and Bolts for Mounting Tool

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

5

Grease the pivot (if applicable). Move the machine through full range of motion several times (typically 10) and recheck the torque. This is normally performed during the final inspection of the machine.

Ensure that there is a minimum distance of 0,5mm (0.02”) between the washer and the lug. Ensure that there is a minimum distance of 0,5mm (0.02”) between the bolt for the mounting tool and the lug. ATTENTION! If the washer or bolt for the mounting tool is in contact with the lug, contact your dealer or Expander System.

 

More information about the Expander System warranty: https://www.nord-lock.com/lifetime-warranty