Installation instructions for the ARP harmonic balancer bolt, part #147-2503, for the Cummins 6.7L 24V diesel. ARP fasteners provide superior clamping strength over factory hardware. This guide covers cleaning, inspection, lubrication and the correct torque procedure.
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Application
- Part Number: 147-2503
- Application: Cummins 6.7L 24V Diesel
- Component: Harmonic Balancer Bolt
Torque Specification
- Harmonic balancer bolts: 90 ft-lbs (using ARP Ultra-Torque Fastener Assembly Lubricant)
IMPORTANT: The published torque value assumes the threads, underhead and washer-contact surfaces are lubricated with ARP Ultra-Torque Fastener Assembly Lubricant. Using a different lubricant or installing dry will change the achieved clamp load.
Installation
- Check the part number(s) for your application against the part number(s) listed on the instruction sheet.
- Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damage, plus proper fit, length and dimension.
- To ensure proper thread engagement and accurate torque readings, clean the threads in the end of the crankshaft. Chase them if necessary with a thread chaser or tap.
- Lubricate the threads of the bolts, the underhead of the bolts and the front face of the balancer (where the washers contact the balancer) with ARP Ultra-Torque Fastener Assembly Lubricant. Install the washers onto the bolts with the chamfered side facing the bolt head, then install the bolts hand tight.
- Tighten the balancer bolts to 90 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.