ROSS TUFFBOND PERFORMANCE PARTS

Installation Instructions

Thank you for purchasing a Ross TuffBond harmonic balancer / crank pulley damper. It is designed 10 absorb more of the damaging torsional vibrations found in high performance engines and has been precisely machined from high quality materials on CNC equipment. It will provide years of trouble free service if installed correctly and, as the balancer has been factory balanced, it must not be drilled for balancing purposes.

PLEASE NOTE: Fitting of the wrong type of balancer / damper or the failure to follow our installation procedures can lead to failure of the balancer and possible engine damage.

1. Ensure you have the correct balancer to suit the type and model of engine by verifying the part number, etched onto the outside diameter of the balancer, is correct for your application. If in doubt, please contact Ross Performance Parts before attempting installation.

2. Check the pulley positions are in the same locations as the pulleys on the original balancer. This is particularly important in Nissan 6 cyl RB Series engines, as pulley spacing varies within the engine family. If pulley spacing varies from original please contact Ross balancers before attempting installation.

3. Check that the position of TDC markings on the Ross balancer is the same as the original balancer.

4. Check the snout of the crankshaft is free of burrs, nicks, scratches and also inspect the woodruff key for any imperfections - replace if damaged.

5. Measure the diameter of the crank snout and the inside diameter of the harmonic balancer / crank pulley damper to ensure the correct interference fit exists. Too little interference will lead to balancer/crank snout failure, and too much interference will inhibit the balancer / damper from fitting correctly. Ross balancers are manufactured to the bottom tolerance size of the original factory balancer sizing and are designed to be an interference fit, just like the OEM balancer / damper. The interference fit range is as follows:

        • Crank snout diameter Interference:
        • 1.000" to 1.250"-----------------------------.0007"to.0009"
        • 1.250" to 1.375"-----------------------------.0008"to.0011"
        • 1.375"to 1.600" .0009" to .0012"

Due to variations in factory machining tolerances, it may be necessary to hone the inside diameter of the balancer / damper to achieve the above interference fit. This is easily accomplished with a flex-hone until the correct fit is obtained. A 3 or 4 fixed stone hone cannot be used for this operation.

6. Place some anti-seize lubricant on the snout and press the balance in place with a harmonic balancer / crank pulley damper installation tool, ensuring the woodruff key remains in the correct position relative to the keyway. Do not hit the balancer / damper with a hammer. When installed, turn the engine over by hand to make sure the balancer does not foul any engine components.

7. Install the balancer / damper retaining bolt, washer and torque to factory specifications. Torque all other bolts to the recommended specifications for the particular fastener used.

8. Refit belts, set tensions to factory specifications and start engine to observe belt alignment and to check for pulley runout. If all is OK, rev engine to 4000 RPM to recheck pulley alignment.

NOTE: Removal of the balancer / damper is the reverse of installation
Remove the balancer / damper retaining bolt/washer, remove 2 or 3 outer bolts and fit a proprietary balancer sremoving tool to pull the balancer / damper off the snout of the crankshaft. Do not attempt to pry or lever the balancer from the engine. A Ross Tuffbond balancer / damper does not require any routine maintenance and should provide years of trouble free service if the above instructions have been correctly followed. If you have any questions during or after installation, please contact Ross Performance Parts - we are here to help.

DISCLAIMER INFORMATION
ROSS TUFFBOND strives to maintain all information on its website up to date by continually updating both product availability and specifications. However, we offer no such guarantees that all of the content provided on this site is available for purchase. We and Web Designer assume no responsibility for any errors that may appear on this site or in our printable download material. Information contained on this site is subject to change without notice. All Rights Reserved.

ROSS TUFFBOND, the ROSS TUFFBOND logo and other ROSS TUFFBOND marks such as METAL JACKET are owned by ROSS TUFFBOND and may be registered. All other trademarks are owned by their respective owners.