The front crankshaft seal on my 95 E320 Sedan is leaking, replacement requires removal of the harmonic balancer/pulley. Service CD shows a flywheel locking tool used to prevent crank rotation while applying torque to remove bolt. This tool is available from my dealer but is a bit pricey. So, my question for the experts--will I damage anything if I use my air impact wrench to remove this bolt? (I'm a bit concerned that I could damage the timing chain guides and or tensioner due to impact tensioning...........)

Thanks in advance,

J. M. van Swaay

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1994 E320 Wagon, 230,000 miles
1995 E320 Sedan, 106,000 miles
1994 E500 Sedan, 79,000 miles