Symptoms
Vibration at idle, a wobbling crank pulley, cracked or bulging rubber, chirp or rattle that changes with RPM. If the outer ring lets go you lose the belt drive.
The fix, step by step
- Remove the belt, lock the crank with a counter-hold tool, and replace the balancer with a new torque-to-yield centre bolt and a new front crank seal.
Tools & part numbers
- Crank counter-hold tool
- 27 mm socket
- breaker bar or high-torque impact
- new balancer, centre bolt and crank seal
Where to buy the parts
Genuine Mercedes crank pulley kit 113 030 01 03 (G 55 2005–10)FCP Euro ↗Amazon ↗
Genuine Mercedes crank pulley bolt 000 990 02 00 (G 55 2005–10)FCP Euro ↗Amazon ↗
Corteco front crankshaft seal 023 997 84 47FCP Euro ↗Amazon ↗
CTA crank pulley counterhold tool 7270FCP Euro ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Mercedes-Benz G 55 AMG parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.