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The article has represented the results of researching multiple wheeled chassis (MWC) hydromechanical transmission dynamic loading. On the basis of comparing frequencies of dynamic moment resonant fluctuations and frequencies of diesel engine indignation, the hypothesis about subharmonic resonance realization in the mechanical system having strong nonlinear elastic characteristic is offered and grounded. A method of tuning out undesirable fluctuations which form dynamic loading to take subharmonic resonant modes out of the engine rpm speed working range is developed. On the basis of the results obtained, some technical decisions are suggested which allow decreasing transmission dynamic load and a new type damper designs of different models are developed. It allows taking resonant modes out of the engine rpm speed working range, thus creating the conditions of increasing transmission elements durability.