Dongfeng KL truck parts Transmission control lever and support assembly 1703025-TL770

Built as the core interface for driver-transmission interaction, this assembly delivers exceptional shift precision and operational comfort. The control lever features a 3-stage linkage design with a ball-and-socket joint (made of wear-resistant POM material) that reduces shift resistance to ≤50N, enabling smooth gear changes even during long driving shifts. The lever’s ergonomic rubber grip (120mm length, diameter 35mm) with anti-slip grooves fits naturally in drivers’ hands, reducing fatigue during 8+ hour hauls. A precision-machined shift fork linkage (tolerance ±0.1mm) ensures gear engagement accuracy of 99.5%, eliminating misalignment issues that cause transmission grinding (a leading cause of gear tooth wear). The support bracket’s integrated damping pad (EPDM material) reduces shift vibration by 40%, enhancing tactile feedback for drivers

Engineered to withstand repeated shift operations and cab vibration, the 1703025-TL770 assembly features a rugged, high-strength structure. The control lever is made of 45# carbon steel (heat-treated to HRC 35-40) with a tensile strength of 600MPa, resisting bending or deformation even under accidental impact (e.g., driver leaning on the lever). The support bracket is precision-cast from QT450 nodular cast iron, achieving a yield strength of 310MPa and supporting the lever’s full operating load without flexing. The linkage pins are made of 304 stainless steel with a hard chrome plating (5μm thickness), ensuring smooth movement and resisting corrosion—enduring 500,000+ shift cycles (equivalent to 500,000km of typical operation) without wear-related performance degradation

Optimized to minimize noise and vibration in the Dongfeng KL cab, the assembly integrates multiple noise-dampening features. The lever’s ball-and-socket joint is filled with high-temperature grease (operating range -20℃ to 150℃) that reduces friction noise to ≤35dB—far below the cab’s background noise level (65dB). The support bracket’s mounting points use rubber bushings (Shore A hardness 65) that absorb 60% of vibration transmitted from the transmission to the cab floor, preventing resonant noise during idle or highway driving. A dust cover (made of oil-resistant NBR rubber) wraps the lower linkage, blocking transmission oil mist and road dust from entering the joint—maintaining smooth operation and reducing maintenance frequency. These design elements collectively enhance cab comfort, a key factor for long-haul driver retention

This assembly is designed for efficient installation and long-term cost savings for Dongfeng KL operators. Its modular design allows a 2-person team to complete replacement in 1.5 hours—40% faster than aftermarket assemblies with mismatched brackets. The OE-compatible linkage ensures no need for transmission recalibration (a $300+ service for non-OE parts), avoiding additional downtime. By delivering precise shift control, it reduces transmission wear by 30%, extending the transmission’s service life and lowering overhaul costs (average 16-speed transmission overhaul costs $8,000+). The assembly’s 300,000km service life—twice that of non-OE alternatives—reduces replacement frequency. Backed by a 2-year/200,000km Dongfeng warranty, it provides reliable shift performance and predictable maintenance expenses, ensuring maximum uptime for fleet operations