YQXZD30H Hydraulic Transmission Assembly — 34-Tooth, Without Torque Converter

The YQXZD30H transmission assembly is a hydraulic powershift gearbox with a 34-tooth output gear, designed for HELI, Hangcha, and Dalian 2-3.5T forklifts — supplied as the gearbox section only, without the torque converter. This is the correct specification when the transmission case, clutch packs, or reduction gearing have failed but the torque converter is still serviceable, or when retrofitting a replacement gearbox onto an existing converter. The 34-tooth output gear count is the definitive identification feature — verify this tooth count against the removed unit, as YQXZD series transmissions are produced with different output gear tooth counts for different axle ratios.

Built to the YQXZD30H OEM specification, this transmission assembly features a cast iron main case with precision-bored bearing journals, forward and reverse multi-plate wet clutch packs, helical reduction gearing with a 34-tooth output gear, and an integrated hydraulic control valve body. The clutch packs are assembled with factory-set stack height and end-play tolerances — incorrect stack height from a field rebuild causes either clutch drag (too tight, burns the pack at idle in gear) or delayed engagement (too loose, the piston bottoms before full clutch apply). The valve body is torque-sequenced to specification, ensuring even gasket compression and preventing internal cross-port leakage between the forward and reverse hydraulic circuits.

Direct OEM replacement for HELI CPCD20-35, Hangcha CPCD20-35, Dalian 2T-3.5T, and Lonking LG20-35DT forklifts equipped with the YQXZD30H 34-tooth hydraulic transmission. Note: the torque converter is not included — order the matching converter separately if required. For torque converters, flex plates, and input shafts, browse our forklift hydraulic transmission parts.

Technical Specifications

• SKU: YQXZD30H
• Type: Hydraulic powershift gearbox — without torque converter
• Output Gear: 34-tooth helical
• Case Material: Cast iron, precision-bored journals
• Clutch Packs: Forward + reverse, multi-plate wet type
• Control: Integrated hydraulic valve body
• Assembly: Factory-set clearances and torque sequence
• Fitment: 2T-3.5T forklifts, YQXZD30H 34T specification
• Note: Torque converter sold separately — verify 34T before ordering

Compatible Forklift Brands

Each YQXZD30H transmission ships on a pallet with all ports capped. Count the output gear teeth on the removed unit before ordering — YQXZD transmissions exist with different tooth counts for different final drive ratios, and a mismatched tooth count will not mesh with the axle pinion. Always replace the transmission-to-converter gasket and torque converter input seal. For YQXZD30H service specifications, consult Baldwin Filters. Kingstream stocks the YQXZD30H for freight shipping — worldwide delivery with online tracking.