Transmission Clutch Forklift Parts Forklift Hydraulic Clutch Assembly

Hydraulic Clutch Assembly for Forklift Transmission — Complete Replacement Kit

This hydraulic clutch assembly is a complete replacement unit designed for manual-transmission forklifts in the 2-3.5 ton class that employ a hydraulically actuated clutch release mechanism. Unlike mechanically linked clutch systems that use cables or rods to transfer pedal force to the release fork, a hydraulic clutch system uses a master cylinder at the pedal and a slave cylinder mounted on the transmission bellhousing, connected by high-pressure fluid lines. When the operator depresses the clutch pedal, hydraulic pressure is generated and transmitted to the slave cylinder, which extends a push rod against the clutch release fork — smoothly disengaging the clutch with significantly less pedal effort and more consistent feel than mechanical linkages. This hydraulic design is standard on modern Heli, Hangcha, TCM, and Toyota forklifts, and a complete assembly replacement restores factory-fresh clutch actuation performance while eliminating the progressive degradation that occurs as individual hydraulic components age.

This assembly integrates the clutch pressure plate, clutch disc, release bearing, and the hydraulic slave cylinder/release fork assembly into a single pre-configured kit. The pressure plate utilizes a diaphragm-type spring mechanism housed in a cast iron cover that provides uniform clamping force across the full friction surface — essential for consistent torque transmission and smooth engagement. The clutch disc features high-grade organic friction material bonded to a sprung hub with torsional damper springs that absorb engine vibration and cushion driveline shock. The hydraulic slave cylinder is manufactured with a precision-honed bore, EPDM rubber seals resistant to DOT 3 and DOT 4 brake fluids, and a hard-chrome-plated piston rod for corrosion resistance and smooth operation. The release fork is forged from alloy steel with a hardened pivot point and wear-resistant release bearing contact pads. All components are pre-assembled and pre-aligned at the factory, eliminating the in-field alignment guesswork that commonly leads to premature clutch failure from misalignment.

Compatible with Heli CPCD20-CPCD35, Hangcha CPCD20-CPCD35, TCM FD20-FD35, Toyota 7FG/7FD 20-35 series, Komatsu FG/FD 20-35, and Lonking LG20D-LG35D hydraulic-clutch forklift models. Always confirm your clutch disc diameter (typically 275mm for 2-3 ton, potentially 300mm for 3.5 ton variants) and input shaft spline count before ordering. Flush and replace the hydraulic fluid with fresh DOT 3 or DOT 4 fluid when installing the new slave cylinder, and bleed the system thoroughly to remove all air from the lines. Replace the pilot bearing and inspect the flywheel surface for heat checking or scoring during installation. For individual components, browse our clutch disc category. Reference OEM specifications at Heli official website.

Technical Specifications

• SKU: CLUTCH-HYD-ASSY
• Type: Complete Hydraulic Clutch Assembly — Pressure Plate + Disc + Release Bearing + Slave Cylinder + Release Fork
• Actuation: Hydraulic — DOT 3/DOT 4 Compatible Slave Cylinder
• Pressure Plate: Diaphragm Spring, Cast Iron Housing, Dynamically Balanced
• Slave Cylinder: Precision-Honed Bore, EPDM Seals, Chrome-Plated Push Rod
• Release Fork: Forged Alloy Steel, Hardened Pivot, Wear-Resistant Contact Pads
• Application: 2-3.5 Ton Diesel & LPG Hydraulic-Clutch Forklifts
• Warranty: 12 Months

Compatible Forklift Brands & Models

Kingstream hydraulic clutch assemblies are factory pre-assembled, pre-aligned, and individually packed in heavy-duty export cartons with molded foam inserts and desiccant packs. Each kit includes installation instructions, slave cylinder banjo bolt copper washers, and pre-applied assembly lubricant on friction surfaces. QC inspection includes pressure plate flatness measurement, diaphragm spring finger height consistency, clutch disc runout check, slave cylinder hydraulic pressure test, and release fork dimensional verification. 12-month replacement warranty. Contact us for bulk pricing, fleet overhaul kits, or technical fitment verification with your forklift model and serial number.