Forklift Clutch housing

Forklift Clutch Housing: Bell Housing Assemblies for HELI 2-3T, Doosan D35S-2/D40S-2/D45S-2/D50C-2 — 4 Product Lines

The clutch housing — also called bell housing — is the cast iron structural component that bolts between the engine block and the transmission, enclosing the clutch assembly and providing the rigid alignment between the engine crankshaft centerline and the transmission input shaft. On a forklift, the clutch housing serves three essential functions simultaneously: it physically connects the engine to the transmission with a bolted flange joint that must maintain alignment under torque loads that can exceed double the engine’s rated output during torque converter stall conditions, it provides a sealed enclosure that protects the clutch disc, pressure plate, release bearing, and flywheel from water, dust, debris, and oil contamination, and it positions the clutch release mechanism (fork, hydraulic slave cylinder, or cable bracket) at the correct operating geometry for smooth clutch engagement and disengagement. A cracked, warped, or misaligned clutch housing causes the transmission input shaft to run at an angle to the crankshaft centerline — the resulting angular misalignment destroys the pilot bearing or torque converter hub bushing (the small bearing in the crankshaft that supports the input shaft nose), causes the clutch disc hub splines to wear from vibration, and creates a shudder during clutch engagement that the operator feels through the pedal and the entire forklift chassis. A housing with stripped or elongated bolt holes cannot maintain the alignment required for long transmission life. Kingstream supplies 4 clutch housing product lines for HELI and Doosan forklifts from 2 to 5 metric tons.

HELI Clutch Housings:
• 10063-11070 (OEM: 10063-11070) — Clutch housing for HELI FD20~30 forklifts with 490BPG diesel engine. Standard OEM replacement. Covers HELI 2-3 ton IC forklifts, one of the highest-volume forklift platforms in the world
• 10063-11070G (OEM: 10063-11070G) — EPENG/OEM brand mechanical clutch bell housing for HELI 2-3 ton forklifts. CE/ISO9001 certified. 22kg cast iron construction. 50,000 sets/month supply capacity. OEM/ODM/customized service. Anhui

Doosan Clutch Housings:
• BSX0005686 (D35S-2/D50C-2) — Doosan OEM clutch housing for D35S-2 (3.5 ton) and D50C-2 (5.0 ton) diesel forklifts. Automatic wave clutch cover replacement. 15kg. Designed for torque converter automatic transmissions where the housing must withstand up to 2.5× engine torque during stall conditions
• A233098 (D35S-2/D40S-2/D45S-2) — Doosan transmission clutch housing covering the 3.5-4.5 ton range. Cross-referenced to BSX0005686. Covers 3 models with a single part number — the most versatile Doosan bell housing in the product line

When to Replace Clutch Housings:
• Visible crack anywhere on the housing casting — especially radiating from a bolt hole or at the flange-to-body transition → The crack will propagate under cyclic loading. Welding cast iron is unreliable. Replace housing
• Bolt holes are elongated, stripped, or cracked — the housing has been operating with loose bolts → The alignment between engine and transmission cannot be restored. Replace housing and use new bolts with thread locker
• Housing-to-engine or housing-to-transmission flange face is warped beyond 0.15mm — measured with a machinist’s straightedge and feeler gauge → The housing will not seal correctly and may crack when bolts are torqued. Replace housing
• Pilot bearing bore or torque converter hub bore is worn, scored, or out-of-round → The input shaft alignment is compromised. The worn bore will destroy a new pilot bearing within hours. Replace housing and pilot bearing together
• Clutch release fork pivot boss is worn, cracked, or the release bearing guide tube is grooved → The clutch geometry is altered, causing uneven release and clutch drag. Some housings have replaceable guide tubes; if not, replace the entire housing

OEM Cross-Reference:

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Compatible: HELI FD20~30 2-3T, Doosan D35S-2/D40S-2/D45S-2/D50C-2 3.5-5T. Browse our transmission parts catalog.