T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
| Quantity: | |
|---|---|
WG9731520041 WG9731522011
Sinotruk HOWO
| Parameter | Specification |
|---|---|
| Part Number | WG9731522011 |
| Designation | Front Left Leaf Spring Assembly (Complete Unit) |
| Material | High-strength alloy spring steel: 60Si2Mn or 50CrVA, meeting 2025 OEM material standards |
| Number of Leaves | Standard: 10 pieces (multi-leaf, unequal length) Optional: Reinforced versions with variable thickness (e.g., 14mm for mining use) |
| Width per Leaf | 90 mm (±0.5 mm) |
| Thickness per Leaf | 13 mm (standard); up to 14 mm in heavy-duty variants |
| Overall Dimensions (Approx.) | Length: ~175 cm Width: ~9 cm Height (arc height): ~80 cm (including arch curvature) |
| Center Bolt Included | Yes – factory-installed and torqued |
| Bushings & Sleeves | Inner rubber-metal composite bushings with lubrication channel |
| Lubrication Point | Grease nipple (Zerk fitting) on shackle end for periodic greasing |
| Weight (Net) | Approx. 68.97 kg (may vary slightly by production batch) |
| Surface Treatment | Anti-corrosion coating + protective paint (resistant to salt spray, dust, and moisture) |
| Manufacturing Process | Hot-formed, quenched & tempered, shot-peened for fatigue resistance |
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Confirm correct side: Left-hand (LH) only.
Inspect new assembly for damage, deformation, or missing components.
Check that center bolt is securely fastened and not protruding abnormally.
Verify matching U-bolts, plates, and brackets are available and undamaged.
Lift the Vehicle Safely: Use proper jack stands or lift; never work under unsupported weight.
Remove Old Spring: Loosen U-bolts, disconnect shackle, remove center pin if necessary.
Position New Spring: Align center hole with front axle seat. Ensure curled eyes face correct direction (front/rear orientation matters).
Install U-Bolts: Place top plate over spring pack, install U-bolts around axle.
Torque U-Bolts: Tighten crosswise to manufacturer specification (typically 350–400 N·m, confirm in service manual).
Reconnect Shackle & Bushings: Insert shackle pin, apply grease before insertion.
Lower Vehicle Gradually: Allow suspension to settle under its own weight.
Final Torque Check: After lowering, re-tighten U-bolts after driving first 500 km (310 miles).
