Trunnion Shaft Bushing 125x115x78mm Bimetal Construction ISO9001 TS16949 Certified for ISUZU CXZ CYZ51K EXZ51K 6WF1 10PE1
| Inner Diameter: | 115 Mm | Outer Diameter: | 125 Mm |
| Height: | 78 Mm | Net Weight: | 1.1 Kg |
| Material: | Bimetal (steel Backing + Copper Alloy Layer) | Operating Temperature: | -40°C To +250°C |
| Engine Compatibility: | 6WF1 / 10PE1 | Installation Position: | Chassis Suspension System — Trunnion Shaft To Frame Connection |
| High Light: | Bimetal Construction Trunnion Shaft Bushing,125x115x78mm Dimensions Suspension Bushing,ISO9001 TS16949 Certified Chassis Bushing |
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The Trunnion Shaft Bushing with OEM numbers 1-51386004-0 / 1513860040 is a critical wear component in the chassis suspension system of ISUZU CXZ51K, CYZ51K, and EXZ51K heavy-duty trucks equipped with 6WF1 and 10PE1 diesel engines. This bushing is installed between the trunnion shaft and the frame, bearing dynamic loads from the leaf springs and chassis while providing smooth oscillating motion during vehicle operation.
| Part Number: | 1-51386004-0 1513860040 |
| Product Name: | Trunnion Shaft Bushing |
| Car Model: | CXZ CYZ51K EXZ51K |
| Engine Model: | 6WF1 10PE1 |
| Dimensions: | 125x115x78mm |
| Weight: | 1.1kg |
| Material: | Bimetal construction (steel backing + copper alloy layer) |
- Dimensional Verification: OD 125mm × ID 115mm × Height 78mm, fully matching OEM drawing dimensions
- Fitment Verified: Fits ISUZU CXZ51K, CYZ51K, CYZ51L, EXZ51K, CXZ81K chassis with engine codes 6WF1, 10PE1
- OEM Cross-Reference Verified: Replaces multiple OEM part numbers including 8-98081832-0, 8980818320, 9-51386026-0
- Material Verified: Bimetal construction suitable for high-load oscillating motion, operating temperature range -40°C to +250°C
- Quality System Certified: ISO9001 / TS16949 certified
Immediate inspection required if any of these symptoms are present:
- Metallic clunking or creaking noise from chassis during driving, especially over bumps or in turns
- Vehicle pulling to one side or reduced steering wheel self-centering
- Visible clearance or displacement between bushing outer diameter and housing bore
- Abnormal vibration in trunnion shaft area transmitting to cab floor
- Irregular tire wear (saw-tooth or wave pattern)
| Brand | Model | Chassis | Engine |
|---|---|---|---|
| ISUZU | CXZ | CXZ51K | 6WF1 |
| ISUZU | CYZ | CYZ51K | 6WF1 |
| ISUZU | CYZ | CYZ51L | 6WF1 |
| ISUZU | EXZ | EXZ51K | 6WF1 |
| ISUZU | CXZ | CXZ81K | 10PE1 |
Important: Some CXZ/CYZ chassis have different suspension configurations. Please provide VIN or chassis number to confirm bushing specifications and quantity before ordering.
| QC Item | Verification Method |
|---|---|
| Dimensional inspection | CMM measurement (OD/ID/height) against OEM drawing |
| Material analysis | Spectrometer testing of copper alloy layer composition and steel backing |
| Hardness testing | Surface hardness test of copper alloy layer to ensure wear resistance |
| Metallographic examination | Bond strength testing at copper-steel interface |
| Surface quality | Visual and magnified inspection for cracks, porosity, inclusions |
| Final inspection | 100% factory dimensional and visual inspection |
IMPORTANT: The trunnion shaft bushing is a suspension safety component. Installation requires a dedicated press tool. Hammering is strictly prohibited to avoid damaging the bushing or housing bore.
- Park vehicle on level ground, support frame with jack and safety stands
- Remove trunnion shaft and related connecting components
- Extract old bushing using a dedicated puller tool, clean housing bore
- Inspect bore dimensions and surface condition, confirm no damage
- Press new bushing into bore using dedicated press tool, ensure fully seated
- Install trunnion shaft, torque connecting bolts to specification
- Road test to verify suspension operation and noise
Inspect bushing wear and clearance every 80,000 km or 12 months; preventive replacement recommended every 160,000 km. Replace immediately if abnormal noise or excessive clearance is detected.
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