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SINOTRUK HOWO T7 HOWO TX Balance Shaft Cover Shell Cover AZ9925521311
Commonly stocked associated components
1. Oil seals: Rotary shaft oil seals for the balance shaft (to prevent bearing lubricant leakage).
2. Gaskets: Paper or rubber gaskets for the balance shaft cover plate.
3. Fasteners: Hexagon bolts for securing the cover plate (typically high-strength bolts, grade 10.9 or 12.9).
HOWO Balance Shaft End Repair BOM (Per Side)
| No. | OE Part No. | English Part Name | Standard Qty | Part Type | Maintenance Remarks & Replacement Justification |
|---|---|---|---|---|---|
| 1 | AZ9925521311 | Balance Shaft Cover | 1 | Core Structure | Main item for replacement. Must be replaced if the original cover is deformed, cracked, or has stripped bolt holes. |
| 2 | WG9014520002 (or variant) | Balance Shaft Cover Gasket | 1 | Sealing Consumable | Mandatory Replacement. This paper/rubber gasket is a one-time-use item that breaks upon disassembly. Use with sealant during reassembly to prevent gear oil leaks. |
| 3 | WG9231520021 (or MAN equivalent) | Balance Shaft Oil Seal | 1 | Core Sealing | Strongly Recommended. The primary rubber oil seal for the balance shaft. It degrades over time due to high heat; failing to replace it often causes oil slinging. |
| 4 | Q150B1235 (subject to measurement) | Hexagon Bolt (Grade 10.9) | 6 or 8 | Fastener | Recommended Replacement. Chassis parts face continuous impact. Replacing with new high-strength genuine bolts (Grade 10.9 or higher) is recommended. |
| 5 | Q40312 / Q40112 | Spring Washer / Flat Washer | 6 or 8 | Fastener | Replace as a set with bolts. Prevents the cover bolts from backing out or loosening due to severe road vibrations and heavy jolts. |
| 6 | AZ9631520017 | Balance Shaft Round Nut | 1 | Locking Device | Inspect and Replace. Used to lock the balance shaft bearing. If the threads are damaged or stripped during disassembly, replace with a new one immediately. |
| 7 | AZ9631520018 | Lock Washer / Stop Washer | 1 | Locking Device | Mandatory Replacement. A one-time-use anti-vibration lock washer that bends over the round nut. It becomes brittle and snaps easily once unfolded. |
| 8 | AZ9925521250 (general ref) | Balance Shaft Bushing | 1 | Load Bearing | Inspect Condition. If inspection after teardown reveals abnormal wear, pitting, or excessive play in the bearings or composite bushing, press-fit a new assembly. |
| 9 | GL-5 85W-90 | Heavy-duty Gear Oil | Approx. 2-3L | Lubricant | Mandatory Replenishment. Gear oil will inevitably drain out when removing the cover. The assembly must be refilled to the standard oil level plug. |
DETAILS
| DESCRIPTION | Balance Shaft Cover Shell Cover | PART NUMBER | AZ9925521311 |
| WEIGHT | 2kg | VOLUME |
185 mm × 185 mm × 42 mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CHASSIS |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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