Genuine SINOTRUK HOWO Countershaft Assembly Kit AZ2203030210 + AZ2203030209 – Heavy Duty Transmission Spare Parts
Product Description
Core Features
- OEM Matched: Direct replacement for HW19710/12 10-speed transmissions
- مادة: 20CrMnTi alloy steel with carburizing treatment (HRC 58-62)
- Precision: 0.01mm gear grinding tolerance (ISO 1328 Class 6)
Technical Parameters
| Specification |
قيمة |
| وزن |
18.5kg ±2% |
| Spline Teeth |
32ت (6mm module) |
| Bearing Fit |
φ85js6 (+0.011/-0.009مم) |
التوافق
- SINOTRUK HOWO T7H/A7 371-420HP models
- Works with 85W-90 GL-5 gear oil
1. نتعامل مع كل عميل كصديق لنا, التمسك بالمبدأ: مربح للجانبين ومزايا متبادلة ;
2. مجموعة متنوعة من الخيارات للمنتجات: جودة, الماركة, التعبئة والتغليف;
3. سنقوم بالرد عليك لاستفسارك في 24 ساعات.
4.المورد المهنية أجزاء ساينو تراك برفومانس
5. سنكون في الخدمة 24/24 ساعات في يوم العمل.
6. الحمار: سوف نقدم لك أفضل خدمة بعد البيع.
Pre-Installation Requirements
-
Essential Tools
- 200-400Nm digital torque wrench (calibrated within 3 الشهور)
- Bearing puller set (50-150mm range)
- Dial indicator with 0.001mm resolution
-
Consumables
- LOCTITE 574 flange sealant (100ml tube)
- Mobil SHC Gear 85W-140 lubricant
Installation Process
Step 1: Component Removal
- Drain transmission oil through 28mm hexagonal drain plug (minimum 15min drainage)
- Mark original shim positions with alignment punches (every 45°)
- Remove retaining rings using JIS V-32 circlip pliers
Step 2: Surface Preparation
- Clean mating surfaces with non-chlorinated brake cleaner
- Apply sealant in spiral pattern:
- 3mm continuous bead around bolt holes
- 5mm offset from oil channels
Step 3: Assembly Installation
| Component |
Torque Sequence |
Specification |
| M12 bolts |
85Nm → 105Nm → 120° angle |
Cross-tightening |
| Bearing nuts |
180Nm + 90° rotation |
Dynamic torque monitoring |
- Verify gear backlash: 0.10-0.15مم (measure at 3 positions 120° apart)
Post-Installation Verification
-
Leak Testing
- Conduct 30min pressure test at 400kPa (max allowable drop: 25KPA)
-
Functional Check
- Run through all gear ranges 50x at 1500rpm
- Monitor temperature rise: ≤65°C after 15min operation
Critical Warnings
- Replace all circlips (mandatory for warranty validation)
- Maintain ambient temperature between 15-35°C during installation
- Initial oil replacement required after 300km break-in period
