MultiStar Cold – Your Source for Bus Air Conditioner Parts
The Valeo TM65 Sight Glass is a high-quality replacement oil level inspection window designed for Valeo TM65 heavy-duty 14-cylinder swash plate compressors, widely used in bus and coach air conditioning systems. This critical component allows technicians to visually check the compressor oil level and condition, ensuring proper lubrication and preventing compressor damage .
Multistar Cold is your one-stop supplier for bus AC parts and transport refrigeration parts – original new and China-made options at competitive prices.
Valeo / OEM:
TM65 Sight Glass (part of compressor body assembly)
Related TM65 Service Parts:
O-Ring Set: Z0014430
Shaft Seal: Z0007461
Gasket Kit: Z0014427A
Front/Rear Valve Plate: Z0004775A052F
⚠️ Important Installation Notes
Based on Valeo TM65 service manual :
| Condition | Recommendation |
|---|---|
| Normal operation | Oil level should be visible within the sight glass range |
| Compressor stopped | Oil level can be accurately read |
| Low speed operation | Oil level inspection is reliable |
| High speed operation | Sight glass cannot be used – oil surface not visible due to refrigerant/oil mixture |
| Front lifting (bus rear application) | Oil level appears distorted – quantity appears lower but level is actually correct |
| Lateral inclination | One sight glass may appear full while the other appears empty |
Tip: A flashlight can help expose the oil surface – light up one sight glass to read the oil level at the opposite one .
📊 Technical Specifications
| Parameter | Specification |
|---|---|
| Compatible Compressor | Valeo TM65 |
| Type | Oil Level Sight Glass |
| Compressor Technology | Heavy Duty Swash Plate |
| Displacement | 635 cc / 38.75 in³ per rev |
| Number of Cylinders | 14 (7 double-headed pistons) |
| Refrigerant | HFC-134a |
| Oil | ZXL 100PG PAG Oil (1500 cc) |
| Oil Inspection | Two sight glasses (one on each side) |
🚛 Compatible Applications
| Application | Details |
|---|---|
| Bus & Coach AC | Valeo TM65 compressor overhaul |
| Compressor Models | TM65 |
| Vehicle Type | Large buses and coaches with TM65 air conditioning systems |
| Advantage | Benefit |
|---|---|
| Factory Direct | No middlemen – competitive pricing |
| Quality Focus | OEM-grade materials and testing standards |
| Fast Delivery | Ready stock and quick production turnaround |
| Technical Support | Expert assistance for fitment verification |
| Global Reach | Shipping to 50+ countries worldwide |
| Flexible MOQ | Low minimum order quantities |
Multistar Cold – Your one-stop supplier for bus AC parts, transport refrigeration parts, Thermo King parts, and Carrier Transicold parts. OEM-grade quality, competitive pricing, and global shipping from China.