Parts & service
Brake Model T-450
Manufactured by Norman G Clark under licence since 1962.
On this page: Brake Bushes Accessories Spare parts Repair kits Air connections Troubleshooting
T-450
QD Bush
| NGC part no. | Description |
|---|---|
| AG4525 | QD Bush – 25mm Bore |
| AG4528 | QD Bush – 28mm Bore |
| AG4529 | QD Bush – 1-1/4” Bore |
| AG4530 | QD Bush – 1” Bore |
| BJ1005 | QD Bush – Pilot Bore – JA Type |
T-450
Accessories
| NGC part no. | Description | Nexen part no. |
|---|---|---|
| A817700 | Brake Guard | 817700 |
T-450
Spare Parts
| Item | NGC part no. | Description | Qty | In repair kit |
|---|---|---|---|---|
| 1 | AG11657 | Hub/Friction Disc | 1 | |
| 2 | AG11658 | Piston | 1 | |
| 3 | AG11659 | Piston Plate | 1 | |
| 4 | AG11660 | Air Chamber | 1 | |
| 5 | AG11771 | Friction Facing (Split) | 1 | Yes |
| 6 | AG05693 | Shoulder Bolts | 3 | Yes |
| 7 | AG1007 | Compression Springs | 3 | Yes |
| 8 | AG1014 | Ball Bearing | 1 | Yes |
| 9 | AG1012 | Retaining Ring (External) | 1 | |
| 10 | AG00432 | Retaining Ring (Internal) | 1 | |
| 11 & 12 | AG4510 | O’Ring Seal Set | 1 | Yes |
| 13 | AG00836 | Dowel Pins | 3 | |
| 14 | AC1255 | Brass Screw (Countersunk) | 6 | Yes |
T-450
Air Connections
All Nexen pneumatically actuated devices require clean and dry air, which meet or exceeds ISO 8573.1:2001 Class 4.4.3 quality.
Note
For quick response, Nexen recommends a quick exhaust valve and short air lines between the Control Valves and the unit. Align the air inlet ports to a down position to allow condensation to drain out of the air chambers of the product.
Caution
Low air pressure will cause slippage and overheating. Excessive air pressure will cause abrupt starts and stops, reducing product life.
The following is a common air supply scheme used with this product. This is an example and not an all-inclusive list. All air circuits to be used with this product must be designed following ISO-4414 guidelines.
T-450
Troubleshooting Guide
| Symptom | Possible cause | Solution |
|---|---|---|
| Failure to engage | Low or lack of air pressure | Replace the control valve |
| Internal contamination or corrosion | Align the exhaust port to the six o’clock down position to allow condensation to drain out of the exhaust port | |
| Failure to disengage | Broken Compression Springs | Replace the Compression Springs |
| Air not being exhausted due to a control valve malfunction | Check for control valve malfunction and replace it if necessary | |
| Check for air leaks in the air lines and around the O-rings Seals. Replace the air lines or O-ring Seals if necessary | ||
| Internal contamination or corrosion | Align the exhaust port to the six o’clock down position to allow condensation to drain out of the exhaust port | |
| Loss of Torque | Worn or dirty Friction Facings | Replace the Friction Facings |