This manual provides information and instructions on the maintenance and repair of the CLARK® Transmission.
This manual provides instructions for the maintenance and repair of the Clark CL550 series transmission, a 5-speed forward, 1-speed reverse unit. It details the transmission's design features, including constant mesh gears, helical gearing, and split-pin synchronizers, and specifies recommended lubricants and service intervals.
| Gear Configuration | 5-speed forward, 1-speed reverse |
|---|---|
| Gearing Type | Constant mesh and helical |
| Synchronizer Type | Split-pin synchronizer |
| Recommended Lubricant | Mil-L-2105C or API GL-5 |
| Initial Drain Interval | 1,000 miles |
| Highway Service Drain Interval | 24,000 miles or six months |
The preferred lubricant is Mil-L-2105C Extreme Pressure Lubricant or an API classification GL-5.
The oil should be drained after the first 1,000 miles of service, regardless of the type of service.
This is caused by the fact that the disengagement of the blockers requires relative rotation, which may not occur when the vehicle is at rest.
Inspect all rollers and balls for wear, chipping, or nicks to determine if any abnormal conditions exist.