Product Description
SLAVE CYLINDER
Frequently Asked Questions
Q: What is the CR 77637 slave cylinder used for in electric lift trucks?
A: The CR 77637 slave cylinder is a hydraulic actuator component used in the lowering and load control systems of electric lift trucks. It converts hydraulic pressure into mechanical motion to control the mast descent and load positioning on equipment from manufacturers including Crown, Toyota, Raymond, and Yale.
Q: What are the core specifications for the CR 77637 slave cylinder?
A: The CR 77637 is a sealed hydraulic cylinder designed for electric lift truck systems. Verify your equipment model and serial range to confirm the exact bore diameter, rod size, and stroke length before ordering. Core functionality includes control of descent rate and load stability in standard and cold storage lift environments.
Q: What hydraulic fluid specification does the CR 77637 require?
A: The CR 77637 operates with standard ISO 32 or ISO 46 hydraulic fluid commonly used in lift truck systems. Do not substitute with ATF or other non-approved fluids, as this will cause seal failure and loss of operational pressure. Check your equipment manual for the exact fluid grade and viscosity required.
Q: How long does a CR 77637 slave cylinder typically last before seal failure?
A: Under normal operational conditions, the CR 77637 has a service life of 3 to 5 years before internal seals begin to degrade. Lifespan depends on hydraulic fluid contamination levels, temperature extremes, and cycle frequency. Contaminated fluid or exposure to extreme cold storage temperatures will reduce service life to 1 to 2 years.
Q: What are the warning signs that a CR 77637 slave cylinder needs replacement?
A: Common failure symptoms include slow descent speed, erratic load lowering, inability to hold a load position, external hydraulic fluid leaks around the rod seal, or spongy control lever response. If descent becomes sluggish or jerky, the internal piston seals are likely degraded and the cylinder should be replaced immediately.
Q: Which electric lift truck brands use the CR 77637 slave cylinder?
A: The CR 77637 fits multiple electric pallet jack and lift truck models from Crown, Toyota, Raymond, Yale, and similar OEM manufacturers. Verify your specific equipment model, year, and serial range before ordering to confirm fitment and compatibility.