Category Archives: L2501

1. Attach the cylinder safety valve to injection nozzle tester with a safety valve setting adaptor. 2. Measurement the operating pressure of the cylinder safety valve. 3. If the operating pressure is not within the factory specifications, adjust by turning the adjusting screw (1). 4. After adjustment, tighten the lock nut (2) firmly. NOTE •… Read More »

1. Measurement the hydraulic arm shaft O.D. with an outside micrometer. 2. Measurement the bushing I.D. with a cylinder gauge or inside micrometer. 3. If the clearance exceeds the allowable limit. replace.  

1. Check the cylinder internal surface for scoring or damage. 2. Measure the cylinder I.D. with a cylinder gauge. 3. If the measurement exceeds the allowable limit, replace.  

1. Measure the side plate thickness with an outside micrometer. 2. If the thickness is less than the allowable limit, replace it.  

1. Measure the gear shaft O.D. with and outside micrometer. 2. Measure the bushing I.D. with and inside micrometer or cylinder gauge, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace the gear shaft and the bushings as a unit.  

1. Check for the scratch on the interior surface of the housing caused by the gear. 2. If the scratch reaches more than half the area of the interior surface of the housing, replace at pump assembly. 3. Measure the housing I.D. where the interior surface is not scratched, and measure the housing I.D. where… Read More »

1. Remove the plug (9), and draw out the spring (5) and the poppet (4). 2. Take out the valve seat (3). (When reassembling) • Take care not to damage the O-ring. •IMPORTANT After disassembling and assembling the relief valve, be sure to adjust the relief valve setting pressure.  

1. Loosen and remove the position control valve mounting screws. 2. Take out the position control valve (1). (When reassembling) • Take care not to damage the O-rings.