Hyster N30XMXDR3 Safety Precautions Maintenance And Repair
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Hyster N30XMXDR3 Safety Precautions Maintenance And Repair

Hyster N30XMXDR3 Safety Precautions Maintenance And Repair

Lift cylinders
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LIFT CYLINDERS
N30XMXDR3, N45XMXR3 [B264]; N30FR; N40-45FR;
N50FA; R30ES; N30XMH, N30XMH
[C210];
2
N25XMDR3, N30/40XMR3 [C470]; N50XMA3 [C471];
N30XMDR3, N45XMR3 [G138]; W30-40ZA [B453];
W20-30ZR [B455]; W25-30-40ZC [B454];
V30ZMD [D210/E210]; N35ZDR, N45ZR [C264];
N30ZDR, N35-40ZR [D470]; N30ZDRS,
N35-40ZRS [A265]; W25-30ZA
[B495]
2
PART NO. 897446
4000 SRM 481

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  • Page 1 LIFT CYLINDERS N30XMXDR3, N45XMXR3 [B264]; N30FR; N40-45FR; N50FA; R30ES; N30XMH, N30XMH [C210]; N25XMDR3, N30/40XMR3 [C470]; N50XMA3 [C471]; N30XMDR3, N45XMR3 [G138]; W30-40ZA [B453]; W20-30ZR [B455]; W25-30-40ZC [B454]; V30ZMD [D210/E210]; N35ZDR, N45ZR [C264]; N30ZDR, N35-40ZR [D470]; N30ZDRS, N35-40ZRS [A265]; W25-30ZA [B495] PART NO. 897446...
  • Page 2 • Use the correct tools for the job. • Keep the tools clean and in good condition. • Always use HYSTER APPROVED parts when making repairs. Replacement parts must meet or exceed the specifications of the original equipment manufacturer. • Make sure all nuts, bolts, snap rings, and other fastening devices are removed before using force to remove parts.

  • Page 3: Table Of Contents

    Disassemble ..............................Assemble ................................ Free-Lift Cylinder Repair ..........................Disassemble ..............................Assemble ................................ Troubleshooting..............................This section is for the following models: N30XMXDR3, N45XMXR3 [B264]; N30FR; N40-45FR; N50FA; R30ES; N30XMH, N30XMH [C210]; N25XMDR3, N30/40XMR3 [C470]; N50XMA3 [C471]; N30XMDR3, N45XMR3 [G138]; W30-40ZA [B453];...
  • Page 4 "THE QUALITY KEEPERS" HYSTER APPROVED PARTS...

  • Page 5: General

    N30FR, N40/45FR, N50FA, R30ES, N30XMH, riages 4500 SRM 971 or Reach Carriages 4500 N30XMH , N25XMDR3, N30/40XMR3, N50XMA3, SRM 1196 for hydraulic cylinder repair instructions N30XMDR3, N45XMR3, N30XMXDR3, N45XMXR3, for the reach carriages. V30ZMD, W25-30ZA , W30-40ZA, W25-30-40ZC, Description The two-stage masts generally have two main lift oil raises the piston, the air within the upper part cylinders.

  • Page 6: Lowering Control Valve

    Description 4000 SRM 481 oil in the rod end of the lift cylinder. The hydraulic oil transfers through the check valve to the piston end of the free-lift cylinder. This action prevents hydraulic damage to the single lip seal and the wiper ring. See Figure 3.
  • Page 7 4000 SRM 481 Description The other type of lowering control valve (high pres- During lowering, oil from the lift cylinder moves the sure) uses these basic parts: (1) valve body, (2) orifice sleeve. The orifice sleeve moves away from the spring, (3) washer, (4) cylinder, (5) orifice sleeve, larger inner diameter area of the bore in the valve (6) plunger, and (7) main sleeve.

  • Page 8: Main Cylinder Repair

    Main Cylinder Repair 4000 SRM 481 Main Cylinder Repair DISASSEMBLE NOTE: To disassemble and repair a cylinder, the cylinder must be removed from the mast assembly. See the section Mast, Repair 4000 SRM 482 to remove the cylinders from the mast assembly. WARNING Use slings and a crane to handle and disassem- ble the lift cylinders of most lift trucks.

  • Page 9: Assemble

    4000 SRM 481 Main Cylinder Repair NOTE: Inspect the piston rod surface for scratches. • Use new O-rings, seals, and bearings from the kit. Check the area of the rod where the wiper ring con- Apply appropriate lubricant during assembly. tacts the rod.

  • Page 10: Free-Lift Cylinder Repair

    Free-Lift Cylinder Repair 4000 SRM 481 6. Engage the threads and tighten the retainer in CAUTION the shell to 340 to 410 N•m (251 to 302 lbf ft). A difficult and important step in assembling Use the correct spanner wrench. DO NOT hit cylinders is the correct installation of the seals the retainer with a hammer and driver.
  • Page 11 4000 SRM 481 Free-Lift Cylinder Repair CAUTION A difficult and important step in assembling lift cylinders is the correct installation of the seals. Most lift cylinder maintenance is caused by seal leaks. Special installation sleeves come in the seal kits. 1.

  • Page 12: Troubleshooting

    Troubleshooting 4000 SRM 481 Troubleshooting PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION No movement of lift cylin- No oil or not enough oil supply to lift Check oil level and add oil as needed. ders. cylinder. Hydraulic leaks, damaged hydraulic Repair hydraulic leaks. Replace pump, or damaged hydraulic pump pump or pump drive.
  • Page 14 TECHNICAL PUBLICATIONS 4000 SRM 481 4/08 (11/06)(10/06)(5/04)(4/03)(5/98)(4/97)(1/96)(12/95)(6/92) Printed in U.S.A.

This manual is also suitable for:

N45xmxr3B264N30frN40-45frN50faR30es ... Show all

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