Hyster N25XMDR Manual
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Hyster N25XMDR Manual

Hyster N25XMDR Manual

Master drive unit
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0$67(5 '5,9( 81,7
N25/30XMDR, N30/40/45XMR, N50XMA [E138];
N30XMDR3, N45XMR3 [G138]; N25XMDR2,
N30/40XMR2 [B470]; N50XMA2 [B471];
N25XMDR3, N30-40XMR3 [C470];
N50XMA3 [C471]; N30XMDR2, N45XMR2 [F138];
N30XMXDR, N45XMXR [A264]; N30XMXDR3,
N45XMXR3 [B264]
PART NO. 897861
630 SRM 613

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Summary of Contents for Hyster N25XMDR

  • Page 1 0$67(5 '5,9( 81,7 N25/30XMDR, N30/40/45XMR, N50XMA [E138]; N30XMDR3, N45XMR3 [G138]; N25XMDR2, N30/40XMR2 [B470]; N50XMA2 [B471]; N25XMDR3, N30-40XMR3 [C470]; N50XMA3 [C471]; N30XMDR2, N45XMR2 [F138]; N30XMXDR, N45XMXR [A264]; N30XMXDR3, N45XMXR3 [B264] PART NO. 897861 630 SRM 613...
  • 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 ..............................Troubleshooting ............................. This section is for the following models: N25/30XMDR, N30/40/45XMR, N50XMA [E138]; N30XMDR3, N45XMR3 [G138]; N25XMDR2, N30/40XMR2 [B470]; N50XMA2 [B471]; N25XMDR3, N30-40XMR3 [C470]; N50XMA3 [C471]; N30XMDR2, N45XMR2 [F138]; N30XMXDR, N45XMXR [A264]; N30XMXDR3, N45XMXR3 [B264] ©2002 HYSTER COMPANY...

  • Page 5: Hfk300 And 400 Master Drive Unit

    Use the correct tool to avoid damage. The HFK300 is used on the N30XMR, N30XMR2, N40XMR, N40XMR2, N25XMDR, N25XMDR2, N50XMA, and N50XMA2 models. The HFK400 is used on the N45XMR, N45XMR2, N30XMDR, N30XMDR2, N30XMXDR, and N45XMXR models.

  • Page 6: Drive Unit Maintenance And Repair

    HFK300 and 400 Master Drive Unit 630 SRM 613 DRIVE UNIT MAINTENANCE AND REPAIR Remove WARNING The lift truck and components are heavy. Be sure that all lifting devices (hoists, ca- bles, chains, slings, etc.) are suitable and of adequate capacity to lift the lift truck or component.

  • Page 7: Install

    630 SRM 613 HFK300 and 400 Master Drive Unit 7. Loosen the lock nut at the chain anchor for the 3. Hold the MDU in the vertical position through steering chain. Remove the capscrew at the the hole in the plate. Do NOT put any part of chain anchor.

  • Page 8: Disassemble

    HFK300 and 400 Master Drive Unit 630 SRM 613 9. Install the battery and close the drive unit com- 3. The upper housing is retained to the lower hous- partment doors. Install the electrical compart- ing with two dowel pins. Use a plastic hammer ment cover.

  • Page 9: Assemble

    630 SRM 613 HFK300 and 400 Master Drive Unit the sets can be installed in the correct position CAUTION during assembly. Measure the distance between Keep all shim sets together and labeled for cor- the edge of the case and the inner seal ring at the rect location and installation during assembly.
  • Page 10 HFK300 and 400 Master Drive Unit 630 SRM 613 Figure 5. Master Drive Unit Parts...
  • Page 11 630 SRM 613 HFK300 and 400 Master Drive Unit Legend for Figure 5 1. CAPSCREW 13. DOWEL PIN 25. CAPSCREW 2. CENTERING RING 14. PINION GEAR 26. SPECIAL WASHER 3. CAPSCREW 15. LOCK NUT 27. RING GEAR AND PINION 4. WASHER 16.
  • Page 12 HFK300 and 400 Master Drive Unit 630 SRM 613 Figure 6. Master Drive Unit Parts (A264)
  • Page 13 The procedure below specifies the use of a spe- cial measuring tool (Hyster P/N 2036120) and a spe- cial clamping tool (Hyster P/N 2036121). The mea- suring tool can be fabricated, if desired, as follows: Make a bushing to fit the bore of the lower pinion shaft bearing.
  • Page 14 HFK300 and 400 Master Drive Unit 630 SRM 613 NOTE: THERE ARE TWO NUMBERS STAMPED ON THE BEVEL PINION SHAFT. THERE ARE ALSO TWO NUMBERS STAMPED ON THE BEVEL GEAR. ONE NUMBER ON EACH PART IS THE SET NUMBER. THESE NUMBERS MUST BE THE SAME.
  • Page 15 630 SRM 613 HFK300 and 400 Master Drive Unit 1. SPACER BUSHING 1. BEARING CUP Figure 10. Shim Measurement 2. WHEEL SHAFT INNER BEARING BORE SHIM 11. Add 0.02 mm (0.00079 in.) to the value of dimen- 3. WHEEL SHAFT OUTER BEARING BORE SHIM sion A and install a shim set equal to that sum into the bearing bore.
  • Page 16 HFK300 and 400 Master Drive Unit 630 SRM 613 Wait to grease the bearing until after the preload adjustments are performed. NOTE: After the proper backlash has been obtained, grease the seal ring and fill the outer bearing cone using Shell Alvania R3 grease prior to assembly. 23.
  • Page 17 630 SRM 613 HFK300 and 400 Master Drive Unit between 0.03 to 0.11 mm (0.0012 to 0.0043 in.). the ink on the coated teeth. Slight deviations Backlash is adjusted by adding or removing from the ideal tooth contact pattern are admis- shims beneath the inner wheel bearing cup.
  • Page 18 HFK300 and 400 Master Drive Unit 630 SRM 613 30. Check the wheel bearing clearance. Press down 34. Adjust the dial indicator to zero. Turn the wheel on the wheel shaft by hand and rotate it several shaft in both directions to measure any deflec- times.
  • Page 19 630 SRM 613 HFK300 and 400 Master Drive Unit properly installed. See Figure 14. Install the a. The caulked cover plate on the trunnion shims and outer bearing cup. bearing has separated. Check visually. 39. Coat the entire surface of the inner splines of the b.

  • Page 20: Troubleshooting

    HFK300 and 400 Master Drive Unit 630 SRM 613 23 N•m (17 lbf ft). Tighten the 10 mm capscrews to 46 N•m (34 lbf ft). Install the socket head capscrews and the washers and nuts. Tighten the nuts to 23 N•m (17 lbf ft). 51.
  • Page 21 630 SRM 613 HFK300 and 400 Master Drive Unit PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION Oil leaks at the wheel shaft. Shaft seal incorrectly mounted or Replace shaft seal. damaged. Surface of axle shaft damaged. Replace axle shaft. Oil leaks at the filler plug or Dirt between sealing ring and hous- Clean sealing ring and housing.

  • Page 22: Gk Master Drive Unit

    GK Master Drive Unit 630 SRM 613 GK Master Drive Unit GENERAL Verify the type of MDU by inspecting the hous- ing. This section contains a description, repair, and ad- justment procedures for the parts of the GK master CAUTION drive unit (MDU) used on the narrow aisle lift trucks.

  • Page 23: Description

    630 SRM 613 GK Master Drive Unit DESCRIPTION The GK MDU is vertically installed in the truck and allows an effective utilization of space. The com- pact, one-piece housing is made of high-duty nodular iron; thus having a high rigidity and optimum guid- ing precision.

  • Page 24: Install

    GK Master Drive Unit 630 SRM 613 5. Open the drive unit compartment door and fas- 1. Use a crane and chain or sling with appropri- ten the door so that it is fully open. Put a pan ate capacity to lift the frame. Lift the frame for under the MDU drain plug and remove the plug.

  • Page 25: Pivoted Connection - Geared Steering

    630 SRM 613 GK Master Drive Unit 2. Assemble the electric motor into the centering Legend for Figure 20 seat of the steering bearing and cautiously join 1. BOREHOLES 3. STEERING it with the splined hub connection of the drive 2.

  • Page 26: Troubleshooting

    GK Master Drive Unit 630 SRM 613 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION Lift truck will not move. Traction motor not operating. Repair or replace traction motor. Damaged gears or bearings. Replace gears or bearings. Master drive unit makes Insufficient lubricant or incorrect lu- Lubricate as needed.

  • Page 28: Technical Publications

    TECHNICAL PUBLICATIONS 630 SRM 613 2/02 (5/99)(5/98)(1/96) Printed in U.S.A.

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