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WPG 35275 Service Manual

Ac-voltage power system
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KEEP FOR FUTURE REFERENCE
SERVICE
MANUAL
INTENDED FOR USE BY SKILLED
TECHNICAL PROFESSIONALS • READ
AND UNDERSTAND BEFORE SERVICING
AC-VOLTAGE POWER SYSTEM
Stock number: 35275
Rev 3.1/6-22
1
908 W. Main • P.O. Box 368
Laurel, MT USA 59044
800-548-7341 (phone)
406-628-8231 (phone)
406-628-8354 (fax)
www.WPG.com
AC: #35275

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Summary of Contents for WPG 35275

  • Page 1 908 W. Main • P.O. Box 368 Laurel, MT USA 59044 800-548-7341 (phone) 406-628-8231 (phone) 406-628-8354 (fax) INTENDED FOR USE BY SKILLED www.WPG.com TECHNICAL PROFESSIONALS • READ AND UNDERSTAND BEFORE SERVICING AC-VOLTAGE POWER SYSTEM Stock number: 35275 Rev 3.1/6-22 AC: #35275...
  • Page 2 AC: #35275 Rev 3.1/6-22...

  • Page 3: Table Of Contents

    Replacing the Intake Valve and Sleeve O-Ring ..............12 Replacing the Exhaust Valve and Head O-Ring ..............12 Disassembling the Piston Assembly..................12 Replacing the Sleeve and Cup...................13 Installing the Valve Plate and Head...................13 ..............14 ACUUM WITCH DJUSTMENT ............15 INEAR CTUATOR DJUSTMENT REPLACEMENT PARTS................16 Rev 3.1/6-22 AC: #35275...

  • Page 4: Before Servicing Lifter

    Service must be performed whenever a deficiency is indicated by routine inspections or tests. Follow the “INSPECTIONS AND TESTS” section of the OPERATING INSTRUCTIONS. Any service warranted must be performed before resuming normal operation of the lifter. AC: #35275 Rev 3.1/6-22...

  • Page 5: Service Features

    1..Some lifters have a lever-style Vacuum Control Valve instead of a Vacuum Release Button. Note: A standard MRPT89AC is shown. 1..Some components may not be relevant or they may have a different location, depending on the lifter in question. Rev 3.1/6-22 AC: #35275...

  • Page 6: Service Procedures

    (see step 4 on next page) with mild soap and water; and skip to step 6. Carefully unscrew the element holder (item D in fig. 3A) and remove all internal parts (fig. 3B). AC: #35275 Rev 3.1/6-22...
  • Page 7 9) Perform the “Vacuum Test” to be certain the air filter does not leak (see “INSPECTIONS AND TESTS: T ” in the lifter's OPERATING INSTRUCTIONS). ESTING Note: Repeat this procedure for any other filter of the same type. Rev 3.1/6-22 AC: #35275...

  • Page 8: Ir Ilter Aintenance Oz Owl Ize

    (item 5) with mild soap and water; and skip to step 8. 4) Unscrew the baffle (item 4), and remove the element and deflector (item 2). 5) Discard the old element and bowl seal (item 5). AC: #35275 Rev 3.1/6-22...
  • Page 9 11) Perform the “Vacuum Test” to be certain the air filter does not leak (see “INSPECTIONS AND TESTS: T ” in the lifter's OPERATING INSTRUCTIONS). ESTING Note: Repeat this procedure for any other filter of the same type. Rev 3.1/6-22 AC: #35275...

  • Page 10: Vacuum Pump Maintenance − Model 0523

    Install a new gasket and reinstall the sound chamber. Then secure the sound chamber with the five bolts previously removed. 8) Replace the air filters. Then reinstall the O-rings and end caps. AC: #35275 Rev 3.1/6-22...

  • Page 11: Vacuum Pump Maintenance − Model 3032 Or 2032

    5) Place the new vanes in the rotor slots with the beveled edge in the correct orientation (see step 3). Note: Vanes may become damaged or broken if installed incorrectly. Rev 3.1/6-22 AC: #35275...
  • Page 12 8) Repeat step 7 with the face of the retainer plate. Use a clean, dry cloth to remove any dust from the retainer plate and reinstall it. 9) Reinstall the retainer bolts and tighten them to 28-36 in-lbs (3.1-4.1 N-m) of torque. AC: #35275 Rev 3.1/6-22...

  • Page 13: Vacuum Pump Maintenance − Model Mp27

     Valve Plate  Sleeve O-Ring  Intake Valve Kit (valve flapper, keeper and screw)  Cylinder Sleeve  Retainer Screw  Retainer Plate  Piston Cup  Nonstocked Item  Included in service kit #66179AM Rev 3.1/6-22 AC: #35275...

  • Page 14: Removing The Head And Valve Plate

    12) Remove the retainer screw (I) and discard it. Note the position of the recesses in the retainer plate (J) for reassembly. 13) Remove the cylinder sleeve (H), retainer plate (J) and piston cup (K). Discard the sleeve and cup. 14) Clean the retainer plate (J) and top of the piston rod. AC: #35275 Rev 3.1/6-22...

  • Page 15: Replacing The Sleeve And Cup

    20) Place the head (B) in the correct orientation on the valve plate (E), making sure the plate tabs fit in head notches. 21) Install the head screws (A) and tighten them with 55 in-lbs [6.2 N-m] of torque in a crisscross pattern. Rev 3.1/6-22 AC: #35275...

  • Page 16: Vacuum Switch Adjustment

    2..In order to observe lifter functions while vacuum is decreasing, it may be necessary to create a controlled leak in the vacuum system. 3..In order to test the adjustment accurately, release the vacuum pads completely before reattaching them to a test surface. AC: #35275 Rev 3.1/6-22...

  • Page 17: Linear Tilt Actuator Adjustment

    The brake is preset and should provide consistent braking for the tilt function. However, if the brake friction surfaces become worn (indicated by excessive drift), contact WPG for rebuilding. The limit switches, which control the stroke length, also are preset and should not need adjustment.

  • Page 18: Replacement Parts

    Vacuum Gauge – 1/8 NPT – CBM Type (for other models) 15650 360° Rotating Union – 1/4 NPT (for MR4-AC, MRPT89AC) See OPERATING INSTRUCTIONS for additional parts. ERVICE ONLY WITH IDENTICAL REPLACEMENT PARTS WPG.COM AVAILABLE AT OR THROUGH AN AUTHORIZED DEALER AC: #35275 Rev 3.1/6-22...

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