Meyer E-58H Service Manual
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Meyer E-58H Service Manual

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FORM NO. 1-822
August 2005
Price: $4.25
ELECTRO-LIFT
E-58H, E-78 & E-88
power unit
service manual
Meyer Products LLC
Diamond Equipment
18513 Euclid Ave. • Cleveland, OH 44112-1084
6 Angell Lane• Damariscotta, ME 04543-9720
Phone (216) 486-1313
Phone (207) 563-2227
email•warranty@meyerproducts.com
www.diamondplow.com • email info@diamondplow.com
© 2005 Printed in the U.S.A.

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  • Page 1 FORM NO. 1-822 August 2005 Price: $4.25 ELECTRO-LIFT E-58H, E-78 & E-88 power unit service manual Meyer Products LLC Diamond Equipment 18513 Euclid Ave. • Cleveland, OH 44112-1084 6 Angell Lane• Damariscotta, ME 04543-9720 Phone (216) 486-1313 Phone (207) 563-2227 email•warranty@meyerproducts.com...
  • Page 2 THEORY OF OPERATION ........DIAGNOSIS ............. REPAIR PROCEDURE ..........ELECTRONIC TROUBLESHOOTING ..... SPECIFICATIONS ........... Meyer Products LLC reserves the right, under its continuing product improvement program, to change construction or design details, specifications and prices without notice or without incurring any obligation.
  • Page 3 SECTION 0 - GENERAL INFORMATION AND MAINTENANCE CONTENTS GENERAL INFORMATION ............ • ............ ODEL DENTIFICATION • ODEL DENTIFICATION AND ..........ERIAL UMBER OCATION • ............ OTOR DENTIFICATION MAINTENANCE ..............• ..........ENERAL AINTENANCE • ..............LEANLINESS • ........... EHICLE LECTRICAL YSTEM •...
  • Page 4 GENERAL INFORMATION Model Identification MAINTENANCE The E-58H, E-78 & E-88 unit is an electrically powered The following maintenance information is intended hydraulic mechanism specifically designed for use with as a basic guide for providing the E-58H, E-78 & the Meyer E-Z Mount Xpress and E-Z Mount Plus and E-88 unit with the proper service and care.
  • Page 5 M-2 Flushing Fluid, or a (Napthenic) based cleaner that is wax free. Refill E-58H, E-78 & E-88 unit with M-1 Fluid by fully retracting lift rod (Ram) and filling reservoir to 1-1/2 “ below the filler hole. Fill and bleed hoses and Power...

  • Page 6: Table Of Contents

    SECTION 1 - GENERAL DESCRIPTION AND THEORY OF OPERATION CONTENTS GENERAL DESCRIPTION ..................... THEORY OF OPERATION ....................• F E-58H, E-78 & E-88 ................... UNCTIONS • E ..................6-15 LECTRICAL AND HARTS •• E-88 ........................6-11 •• E-78 ........................12-15 ••...

  • Page 7: General Description

    GENERAL DESCRIPTION Additional components which control and supply electrical current to the E-58H, E-78 & E-88 units are E-58H, E-78 & E-88 unit is an electrically powered and an operator controlled Touchpad (E-58H only), RCM electrically controlled hydraulic mechanism specifically (Remote Control Module);...

  • Page 8: Electrical And Flow Charts

    FIGURE 1-1...
  • Page 9 FIGURE 1-2...
  • Page 10 FIGURE 1-3...
  • Page 11 FIGURE 1-4...
  • Page 12 FIGURE 1-5 -10-...
  • Page 13 FIGURE 1-6 -11-...
  • Page 14 FIGURE 1-7 -12-...
  • Page 15 FIGURE 1-8 -13-...
  • Page 16 FIGURE 1-9 -14-...
  • Page 17 FIGURE 1-10 -15-...

  • Page 18: Electro Lift® Unit Components

    Under a condition, such as when a hydraulic cylinder The basic operating principles of the hydraulic pump used in the E-58H, E-78 & E-88 units are quite is extended to the end of its stroke, eliminating additional space for the pressurized hydraulic oil to simple.

  • Page 19: Coil

    “C” Solenoid Valve E-58H & E-78 only the winding, which consists of numerous turns The “C” Solenoid valve is used on the E-58H & of copper wire. The flow of current through the E-78 hydraulic unit for power angling. The “C”...

  • Page 20: Check Valves

    In the E-58H, E-78 & E-88 a pump check valve is used The crossover relief valve is factory set to the specified to prevent hydraulic fluid from leaking back through pressure of 3800 P.S.I.
  • Page 21 SECTION 2 - DIAGNOSIS CONTENTS E-88 E-58H E-78 GENERAL INFORMATION TESTING TIPS “RAISE” Troubleshooting “LEAK DOWN” Troubleshooting “LOWER” Troubleshooting “ANGLE LEFT” Troubleshooting “ANGLE RIGHT” Troubleshooting “WILL NOT HOLD ANGLE” Troubleshooting “MOUNTING” Troubleshooting “DIS-MOUNTING” Troubleshooting -19-...
  • Page 22 6. Pump pressure can be measured at an angle hose (note pressure at full angle) or in the pressure filter port (an adaptor is necessary for the filter port). Note: The E-88 Unit has a non adjustable pressure relief valve. 7. Flush the complete system including unit, hoses and power angling rams with Meyer Hydra-Flush™ Fluid M-2. -20-...
  • Page 23 E-88 ONLY -21-...
  • Page 24 E-88 ONLY -22-...
  • Page 25 E-88 ONLY -23-...
  • Page 26 E-88 ONLY -24-...
  • Page 27 E-88 ONLY -25-...
  • Page 28 DIAGNOSTIC FLOW CHART FOR E-58H & E-78 Unit These charts are intended to be used as an aid in diagnosing problems on the E-58H & E-78 unit. They are not a substitute for factory traini IMPORTANT: Maintenance and repairs must be performed with the moldboard on the ground.
  • Page 29 E-78 ONLY -27-...
  • Page 30 E-78 ONLY -28-...
  • Page 31 E-78 ONLY -29-...
  • Page 32 E-78 ONLY -30-...
  • Page 33 E-58H ONLY -31-...
  • Page 34 E-58H ONLY -32-...
  • Page 35 E-58H ONLY -33-...
  • Page 36 E-58H ONLY -34-...
  • Page 37 E-58H Wiring E-78 & E-88 Wiring -35-...
  • Page 38 ® . Exploded View ............... Parts Breakdown ..............Disassembly Photos .............. 40-59 40-59 Reassembly Photos ............... 59-69 59-69 CROSSOVER RELIEF VALVE E-58H, E-78 & E-88 Disassembly ................62-63 Reassembly ................64-67 BRUSH REPLACEMENT Iskra Brush Replacement ............SPECIFICATIONS ................ -36-...

  • Page 39: General Information

    E-88. Figure 3-2is an exploded NOTE: Do not disassemble pump assembly. view which applies to the E-58H & E-78. It should be used as the primary reference for proper reassembly. 1. Remove motor as shown in Figures 3-13 and Where necessary, this section includes additional 3-14 (page 42).

  • Page 40: E-58H

    E-88 Exploded View FIGURE 3-1 E-58H & E-78 Exploded View FIGURE 3-2 -38-...

  • Page 41: Parts Breakdown

    Parts indented are included in assembly under which they are indented. 15974 15974 • Kit-Crossover Valve *Parts included in Master Seal Kit Part No. 15969 (E-58H & E-78), 15978 (E-88) •• O-ring Basic Seal Kit Part No. 15254 •• O-ring Pump Relief Valve @ 2000 + 50 P.S.I.

  • Page 42: Disassembly Photos

    DISASSEMBLY - E-78 & E-88 FIGURE 3-3 FIGURE 3-4 Remove two phillips head screws from the front cover. Remove three phillips head screws from the rear cover. FIGURE 3-5 FIGURE 3-6 Carefully press in the four tabs holding the front and rear Remove two 1/4”...
  • Page 43 DISASSEMBLY - E-78 & E-88 FIGURE 3-7 FIGURE 3-8 Remove two 1/4” bolts using a 7/16” Socket or wrench. Using a 1/2” Socket or Wrench remove the two bolts holding Retain Spacer Plate between bracket and block. the positive and negative wires to the motor. FIGURE 3-9 FIGURE 3-10 Gently pull up on electronic framing until coil wire plugs are...
  • Page 44 DISASSEMBLY - ALL MODELS FIGURE 3-11 FIGURE 3-12 To drain oil from the unit, remove the drain plug using a Drain Plug removed. 11/16” wrench. FIGURE 3-13 FIGURE 3-14 To replace the motor remove the two cap screws, use a Hold the motor parts together while removing it from the 10mm hex socket.
  • Page 45 DISASSEMBLY - ALL MODELS FIGURE 3-15 FIGURE 3-16 To remove the pump, Use a 1/2” hex socket on the three Pump removed from the unit base. locknuts. The studs usually unscrew with the nuts. E-88 ONLY E-88 ONLY FIGURE 3-17 FIGURE 3-18 Remove the “A”...
  • Page 46 DISASSEMBLY - E-88 ONLY FIGURE 3-19 FIGURE 3-20 The “A” Cartridge is removed using a 7/8” hex deep The “A” Cartridge is removed. Clean by soaking cartridge socket. in cleaning solvent. FIGURE 3-21 FIGURE 3-22 Remove the “B” Coil. The “B” Cartridge is removed using a 7/8” hex deep socket.
  • Page 47 DISASSEMBLY - E-88 ONLY FIGURE 3-23 FIGURE 3-24 The “B” Cartridge is removed. Clean by soaking cartridge A magnetic probe is extremely useful for removal of small in cleaning solvent. valve parts. Use a magnet to retrieve the “B” Check Valve Body.
  • Page 48 DISASSEMBLY - E-88 ONLY FIGURE 3-27 FIGURE 3-28 Remove the “C” Coil. The “C” Cartridge is removed using a 7/8” hex deep socket. FIGURE 3-29 FIGURE 3-30 The “C” Cartridge is removed. Clean by soaking cartridge Remove the “D” Coil. in cleaning solvent.
  • Page 49 DISASSEMBLY - E-88 ONLY FIGURE 3-31 FIGURE 3-32 The “D” Cartridge is removed using a 7/8” hex deep The “D” Cartridge is removed. Clean by soaking cartridge socket. in cleaning solvent. FIGURE 3-33 FIGURE 3-34 Remove the “E” Coil. The “E” Cartridge is removed using a 7/8” hex deep socket.
  • Page 50 DISASSEMBLY - E-88 ONLY FIGURE 3-35 FIGURE 3-36 The “E” Cartridge is removed. Clean by soaking cartridge Use a 15/16” hex deep socket to remove the P.O. Check in cleaning solvent. valve assembly used for angling. FIGURE 3-37 FIGURE 3-38 Remove the P.O.
  • Page 51 DISASSEMBLY - E-88 ONLY FIGURE 3-39 FIGURE 3-40 Use a 15/16” hex deep socket to remove the P.O. Check Use a 15/16” hex deep socket to remove the P.O. Check valve assembly from the bottom of the valve block. Clean valve assembly used for mount/dismount.
  • Page 52 DISASSEMBLY - E-88 ONLY FIGURE 3-43 FIGURE 3-44 Use a 15/16” hex deep socket to remove the P.O. Check Use a 7/8” wrench or socket to remove filter plug. valve assembly from the bottom of the valve block. Clean by soaking Check valve in cleaning solvent. FIGURE 3-45 FIGURE 3-46 Remove the Filter.
  • Page 53 DISASSEMBLY - E-58H & E-78 ONLY FIGURE 3-47 FIGURE 3-48 Remove the “A” Coil using your hand or carefully use Coil removed from the “A” Cartridge. pliers. FIGURE 3-49 FIGURE 3-50 The “A” Cartridge is removed using a 7/8” hex deep The “A”...
  • Page 54 DISASSEMBLY - E-58H & E-78 ONLY FIGURE 3-51 FIGURE 3-52 Remove the “B” Coil. The “B” Cartridge is removed using a 7/8” hex deep socket. FIGURE 3-53 FIGURE 3-54 The “B” Cartridge is removed. Clean by soaking cartridge Use a 7/8” wrench or socket to remove the “B” Check in cleaning solvent.
  • Page 55 DISASSEMBLY - E-58H & E-78 ONLY FIGURE 3-55 FIGURE 3-56 Remove “B” Check Valve Nut. Retrieve the “B” Check Valve Body. FIGURE 3-57 FIGURE 3-58 Remove the “B” Check Valve Poppet. Retrieve the “B” Check Valve Spring. -53-...
  • Page 56 DISASSEMBLY - E-58H & E-78 ONLY FIGURE 3-59 FIGURE 3-60 Remove the “C” Coil. The “C” Cartridge is removed using a 7/8” hex deep socket. FIGURE 3-61 FIGURE 3-62 The “C” Cartridge is removed. Clean by soaking cartridge Use a 15/16” hex deep socket to remove the P.O. Check in cleaning solvent.
  • Page 57 DISASSEMBLY - E-58H & E-78 ONLY FIGURE 3-63 FIGURE 3-64 Remove the P.O. Check valve assembly. Clean by soaking Remove the P.O. Pilot Piston & Spring underneath Piston. Check valve in cleaning solvent. FIGURE 3-65 FIGURE 3-66 Use a 15/16” hex deep socket to remove the P.O. Check Remove the P.O.
  • Page 58 DISASSEMBLY - E-58H & E-78 ONLY FIGURE 3-67 FIGURE 3-68 Use a 7/8” wrench or socket to remove filter plug. Remove Filter Plug. FIGURE 3-69 FIGURE 3-70 Remove the Filter. Clean by soaking Filter in cleaning Use a 1/4” hex key or Allen Socket to remove the four valve solvent.
  • Page 59 DISASSEMBLY - ALL MODELS FIGURE 3-71 FIGURE 3-72 Use a 1/4” hex key or Allen Socket to remove pilot valve Use a 11/16 Wrench or Socket to remove Crossover Relief plug. Valve. FIGURE 3-73 FIGURE 3-74 Remove Crossover Relief Valve. There is one filter on the E-78 and E-88 base assembly.
  • Page 60 DISASSEMBLY - ALL MODELS FIGURE 3-76 FIGURE 3-75 Before removing ram and piston assembly, extend rod fully. Filters removed; soak in kerosene before reassembling. This drains out remaining oil in cylinder. FIGURE 3-77 FIGURE 3-78 When disassembling the reservoir-cylinder assembly use a Cover is removed from reservoir using a large screw driver 1/2”...

  • Page 61: Reassembly Photos

    DISASSEMBLY - ALL MODELS FIGURE 3-79 FIGURE 3-80 Remove ram and cylinder assembly from reservoir then pull Remove nuts, baffle and retainer rings from studs and screw ram out of cylinder. Worn packing cup on piston should be the studs into the base. Clean reassemble Sump Base in replaced if cloth backing is visible.
  • Page 62 REASSEMBLY - ALL MODELS FIGURE 3-84 FIGURE 3-83 Install cover assembly using mallet to seat cover, making Reinstall reservoir using mallet to seat reservoir squarely. certain filter plug is properly located next to the electric motor. FIGURE 3-86 FIGURE 3-85 Torque the bolts to 100-125 in.
  • Page 63 Torque the pump to 100-125 in. lbs. using a 1/2” hex socket on the locknuts. REFILL UNIT WITH MEYER M-1 HYDRAULIC FLUID FIGURE 3-89 FIGURE 3-90 Follow instructions under Torque cap screws to 45 - 55 in. lbs., then apply Permatex “Replacement of Hydraulic Fluid”...
  • Page 64 CROSSOVER RELIEF VALVE DISASSEMBLY - ALL MODELS FIGURE 3-92 FIGURE 3-91 Use a screwdriver to loosen Plug to access the Spring. One piece Crossover Relief Valve. FIGURE 3-94 FIGURE 3-93 Remove Spring. Remove Plug. -62-...
  • Page 65 CROSSOVER RELIEF VALVE DISASSEMBLY - ALL MODELS FIGURE 3-96 FIGURE 3-95 Use a “thin” 7/16” wrench to loosen Body. Remove Washer. FIGURE 3-97 FIGURE 3-98 Separate Body. Pull Pin out of lower half of Body. Remove O-ring and Glyd. Ring. -63-...
  • Page 66 CROSSOVER RELIEF VALVE REASSEMBLY - ALL MODELS FIGURE 3-99 FIGURE 3-100 Carefully slide Glyd. Ring over Pin. Carefully slide O-ring over Glyd. Ring. FIGURE 3-101 FIGURE 3-102 Slide Pin with the small end first into the lower half of Reinstall lower half of Body to the upper half. The upper half Body.
  • Page 67 CROSSOVER RELIEF VALVE REASSEMBLY - ALL MODELS FIGURE 3-103 FIGURE 3-104 Use a “thin” 7/16” wrench to loosen Body. Remove Washer with flat side facing down. FIGURE 3-106 FIGURE 3-105 Install Plug. Install Spring. -65-...
  • Page 68 CROSSOVER RELIEF VALVE REASSEMBLY - ALL MODELS FIGURE 3-107 FIGURE 3-108 Use a screwdriver to tighten Plug. Insert small O-ring into the Crossover cavity of the P.A. Block. Make sure small O-ring fits flat in the bottom of the cavity. FIGURE 3-109 FIGURE 3-110 Insert larger O-ring into the Crossover cavity until it sitting...
  • Page 69 REASSEMBLY - E-78 FIGURE 3-111 FIGURE 3-112 “A” Coil is Black and Tan wires, “B” Coil is Red and Gently install electronic framing over hydraulic unit until coil Tan wires and “C” Coil is Green and Tan wires. wire plugs are accessible to the coils. Plug coil wire plugs into the proper coils.
  • Page 70 REASSEMBLY - E-78 & E-88 FIGURE 3-115 FIGURE 3-116 Install two 1/4” bolts using a 7/16” Socket or wrench. Be Install two 1/4” bolts using a 7/16” Socket or wrench. sure to reinstall shim. A2 has a large red wire (Positive) D1 has a large black wire along with a small black wire and small red wire.

  • Page 71: Brush Replacement

    REASSEMBLY - E-78 & E-88 FIGURE 3-118 FIGURE 3-119 Install three phillips head screws from the rear cover. Install two phillips head screws from the front cover. BRUSH REPLACEMENT OF ISKRA MOTOR - All Models FIGURE 3-120 Remove motor from hydraulic unit. Remove top cap from motor housing. To replace brushes (part # 15854) start by pushing each brush assembly towards the commutator.
  • Page 72 3 seconds then unplug the power PCM into electrical outputs to activate the appropriate cable from the Meyer accessory jack. Then plug solenoids to get the proper snow plow movement to cable back in and power on RCM.
  • Page 73 NOTE: If RCM is powered on during the Mounting/ A. RCM Dismounting sequence, the plow lights will flash and Plug the coiled power cord into the Meyer accessory the plow will no longer mount/dismount. port, then into the RCM. To Power On the unit - Press and hold the green I/O “UP”...
  • Page 74 ELECTRONIC TROUBLESHOOTING E-78 & E-88 This option only available for 10 seconds after HEADLIGHTS: a “joy stick movement”(up, down, left, right). Press Use the truck’s OEM light switch to control OFF/LO/HI soft key below SHK to activate the “Shake” operation. beams.
  • Page 75 The moldboard functions will be disabled during this time. This can occur for a couple of different reasons: 1. If the Meyer accessory port plug is accidentally Does HCM If after power icon Power cycle HCM cycle, still no icon.
  • Page 76 ELECTRONIC TROUBLESHOOTING E-78 & E-88 RCM Display appears Stuck on Meyer Logo Vehicle lights do not work, no plow connected RCM Display appears Stuck on Meyer Logo Truck lights don't shine - NO plow connected Button Is HCM Beeps Properly...

  • Page 77: Specifications

    PUMP - Pressure Output solenoid connections, energize, Replace energize? Power cycle PCM Pump solenoid E-58H, E-78 & E-88 (Non Adjustable) 2000 P.S.I. CROSSOVER RELIEF VALVE Opening Pressure 3800 + 400 P.S.I. HYDRAULIC FLUID CAPACITY Still no motor, Remove and test...
  • Page 78 SNOW & ICE CONTROL EQUIPMENT E-58H, E-78 & E-88 power unit service manual Meyer Products LLC Diamond Equipment 18513 Euclid Ave. • Cleveland, OH 44112-1084 6 Angell Lane• Damariscotta, ME 04543-9720 Phone (216) 486-1313 Phone (207) 563-2227 email•warranty@meyerproducts.com www.diamondplow.com • email info@diamondplow.com...

This manual is also suitable for:

E-78 e-z mount plusE-88 e-z mount xpress

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