Mec Micro 19 Guide

Part # 94554 R3
November 2019
Serial Number Range
16900000 - Up
Service & Parts Manual
Micro 19
Art 5525

Page i Micro 19 - Service & Parts Manual
November 2019
Revision History
Date Reason for Update
November 2017 New Release
July 2019 Hydraulic Power Unit Assembly
November 2019 New Drive Wheel Assembly - From Serial #16907561
Updated Error Indicator Readout table
1401 S. Madera Avenue, Kerman, CA93630 USA
Toll Free: 1 - 877 - 632 - 5438
Phone: 1 - 559 - 842 - 1500
Fax: 1 - 559 - 842 - 1520
[email protected]
www.MECawp.com
MEC Aerial Work Platforms

Page ii Micro 19 - Service & Parts Manual
November 2019
Table of Contents
Chapter 1 - Service . . . . . . . . . . . . . 1
Service Introduction ................1
Section 1 - MEC Operator Policy ............2
MEC Operator Policy . . . . . . . . . . . . . . . . . . . 2
Section 2 - Safety Symbols & General Safety Tips. . . . . . . . 3
Safety Symbols & General Safety Tips . . . . . . . . . . . . . . 3
Section 3 - Specifications . . . . . . . . . . . . . . 4
Specifications.....................4
Section 4 - Torque Specifications . . . . . . . . . . . . 5
Bolt Torque Specification - American Standard . . . . . . . . . . . . 5
Bolt Torque Specification - Metric Standard . . . . . . . . . . . . . 6
Hydraulic Components Torque Table . . . . . . . . . . . . . . . 7
Section 5 - Maintenance Lock . . . . . . . . . . . . . 8
Maintenance Lock . . . . . . . . . . . . . . . . . . . . 8
Section 6 - Hydraulic, Electrical and Total System. . . . . . . . 9
Hydraulic, Electrical and Total System . . . . . . . . . . . . . . 9
Section 7 - Primary Machine Components . . . . . . . . . . 10
Primary Machine Components . . . . . . . . . . . . . . . . 10
Section 8 - Emergency Systems and Procedures . . . . . . . . 11
Emergency Systems and Procedures . . . . . . . . . . . . . . . 11
Section 9 - Transport and Lifting Instructions . . . . . . . . . 12
Free-Wheel Configuration For Winching or Towing . . . . . . . . . . . 12
Lift And Support The Machine . . . . . . . . . . . . . . . . . 13
Section 10 - Maintenance . . . . . . . . . . . . . . 14
General Machine Maintenance . . . . . . . . . . . . . . . . 14
Pre-Start Inspection Checklist . . . . . . . . . . . . . . . . . 15
Frequent Inspection Checklist . . . . . . . . . . . . . . . . . 16
Annual Inspection Checklist . . . . . . . . . . . . . . . . . 22
Control Component Locations. . . . . . . . . . . . . . . . . 25
FaultCodes.....................26
Error Indicator Readout . . . . . . . . . . . . . . . . . . 27
Section 12 - Schematics . . . . . . . . . . . . . . . 31
Hydraulic Schematic . . . . . . . . . . . . . . . . . . . 31
Electrical Schematic . . . . . . . . . . . . . . . . . . . 32

Page iii Micro 19 - Service & Parts Manual
November 2019
Chapter 2 - Parts . . . . . . . . . . . . . . 33
Parts Introduction ................33
Section 13 - Chassis ................34
Chassis Assembly - Up to Serial # 16900460 . . . . . . . . . . . . . 34
Chassis Assembly - From Serial # 16900461 . . . . . . . . . . . . . 36
Pothole Protection Assembly . . . . . . . . . . . . . . . . . 38
SteerLinkage.....................40
Left Drive Wheel Assembly - To Serial #16907560 . . . . . . . . . . . 42
Right Drive Wheel Assembly - To Serial #16907560 . . . . . . . . . . . 44
Drive Wheel Assembly - From Serial #16907561 . . . . . . . . . . . . 46
Battery Tray Module . . . . . . . . . . . . . . . . . . . 48
Ground Control Panel Assembly & Standard Pre Kit . . . . . . . . . . . 50
Hydraulic Power Unit Assembly . . . . . . . . . . . . . . . . 52
Section 14 - Scissor . . . . . . . . . . . . . . . . 54
Scissor Assembly . . . . . . . . . . . . . . . . . . . . 54
Section 15 - Platform. . . . . . . . . . . . . . . . 56
Main Platform Assembly . . . . . . . . . . . . . . . . . . 56
Platform Extension Assembly . . . . . . . . . . . . . . . . . 58
Platform Extension Lock . . . . . . . . . . . . . . . . . . 60
Platform Controls . . . . . . . . . . . . . . . . . . . . 62
Section 16 - Hydraulics . . . . . . . . . . . . . . . 64
Lift Cylinder Assembly . . . . . . . . . . . . . . . . . . . 64
Upper Lift Cylinder Assembly . . . . . . . . . . . . . . . . . 66
Hydraulic Hoses and Fittings . . . . . . . . . . . . . . . . . 68
Section 17 - Electrical System . . . . . . . . . . . . . 70
Electrical Harness . . . . . . . . . . . . . . . . . . . . 70
Decal Locations . . . . . . . . . . . . . . . . . . . . 72
Section 18 - Decals . . . . . . . . . . . . . . . . 72
Decal Locations . . . . . . . . . . . . . . . . . . . . 72

Page 1 Micro 19 - Service & Parts Manual
November 2019
Service Introduction
This Service section is designed to provide you, the customer, with the instructions needed to
properly maintain the MEC self-propelled aerial work platform. When used in conjunction with the
illustrated Parts section in this manual and the Operator’s Manual (provided separately), this manual
will assist you in making necessary adjustments and repairs, and identifying and ordering the correct
replacement parts.
All parts represented here are manufactured and supplied in accordance with MEC quality
standards. We recommend that you use genuine MEC parts to ensure proper operation and reliable
performance.
To obtain maximum benefits from your MEC Aerial Work Platforms, always follow the proper
operating and maintenance procedures. Only trained authorized personnel should be allowed to
operate or service this machine. Service personnel should read and study the Operator’s, and the
Service and Parts Manuals in order to gain a thorough understanding of the unit prior to making any
repairs.
Chapter 1 - Service

Page 2 Micro 19 - Service & Parts Manual
November 2019
MEC Operator Policy
Note: The best method to protect yourself and others from injury or death is to use common sense.
If you are unsure of any operation, don’t start until you are satisfied that it is safe to proceed
and have discussed the situation with your supervisor.
Service personnel and machine operators must understand and comply with all warnings and
instructional decals on the body of the machine, at the ground controls, and platform control console.
MODIFICATIONS OF THIS MACHINE FROM THE ORIGINAL DESIGN AND
SPECIFICATIONS WITHOUT WRITTEN PERMISSION FROM MEC ARE
STRICTLY FORBIDDEN. A MODIFICATION MAY COMPROMISE THE
SAFETY OF THE MACHINE, SUBJECTING OPERATOR(S) TO SERIOUS
INJURY OR DEATH.
MEC’s policies and procedures demonstrate our commitment to Quality and our relentless ongoing
efforts towards Continuous Improvement, due to which product specifications are subject to change
without notice.
Any procedures not found within this manual must be evaluated by the individual to assure oneself
that they are “proper and safe.”
Your MEC Aerial Work Platform has been designed, built, and tested to provide many years of safe,
dependable service. Only trained, authorized personnel should be allowed to operate or service the
machine.
MEC, as manufacturer, has no direct control over machine application and operation. Proper safety
practices are the responsibility of the user and all operating personnel.
If there is a question on application and/or operation, contact MEC Aerial Work Platforms:
1401 S. Madera Avenue, Kerman, CA93630 USA
Toll Free: 1 - 877 - 632 - 5438
Phone: 1 - 559 - 842 - 1500
Fax: 1 - 559 - 842 - 1520
[email protected]
www.MECawp.com
MEC Aerial Work Platforms
MEC Operator Policy
Section 1 - MEC Operator Policy

Page 3 Micro 19 - Service & Parts Manual
November 2019
Safety Symbols & General Safety Tips
MEC manuals and decals use symbols, colors and signal words to help you recognize important
safety, operation and maintenance information.
RED and the word DANGER – Indicates an imminently hazardous
situation which, if not avoided, will result in death or serious injury.
ORANGE and the word WARNING – Indicates a potentially hazardous
situation which, if not avoided, could result in death or serious injury.
YELLOW with alert symbol and the word CAUTION – Indicates a
potentially hazardous situation which, if not avoided, may result in minor
or moderate injury.
YELLOW without alert symbol and the word CAUTION – Indicates a
potentially hazardous situation which, if not avoided, may result in
property damage.
GREEN and the word NOTICE – Indicates operation or maintenance
information.
Regular inspection and constant maintenance is the key to efficient economical operation of your
aerial work platform. It will help to assure that your equipment will perform satisfactorily with a
minimum of service and repair.
The actual operating environment of the machine governs the inspection schedule. Correct lubrication
is an essential part of the preventative maintenance to minimize wear on working parts and ensure
against premature failure. By maintaining correct lubrication, the possibility of mechanical failure and
resulting downtime is reduced to a minimum.
Never leave hydraulic components or hoses open. They must be protected from contamination
(including rain) at all times.
Never open a hydraulic system when there are contaminants in the air.
Always clean the surrounding area before opening hydraulic systems.
Use only recommended lubricants. Improper lubricants or incompatible lubricants may be as
harmful as no lubrication.
Watch for makeshift “fixes” which can jeopardize safety as well as lead to more costly repair.
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Safety Symbols & General Safety Tips
Section 2 - Safety Symbols & General Safety Tips

Page 4 Micro 19 - Service & Parts Manual
November 2019
Specifications
Working Height* 24 ft 4 in 7.6 m
Platform Height 18 ft 4 in 5.6 m
Maximum Drive Height 18 ft 4 in 5.6 m
Stowed Height Top Guardrail 79 in 2.0 m
Platform Floor 39 in 1.0 m
Platform Extension Length 23.6 in 0.6 m
Machine Weight** (Unloaded) 2690 lb 1220 kg
Lift Capacity Total 500 lb 227 kg
Deck Extension Capacity 1 Person / 250lb (113 kg)
Maximum Occupants 2
Platform Length (Extended) 78 in 2.0 m
Platform Length (Retracted) 54 in 1.4 m
Width (Overall) 32 in 0.81 m
Platform Dimensions (Length × Width) 53.9 × 27.6 in 1.37 × 0.7 m
Wheel Base 44.5 in 1.13 m
Turning Radius - Inside 17.7 in 0.45 m
Ground Clearance - Stowed 2.4 in 6 cm
Ground Clearance - Elevated 0.6 in 1.5 cm
Drive Speed (Proportional) Stowed 0-2.5 mph 0-4 km/h
Raised or Extended 0-0.5 mph 0-8 km/h
Gradability 25%/14°
Maximum Side Slope - Stowed 5°
Ground Pressure/Wheel Min/Max 83/112 psi 5.8/7.9 kg/cm2
Maximum Wheel Load 960 lb 435 kg
Occupied Floor Pressure Full Load Platform Retracted 239 psf 1167 kg/m2
Occupied Floor Pressure Platform Deck Extended 171 psf 835 kg/m2
Maximum Operating Wind Speed 28 mph / 12.5 m/sec (45 km/h)
Tire Size 9 × 4 inch/230 × 100 mm
Wheel Nut Torque 166.7 ft-lb / 226 Nm, Secured with cotter pin
Hydraulic Pressure 2320 psi/ 160 bar
Power System Voltage 24 Volt DC
Battery Charger Input 110-230 VAC, 50-60 Hz
Output 24 Volt DC
Batteries Two 12 Volt Deep Cycle 115Ah
Airborne Noise Emissions <70 dB
Meets applicable requirements of ANSI A92.6-2006.
*Working Height adds 6 feet (2 m) to platform height.
**Weight may increase with certain options.
Section 3 - Specifications Specifications

Page 5 Micro 19 - Service & Parts Manual
November 2019
Bolt Torque Specification - American Standard
Fasteners
Use the following values to apply torque unless a specific torque value is called out for the part being
used.
American Standard Cap Screws
SAE Grade 5 8
Cap Screw
Size (inches) Torque Torque
Ft. Lbs Nm Ft. Lbs Nm
Min Max Min Max Min Max Min Max
1/4 - 20 6.25 7.25 8.5 10 8.25 9.5 11 13
1/4 - 28 8 9 11 12 10.5 12 14 16
5/16 - 18 14 15 19 20 18.5 20 25 27
5/16 - 24 17.5 19 12 26 23 25 31 34
3/8 - 16 26 28 35 38 35 37 47.5 50
3/8 - 24 31 34 42 46 41 45 55.5 61
7/16- 14 41 45 55.5 61 55 60 74.5 81
7/16 - 20 51 55 69 74.5 68 75 92 102
1/2 - 13 65 72 88 97.5 86 96 116 130
1/2 - 20 76 84 103 114 102 112 138 152
9/16 - 12 95 105 129 142 127 140 172 190
9/16 - 18 111 123 150 167 148 164 200 222
5/8 - 11 126 139 171 188 168 185 228 251
5/8 - 18 152 168 206 228 203 224 275 304
3/4 - 10 238 262 322 255 318 350 431 474
3/4 - 16 274 302 371 409 365 402 495 544
7/8 - 9 350 386 474 523 466 515 631 698
7/8 - 14 407 448 551 607 543 597 736 809
1- 8 537 592 728 802 716 790 970 1070
1 - 14 670 740 908 1003 894 987 1211 1137
Torque values apply to fasteners as received from the supplier, dry or when lubricated with
normal engine oil.
If special graphite grease, molydisulphide grease, or other extreme pressure lubricants are
used, these torque values do not apply.
Section 4 - Torque Specifications
Bolt Torque Specification - American Standard

Page 6 Micro 19 - Service & Parts Manual
November 2019Section 4 - Torque Specifications
Bolt Torque Specification - Metric Standard
Fasteners
Use the following values to apply torque unless a specific torque value is called out for the part being
used
Metric Cap Screws
Metric Grade 8.8 10.9
Cap Screw Size
(Millimeters)
8.8
9.01
Torque Torque
Ft. Lbs Nm Ft. Lbs Nm
Min Max Min Max Min Max Min Max
M6 × 1.00 6 8 8 11 9 11 12 15
M8 × 1.25 16 20 21.5 27 23 27 31 36.5
M10 × 1.50 29 35 39 47 42 52 57 70
M12 × 1.75 52 62 70 84 75 91 102 123
M14 × 2.00 85 103 115 139 120 146 163 198
M16 × 2.50 130 158 176 214 176 216 238 293
M18 × 2.50 172 210 233 284 240 294 325 398
M20 × 2.50 247 301 335 408 343 426 465 577
M22 × 2.50 332 404 450 547 472 576 639 780
M24 × 3.00 423 517 573 700 599 732 812 992
M27 × 3.00 637 779 863 1055 898 1098 1217 1488
M30 × 3.00 872 1066 1181 1444 1224 1496 1658 2027
Torque values apply to fasteners as received from the supplier, dry or when lubricated with
normal engine oil.
If special graphite grease, molydisulphide grease, or other extreme pressure lubricants are
used, these torque values do not apply.