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Service Manual Part No. 84700 Rev B November 2005 Refer to inside cover for additional serial number information (from serial number GR05-5001) (from serial number GR05-5001) (from serial number GR05-5001)
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Technical Publications Genie Industries has endeavored to deliver the highest degree of accuracy possible. However, continuous improvement of our products is a Genie policy. Therefore, product specifications are subject to change without notice. Readers are encouraged to notify Genie of errors and send in suggestions for improvement.
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Country of manufacture: USA Facility code This machine complies with: used only for models manufactured ANSI A92.6-1999 in multiple facilities B354.2-01 Genie Industries 18340 NE 76th Street Redmond, WA 98052 PN - 77055 Part No. 84700 GR-12 • GR-15 • GR-20...
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November 2005 This page intentionally left blank. GR-12 • GR-15 • GR-20 Part No. 84700...
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You read, understand and obey: - manufacturer’s instructions and safety rules - employer’s safety rules and worksite regulations - applicable governmental regulations You have the appropriate tools, lifting equipment and a suitable workshop. Part No. 84700 GR-12 • GR-15 • GR-20...
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Be sure to properly dispose of old oil or other fluids. Use an approved container. Please be environmentally safe . GR-12 • GR-15 • GR-20 Part No. 84700...
A-1 Perform Pre-operation Inspection ............3 - 6 A-2 Perform Function Tests ..............3 - 6 A-3 Perform 30 Day Service ..............3 - 7 A-4 Grease the Steer Yokes ..............3 - 7 Part No. 84700 GR-12 • GR-15 • GR-20...
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D-3 Inspect and Lubricate the Lifting Chains ........... 3 - 29 D-4 Replace the Hydraulic Tank Return Filter ......... 3 - 29 Checklist E Procedure E-1 Test or Replace the Hydraulic Oil ............. 3 - 30 viii GR-12 • GR-15 • GR-20 Part No. 84700...
(ANSI, CSA and Australia models) 1.57 m GR-12 and GR-15 68.1 in (CE models) 1.73 m GR-20 78 in (all models) 1.98 m For operational specifications, refer to the Operator's Manual. Part No. 84700 GR-12 • GR-15 • GR-20 2 - 1...
1.8 km/h Chevron Rykon MV oil is fully compatible and 12.2 m / 24.8 sec mixable with Shell Donax TG (Dexron III) oils. Genie specifications require hydraulic oils which are Platform raised 0.5 mph designed to give maximum protection to hydraulic...
7.5 to 10.5Ω with manual override 12V DC with diode (schematic item N) Continuous improvement of our products is a Genie policy. Product specifications are subject to change without notice. Part No. 84700 GR-12 • GR-15 • GR-20 2 - 3...
Hydraulic Hose and Fitting Torque Specifications Your machine is equipped with JIC 37° flared fittings and hose ends. Genie specifications require that fittings and hose ends be torqued to specification when they are removed and installed or when new hoses or fittings are installed.
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5 Operate all machine functions and inspect the hoses and fittings and related components to confirm that there are no leaks. Part No. 84700 GR-12 • GR-15 • GR-20 2 - 5...
Indicates that an incorrect result has occurred · Wheels chocked after performing a series of steps. · All external AC power supply disconnected from the machine Part No. 84700 GR-12 • GR-15 • GR-20 3 - 1...
The maintenance inspection report contains checklists for each type of scheduled inspection. Make copies of the Maintenance Inspection Report to use for each inspection. Store completed forms for three years. 3 - 2 GR-12 • GR-15 • GR-20 Part No. 84700...
After repair, place a check in the “R” box. Legend Y = yes, acceptable N = no, remove from service R = repaired Part No. 84700 GR-12 • GR-15 • GR-20 3 - 5...
Complete information to perform this procedure is Refer to the Operator's Manual on your machine. available in the appropriate operator's manual. Refer to the Operator's Manual on your machine. 3 - 6 GR-12 • GR-15 • GR-20 Part No. 84700...
2 Pump multipurpose grease into the steer yoke until the steer yoke is full and grease is being forced past the bearings. Repeat this step for the other steer yoke. Grease type Multipurpose grease Part No. 84700 GR-12 • GR-15 • GR-20 3 - 7...
1 Put on protective clothing and eye wear. lowering the platform. 2 GR-12: Raise the platform 5 Be sure that the battery cable connections are approximately 3 feet / 1 m. free of corrosion.
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50 feet / 15 m. If you have any further questions regarding the battery charger operation, please contact the Genie Industries Scissor Service Department. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 9...
· Ground control panel · Hydraulic power unit 4 Inspect for a liberal coating of dielectric grease in all wiring connections between the ECM and the platform controls, and level sensor wiring. 3 - 10 GR-12 • GR-15 • GR-20 Part No. 84700...
Dealer service is strongly nylock nut recommended. spring upper sequencing bracket 4 If needed, apply a generous amount of sequencing cable Boe-lube wax to the inside and outside channels of each column. 3 - 12 GR-12 • GR-15 • GR-20 Part No. 84700...
Result: No machine functions should operate. The red Emergency Stop button at the ground controls will stop all machine operation, even if the key switch is switched to platform control. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 13...
Result: The machine functions should not operate. 6 Turn the key switch to the off position. 7 Test the machine functions from the ground and platform controls. Result: No machine functions should operate. 3 - 14 GR-12 • GR-15 • GR-20 Part No. 84700...
If the battery 21 volt fault LED (21V) blinks one time, the battery voltage is less than 20V DC. The inverter will continue to operate until the battery voltage falls to 17.8V DC. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 15...
5 Choose a point on the machine; i.e., contact patch of a tire, as a visual reference for use when crossing the test line. 3 - 16 GR-12 • GR-15 • GR-20 Part No. 84700...
4 Press the drive function select button. 5 Choose a point on the machine; i.e., contact patch of a tire, as a visual reference for use when crossing the start and finish lines. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 17...
Refer to Section 2, 5 Raise the platform approximately 4 feet / 1.2 m Specifications. from the ground. 6 Press the drive function select button. 3 - 18 GR-12 • GR-15 • GR-20 Part No. 84700...
4 Press the slow speed select button. Specifications. 5 Choose a point on the machine; i.e., contact patch of a tire, as a visual reference for use when crossing the start and finish lines. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 19...
Result: The motion alarm should sound when the joystick is moved off center in either direction. 7 Press the drive function select switch. 3 - 20 GR-12 • GR-15 • GR-20 Part No. 84700...
Extremely dirty conditions may require that the cap be inspected more often. 1 Confirm that the breather cap is installed on the hydraulic tank and is not clogged or damaged. 3 - 22 GR-12 • GR-15 • GR-20 Part No. 84700...
2 Install and new cap onto the tank. 1 Locate the grease fittings on each pivot pin of the platform overload assembly. 2 Thoroughly pump grease into each grease fitting using a multi-purpose grease. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 23...
See D-1, Calibrate the Platform Overload System (if equipped). 5 Test all machine functions from the platform controls. Result: All platform control functions should not operate. 3 - 24 GR-12 • GR-15 • GR-20 Part No. 84700...
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12 Test all machine functions from the platform controls. Result: All platform control functions should operate. If the platform overload system is not operating properly, see D-1, Calibrate the Platform Overload System (if equipped). Part No. 84700 GR-12 • GR-15 • GR-20 3 - 25...
(GR-12 and GR-15 models) 229 kg (GR-20 models) 159 kg AWP and Fiberglass Platform (all models) 159 kg Stockpicker Platform (GR-12 and GR-15 models) 229 kg (GR-20 models) 159 kg 3 - 26 GR-12 • GR-15 • GR-20 Part No. 84700...
16 Test all machine functions from the ground idler wheel controls. spacer Result: All ground control functions should not 2 Raise the platform until approximately operate. 4 inches / 10 cm of each column is visible. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 27...
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Section 3 • Scheduled Maintenance Procedures November 2005 CHECKLIST D PROCEDURES REV B 3 GR-12 and GR-15: Visually inspect the top of 8 Inspect each idler wheel for the following: each column for clearance between the roller · Excessive wear on the side flanges wheels and the adjacent column surface.
6 Activate and hold the platform up toggle switch. 7 Inspect the filter and related components to be sure that there are no leaks. 8 Clean up any oil that may have spilled. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 29...
Torque specifications 2 Open the power unit module tray. Hydraulic tank retaining fasteners, dry 35 in-lbs 4 Nm Hydraulic tank retaining fasteners, lubricated 26 in-lbs 2.9 Nm 3 - 30 GR-12 • GR-15 • GR-20 Part No. 84700...
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Do not allow the pump to cavitate. 14 Repeat steps 12 through 13 until the hydraulic system and tank are both full. Part No. 84700 GR-12 • GR-15 • GR-20 3 - 31...
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Section 3 • Scheduled Maintenance Procedures November 2005 This page intentionally left blank. 3 - 32 GR-12 • GR-15 • GR-20 Part No. 84700...
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Indicates that a specific result is expected after performing a series of steps. Indicates that an incorrect result has occurred after performing a series of steps. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 1...
6 Push in the red Emergency Stop button to the diagnostic display on the power unit side of the off position at both the ground and platform machine. controls and turn the key switch to the off position. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 3...
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5 Release the lift function select and horn buttons. Result: The diagnostic display will show the maximum lift speed percentage. 6 Press the lift function select button. 4 - 4 GR-12 • GR-15 • GR-20 Part No. 84700...
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Any change in software settings will not take effect until the key Result: The diagnostic display will show the switch is turned to the off position. maximum lift speed percentage. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 5...
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Any change in software settings buttons. will not take effect until the key Result: The diagnostic display will show the switch is turned to the off position. maximum lift speed percentage. 4 - 6 GR-12 • GR-15 • GR-20 Part No. 84700...
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Any change in software settings will not take effect until the key Result: The diagnostic display will show the switch is turned to the off position. maximum lift speed percentage. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 7...
PLATFORM CONTROLS REV B Software Configuration The Electronic Control Module (ECM) contains programming for all configurations of the Genie Runabout. The machine can be adjusted to a different configuration using the buttons at the platform controls. How to Determine the Software Configuration 1 Remove the platform controls from the platform.
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10 Turn the key switch to the off position. Any change in software settings will not take effect until the key switch is turned to the off position. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 9...
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When this option is configured, a dot in the diagnostic display window will remain continuously illuminated when the ECM is in the 'SC' mode OR when the platform up function is activated. 4 - 10 GR-12 • GR-15 • GR-20 Part No. 84700...
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When the ECM is in the 'SC' mode and the option is deactivated, there will not be an illuminated dot in the diagnostic display window. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 11...
3 Remove the platform control box from the platform and set it to the side. 4 Remove the fasteners securing the platform mount to the mast. Remove the platform and mount from the machine. 4 - 12 GR-12 • GR-15 • GR-20 Part No. 84700...
8 Place the mast assembly on a suitable structure the Platform. capable of supporting it. 2 Tag and disconnect the power to platform wire harness at the quick disconnect near the Electronic Control Module (ECM). Part No. 84700 GR-12 • GR-15 • GR-20 4 - 13...
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15 Remove the adjustment nuts from the chain tension rocker on the column. 16 Remove the column by sliding the column out the bottom of the mast. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 15...
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9 Install the adjustment nuts on the number 1 column chains. Tighten the adjustment nuts until the lifting chains have equal tension and the chain tension rocker is centered in the inspection hole in the column. 4 - 16 GR-12 • GR-15 • GR-20 Part No. 84700...
REV B MAST COMPONENTS Glide Pads Lifting Chains Glide pads, used on the GR-12 and GR-15, and How to Adjust the Lifting Chains wear pads, used on the GR-20, are used to 1 Mark the column to be adjusted. provide a uniform fit between the columns as the mast extends and retracts.
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If link plates or pins are bent or deformed, replace entire chain. Replace both chains on that column. Do not repair just the affected portion of the chain. Continued to the next page 4 - 18 GR-12 • GR-15 • GR-20 Part No. 84700...
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Cracked Link Plates Visually inspect chain link Cracks in any chain link Replace entire chain. Do plates for cracks. plate. not repair just the affected portion of the chain. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 19...
6 Support the cylinder and carefully slide it out of the mast assembly. Crushing hazard. The lift cylinder could become unbalanced and fall if not properly supported when removed from the mast. 4 - 20 GR-12 • GR-15 • GR-20 Part No. 84700...
1 Tag and disconnect the level sensor wire chassis harness from the chassis wire harness. level sensor 'X' indicator 2 Remove the level sensor adjusting fasteners. mast Remove the level sensor from the machine. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 21...
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2 inches / 5 cm. 6 Tighten the level sensor adjusting fasteners 10 GR-12 and GR-15: Place a 0.65 x 6 x 6 until the bubble in the top of the level sensor is inch / 1.65 x 15 x 15 cm thick steel block under centered in the calibration circles.
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30 Raise the platform approximately 1 foot / 30 cm. 2 inches / 5 cm. Result: The level sensor alarm should not 19 GR-12 and GR-15: Place a 0.79 x 6 x 6 sound. inch / 2 x 15 x 15 cm thick steel block under Result: The level sensor alarm does sound.
3 Turn the key switch to ground control and pull gradually. Do not allow oil to squirt out the red Emergency Stop button to the on or spray. position at both the ground and platform controls. 4 - 24 GR-12 • GR-15 • GR-20 Part No. 84700...
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Failure to restore the machine to original factory specifications could cause the machine to tip over, resulting in death or serious injury. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 25...
Solenoid valve, 2 position 4 way ....H ......Platform up ......25 ft-lbs / 34 Nm Relief valve, 3500 psi / 241 bar maximum ..... I ......System relief ......20 ft-lbs / 27 Nm 4 - 26 GR-12 • GR-15 • GR-20 Part No. 84700...
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Section 4 • Repair Procedures REV A FUNCTION MANIFOLD Note: 'alpha' callouts refer to corresponding notes on the hydraulic schematic Note: 'alpha-numeric' callouts refer to corresponding notes on the electrical schematic Part No. 84700 GR-12 • GR-15 • GR-20 4 - 27...
10 Install the relief valve cap. pressure gauge to the test port on the function 11 Repeat steps 5 through 7 to confirm the relief manifold (schematic item A). valve pressure. 4 - 28 GR-12 • GR-15 • GR-20 Part No. 84700...
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4 Remove the platform controls from the platform. position at both the ground and platform Perform this test from the ground controls. with the platform controls. Do not stand in the platform. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 29...
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(schematic item A) on the cavitating. function manifold. 3 Remove the platform controls from the platform. Perform this test from the ground with the platform controls. Do not stand in the platform. 4 - 30 GR-12 • GR-15 • GR-20 Part No. 84700...
18 to 21Ω 20V DC with diode (schematic item H) Solenoid valve, 2 position 2 way N.C. 7.5 to 10.5Ω with manual override 12V DC with diode (schematic item N) Part No. 84700 GR-12 • GR-15 • GR-20 4 - 31...
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Section 4 • Repair Procedures November 2005 FUNCTION MANIFOLD REV A How to Test a Coil Diode Genie incorporates spike suppressing diodes in all COIL of its coils. Properly functioning coil diodes protect MULTI METER the electrical circuit by suppressing voltage spikes.
1 Tag, disconnect and plug the hydraulic supply hard line at the pump. Cap the fitting on the pump. Remove the hard line from the tank. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 33...
Bodily injury hazard. The could fall if not properly supported. yoke/motor assembly may fall if 6 Remove the wheel castle nut. Remove the not properly supported when wheel. removed from the machine. 4 - 34 GR-12 • GR-15 • GR-20 Part No. 84700...
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Drive motor mounting fasteners, dry 75 ft-lbs could fall if not properly supported. 101.7 Nm 6 Remove the wheel castle nut. Remove the Drive motor mounting fasteners, lubricated 56 ft-lbs wheel. 76.3 Nm Part No. 84700 GR-12 • GR-15 • GR-20 4 - 35...
Do not allow oil to squirt or spray. Component damage hazard. Hoses can be damaged if they are kinked or pinched. 4 - 36 GR-12 • GR-15 • GR-20 Part No. 84700...
2 inches / 5 cm. Place blocks under the chassis for support. Crushing hazard. The chassis could fall if not properly supported. 6 Remove the wheel castle nut. Remove the wheel. Part No. 84700 GR-12 • GR-15 • GR-20 4 - 37...
Do not allow oil to position at both ground and platform controls squirt or spray. · Wheels chocked · All external AC power supply disconnected from the machine Part No. 84700 GR-12 • GR-15 • GR-20 5 - 1...
The codes listed in the Fault Code Chart still exists describe malfunctions and can aid in troubleshooting the machine by pinpointing the Return to Inspect Perform area or component affected. service and test repair problem solved 5 - 2 GR-12 • GR-15 • GR-20 Part No. 84700...
Series/parallel coil fault. incorrect. DIP switch settings. Low battery voltage. Batteries discharged. Charge batteries. Static strap may be missing ECM has been erased. Replace static strap. from the machine. Part No. 84700 GR-12 • GR-15 • GR-20 5 - 3...
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Section 5 • Fault Codes November 2005 This page intentionally left blank. 5 - 4 GR-12 • GR-15 • GR-20 Part No. 84700...
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Be sure that all necessary tools and test equipment are available and ready for use. Malfunction Identify Troubleshoot discovered symptoms problem still exists Return to Inspect Perform service and test repair problem solved Part No. 84700 GR-12 • GR-15 • GR-20 6 - 1...
Steer right coil Y3 (output) Parallel coil Y1 (not available on GS-1530/32 and GS-1930/32) Work light L30 (option) Jumper Level sensor signal S7 (input) Down limit switch LS66 (input) Part No. 84700 GR-12 • GR-15 • GR-20 6 - 3...
Circuit connection Control relay Connector PLATFORM CONTROL SWITCH Fuse GROUND CONTROL Key switch Horn or alarm Hour meter HALL JOYSTICK GENERATOR CONTROLLER Flashing beacon STEER LEFT/ RIGHT FUNCTION ENABLE Joystick Part No. 84700 GR-12 • GR-15 • GR-20 6 - 5...
A1 OUT 4-6V BATTERY FLASHING BEACONS MOTOR (OPTION) CONTROLLER INPUT HORN RELAY (H2 OPTION) DC/AC INVERTER (OPTION) STEER STEER DRIVE RIGHT LEFT REVERSE HOUR METER AUTO-STYLE HORN (OPTION) ES0126B 6 - 6 GR-12 • GR-15 • GR-20 Part No. 84700...
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FORWARD DOWN PIN3 DRIVE ENABLE BN8 PIN4 LIFT ENABLE BN9 - NOTE - POUT11 PLATFORM MACHINE SHOWN IN THE STOWED ALARM CONTROLLER PIN11 POSITION WITH THE POWER OFF ES0126B Part No. 84700 GR-12 • GR-15 • GR-20 6 - 7...
A8 OUT BATTERY ELECTRONIC CONTROL MODULE CHARGER A1 OUT 4-6V BATTERY FLASHING BEACONS MOTOR (OPTION) CONTROLLER INPUT HORN RELAY (H2 OPTION) DC/AC INVERTER (OPTION) HOUR METER AUTO-STYLE HORN (OPTION) ES0127B 6 - 8 GR-12 • GR-15 • GR-20 Part No. 84700...
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IN IN ELECTRONIC CONTROL MODULE STEER STEER DRIVE DRIVE PLATFORM PLATFORM RIGHT LEFT REVERSE FORWARD DOWN - NOTE - MACHINE SHOWN IN THE STOWED POSITION WITH THE POWER OFF ES0127B Part No. 84700 GR-12 • GR-15 • GR-20 6 - 9...
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HORN BN5 PIN3 DRIVE ENABLE BN8 PIN4 LIFT ENABLE BN9 POUT11 PLATFORM ALARM CONTROLLER PIN11 - NOTE - MACHINE SHOWN IN THE STOWED POSITION WITH THE POWER OFF ES0127B 6 - 10 GR-12 • GR-15 • GR-20 Part No. 84700...
3500 psi maximum 241 bar maximum 10 MICRON WITH 4 gpm @ 2500 psi 25 psi / 1.7 bar 15 L/min @ 172 bar BYPASS POWER UNIT HYDRAULIC TANK HS0039A 6 - 12 GR-12 • GR-15 • GR-20 Part No. 84700...
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Genie North America Phone 425.881.1800 Toll Free USA and Canada 800.536.1800 425.883.3475 Genie Australia Pty Ltd. Phone + 61 7 3375 1660 Fax + 61 7 3375 1002 Genie China Genie Scandinavia Phone + 86 21 53852570 Phone + 46 31 575100...
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