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Power Step LeTourneau L1850, Manual, Page: 2 / 32

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CONTENTS 

Page 3

Section 1  Installation and Mounting Instructions

Installation Drawings:

8

Section 2  Recommended Maintenance Procedure

9

Section 3  Operating Procedure

Section 4  Drawings and Repair Parts lists

10

4    Assembly Complete

Parts List

12

4-1 Stair Access Frame and Mounting  Assembly

Parts List

14

4-2 Stair Assembly

Parts List

16

4-3 Latch Assembly

Parts List

18

4-4 Hydraulic Cylinders & Plumbing

Parts List
Hydraulic Layout
Valve Diagram

21

4-5  Power Pack 

Parts List

25

4-6 Electrical Controls

Wiring Diagrams

Insert and Warning Pages

Pg. 2

PSA-L-1850 -FS-RF  12-12-14

FOLDING STAIRWAY

LeTourneau L1850 Wheel Loader

Rear Mounted Stair

Summary of Contents for LeTourneau L1850

Page 1: ...FOLDING STAIRWAY Manual LeTourneau L1850 Wheel Loader Rear Mounted Stair PSA L 1850 FS RF 12 12 14 Model No PSA L1850 FS RF Serial No PSA L1850 001 Date Manufactured Dec 2014 ...

Page 2: ...ly Complete Parts List 12 4 1 Stair Access Frame and Mounting Assembly Parts List 14 4 2 Stair Assembly Parts List 16 4 3 Latch Assembly Parts List 18 4 4 Hydraulic Cylinders Plumbing Parts List Hydraulic Layout Valve Diagram 21 4 5 Power Pack Parts List 25 4 6 Electrical Controls Wiring Diagrams Insert and Warning Pages Pg 2 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader...

Page 3: ...Pg 3 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 1 Installation Drawings Mounting Pl Weldment PSA L1850 BA B01 ...

Page 4: ... Item 5 to its indicated position proceed with the installation of the Main Frame PSA FRA A04 and bolt it with the 8 x M8x60 socket head cap screws 2 Once the frame is secure proceed to install the stair and secure it with the 2 pins supplied for this purpose 3 Install the Hydraulic ram and connect the hoses to the Power Pack NOTE Follow all on site Mine lifting and safety procedures when installi...

Page 5: ...Pg 5 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 1 Installation Drawings PSA L1850 BA Access Sht 1 DETAIL A DETAIL B ...

Page 6: ...0 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 1 Installation Drawings PSA L1850 BA Access Sht 2 1204 854 2154 145 215 232 STAIR SHOWN IN BOTH POSITIONS DEPLOYED AND STOWED ...

Page 7: ... is raised Lock in raised position Re tighten hydraulic fittings SECURE THE PLATFORM IN THE RAISED POSITION MECHANICALLY CHAIN TAGOUT THE POWER STEP To recommission the POWER STEP Loosen hydraulic fittings on cylinder side of lock valve Note Collect displaced oil Lower platform to lowest position using alternate safety approved means fully retracting cylinder Ensure all personnel are clear of step...

Page 8: ...main mounting bolts for torque Check hydraulic oil level in power pack and top up as necessary Stairway in raised position Top up using same hydraulic oil as used in hydraulics of machine Thoroughly check all electrical wiring for damage replace as necessary Repeat daily check as above 5000 Hours Change hydraulic oil in tank of hydraulic power pack 5 0 litres It is recommended that the same hydrau...

Page 9: ... raises into operate the electrical switch to the raise position up Hold the switch in the up position until the ladder is in the fully raised position The ladder is now raised and stored Pg 9 PSA L 1850 FS RF 12 12 14 OPERATING NOTES NOTE FLOW CONTROL VALVE ADJUSTMENT The valve should be positioned to restrict the flow and speed of the Power Step when lowering Adjust the knob on top of the valve ...

Page 10: ...Pg 10 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 Assembly Complete PSA L1850 FS RF ...

Page 11: ...e 11 Pg 11 PSA L 1850 FS RF 12 12 14 ITEM PART NO PART NAME QTY PSA L1850 FS RF ASSEMBLY COMPLETE 1 1 PS FRA A04 ACCESS FRAME MOUNTING ASSEMBLY 1 2 PS STR A16 STAIR ASSEMBLY 1 3 PS LOC A07 LATCH ASSEMBLY 1 4 PS 62998 AH PS 62997 A HYDRAULIC CYLINDER Stair HYDRAULIC CYLINDER Latch 1 5 PS 80103A SLD POWER PACK 1 ...

Page 12: ...2 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 1 Access Frame and Mounting Assembly PS FRA 04 See Parts List Pg 12 Does not include Items 2 2A 2B 26 ...

Page 13: ...0X20ZP CPS M10X16ZP CPS M6X50ZP CPS M5X50ZP PS M10NN PS M6NNN PS M5NN CPS M16WH CPS M12WH CPS M10WH CPS M6WH CPS M5WH STAIR ACCESS FRAME ASSEMBLY ACCESS MOUNT BASE SIDE STIFFENER PLATE BOTTOM STIFFNER PLATE TOP LANDING TREAD MESH FLOOR HARDENED BUSH STRIKER LEFT SIDE STRIKER RIGHT SIDE BUFFER LEADER PLATE MANUAL RELEASE LEVER PIVOT PIN LATCH BUSH WASHER LATCH LEVER BUFFER Mackay GREASE NIPPLE M6 B...

Page 14: ...FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 2 Stair Assembly PSA STR A16 See Parts List Page 14 Pg 14 PSA L 1850 FS RF 12 12 14 17 16 ...

Page 15: ...02 PS P30 008 02 PS 63009B PS STR C62 PS 34108 PS 23637 PS FRA C42 CPS M16X60ZP CPS M12X50P CPS M12X35P CPS M8X40ZP CPS M12NN CPS M12NZP CPS M12WH STAIR STILE LEFT HAND STAIR STILE RIGHT HAND STAIR HANDRAIL LEFT HAND STAIR HANDRAIL RIGHT HAND STAIR ACTUATOR BEAM STAIR TREAD STAIR TREAD TOP PIVOT BUSH BUSH Actuator Beam BUMPER PAD Rubber BUFFER RUBBER WASHER PLATE STRIKER BOLT M16 x 60 CAP SCREW BO...

Page 16: ...Pg 16 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 3 Latch Assembly PSA LOC A07 See Parts List Pg 15 ...

Page 17: ...S LOC C31 PS 39009 PS LOC C29 PS LOC C49 PS S245 CPS M10X70RP CPS M12X100ZP CPS M12X55ZP CPS M12X35ZP CPS M10X70ZP CPS M12NZP CPS M10NZP CPS M12WH CPS M10WH CYLINDER LATCH FRAME LATCH WRIST FABRICATION ACTUATOR ARM FABRICATION BOLT LINK LOCK PIN LATCH BUSH Polyurethane WRIST SPACER SPRING WASHER ANTI RATTLE WASHER LATCH BUSH WRIST PLATE ROLL PIN BOLT M12 x 100 BOLT M12 x 55 BOLT M12 x 35 BOLT M10 ...

Page 18: ...4 PS 61157 PS 61158 5MM PS61163 PS 61160 PS 61147 PS 61158 1MM PS 61145 PS 60051 3 5M PS 60050 3 5M HYDRAULIC CYL with hard plumbing HARD PLUMBING KIT HYDRAULIC CYLINDER 2 1 2 PIN CYLINDER SEAL KIT Not shown VALVE PILOT OPERATED LOCKING FITTING ELBOW 9 16 JIC FITTING ELBOW O RING 1 4BSPPx9 16 JIC FITTING O RING 1 4BSPPx 9 16 JIC FITTING 5mm RESTRICTION 90 DEG REDUCER JIC x BSPP TUBE Cut to suit 51...

Page 19: ...4 Item Part No Part Name Qty 1 1A 2 3 4 5 6 7 PS 62997 PS 62997 P PS 62997 SK PS 60051 5M 9 16 PS 60050 1 8M 7 16 PS 61150 PS 61152 PS 61159 HYDRAULIC CYLINDER LATCH CYLINDER PIN SEAL KIT LATCH NOT SHOWN HOSE HYDR 9 16 JIC ST SWIVEL 5M HOSE HYDR 7 16 JIC ST SWIVEL 5M ELBOW FITTING 7 16 ELBOW FITTING 9 16 ELBOW FITTING 9 16 1 2 1 1 1 1 1 1 1 3 4 1A 6 7 5 ...

Page 20: ...WAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 4 Hydraulics Valve Diagram Pg 20 PSA L 1850 FS RF 12 12 14 Double Acting Hydraulic System with directional Control Valve and Cylinder Lock Valve 1mm 5mm ...

Page 21: ...u L1850 Wheel Loader Rear Mounted Stair Section 4 5 Power Pack PS 80103A SLD See Parts List Pg 22 Pg 21 PSA L 1850 FS RF 12 12 14 8 4 13 27 26 6 5 25 6 2 7 10 29 11 16 14 12 3 30 24 3A Hoses shown dotted View B View A 7A 9 9A 8A ...

Page 22: ...g 22 Pg 22 PSA L 1850 FS RF 12 12 14 NOTE THE RELIEF PRESSURE OF THE POWERPACK IS TO BE SET TO 2800PSI IF THE POWERPACK IS REPLACED THIS RELIEF PRESSURE WILL NEED TO BE RESET USING INLINE GAUGES FAILURE TO DO SO MAY RESULT IN ACCIDENT OR INJURY 15 20 37 21 View B 23 9 9A 36 View A 32 33 24 14 19 11 16 28 10 18 31 17 12 ...

Page 23: ...8 PS 41016 PS 73010 POWER PACK ASSEMBLY MOTOR ENCLOSURE SEALED ST ST POWER PACK CLAMP ELECTRIC MOTOR HEAT SENSOR AUDIBLE ALARM BRIDGE RECTIFIER SOLENOID 24V START MOTOR HYDR HOSES 9 16 JIC STRAIGHT SWIVEL HYDR HOSES 7 16 JIC STRAIGHT SWIVEL HYDRAULIC FITTING 9 16 HYDRAULIC FITTING 7 16 HYDRAULIC FITTING 7 16 HYDRAULIC FITTING 9 16 135A CIRCUIT BREAKER 5A CIRCUIT BREAKER ISOLATION SWITCH SEALED WIR...

Page 24: ...2A PS HD10 5 16P RUBBER BOOT BLACK 3 PIN SOCKET PARK BREAK 5 PIN SOCKET AUTO RAISE DECAL AUTO RAISE SOCKET HYDRAULIC HOSE 9 16 x 3 5M HYDRAULIC HOSE 7 16 x 3 5M VALVE FITTING FLOW CONTROL VALVE 5 PIN SOCKET 3 1 1 1 1 1 1 1 Not Shown Not Shown FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 5 Power Pack PS 80103A SLD See Photos Pg 20 21 ...

Page 25: ...r Rear Mounted Stair Section 4 6 Electrical Controls Pg 25 PSA L 1850 FS RF 12 12 14 Cab Harness Equipment Refer Wiring Harness Drawings Proximity Switch Assembly Mounted on Fixed Landing Control Pendant Switch Mounted on Handrail 7 3 8 4 2 5 6 1 ...

Page 26: ...LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 6 Electrical Controls See Page 23 Item Part No Part Name Qty 1 2 3 4 5 6 7 8 PS 73013 PS 73013 B PS 77005 PS 77009AR PS 77004 PS 75430 PS 77002 PS 77003 CONTROL PENDANT SWITCH CONTROL PENDANT BRACKET HAND RAIL SWITCH HARNESS AUTO RAISE HARNESS CABIN TO SWITCH HARNESS PROXIMITY SWITCH CABIN BOX LED LIGHT INDICATOR WIRING HARNESS IN CABIN 1 ...

Page 27: ...Pg 27 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 6 Electrical Controls Wiring Diagrams Page 1 WIRING HARNESS ...

Page 28: ...Pg 28 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 6 Electrical Controls Wiring Diagrams Page 2 ...

Page 29: ...Pg 29 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 6 Electrical Controls Wiring Diagrams Page 3 WIRING HARNESS 1 ...

Page 30: ...Pg 30 PSA L 1850 FS RF 12 12 14 FOLDING STAIRWAY LeTourneau L1850 Wheel Loader Rear Mounted Stair Section 4 6 Electrical Controls Wiring Diagrams Page 4 WIRING HARNESS 2 ...

Page 31: ...Pg 31 PSA L 1850 FS RF 12 12 14 Ground Access Up Down Switch Kit with harness and Y harness joint PS 77020 INSERT ONLY ...

Page 32: ...LADDER MATERIAL IS BENT TWISTED OR CRACKED YOU MUST REPORT THE INCIDENT TO POWER STEP SO PROPER REMEDIAL ACTION IS TAKEN TO ADDRESS THE DAMAGE POWER STEP DESIGNED AND FABRICATED THIS PRODUCT UNDER SPECIFIC STANDARDS AND GUIDELINES ANY CHANGES OR MODIFICATIONS WILL JEOPARDISE MATERIAL PROPERTIES AND SAFETY OF THE PRODUCT CONTACT POWER STEP AUSTRALIA PTY LTD TEL 61 7 32773977 FAX 61 7 32773994 EMAIL...

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