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FOLDING STAIRWAY

Komatsu WA1200 Loader

Section 4

Assembly Complete

PSA-WA1200-FS

See Drawing Page 10

Pg11

PSA-KOM-WA1200-FS 30-8-18A

ITEM PART NO.

PART NAME

QTY

PSA-WA1200-FS

ASSEMBLY COMPLETE

1

1

PS-23838-A

STAIR BASE FRAME

1

2

PS-23851-A

STAIR ASSEMBLY

1

3

PS-23847-A

LATCH ASSEMBLY

1

4

PS-62996-A

HYDRAULIC CYLINDERS (Stair)

1

5

PS-80103A-SLD

POWER PACK

1

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Summary of Contents for PSA-WA1200-FS

Page 1: ...FOLDING STAIRWAY Manual for Komatsu WA 1200 PSA KOM WA1200 FS 30 8 18A Model No PSA WA1200 FS Serial No WA1200 FS 001C Date Manufactured ...

Page 2: ...ngs and Repair Parts lists 10 4 Assembly Complete Parts List 12 4 1 Base Frame and Mounting Assembly Parts List 14 4 2 Stair Assembly Parts List 16 4 3 Latch Assembly Parts List 18 4 4 Hydraulic Cylinder Parts List Valve Diagram 21 4 5 Power Pack Parts List 25 4 6 Electrical Controls Parts Lists Wiring Diagrams Pg2 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader ...

Page 3: ...305mm to the edge of the CW body as shown in VIEW Z Tack weld pads to skin of CW 5 Unbolt and remove template Weld pads with an 8mm fillet all around Follow welding procedure for cold weather As per Drawing PSA WA1200 CW Sheet 2 of 3 Page 5 Stair To Mounting Pads Installation Procedure 1 Fit base mounting plate A01 against mounting pads and bolt firmly with the 8 Bolts M20x60 supplied 2 Lift stair...

Page 4: ...FOLDING STAIRWAY Komatsu WA1200 Loader Section 1 Installation Instructions Drawing PSA WA1200 CW Sheet 1 Stair Mounting Pads See Procedure Pg 3 Pg4 PSA KOM WA1200 FS 30 8 18A ...

Page 5: ...FOLDING STAIRWAY Komatsu WA1200 Loader Section 1 Installation Instructions Drawing PSA WA1200 CW Sheet 2 Stair Mounting Pads See Procedure Pg 3 Floor and Handrails Pg5 PSA KOM WA1200 FS 30 8 18A ...

Page 6: ...FOLDING STAIRWAY Komatsu WA1200 Loader Section 1 Installation Instructions Drawing PSA WA1200 CW Sheet 3 Pg6 PSA KOM WA1200 FS 30 8 18A ...

Page 7: ...lect displaced oil and be aware that air enters the piston side of the cylinder as platform 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 alter...

Page 8: ... 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 hydraulic oil be us...

Page 9: ...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 Pg9 PSA KOM WA1200 FS 30 8 18A 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 by turning le...

Page 10: ...Pg10 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 Assembly Complete PSA WA1200 FS ...

Page 11: ... FS See Drawing Page 10 Pg11 PSA KOM WA1200 FS 30 8 18A ITEM PART NO PART NAME QTY PSA WA1200 FS ASSEMBLY COMPLETE 1 1 PS 23838 A STAIR BASE FRAME 1 2 PS 23851 A STAIR ASSEMBLY 1 3 PS 23847 A LATCH ASSEMBLY 1 4 PS 62996 A HYDRAULIC CYLINDERS Stair 1 5 PS 80103A SLD POWER PACK 1 ...

Page 12: ...Pg12 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 1 Base Frame and Mounting Assembly PS 23838 A See Parts List Pg 13 ...

Page 13: ...2NZP PS M8NZP CPS M20WH CPS M16WH CPS M12WH CPS M8WH PS 61002 2 BASE FRAME BASE MOUNTING PLATE WELD PAD OUTER WELD PAD INNER TOP STAIR TREAD STRIKER LEFT SIDE STRIKER RIGHT SIDE MANUAL RELEASE LEVER HINGE PIN SHEAR ISOLATOR ELEMENT SHEAR ISOLATOR CAP ISOLATOR COVER PLATE FACE ISOLATOR ELEMENT LATCH BUSH RELEASE LEVER SPACER LIFT LUG LATCH LEVER BUFFER Mackay 12252555 M6 FACE ISOLATOR WASHER THREAD...

Page 14: ...FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 2 Stair Assembly PS 23851 A See Parts List Page 15 Pg14 PSA KOM WA1200 FS 30 8 18A ...

Page 15: ...0ZP CPS M10X85ZP CPS M8X75ZP CPS M6X15ZP CPS M12NZP CPS M10NN CPS M8NN CPS M12WH CPS M10WH CPS M8WH STAIR STILE 6 Tread STAIR HANDRAIL HANDRAIL LINK POST STAIR ACTUATOR BEAM STAIR TREAD STAIR TREAD TOP HINGE BUSH BUMPER PAD BUFFER RUBBER MACKAY M12402055 M8 BUFFER RUBBER MACKAY M12503555 M10 BUSH Stair Actuator Beam WASHER STAIR EXTENSION LEFT STAIR EXTENSION RIGHT BOLT M12 x 75 BOLT M12 x 30 BOLT...

Page 16: ...Pg16 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 3 Latch Assembly PS 23847 ASSY See Drawing Page 17 ...

Page 17: ... M12X110ZP CPS M12X55ZP CPS M12X40ZP CPS M12X35ZP CPS M12X25ZP CPS M10X75ZP CPS M10X15ZP CPS M5X45ZP CPS M12NZP CPS M10NZP CPS M5NN CPS M12WH CPS M10WH CPS M5WH CYLINDER LATCH BASE LATCH WRIST ACTUATOR ARM BOLT LINK LATCH BOLT LATCH BUSH WRIST SPACER SPRING WASHER LATCH BUSH WRIST PLATE S245 PROXIMITY SWITCH BOLT M12 x 110 BOLT M12 x 55 Striker BOLT M12 x 40 BOLT M12 x 35 BOLT M12 x 25 BOLT M10 x ...

Page 18: ...FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 4 Hydraulic Cylinders and Plumbing Cyl P No PS 62996 AH See Parts list Pg 19 Latch Cyl PS 62997 A Pg18 PSA KOM WA1200 FS 30 8 18A ...

Page 19: ...HOWN HYDRAULIC CYLINDER LATCH SEAL KIT LATCH NOT SHOWN CYLINDER PINS VALVE PILOT OPERATED LOCKING FITTING T 7 16 FITTING 9 16 JIC SWIVEL FITTING T 9 16 FITTING ELBOW 7 16 FITTING ELBOW 7 16 FITTING ELBOW 9 16 FITTING 1 4 BSPPx7 16 STRAIGHT FITTING ELBOW O RING 1 4BSPPx9 16 JIC FITTING STRAIGHT 1 4 BSPPx9 16 JIC FITTING 5mm RESTRICTION 90 DEG FITTING ELBOW 9 16 REDUCER JIC x BSPP TUBE 900 1200 HOSE...

Page 20: ...FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 4 Hydraulic Cylinder Valve Diagram Pg20 PSA KOM WA1200 FS 30 8 18A Double Acting Hydraulic System with directional Control Valve and Cylinder Lock Valve ...

Page 21: ...AY Komatsu WA1200 Loader Section 4 5 Power Pack PS 80103A SLD See Parts List Pg 23 Pg21 PSA KOM WA1200 FS 30 8 18A 9 9A 8 4 13 27 26 6 5 25 6 2 7 7A 10 29 11 16 14 12 3 30 24 3A 3B Hoses shown dotted View B View A 8A ...

Page 22: ...3 Pg22 View B View A 32 33 24 14 19 11 16 28 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 10 18 31 17 12 15 20 37 21 23 9 9A 36 10 18 ...

Page 23: ...9 PS 41017 PS 41018 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 TUBE 9 16 HYDR TUBE 7 16 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 WIRING BOX TOGGLE SWITCH KI...

Page 24: ... Qty 30 31 32 33 34 35 36 37 PS 73009 PS HD10 3 16P PS HD10 5 16P PS 41032 PS 60051 3 5M PS 60050 3 5M PS 63202A 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 ...

Page 25: ... Loader Section 4 6 Electrical Controls Pg25 PSA KOM WA1200 FS 30 8 18A 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: ...DING STAIRWAY Komatsu WA1200 Loader Section 4 6 Electrical Controls See Page 25 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 1 1 1 1 2 1 1...

Page 27: ...Pg27 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 6 Electrical System Wiring Page 1 ...

Page 28: ...Pg28 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 6 Electrical System Wiring Page 2 WIRING HARNESS ...

Page 29: ...Pg29 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 6 Electrical System Wiring Page 3 ...

Page 30: ...Pg30 PSA KOM WA1200 FS 30 8 18A FOLDING STAIRWAY Komatsu WA1200 Loader Section 4 6 Electrical System Wiring Page 4 WIRING HARNESS ...

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