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Power Step Caterpillar 854G Manual

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FOLDING STAIRWAY
Manual for Caterpillar 854G
PSA-CAT854G-FS 18-10-12
Model No.: PSA-CAT854G-FS
Serial No.: PSA-854G-001 ~
Date Manufactured: Oct 2012

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Summary of Contents for Power Step Caterpillar 854G

  • Page 1 FOLDING STAIRWAY Manual for Caterpillar 854G Model No.: PSA-CAT854G-FS Serial No.: PSA-854G-001 ~ Date Manufactured: Oct 2012 PSA-CAT854G-FS 18-10-12...

  • Page 2: Table Of Contents

    FOLDING STAIRWAY Caterpillar 854G Wheel Dozer CONTENTS Page 3 Section 1 Installation and Mounting Instructions Installation Drawings: Bolting Pads Reinforcing Section 2 Recommended Maintenance procedure Section 3 Operating Procedure Section 4 Drawings and Repair Parts lists Assembly Complete Parts List...
  • Page 3 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Bolting Pads PS-24308 NOTE Follow all on-site/Mine lifting and safety procedures when installing PSFS to Wheel Dozer PROCEDURE. See Drawing 24308 Page 4. Fit the various Bolting Pads and Supports to the back of the Isolator Mounting Plate as shown in Detail W.
  • Page 4 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Bolting Pads PS-24308 Pg. 4 PSA-CAT854G-FS 18-10-12...
  • Page 5 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Reinforcing OEM Stair PS-24309/10 Dwg. 24309 IF it was necessary to cut away the underside of the horizontal run of the OEM stair frame per Drg 24 308 Procedure Note ii, re-instate the strength of...
  • Page 6 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Bumper Reinforcements PS-24311/2 NOTE Follow all on-site/Mine lifting and safety procedures when installing PSFS to Wheel Dozer PROCEDURE. See Drawing 24311 Page 7 Cut away the bottom of the wall of the OEM bumper/tank enclosure over a length of 275mm centred on the bottom of the rear bolting pad.
  • Page 7 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Bumper Reinforcements PS-24311 Pg. 7 PSA-CAT854G-FS 18-10-12...
  • Page 8 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Bumper Reinforcements PS-24312 Pg. 8 PSA-CAT854G-FS 18-10-12...
  • Page 9 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Stair Set PS-24313 See Drawing Page 10 NOTE Follow all on-site/Mine lifting and safety procedures when installing PSFS to Wheel Dozer PROCEDURE. With the Isolator Mounting Plate 24 303 bolted to the various bolting pads, assemble the stair set, generally per Drg 23 859 (but with only one hydraulic actuator).
  • Page 10 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 1 Installation Drawings Stair Set PS24313 VIEW Z VIEW Y VIEW X Pg. 10 PSA-CAT854G-FS 18-10-12...
  • Page 11 Tighten the hydraulic fittings either side of lock valves to restriction fittings. Cycle step unloaded several times to purge all air from hydraulic system. The Power Step will not operate correctly if there is any air in the hydraulic circuit (due to the incorrect operation of the lock valve).

  • Page 12: Section 2 Recommended Maintenance Procedure

    FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 2 Recommended Maintenance Procedure Daily Visually check stairway and structure for damage, loose components, handrails, etc. Check for hydraulic oil leaks from hydraulic cylinders, plumbing and hoses. Notify the appropriate supervisor for any observed damage or malfunction.

  • Page 13: Section 3 Operating Procedure

    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 left or right (clockwise) when the step is being lowered, until it is lowering at a safe and reasonable speed.

  • Page 14: 14 4 Assembly Complete

    FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4 Assembly Complete Pg. 14 PSA-CAT854G-FS 18-10-12...
  • Page 15 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4 Assembly Complete See Drawing Page 14 ITEM PART NO. PART NAME PSA-CAT854G-FS ASSEMBLY COMPLETE PS-23838A STAIR BASE FRAME & MOUNTING PS-23852A STAIR ASSEMBLY PS-23847A LATCH ASSEMBLY PS-62996-A HYDRAULIC CYLINDERS (Stair) PS-80103A-SLD POWER PACK Pg.
  • Page 16 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4.1 Stair Base Frame and Mounting Assembly PS-23838A See Parts List Pg. 17 Pg. 16 PSA-CAT854G-FS 18-10-12...
  • Page 17 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4.1 Stair Base Frame and Mounting PS-23838A See Drawing Page 16 PS-23838-A (Excl.Items 2, 3, 4, 5, 6, 7,19, 23, 24, 25, 26, 32, 35, 36) Item Part No. Part Name PS-23838 BASE FRAME...
  • Page 18 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-2 Stair Assembly PS- 23-852A See Parts List Page 19 Pg. 18 PSA-CAT854G-FS 18-10-12...
  • Page 19 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 5-2 Stair Assembly PS- 23852A See Drawing Page 18 Item Part No. Part Name PS-23852A STAIR STILE (6 Tread) PS-23868 STAIR EXTENSION-(Single Tread) 1set PS-23853A STAIR HANDRAILS PS-23863 HANDRAIL LINK POST PS-23849 STAIR ACTUATOR BEAM...

  • Page 20: 20 4-3 Latch Assembly

    FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-3 Latch Assembly PS-23847A See Parts List Pg.21 Pg. 20 PSA-CAT854G-FS 18-10-12...
  • Page 21 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-3 Latch Assembly PS-23847A See Drawing Page 20 Item Part No. Part Name PS-62997 CYLINDER PS-23842 LATCH BASE PS-23845-99 LATCH WRIST PS-23845-98 ACTUATOR ARM PS-23844-01 BOLT LINK PS-23843 LATCH BOLT PS-23846-02 LATCH BUSH...
  • Page 22 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-4 Hydraulic Cylinder & Plumbing Cyl. P/No. PS- 62996-AH Latch Cyl. PS- 62997-A Pg. 22 PSA-CAT854G-FS 18-10-12...

  • Page 23: 22 4-4 Hydraulic Cylinders

    FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-4 Hydraulic Cylinders & Plumbing See Drawing 22 STAIR & LATCH CYLINDERS PS-62996-HPK-FS Hard Plumbing Kit (Items 4, 6, 9, 11 - 15, 17 & 22) Item Part No. Part Name PS-62996-A HYDRAULIC CYLINDER ASSEMBLY...
  • Page 24 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-4 Hydraulics (Valve Diagram) Double Acting Hydraulic System with directional Control Valve and Cylinder Lock Valve Pg. 24 PSA-CAT854G-FS 18-10-12...

  • Page 25: 25 4-5 Power Pack

    FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-5 Power Pack PS- 80103A-SLD See Parts List Pg 27 View B View A Hoses shown dotted Pg. 25 PSA-CAT854G-FS 18-10-12...
  • Page 26 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-5 Power Pack PS-80103A-SLD See Parts List Pg 27 View A View B NOTE. THE RELIEF PRESSURE OF THE POWERPACK IS TO BE SET TO 1500PSI. IF THE POWERPACK IS REPLACED,THIS RELIEF PRESSURE WILL NEED TO BE RESET USING INLINE GAUGES.
  • Page 27 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-5 Power Pack PS-80103A-SLD See Photos Pg 25 & 26 Item Part No. Part Name PS-80103A-SLD POWER PACK ASSEMBLY PS-21107-METAL MOTOR ENCLOSURE- SEALED ST/ST PS-80103A POWER PACK PS-80103-CLAMP CLAMP ELECTRIC MOTOR PS-82415 AUDIBLE ALARM...
  • Page 28 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-6 Electrical Controls Control Pendant Switch Mounted on Handrail Proximity Switch Assembly Mounted on Fixed Landing Cab Harness & Equipment Refer Wiring Harness Drawings Pg. 28 PSA-CAT854G-FS 18-10-12...
  • Page 29 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-6 Electrical Controls See Page 28 Item Part No. Part Name PS-73013 CONTROL PENDANT SWITCH PS-73013-B CONTROL PENDANT BRACKET PS-77005 HAND RAIL SWITCH HARNESS PS-77009AR AUTO RAISE HARNESS Optional only PS-77004 CABIN TO SWITCH HARNESS...

  • Page 30: Electrical Controls Wiring Diagrams

    FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-6 Electrical Controls Wiring Diagrams Page 1 Pg. 30 PSA-CAT854G-FS 18-10-12...
  • Page 31 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-6 Electrical Controls Wiring Diagrams Page 2 Non-Auto Raise Pg. 31 PSA-CAT854G-FS 18-10-12...
  • Page 32 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-6 Electrical Controls Wiring Diagrams Page 3 Auto Raise Pg. 32 PSA-CAT854G-FS 18-10-12...
  • Page 33 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-6 Electrical Controls Wiring Diagrams Page 4 WIRING HARNESS 1 Pg. 33 PSA-CAT854G-FS 18-10-12...
  • Page 34 FOLDING STAIRWAY Caterpillar 854G Wheel Dozer Section 4-6 Electrical Controls Wiring Diagrams Page 5 WIRING HARNESS 2 Pg. 34 PSA-CAT854G-FS 18-10-12...