FOLDING STAIRWAY
Komatsu 980E Truck
Section 2.
Electrical Installation
Pg7
PSA-K980E-FS 8-11-16A
Procedure
Remove centre console panel in cabin -
- to do this remove six (6) screws and gear selection knob.
Position stairway indicator panel on centre console, above hour meter.
- drill two mounting screw holes (6mm or 7/32")
- one electrical cable hole (12mm or 15/32")
- do not re-fix console Panel
Remove four (4) screws holding Komatsu fuse panel behind operator's seat. Drill one hole
to insert Caterpillar fuse holder - fit fuse holder, into fuse indicator panel - tighten. Drill
size (12mm or 15/32").
Remove rear access panel from back of cabin and run short conduit through the main
cable gland to inside centre console, ensuring conduit goes underneath control box.
Connect blue wire start from conduit above to blue wire of cabin indicator panel harness.
In rear access, connect black wire, with 10mm eye terminal to machine ground, and blue
wire to outer terminal of newly inserted fuse holder.
Install short blue wire to screw terminal of Komatsu circuit breaker, and other end to fuse
holder.
Run wiring harness from Power Step Folding Stairway magnetic proximity switch around
under radiator, and follow cabling/hose routing up to air line/ electrical outlet on rear Right
Hand Side of cabin.
Drill hole in RH Cabin access panel - route wiring harness in through access panel, and
through to under centre console - connect wires appropriately as colour coded. Hole
saw/drill size (24mm), cable tie harness as appropriate, approximately every 300mm.
