PACCAR Inc. TX-8 — Power Take-off (PTO) Switch (option)

INDICATIONS AND CONTROLS - Hill Start Aid Disabled Warning Light (option) transmission system will override the Manual position and perform an upshift. Hill Start Aid Disable Switch (option) Power Take-off (PTO) Switch (option) NOTE 3 The transmission initiates upshifts from Manual for engine overspeed protection. Two-position Switch Two-position Switch If the start gear is changed and it causes the engine to lug at takeoff, the transmission system will override Manual mode and perform a downshift. Positions: 1. OFF (temporary position) 2. (center, resting position) Positions: 1. ON 2.

OFF Hill Start Aid Disabled Warning Light (option) OFF Pressing the switch up temporarily disables the Hill Start Aid feature. Disabling Hill Start Aid presents both a Popup and a warning light (see Hill Start Aid Warning Light ). ON The up position enables the PTO, starting the PTO activation process. Hill Start Aid automatically turns back on after the first successful launch. OFF The down position disables the PTO. This vehicle may be equipped with a dash- mounted switch that controls PTO engagement/disengagement.

When the operator activates the switch for the PTO, the status indicator light (located on the switch) will immediately illuminate even though PTO engagement may not have occurred. If the PTO is engaged and the operator turns the switch OFF , the PTO status indicator light (located on the switch) This warning means that the Hill Start Aid feature is disabled. This may be due to use of the Hill Start Aid Disable switch (see Hill Start Aid Disable Switch ) or due to a fault with the Hill Start Aid feature. 20 Y53-1331 (6/21)