PUMP GP-GEAR 2976792 - Caterpillar

Normal Shifting
An automatic downshift will occur when the engine speed decreases to approximately 1400 rpm. An automatic upshift will occur when the engine speed increases to approximately 2025 rpm. The shifting of the transmission is determined by the load that is put on the machine.If the ground speed is less than 10 km/h (6 mph) in any forward speed and the shift lever is moved to "REVERSE", the transmission immediately shifts to "REVERSE". The transmission will automatically shift into the NEUTRAL position when the ground speed is more than 10 km/h (6 mph) and if the transmission control is moved into the REVERSE position. The transmission will automatically shift into the REVERSE position when the ground speed decreases to less than 10 km/h (6 mph) .Transmission Hold Control Activated
When the transmission hold control is placed in the ENGAGED position, automatic shifts are inhibited. Automatic downshifts are inhibited unless the engine is in an underspeed condition. The transmission will automatically downshift if the engine rpm drops too low. Underspeed conditions will occur when the engine rpm drops below 1000 rpm. Automatic upshifts are inhibited unless the engine is in an overspeed condition. If the engine speed reaches 120% of high idle, the transmission will automatically upshift.