Hydrostatic Transmission (Hst) Operation - New Holland Boomer 45 Operator's Manual

Hydrostatic Transmission (HST) operation

The ground speed of tractors equipped with a hydrostatic
transmission is continuously variable, from zero to full
rated speed in each range. Speed is controlled by the
HST forward (A) and reverse (B) pedals located on the
right-hand operator's platform.
To operate the HST transmission, carry out the following:
1. Start the engine and pull the HPL control lever (7) rear-
ward to lift the implement off the ground .
2. Move the hand throttle lever (4) forward until the en-
gine speed is above 1500 RPM.
3. Place the range gear shift lever (3) in the desired
range.
4. Depress the brake pedals (2) and disengage the park
brake lever (1) (8) .
NOTE: The parking brake lever is located at position
(8)on cab tractor and at position (1)on a Roll Over Pro-
tection Structure (ROPS).
5. For forward travel, depress the forward pedal (6) un-
til the desired ground speed is reached. For reverse
travel, depress the rear pedal (5). Unless the HST
cruise control switch is in the engaged position, the
transmission returns to neutral and the tractor stops
when the pedal is released.
NOTE: Depress the HST pedals slowly, fast movement of
the pedals will cause the tractor to move suddenly.
NOTE: To change the range speed, release the HST ped-
als and bring the tractor to a stop and select the desired
range.
4 - OPERATING INSTRUCTIONS
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