Front-Wheel Drive; Hst Foot Pedal; Gear Transmission; Transmission Main Shift Lever And Range Lever - New Holland TC21D Operator's Manual

FRONT-WHEEL DRIVE

The front-wheel drive option is controlled by a lever,
1, located on the right-hand control pod.
To engage front-wheel drive, depress the clutch
pedal fully and push the lever fully forward. To
disengage front-wheel drive, depress the clutch
pedal and pull the lever fully rearward.
IMPORTANT: Use front-wheel drive when additional
traction is required while operating on loose soil, in
wet, slippery conditions, or on slopes. For normal
operation on firm soil, level hard surfaces, or when
roading the unit at high speeds, disengage the
front-wheel drive to maximize tire and driveline life
and to economize on fuel.
H.S.T. FOOT PEDAL
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 H.S.T. rocker pedal located on the
right-hand foot platform.
For forward travel, depress the forward pad on the
pedal until the desired ground speed is reached. For
reverse travel, depress the rear pad on the pedal.
Unless the H.S.T. speed cruise control switch, Figure
2-20, is in the engaged position, the transmission
returns to neutral and the tractor stops when the
pedal is released.
TRANSMISSION MAIN SHIFT LEVER AND
RANGE LEVER
The transmission main shift lever, 1, and range lever,
2, are located on the left-hand control pod. The shift
pattern of the main shift lever is molded into the knob.
The range lever has three ranges and two neutral
positions. Each range has three forward gears and
one reverse gear, providing a total of nine forward
and three reverse speeds.
IMPORTANT: Do not attempt to change gears while
the tractor is moving. The 9 x 3 transmission is not
synchronized. The clutch pedal must be depressed
and tractor motion stopped to change gear ratios with
the main shift lever or the range shift lever.
SECTION 2 - OPERATION
HYDROSTATIC TRANSMISSION (H.S.T.) MODEL

GEAR TRANSMISSION

2-11
19981877
19983654
2
19981864
1
19
20
1
21