151
Model Code Page
37. Autocontrol 5 / 5.2
1. 8. 2000
370 24I
6250--8950
1. 9. 2002
D. Test---run, AC 5 and 5.2
HiTech ---tractors shall be test---run always after repair works
and,whennecessary,alsoinconnectionwithfaulttracing:
Before the test--run:
-- If the tractor has been repaired, carry out all points in the
test mode; all functions must be OK before the test---run.
-- If the fuel injection pump or its linkage has been repaired
or adjusted, cal ibrate the gas pedal position sensor B15
-- If one of the DPS or shuttle proportional valves has been
changed, the resetting of the shuttle and the DPS pre--- fill-
ing time and initial pressure indexes must be done.
-- If a new AC 5 / 5.2 control unit (A1) has been fitted or it is
reprogrammed, carry out the following settings in the set-
ting mode FIII:
--- driving speed parameter, temperature and driving speed
units
--- calibration of the clutch pedal and gas pedal sensors
--- resetting of the pre --- filling times and initial pressure in-
dexes of shuttle, DPS and PTO.
Test-- run, general:
--- t e s t --- r u n t h e t r a c t o r o n a s a f e p l a c e , n o t I N T R A F F I C
--- observe the display unit during the test---run; if a fault
code appears, repair the fault and carry out a new test---run
--- if a minor fault appears during the test---run, the control
unit shows a fault code in the display; often driving can be
continued but clutch pedal must be used when starting
driving and when the driving direction is c hanged.
--- If a serious fault appears during the test---run, the control
unit prevents driving or using PTO to prot ect the trans-
mission against break---downs
--- Check, that the HiTech display shows near the same
driving speed as the AD---instrumentFunctio n of the safety
systems:
Safety sy stem
--- Start prevention: try to start the engine with shuttle lever
in positions F ---R ---N ---P (clutch pedal depressed); the en-
gine is allowed to start only in P--- position (parking brake
applied), and the engine is not allowed to start, if the clutch
pedal is in the upper position
--- Driver detection (in the seat): stand up from the seat,
after 7…10 seconds engage direction F (speed gear en-
gaged, clutch pedal up); The tractor is not allowed to move,
and the direction arrow in the display starts to blink, (to con-
tinue driving: sit on the seat, move the shuttle lever to pos.
P and engage after that the driving direct ion). AC 5.2: the
delay of the seat switch is 30 sec, if the clutch pedal has
been depressed.
--- Emergency brake system: switch off current with the
ignition switch (driving speed max. 2 km/h for the safety);
the parking brake must engage after a while.
Function of the parking brake (HiBrake):
--- Drive below 4 km/h (below 2 km/h in program versions
42, 43, 60, 62), apply parking brake: parking brake must
engage after a while
--- D r i v e a t a s p e e d o f 5 …6 km/h, apply parking brake; the
parking brake must engage just when the driving speed
has dropped below 4 km/h (below 2 km/h in program ver-
sions 42, 43, 60 and 62).
--- The parking brake must disengage (engine running) in
the shuttle lever positions N ---F ---R Function of HiShift func-
tion:
Function of HiShift
---Start driving (several times) by using the HiShift button,
the tractor must start to move with even acceleration (not
jerks or long delay)
--- D r i v e a h e a d o v e r 1 0 k m / h , c h a n g e g e a r s 1 --- 2 --- 3 --- 4 b y
using HiShift buttons (without clutch pedal); traction must
again continue when the HiShift button is released.
Function of the clutch pedal:
--- Start driving slowly with the clutch pedal: traction must
engage evenly without a sharp jerk
--- Start driving faster with the clutch pedal : the tractor must
start to move without delay.
--- Start to move by allowing the pedal rise fast to the top
position (slip foot to one side on the pedal). In this case the
automatics take care of a smooth start.
Function of the reverse shuttle:
--- When the engine is running (shuttle lever in pos. P) en-
gage gear H1
--- Move the lever to pos. N ; the shuttle must further be in
neutral
--- Start driving forwards by moving lever to pos. F (without
clutch pedal); repeat many times
--- Start driving rearwards by moving lever to pos. R, repeat
many times
--- Compare starts with the shuttle lever and the HiShift ---
button. They must function with the same speed.
--- Drive below 10 km/h forwards, move then the lever to
R ---position (hand gas lever 1200…1500 rpm); the driving
direction change must start immediately (shut tle brakes)
and the R ---direction must engage smoothly but fast, when
the tractor is almost stopped
--- D r i v e o v e r 1 0 k m / h f o r w a r d s , m o v e t h e n t h e l e v e r t o R ---
position (hand gas lever 1200…1500 rpm); the driving
direction change must start at a speed of about 10 km/h.
Function of DPS, manual mode:
--- Turn the DPS ---rocker switch to ”man” –position (front
edge depressed), change during driving DPS speeds with
buttons in the gear lever knobs, use also engine revs be-
tween 1700…2000 rpm; the speeds should engage without
sharp jerks and without any long delay
--- Change quickly with double---click 1=>3 and 3=>1;
although the display do es not show the speed 2 , the DPS
speed must change via speed 2.
--- Turn the DPS rocker switch to pos. ”Auto1” (
AUTO 1 in
display); test by driving in M---range that the DPS changes
speed when the loading varies (use an implement if
necessary), Auto1 –program tries to keep the engine revs
high
--- Turn the DPS---switch to pos. ”Auto2” (
AUTO 2 in dis-
play); drive with range gear H and ensure that the DPS
changes speed when the driving speed varies, Auto 2 al-
lows larger engine rev variations than Auto1. In AC 5.2 the
AUTO 2 functions with fixed revs and is adjustable, see
page 371/4.
--- Turn the DPS ---switch to pos. ”man”, pre---program the
DPS speeds F II / R III, carry out driving direction changes
(without the clutch pedal); the correct, pre---programmed
DPS speed should engage in both driving directions.
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