739
Model Code Page
6000--8750
15440
44. Quick---shift gear, reverse shuttle
and 4WD clutch
1. 11. 1998
1. 4. 1997
3 --- s t e p q u i c k --- s h i f t g e a r ( D e l t a
Powershift), transmissions 300,
460
Note! See picture 6 on previous page.
Delta Powershift is a 3---step quick---shift gear and it is of a
planetary gear type. It has three multi---disc clutches, o ne
for reduction ratio, one for overdrive ratio and one for the
planetary gear carrier for a direct ratio. All clutches are cont-
rolled with aid of pressure oil from the low pressure pump.
Solenoid valves are fitted on the servo valve block on the
LH side of the gewarbox.
Gear ratios, transmission 300 (450):
--- reduction ratio 1:1,233
--- overdrive 1:0,803
--- direct ratio 1:1
Gear ratios, transmissions 460 and 650
--- direct ratio 1:1
--- overdrive 1:0,811
--- overdrive 1:0,651
When all three cl utches are unpre ssurised (e.g. if current is
switched off with the starter switch or if the clutch pedal is
depressed), the unit is in the neutral position.
1a) Pressure oil to multi---disc clutch C1.
1b) Pressure oil to multi---disc clutch C2.
1c) Pressure oil to multi---disc clutch C3.
2. Lubricating oil.
3. Return of lubricating oil and leak oil into the gearbox hou-
sing.
4. Needle bearing number side (hardened side) o utwards.
5. To be filled with universal grease when assembling.
6. When unscrewing planetary gear carrier attaching bolts,
the planet gears can be in such a position that they prevent
unbolting. In this case, pump up pressure with a hand
pump into the clutch C3 after which the planetary gear
carrier can be rotated to the other position.
Important! Apply locking fluid Loctite 243 to the threads of
the planetary gear carrier bolts (6) in connection with repair
works.
Tightening torque of the bolts (6):
--- 8.8, 23 Nm (earlier)
--- 10.9, 35 Nm (latest)
Tighten the bolts progressively. Picture below shows the
correct tightening order.
7. Planet gears are divided into classes (A ---E). The letter
markingisstampedonthesideofeachplanetgear.Theall
threeplanetgearsshouldhavethesameletter.Sparepart
planet gears are delivered as a ready---made kit which
includes three planet gears with same letter markings.
8. The planet gear letter markings must point towards the
sun gear midpoint when assembling the planetary gear.
9. The two push buttons of the 3---step quick---shift gear are
fitted in the speed gear lever knob.
10. When the planetary carrier is locked, lubricating oil is
allowed to flow through the tension pins into the planet gear
shafts and further into the planet gears.
Note! The tension pins must be knocked a little deeper
than the planetary carrier surface to facilitate free flow of
lubricating oil.
11.Thereisapianowireundertheintermediateringloc-
king ring. See repair instructions for more detail.
12. Lock valve, see page 420/20B.
13 Springs (6 off), 8200---8400; 668103--- (transmission
460).
14. Holes must align
.
Modifications of Delta Powershift
At the beginning of the manufacture, the DPS was c ontrol-
led with the 3---position rocker switch in the speed gear
lever knob and there were no pilot lights at all.
From the beginning of 1994 (662343---) the DPS was cont-
rolled with two push buttons in the speed gear lever knob.
In addition, there was a separate pilot light panel on the RH
side of the instrument panel (see under code 311, AC II).
From the beginning of March 95 (668103---), the pilot lights
were moved into the dash board in connection with the
other pilot and warning lights. At the same time, the DPS
control unit was changed, see under code 312 ( AC 2.1). In
connection with ratio altering (transmission 460), a lock
valve has been added onto the DPS piping, see page
420/20B. In addition, on 8200---8400 tractors (668103---,
transmission 460) the planetary carrier clutch has six
springs against the clutch piston (see picture on previous
page and see also repair instructions under code 444).
From spring ---96 the DPS gear has been reinforced in
transmission 650, see pages 440/15A and 15B.Tractors
8450---8750 and 8050---8150 with effect from ser. no.
F32104 have transmission 650. 6600---6800 have transmis-
sion 650 from tractor number G01401 incl.
In connection with HiTech Shuttle, the DPS gear was chan-
ged a little, see pages 15C and 15D.
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