2 --- s t e p q u i c k --- s h i f t g e a r s w i t c h i s p l a c e d o n t h e
speed gear lever knob. Figure above shows electric
connection of the switch for Overdrive and for Trac ---
Trol. The switch must function so that the ”tortoi se”
symbol ha s slower speed than the ”hare” symbol .
733
Model Code Page
8. 11. 1990
6000--8750
9440
44. Quick---shift gear, reverse shuttle
and 4WD clutch
2 --- s t e p q u i c k --- s h i f t g e a r
Figure 2 A on previous page:
The pressure oil channel is closed (sol enoid valve dead). The
oil pressure does not act on the quick---shift gear. The lock---
up clut ch (rear) is disengaged and the clutc h for shifting posi-
tion (front) is applied.
The power is transmitted from the sun wheel on the end of the
input shaft to the planet pinions and onwards to the output
shaft,causinganalterationinthereductionratio.Theplanet
pinions rotate around their shafts. Ratio: i=1,256 (Overdrive
i=0,796).
Figure 2 B on previous page:
Current is connected to the solenoid valve so that it opens
pressure channel (1) to the quick---shift gear. The oil pressur e
applies the lock---up clutch so that the planet carri er and input
shaft are connected together. At the same time the oil pres-
sure releases the clutch for shifting position so that the planet
carrier and gear rotate at the same speed as the input shaft.
There is no alterations in the reduction ratio. The planet pin-
ions do not rotate around their s hafts. Ratio i=1,0.
1) Pressure oil (1,8 MPa)
2) Lubricating oil
3) Lubricating and leak---off oil return to gearbox housing
4) Marking on bearing to face outwards.
5) To be packed with universal grease when fitting.
6)Holestocomeinlinewitheachotherwhenfitting.
7) Note! Groove for fitting sun wheel.
8) Note! Arrows to point to centre of sun wheel when fitting.
9)Locatingpin(fixedwithcentrepunchpops).
10) At overdrive the planet pinions are turned in the other di-
rection(numberofteethonsunwheelalteredinasimilar
manner).
Note! If the reduction gear (Trac---Trol)is altered intooverdrive
version, the planet pinions must be turned and the input shaft
with sun gear (front) must be changed. Also the other loose
sun gear (rear) must be changed (number of teeth, see figure
2).
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