Lull 1044C-54 Series II Service Manual - Manual (Page 339)

Transmission
31200079 8-15
Fig. 8-12: Transmission Shift Logic Schematic
Troubleshooting
This section provides an easy reference guide covering the most common
problems that may occur during operation of the transmission.
MV0590
RELA
Y
K12
IGN POWER
RELAY GND
RELA
Y
K1
1
SHIFT T O 1ST
SHIFTER PWR
BOOM OVER 40
RELA
Y
K13
RELA
Y
K14
RELA
Y
K15
RELA
Y
K16
RELA
Y
K17
FOR
W ARD SGN
PLUGGED
BOOM OVER 40 REVERSE SGN RELA
Y GND
PLUGGED PLUGGED IGN POWER PLUGGED
BOOM OVER 20
SOLENOID
Y1
SOLENOID
Y2
SOLENOID
Y3
DASH GND DASH GND SOLENOID
Y6
SOLENOID
Y5
SOLENOID
Y4
PLUGGED PLUGGED PLUGGED
SHIFTER PWR SHIFTER
Y6
SHIFTER
Y3
BOOM 21-40
BOOM OVER 20
N/C
BOOM OVER 40
N/C
IGN POWER
JUMPER 1
BOOM 21-40
SOLENOID Y6
SHIFTER Y6 A
N/C
N/C
IGN POWER
SOLENOID Y1
FORW ARD SGN
N/C
IGN POWER
SOLENOID Y2
REVERSE SGN
RELAY GND
RELAY GND
RELAY GND
RELAY GND
RELAY GND
RELAY GND
JUMPER 2
JUMPER 1
N/C
SHIFTER Y5
JUMPER 2
D5
D4
D3
D1
D2
D6 D7 D8 D9
SHIFTER
Y4
SHIFTER
Y5
NEUTRAL REVERSE FOR
W
ARD
DIRECTION INPUT
FOR
W
ARD
REVERSE NEUTRAL
A
DIRECTION INPUT
RELA
Y
K18
N/C
NEUTRAL A
NEUTRAL
FROM E2.A (SHT 1)
FROM E1.A (SHT 1)
D10
30
87a
87
86
85
87
87a
30
85
86
87
87a
30
85
86
87
87a
30
85
86
87
87a
30
85
86
87
87a
30
85
86
87
87a
30
85
86
D F E B C A C D A B 11 12 10 9 8 7
1 3 7 2 4 6 7 5
6 5 4 3 2 1 B D C A
87a
30
87
86
85