JLG sky trak mmv Service Manual page 627

Note: The following chart shows which solenoids are
active with any given selection of the transmission shift
control switch (travel select lever) and gear select
position.
Solenoid Valve Y1
Callout (5)
Driving
Speed
Direction
Forward First
Forward Second
Forward Third
Forward Fourth
Reverse First
Reverse Second
Reverse Third
c. Upper and Lower Transmission Valve Body
Solenoid Testing
Inspect the solenoid connector plugs (13 and 18).
Following the chart below, test each pin connection on
the upper transmission valve body connector for
continuity and shorting. Each solenoid should have
between 25.0 and 30.0 ohms of resistance when testing
with an ohm/volt meter. Replace a defective solenoid
valve. (Refer to Section 10.13.8, d. Transmission Upper
Valve Body Solenoid Removal .)
Solenoid Pin
Position Solenoid
1
2
3
7
4
5
6
7
Note: All six solenoids within both upper and lower sole-
noid valve body housings are of the same design.
Model MMV Rev. 12/04
Upper Valve Lower Valve
Body Body
Y2 Y3 Y4 Y5
(6) (7) (10) (11) (12)
• • •
• • •
• • •
• •
• • •
• • • •
• • •
Active Callout
Y1 14
Y2 15
Y3 16
Ground 17
Y4 19
Y5 20
Y6 21
Ground 22
Y6
•
•
•
•
•
Electrical System
15
14
17
20
19
22
16
13
MT1090
21
18
MT1100
10.147