Part No. 40462
DPL-25S • DPL-30S • DPL-35S Super Series
7 - 13
September 2016
Section 7 - Repair Procedures
3-7
How to Check the Resistance
of a Valve Coil
1 Fully lower the platform, turn the machine off
and remove the key.
2 Connect the leads from an ohmmeter to the
valve coil terminals.
Valve coil specifications
Solenoid operated N.O. valve, 10V
5.9 to 7.2
Ω
Lowering valve, 10V
7.8 to 9.5
Ω
(located at base of cylinder)
3-8
How to Test the Motor Start
Solenoid - DC Models
Electrocution/burn hazard. Contact
with electrically charged circuits
may result in death or serious
injury. Remove all rings, watches
and other jewelry.
Electrocution/burn hazard.
Disconnect the ground cable from
the battery before performing this
procedure.
1 Label and disconnect all the wiring from the
motor start solenoid.
2 Connect the leads from an ohmmeter to each
terminal combination and check for continuity.
Test
Desired result
Small post to ground
13 to 17
Ω
2 large posts
no continuity
(infinite
Ω
)
Small post to
no continuity
any large post
(infinite
Ω
)
a
a
b
3 Connect 12V DC to the small post and a ground
wire to the case of the solenoid, then test the
following terminal combinations.
Test
Desired result
2 large posts
continuity (zero
Ω
)
a
high amp power contact terminal
(large post)
b
solenoid activate coil terminal
(small post)
HYDRAULIC POWER UNITS
