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
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