Service Manual
| Simpro Multi-Tip | v40.0 | June 2018 | Page 12
4.7
Lowering Valve Solenoid
Testing
I.
The solenoid should make a faint ‘click’ when the ‘Lower’ switch is pressed. If not, the
fault may be either electrical or mechanical. If the wiring is OK, the red coil will be
magnetic when the Raise button is pressed (i.e. small pieces of steel will be attracted to
it).
II.
If the coil does not become magnetic, check the switches and wiring in the control handle.
III.
If the wiring is OK, check the coil itself. Remove the plug, then using a multi-meter in 200-
ohm range, hold a probe on the 2 opposite terminals; it should give a reading of between
6 and 8 ohms.
IV.
If the coil appears to be working properly, remove and check the valve as described in
section 2.4
Removal and Refitting
I.
Undo the knurled nut on the valve stem.
II.
Remove the solenoid coil, noting the orientation.
III.
Replace the correct way around, refit the O-ring and nut. The nut must be tightened
finger-tight only.
Lowering Valve
Solenoid
•
When open, this
electromagnetic valve
allows oil to flow back
into the reservoir,
lowering the cradle
