Cub Crafters CC18-180 Pilot Operating Handbook page 366

SECTION 9.11 CUB CRAFTERS
SUPPLEMENTS-WIPAIRE 2100A CC18-180
AMPHIBIOUS FLOATS
9.11.7.4 LANDING GEAR HYDRAULIC PUMPS
A red light marked "PUMP" is provided to warn the pilot
that the hydraulic power pack is running during the time
the gear is in transit. It should shut off automatically after
the landing gear is locked in the selected position. Should
the pump not shut off once the landing gear is locked, the
power can be manually turned off by pulling out the
landing gear circuit breaker. The gear can still be
operated using the power pack by turning the power back
on (pushing the landing gear circuit breaker in) and by
selecting the desired position and again, manually turning
the power off, if necessary.
The pressure switch that activates the hydraulic pump is
also designed to turn on the power pack when pressure
in the system drops below a certain value. Therefore, if
the pump comes on momentarily when turning on the
master switch, or if the red light briefly illuminates during
flight, it means that pressure has fallen and the pump is
coming on to build it up. A sight gauge is provided on the
power pack reservoir and the level should be kept in the
upper 25% of the range. If the pump is running
continuously, it could mean that there is a leak in the
hydraulic system.
REPORT TC10000AFM Issued: 5/31/05
Page Number: 9-11-64 Date of Revision: 009/15/15