Morris C2 Contour - Hydraulic System Trouble Shooting

Maintenance
6-20 August 2014 C2 Contour Air Drill
Opener Maintenance - Continued
Hydraulic System Trouble Shooting
If pressure can not be maintained in the hydraulic
system, or openers drop rapidly from transport position,
a leaky hydraulic cylinder (bypassing oil across the
piston seal) may be present. To locate a hydraulic leak
in the Contour Air Drill hydraulic system, the following
procedure can be used:
1. Remove pressure from the hydraulic system.
2. Check the drill frame and hoses to make sure that
the leak is not external (leaking oil out of the circuit).
3. Lift the contour openers into their raised position.
4. Lock the hydraulic ball valve marked “OPENERS”.
5. Watch the openers carefully across the drill and
locate the rst opener(s) to visibly drop down from
the raised position (NOTE: This is the general area
of the leaking cylinder, but the rst opener to drop
is not always the leaking cyinder.).
6. Unlock the “OPENERS” hydraulic ball valve and
lift the openers to the raised position and lock the
hydraulic remote in the raised position to apply ow
to the circuit for about ve minutes.
7. Let the hydraulic remote go back to neutral, shut off
the tractor, and then go and check the temperature
of the opener cylinders by feeling the cylinder
barrels. Start at the group of cylinders that were
located in step 5) and then work from the outer
openers in to center until a “hot” cylinder is located.
8. Under normal conditions the cylinders should
remain cool (ambient temperature or slightly above);
the opener with a “hot” cylinder barrel has the leaky
seal and should be serviced or replaced.
NOTE: All hydraulic cylinders have a natural
leakage rate. The openers on the contour
drill will drop over a long period of time
during storage; this is normal. Only check
for leaky cylinders if accumulator system
pressure drops rapidly during operation
or openers drop rapidly from transport in a
short period of time.
S44355
UNLOCKED
OPENERS
LOCKED
DECAL - S44355
Valve Locations
OPERATING
VALVE
PRESSURE
ADJUSTMENT
OPENERS
BALL VALVE