Jacobsen HR5111 Service And Repair Instructions page 162

SECTION 8Q. HYDRAULIC FIELD TEST PROCEDURES
MOWER SYSTEM (See Figure 8Q-5)
The mower circuits can be divided into three separate
circuits. Mower pump section 1 supplies oil to motor
control valve. Then to right wing motors.
Mower pump section 2 supplies oil to a motor control
valve. The motor control valve controls the left wing.
Mower pump section 3 supplies oil to the front motor
control valve. Then to the front three motors.
1. Isolate which circuit, front, right wing, or left wing,
having the problem.
2. With the ignition and implement (mower) switches
ON, engine not running, and the reel directional
switch in CUT, check the plastic connector on the
motor control valve, the red LED should be on.
•
If the red LED is on, proceed with Step 3.
•
If the red LED is not on an electrical problem
may exist, see Section 10.
DANGER
KEEP CLEAR OF REELS.
3. With the tractor running push the manual override
button on the inside of the solenoid valve.
•
If the mower comes on and runs at a normal
speed the solenoid may be faulty.
•
If the mowers do not come on, a pump may be
faulty, perform an instrument test, see Section 8S.
•
If the mower or mowers run slow, proceed with
Step 4.
8Q-6
HYDRAULICS