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Reelmaster 7000 Hydraulic SystemPage 4 -- 73
Charge Hydraulic System
NOTE: Wheninitially starting the hydraulic system with
new or rebuiltcomponents such as pumps, motors or lift
cylinders, it is important that the hydraulic system be
charged properly. Air must be purged from the system
and its components to reduce the chance of damage.
IMPORTANT: Change hydraulic oil filter whenever
hydraulic components are repaired or replaced.
1. Parkmachine ona levelsurface.Lower cuttingunits,
stop engine and engage parking brake. Remove key
from the ignition switch.
2. Make sure all hydraulic connections, lines and com-
ponents are secured tightly.
3. Ifcomponentfailurewassevereor thesystemiscon-
taminated, flush and refill hydraulic system and tank
(see Flush Hydraulic System in this section).
4. Make sure hydraulic reservoir is full. Add correct hy-
draulic oil if necessary.
5. Disconnect wire harness connector from engine run
solenoid to prevent the engine from starting.
6. Check control rod to the piston (traction) pump for
proper adjustment, binding or broken parts.
7. Make sure traction pedal is in the neutral position.
Turn ignition key switch to start and engage starter for
ten (10) seconds to prime the traction and gear pumps.
Let starter cool and then repeat cranking procedure
again.
8. Connect wire harness connector to engine run sole-
noid.
WARNING
Beforejacking upthemachine, reviewandfollow
Jacking Instructions in Chapter 1 -- Safety.
9. Raise one front and one rear wheel off the ground
and place support blocks under the frame. Chock re-
maining wheels to prevent movement of the machine.
10.Make sure traction pedal is in neutral. Start engine
and run it at low idle (1550 RPM). The pumps should
pick up oil and fill the hydraulic system. If there is no in-
dication of fillin thirty (30) seconds, stop the engine and
determine the cause.
11.After the hydraulic system starts to show signsof fill,
actuate lift control switch until the lift cylinder rods move
in andout severaltimes. Ifthe cylinder rods donot move
after fifteen (15) seconds or the pump emits abnormal
sounds, shut the engine off immediately and determine
cause or problem. Inspect for the following:
A. Loose filter or suction lines.
B. Blocked suction line.
C. Faulty charge relief valve.
D. Faulty gear pump.
12.Once lift cylinders do move, proceed to step 13.
13.Operate thetractionpedalin theforwardand reverse
directions. The wheels off the ground should rotate in
the proper direction.
A. If the wheels rotate in the wrong direction, stop
engine and inspect hydraulic line placement at pis-
ton (traction) pump and wheel motors. Correct hy-
draulic line installation before proceeding.
B. If the wheels rotate in the proper direction, pro-
ceed with procedure.
14.Adjust traction pedal to the neutral position.
15.Check operation of the traction interlock switch.
16.Stop engine, remove blocks from frame and lower
machine. Remove chocks from remaining wheels.
17.If the piston (traction) pump or a traction motor was
replaced or rebuilt, run the machine so all wheels turn
slowly for ten (10) minutes.
18.Operate machine by gradually increasing its work
load to full over a ten (10) minute period.
19.Stop the machine. Check hydraulic reservoir and fill
ifnecessary.Check hydrauliccomponents for leaksand
tighten any loose connections.
Hydraulic
System