Hydraulic
System
Rev. F
Reelmaster 6500-D/6700-D Hydraulic SystemPage 4 - 51
Charge Hydraulic System
Note: When initiallystarting the hydraulic systemwith
new or rebuilt components such as motors, pumps, 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. Park machine on a level surface,and turn the engine
off.
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).
4. Make sure hydraulic reservoir is full. Add correct oil
if necessary (see Check Hydraulic System Fluid).
5. Disconnectelectricalconnectorfromrun (ETR)sole-
noid.
6. Make sure traction pedal and the lift control lever are
in the neutral position. Turn ignition key switch; engage
starter for fifteen (15) seconds to the prime pump. Allow
starter to cool and then repeat this step again.
7. Connect electrical connector to run (ETR) solenoid.
8. Make sure traction pedal and lift control lever are in
neutral. Start engine and run it at low idle of 1150 rpm.
The charge pump shouldpick upoil and fillthe hydraulic
system. If there isno indication of fill in30 seconds,stop
the engine and determine the cause.
9. After the hydraulic system starts to show signs of fill,
actuate lift control lever until the lift cylinder rod moves
in and out several times. If the cylinder rod does not
move after 10 to 15 seconds, or the pump emits abnor-
mal sounds, shut the engine off immediately and deter-
mine cause or problem. Inspect for the following:
A. Loose filter or suction lines.
B. Loose or faulty coupler on the pump.
C. Blocked suction line.
D. Faulty charge relief valve.
E. Faulty charge pump.
10.Adjust traction pedal to the neutral position (see Ad-
just Traction Drive for Neutral).
11.Check operation of the traction interlock switch (see
Check Interlock System in Chapter - 5, Electrical Sys-
tems).
12.If the traction pump or a wheel motor was replaced
or rebuilt, run the traction unit so all wheels turn slowly
for 10 minutes.
13.Operate traction unitby gradually increasing its work
load to full over a 10 minute period.
14.Stop the machine. Check tank and fill if necessary.
Check hydraulic components for leaks and tighten any
loose connections.
