Reelmaster 5010 SeriesHydraulic System (Rev. C) Page 4 -- 52
Lift Cylinder Internal Leakage Test
Figure 48
T
C4
P4
C5
C1
C2/3C2/3 L
LEFT
FRONT
RIGHT
FRONT
FRONT
CENTER
REAR
R8
C4 L
C5 L
C1 L
REAR
LEFT
RIGHT
100 MESH
SUCTION
STRAINER
INTERNAL
CASE
DRAIN
P1
P2
P3 P4
G4
SV3
SV1
SV2
R7
SVRV
CV4
CV1
CV5
CV23
PUMP (P5)
TO STEERING
TO MOW CONTROL
(REAR CUTTING UNITS)
(FRONT CUTTING UNITS)
TO MOW CONTROL
FROM MOW CONTROL
MANIFOLD
CONTROL VALVE
CHECK FOR
CYLINDER
(PARTIALLY
RAISED)
LEFT FRONT (#5) LIFT CYLINDER TEST SHOWN
PLUG
LIFT
CONTROL
MANIFOLD
CAP
EXTENDING
The lift cylinder internal leakage test should be per-
formedifacutting unitraiseandlowerproblem isidenti-
fied. This test will determine if a lift cylinder is faulty.
NOTE: Cutting unit raise/lower circuit operation will be
affected by lift cylinder binding, extra weight on the cut-
ting units and/or binding of lift components. Make sure
that these items are checked beforeproceeding with lift
cylinder internal leakage test.
Procedure for Lift Cylinder Internal Leakage
Test:
1. ParkmachineonalevelsurfacewiththePTOswitch
OFF. Position the cutting units in the turn--around posi-
tion and turn the engine off. Apply the parking brake.
2. For the lift cylinder that is to be tested, use a jack to
raise the lift arm slightly. This will remove the load from
the lift cylinder and relieve lift cylinder hydraulic pres-
sure. Leave the jack under the lift arm to support the lift
arm and to prevent the lift arm from lowering.
NOTE: If either of the rear lift cylinders is being tested,
both rear lift arms need to be supported.
3. Thoroughly clean the area around the end of the hy-
draulichoseattherodendoftheliftcylinder.Disconnect
the hydraulic hose from the lift cylinder rod end fitting
(Fig. 49).
To Next Page
Loading...
