SkyTrak 6036 Service Manual - Manual (Page 173)

8-21 6036, 6042, 8042, 10042, 10054
Hydraulic System
7. Install the four previously removed nuts securing the
hydraulic filter assembly to the hydraulic reservoir.
Torque the nuts to 75 lb-in (8.5 Nm).
8. Wipe up any hydraulic fluid spillage in, on, near and
around the machine and the work area.
8.5.4 Hydraulic Oil Reservoir Replacement
The hydraulic reservoir and the fuel tank are one unit and
are removed together. Refer to Section 7.6.2, “Fuel/
Hydraulic Oil Tank,” for information on hydraulic
reservoir/fuel tank replacement.
8.6 HYDRAULIC SYSTEM PUMP
For internal service instructions contact your local
authorized service distributor.
8.6.1 Pump Replacement
a. Pump Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, raise the boom, place
the transmission control lever in (N) NEUTRAL,
engage the park brake and shut the engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel, stating that the
machine should not be operated.
3. Temporarily block up or support the raised boom.
4. Open the rear door. Allow the system fluids to cool.
5. Properly disconnect the battery.
6. Drain the hydraulic reservoir. Refer to Section 8.5.1,
“Hydraulic Oil Reservoir Draining.”
7. Thoroughly clean pump (3) and surrounding area,
including all hoses and fittings before proceeding.
8. Label, disconnect and cap the hydraulic hoses
attached to the pump.
9. Remove the bolts, lockwashers and washers
securing the pump to the transmission. Remove the
o-ring located between the transmission and the
pump. Wipe up any hydraulic oil spillage.
10. Remove the hydraulic fittings from the pump to use
for later installation.
Note: Before removing any fittings from the pump, note
their orientation to ensure correct installation.
Note: DO NOT disassemble the operating pump. The
pump is pre-set from the manufacturer. Any adjustments
or repairs performed by anyone other than an authorized
dealer could void the warranty.
b. Pump Installation
1. Install the fittings on the pump in the same
orientation as noted during removal.
2. Place the pump and a new, oiled o-ring into position
on the transmission. Align the pump shaft with the
internal transmission gear, so that the machined
teeth mesh together.
3. Align the bolt holes with the pump mount holes.
Secure the pump to the transmission with the
previously used hardware.
4. Uncap and connect the previously labeled hydraulic
hoses to their appropriate locations.
5. Fill the hydraulic reservoir. Refer to Section 8.5.2,
“Hydraulic Oil Reservoir Filling.”
6. Prime the pump by filling the case drain port with fresh,
filtered hydraulic oil from a clean container before
installing the case drain connector and hose.
7. Check all routing of hoses and tubing for sharp
bends or interference with any rotating members. All
tube and hose clamps must be tight.
8. Properly connect the battery.
9. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
10. Close and secure the rear door.
11. Start engine and run at approximately one-third to
one-half throttle for about one minute without moving
the machine or operating any hydraulic functions.
12. Inspect for leaks and check all fluid levels. The
hydraulic reservoir oil level must be to the middle of
the sight gauge.
c. Pump Test
1. Refer to Section 8.3.1, “Pressure Checks and
Adjustments.”
MH6490
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