JLG 4017PS Service Manual - Manual (Page 143)

8-11 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
Hydraulic System
8.7 HYDRAULIC RESERVOIR
The hydraulic reservoir (1) is located on the rear of the
cab.
8.7.1 Hydraulic Oil Reservoir Draining
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower 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.
3. Open the engine cover. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. Remove the lower cover of the reservoir.
6. Open the filler cap on the hydraulic oil reservoir.
Remove the drain plug (2) on the bottom of the
hydraulic oil reservoir.
7. Transfer the used hydraulic oil into a suitable
covered container, and label as "Used Oil". Dispose
of used oil at an approved recycling facility. Clean
and reinstall the drain plug. Torque drain plug to
35 Nm (25 lb-ft).
8. Wipe up any hydraulic fluid spillage in, on, near and
around the machine and the work area.
8.7.2 Hydraulic Oil Reservoir Filling
1. Be sure the reservoir is clean and free of all debris.
2. Install a new hydraulic oil filter.
3. Fill the reservoir with oil until oil level is visible in the
lower gauge window (3). Refer to Section 2.5,
“Fluids, Lubricants and Capacities.”
4. Install the lower cover of the reservoir.
5. Properly connect the battery.
6. Close and secure the engine cover.
7. Start machine and check all hydraulic functions for
proper operation. Check for any hydraulic oil leaks.
Shut machine OFF and check hydraulic oil level. If
oil is warm, oil level should be visible in the upper
gauge window (4). Add hydraulic oil if necessary.
8. Remove the Do Not Operate Tag from the ignition
key switch and the steering wheel.
8.7.3 Hydraulic Oil Reservoir Removal/
Installation
If it is determined that the hydraulic oil reservoir must be
removed, the hydraulic oil must be drained before the
reservoir is removed. Always dispose of hydraulic oil
properly.
a. Reservoir Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower 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.
3. Open the engine cover. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. Remove the lower cover of the reservoir.
6. Drain the hydraulic oil reservoir. Refer to Section
8.7.1, “Hydraulic Oil Reservoir Draining.”
7. Label, disconnect and cap all hydraulic hoses
attached to the hydraulic oil reservoir. Cap all fittings
and openings to keep dirt and debris from entering
the hydraulic system.
8. Remove the bolts securing the hydraulic oil reservoir
to the frame.
9. Remove the hydraulic oil reservoir.
MAM0180
1
2
3
4