MacDon M155, Operator'S Manual

Page: 419 / 510

MAINTENANCE AND SERVICING
Hydraulic Oil Cooler
The hydraulic oil cooler is located inside the cooling box behind the radiator.
It should be cleaned daily with compressed air. Refer to
Cleaning Cooler Box Components, page 360
.
Draining Hydraulic Oil
To drain hydraulic oil, follow these steps:
Hydraulic oil should be changed every 1500 hours or every 2 years.
DANGER
To avoid bodily injury or death from unexpected
startup of the machine, always stop the engine and
remove the key from the ignition before leaving the
operator’s seat for any reason.
1. Park the windrower on level ground, and lower the
header and reel so that the lift cylinders are fully
retracted.
2. Stop the engine and remove the key.
3. Open the hood. Refer to
5.2.3 Opening Hood (Highest
Position), page 307
.
4. Place a clean container (at least 20 US gallons
[75 liters]) under drain at the bottom of the hydraulic
reservoir to collect the oil.
5. Remove drain plug (A) and allow oil to drain.
6. Inspect particles and clean off any metal debris that
may have accumulated on magnetic plug. Wipe plug
with a clean cloth. Check O-ring condition. Look for
cracking, breakage, or deformation that may impede
sealing ability and replace as required.
7. Install drain plug (A), torque 59 ft · lbf (80 N · m).
8. Fill hydraulic oil reservoir, refer to
Checking and Filling
Hydraulic Oil, page 401
.
Figure 5.187: Hydraulic Oil Drain Plug
147649
403
Revision A