MAINTENANCE AND SERVICING
Checking Charge Pump Pressure
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.
Incorrect charge pressure setting s may result in the inability to build re qu ired syste m press ure and/or inadequate
loop flushing flows.
Correct charge pressure MUST be maintained under all conditions to maintain pump control performance and to
operate the brake release.
Check charge pum p pressure as follows :
1. Open hood fully. Refer to 5.2.3 Opening Hood (Highest Position), page 307.
2. Attach a 0–600 psi (4000 kPa) pressure gauge to a hose that is long enough to allow pressure gauge to be read
from the operator’s seat.
3. Locate the test port (A) which is located on the charge
filter head. Clean test port fitting and attach hose to
the fitting.
4. Start engine and leave at idle. Pressure should be
240–325 psi (1655–2241) kPa) with the hydraulic oil
at 100°F (40°C) minimum.
5. Note reading and shut down windrower.
6. If pressure is NOT within this range, contact your
MacDon Dealer.
7. Otherwise, remove hose from test port and close the
hood. Refer to 5.2.4 Closing Hood (Highest Position),
page 308.
Figure 5.198: Charge Pump Test Port
147649 410 Revision A
To Next Page
Loading...
