Service Manual

TEST NO. 3: Checking Wing Deck Counterbalance Pressure
Wing Deck Counterbalance Pressure
1. Make sure hydraulic oil is at normal operating tem-
pe
rature by operating machine for approximately 10
minutes.
2. Lower cutting units, engage parking brake and stop
th
e engine.
3. Install a 1000 PSI gauge into the wing decks coun-
terbalance quick disconnect fitting.
4. Start the engine, move throttle to full speed
(3000 RPM) and observe gauge.
2
1
Figure 12
TESTER READING: 350 - 400 PSI (oil at normal
operating temperature)
1. Wing deck counterbalance test port
2. Wing deck counterbalance relief valve (non-adjustable)
NOTE: The wing deck counterbalance valve is not
adjustable.
Testing P
age 4 - 22
Rev. A
Groundsmaster
®
455-D