MAINTENANCE PROCEDURES
HYDRAULIC PRESSURE SETTINGS
GAUGE
PORT
1 (G1)
MAIN
PUMP
PRESSURE
Location: Test port 1 (A). Behind the right hand rear side screen.
Hydraulic pump (B). Under the transmission cover.
Adjuster (C).
On the hydraulic pump.
To
Check: Attach a pressure gauge to test port 1 (A). Start
the engine.
Do
not operate any controls. The
pressure reading should be as follows:
TH644C
TH842C
TH844C
3000
PSI
3000
PSI
3000 PSI
ToAdjust: Remove the acorn nut from the adjuster (C). Loosen
the
jam
nut and turn the allen head adjusting screw
clockwise to increase the pressure and counter-
clockwise to decrease the pressure. Retighten the
jam
nut. Replace the acorn nut.
GA
UGE
PORT
1 (G1)
SERVICE
BRAKE
ACCUMULATOR
Location: Test port 1 (A). Behind the right hand rear side screen.
To
Check: Attach a pressure gauge to test port 1 (A). Start
the engine. Do not operate any controls. Apply
and release the service brakes a few times. With
the service brakes released, shut down the engine.
The pressure reading should be as follows:
TH644C
TH842C
TH844C
3000
PSI
3000
PSI
3000
PSI
ToAdjust: Not adjustable.
If
the pressure drops below 2000
PSI
after a period
of
two minutes, troubleshoot the
brake circuit.
5-25
A
B c
To Next Page
Loading...
