SkyTrak 6036 Service Manual - Manual (Page 178)

Section 9 Hydraulic System
9-28 Model 6036/6036T S/N 9B0500 thru 14833
2. Operate the hydraulic controls after the engine
has stopped to relieve any trapped pressure. 1. Check the de-clutch with the park lock en-
gaged.
2. With the park lock engaged, the transmission
must remain in neutral when transmission
selection is shifted to "forward" or "reverse".
The service brakes should be tested whenever
repairs or adjustments are made to components of
the circuit.
1. Start the engine, park the forklift on level
ground and level the frame.
2. Check for signs of leakage of hydraulic oil
from circuit hoses and other components.
Correct any leakage problem before testing.
3. Bleed the brake system as described in
paragraph 9.6.3.g if necessary.
4. Park the forklift on level ground and engage
the park lock.
5. Check service brakes with brakes at room
temperature. Select second gear and fully
apply service brakes. Switch park lock to
"disengaged" position. The forklift must not
move when engine is brought up to full throttle
while transmission selector is shifted to either
"forward" or "reverse".
6. If the service brakes do not meet performance
requirements, refer to Troubleshooting,
paragraph 9.8 and locate the cause of the
problem and correct before putting the vehicle
into service.
The park lock should be tested whenever repairs
or adjustments are made to park lock components.
1. Start the engine, park the forklift on level
ground and level the frame.
2. Check park lock with 6000 lbs. on forks.
3. Park up-grade on 30° ramp, shift transmission
to neutral, engage the park lock and release
service brakes, the forklift must not roll.
4. If the park lock test does not meet perform-
ance requirements, refer to Troubleshooting,
paragraph 9.8 and locate the cause of the
problem and correct before putting the vehicle
into service.
Warning
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
5. Install a pressure gauge capable of measuring
0-1000 psi (0-68,9 bar) on the park lock
bleeder fitting, Fig. 9.15.
6. Start the engine and allow it to idle.
7. Depress the brake pedal and continue to hold
until a pressure gauge reading is taken at a
service brake.
8. Place the park lock switch in the disengaged
(down) position and check the pressure gauge
reading at the park lock bleeder fitting.
9. Both pressure gauge readings should read
525 ±25 psi (36,2 ±1,7 bar). If not, adjust the
pressure reducing valve, turning the adjust-
ment screw clockwise to increase or counter-
clockwise to decrease pressure.
10. Stop the engine and place the park lock switch
in the engaged (up) position. Operate the
hydraulic controls after the engine has stopped
to relieve any trapped pressure.
11. Remove the pressure gauges and tees from
the service brake and park lock and reconnect
the hydraulic lines.
12. Install the transmission cover after adjustment.
c. Testing
The de-clutch should be tested whenever repairs
or adjustments are made to components of the
circuit.
3. Remove the transmission cover from the
frame.
4. Install a tee and pressure gauge capable of
measuring 0-1000 psi (0-68,9 bar) on a
service brake, Fig. 9.15.
Before starting the engine be sure all hydraulic
connections are tight and all tools are removed
from the forklift.
Warning