Gravely 989003, Руководство по обслуживанию

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6.7 TRANSMISSION IMPLEMENT
PRESSURE CHECK
NOTE: Make sure the hydraulic system is serviced
properly prior to starting a pressure check.
1. Clean around the pipe plug on the top of the
transmission. Remove the pipe and install a
pressure gauge (1000 psi minimum) into the
charge pressure port. See Figure 20.
2. Start the unit and run until the hydraulic fluid has
reached the running temperature. Cycle lift lever
control slowly to insure that the system is bled and
hydraulic hoses are full of fluid.
3. Increase the unit to full RPM and move the lift lever
control to the raise position and hold.
NOTE: If the unit won’t hold a steady pressure, trouble
shoot the system to find the cause. If the pressure
reads lower than the specified pressure needed shim
the charge port by installing shims (shim package part
number 031613). The shim package consists of
assorted shim thicknesses. Use caution, when shim-
ming up the pressure not to exceed 1000 psi. The thin-
nest shims (0.10") will raise the system approximately
100 psi. If multiple shims are needed, use a thicker
shim as opposed to two or more thin shims.
4. Once the correct pressure has been established,
shut down the unit and remove the pressure gauge
and install the pipe plug.
6.8 SUNSTRAND TRANSMISSION
REMOVAL
1. Disconnect and remove battery negative terminal
first, for access to the right side transmission
mounting bolts and spacers.
2. Place an 8 quart (7.6 L) drain bucket under the
transmission. Disconnect the oil suction hose from
the bottom of the transmission and drain.
NOTE: Units equipped with four-wheel drive assist:
a.Mark and disconnect the two hydraulic hoses
from the manifold at the bottom of the
transmission. See Figure 21.
b. Disconnect the two yellow leads at the reverse
override switch. See Figure 22.
3. Loosen the flywheel U-joint at the rear of the
transmission.
CAUTION: If shimming is required to reach
the proper implement pressure, be sure to
shut down the unit prior to removing the
charge pressure cap. The hydraulic system is
under high pressure and can cause serious
injury if the cap is removed with the unit
running.
Figure 20
1. Pressure Gauge (1500 psi)
2. Charge Port, Spring and Relief Valve Cone Figure 21
1. Mark one of the hoses and transmission
2. Screen Bolts
Figure 22
1. Reverse Override Switch
2. Flywheel U-Joint
3. PTO Drive Shaft