Transmission Oil Filter Change; Purging The Air From The Hydraulic System - Ferris ISX2200 Series Operator's Manual

1. Locate the transmission oil tanks (B, Figure 33) by raising
the seat plate of the unit.
2. Check the oil level when the unit is cold. The oil should be
up to the "FULL COLD" mark (A) on the transmission oil
tanks (B). If the oil is below this level, proceed to step #3.
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3. Before removing the tank cap (C), make sure that the
area around the tank cap and fill neck of the tank is free
of dust, dirt, and other debris. Remove the tank caps.
4. Add oil up to the "FULL COLD" mark.
5. Re-install the tank cap.
6. After adding oil to the tanks, it may be necessary to purge
air from the hydraulic system. If the unit is not driving
properly perform the Purging the Air from the Hydraulic
System procedure.

Transmission Oil Filter Change

Change Interval: Every 400 Hours or Yearly (Initial hydraulic
oil and filter change after first 100 hours of operation).
Filter Part Number: 5104385X1
Note: Removing the oil filter from the transaxle will drain the
oil tank. Have a suitable container ready to catch any spilled
oil. The manufacturer recommends that this be a dealer-only
service item.
1. Locate the hydraulic oil filter on the side of the transaxle.
2. Remove the oil filter cover (A, Figure 34) from the
transaxle to drain the oil. Remove the O-ring (B) from the
cover and discard the O-ring.
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3. After the oil has drained from the transaxle, remove the
oil filter (C) from the transaxle housing.
4. Install a new filter and a new O-ring onto the filter cover
and install the filter cover. Torque the filter cover to
480-580 in-lbs (54.2 - 65.5 Nm).
5. Remove the top oil fill vent port (D) and fill the transaxle
with new 20W50 motor oil through the expansion tank
until the oil reaches the oil fill vent port.
6. Install the top oil fill vent port plug and continue filling
the system with oil until the fill line is reached in the
expansion tank.
7. Repeat this process for the other side of the machine.
8. Perform the Purging the Air from the Hydraulic System
procedure.
Purging the Air from the Hydraulic
System
Due to the effects air has on efficiency in hydraulic drive
systems, it is critical that it be purged from the system.
These purge procedures should be implemented any time a
hydraulic system has been opened to facilitate maintenance
or any additional oil has been added to the system.
The resulting symptoms of air in the hydraulic system may be:
• Noisy operation.
• Lack of power or drive after short term operation.
• High operation temperature and excessive expansion of
oil.
Before starting, make sure the transaxles/transmissions are
at the proper oil levels. If it is not, fill to the specifications
outlined in the Check / Fill Transmission Oil Level procedure.
Purging Air from the Hydraulic System:
1. Chock the front wheels to prevent the unit from rolling.
Raise the rear of the unit so that the unit's rear tires do
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