37
Section 5: Maintenance & Lubrication
2/10/09
ZXT54 & ZXT60 Pro Series Zero Turning Radius Mowers Riding Mowers 357-271M
Land Pride
Hydrostatic Drive System
!
DANGER
Hydraulic fluid under pressure can penetrate skin. Wear
protective gloves and safety glasses or goggles when working
with hydraulic systems. Use a piece of cardboard or wood
rather than hands when searching for hydraulic leaks. If
hydraulic fluid is injected into the skin, it must be treated by a
doctor within a few hours or gangrene may result.
!
WARNING
Always wear adequate eye protection when servicing the
hydraulic system.
The ZXT Pro is equipped with two completely
independent hydrostatic drive systems with each system
consisting of a reservoir, pump and motor.
Access the hydrostatic drive units by lifting the seat
platform which is hinged at the front. To raise the seat,
pull on the seat release latch at the back and tilt the seat
platform up and forward.
Repairs to the hydraulic pumps and motors should be
performed by trained technicians only.
The hydrostatic drive pumps are equipped with bypass
valves that must be opened before moving the mower with
a stalled engine. Refer to “Moving Mower with Stalled
Engine” on page 18 for more information.
Hydraulic Oil Level Check
Refer to Figure 5-8 on page 37:
Hot oil expands, therefore, check hydraulic oil level only
when it is cold. The left side is independent from the right
side. Make sure you check and fill oil as needed on both
sides. Oil level should be about 1/8" deep in the bottom of
expansion tank when cold. Add hydraulic oil to the tank if
no oil is present. Do not overfill. See page 49 for
hydraulic oil specifications.
Hydraulic Reservoir (Left Side Shown)
Figure 5-8
IMPORTANT: Do not use a high pressure washer
on or around the hydraulic pumps and motors. Water
intrusion will result and void the warranty.
Expansion
Tank
Cold Oil Fill Line.
DO NOT OVERFILL
Expansion
Tank Fill Cap
24580
Hydraulic Oil and Filter Change
Each hydraulic pump has its own independent oil
system. Therefore, each pump will require new hydraulic
oil and oil filter. It is best to change oil soon after using
the mower while dirt particles are still suspended in the
oil. See “ZXT Pro (Hydrostatic Transmission
Specifications)” on page 49 for hydraulic oil type and
filter part number.
Initially, change hydraulic oil and oil filters after the first
25 to 50 hours of operation. Thereafter, change hydraulic
oil and filters every 500 hours or every year whichever
comes first. Two filters are required with each oil change.
They may be purchased from your nearest Land Pride
dealer.
Refer to Figure 5-3 & Figure 5-4 on page 35:
Changing instructions are for changing oil on the left side
and then the right side. Both sides can be changed at the
same time if two oil drip pans are available.
1.
Place an oil drip pan beneath drain plug (#39) on the
left side and remove drain plug.
2.
To facilitate drainage, remove expansion tank
cap (#18) and fill plug (#22) from the left side. Allow
oil to drain completely.
3.
Remove left side oil filter (#35) and properly discard.
4.
Once oil has slowed to a slow drip, reinstall drain
plug (#39) and tighten to the correct torque.
5.
Install new oil filter (#35) as follows:
a. Clean mounting surface that filter seats against
with a clean rag.
b. Apply a thin coat of oil to the rubber seal on the oil
filter.
c. Completely fill oil filter with hydraulic oil.
d. Screw new filter on until it makes contact with
metal seating surface.
e. Tighten filter an additional 3/4 to 1 full turn more.
6.
Add hydraulic oil to the left fill hole (#22) until oil
reaches top of hole.
7.
Reinstall left fill plug (#22) and tighten to the correct
torque.
8.
Add hydraulic oil to the expansion tank (#18) until oil
is 1/8" deep in bottom of tank.
9.
Wipe off all excess oil. A degreaser may be needed
to remove excess oil.
10. Reinstall expansion tank cover (#18).
11. Repeat steps 1 thru 10 for the right side.
IMPORTANT: Clean debris from around the drain
plug, fill plug and expansion tank cap before draining
and filling unit with hydraulic oil.
