Service Manual

20 ZT-2800
®
/ZT-3100™/ZT-3400™
TEAR DOWN AND REASSEMBLY
How to Use This Manual
Each subassembly illustrated in this manual is
illustrated with an exploded view showing the
parts involved. The item reference numbers
in each illustration are for assembly instruc-
tions only. See pages 42-45 for part names
and descriptions. A complete exploded view
and item list of the transaxle is provided at the
end of the repair section.
General Instructions
Cleanliness is a primary means of assuring
satisfactory life on repaired units. Thoroughly
clean all exposed surfaces prior to any type
of maintenance. Cleaning of all parts by us-
ing a solvent wash and air drying is usually
adequate. As with any precision equipment,
all parts must be kept free of foreign material
and chemicals.
Protect all exposed sealing surfaces and open
cavities from damage and foreign material. The
external surfaces should be cleaned before
beginning any repairs. Do not use a pressure
washer to clean the transaxle.
Upon removal, it is recommended that all seals,
O-rings, and gaskets be replaced. During
installation lightly lubricate all seals, O-rings
and gaskets with a clean petroleum jelly prior
to assembly. Also protect the inner diameter of
seals during installation by covering the shaft
with a cellophane or plastic wrap material. Be
sure all remnants of this covering are removed
after servicing.
Parts requiring replacement must be replaced
from the appropriate kits identied in the Items
Listing, found at the end of this manual. Use
only original Hydro-Gear replacement parts
found at www.hydro-gear.com or at your Hydro-
Gear Central Service Distributor.
IMPORTANT: When internal repair is per-
formed on the transaxle, the oil lter must be
replaced.