Service And Maintenance; External Maintenance; Service And Maintenance Procedures; Fluids - Hydro-Gear ZT-2800 Service And Repair Manual

SERVICE AND MAINTENANCE

External Maintenance

Regular external maintenance of the transaxle
should include the following:
1. Check the vehicle operator's manual for the
recommended load ratings. Insure that the current
application does not exceed load rating.
2. Check oil level in accordance with "Fluid Change
Procedure," step 12. Refer to page 11.
3. Inspect the vehicle drive belt, idler pulley(s),
and idler spring(s). Insure that no belt slippage can
occur. Slippage can cause low input speed to the
transaxle.
4. Inspect the vehicle control linkage to the direc-
tional control arm on the transaxle. Also insure that
the control arm is securely fastened to the trunnion
arm of the transaxle.
5. Inspect the bypass mechanism on the transaxle
and the vehicle linkage to insure that both actuate
and release fully.
Service and Maintenance Proce-
dures
Some of the service procedures presented on
the following pages can be performed while the
transaxle is mounted on the vehicle. Any repair
procedures as mentioned in the repair section of
this manual must be performed after the unit has
been removed from the vehicle.
1. Use of components for purpose of repair other
than Genuine Hydro-Gear parts must be pre au-
thorized in writing by Hydro-Gear to be eligible for
warranty consideration. Use of non-genuine Hydro-
Gear parts could damage the product or cause it to
not operate properly or fail prematurely.
2. Repairs or installation by personnel other than as
authorized by Hydro-Gear must be pre authorized
by Hydro-Gear in writing to be eligible for warranty
consideration.
3. Hydro-Gear does not provide warranty cover-
age for defects or damages caused by the use of
unauthorized parts or service.
ZT-2800 /ZT-3100 /ZT-3200
® ® TM

Fluids

The fluids used in Hydro-Gear products have
been carefully selected, and only equivalent, or
better products should be substituted.
Typically, an engine oil with a minimum rating of 9.0
cSt (55 SUS) at 230° F (110° C) and an API clas-
sification of SL is recommended. A 20W50 engine
oil has been selected for use by the factory and is
recommended for normal operating procedures.
"All fluids should be handled and disposed of
according to local, state, and federal regula-
tions."

Fluid Volume and Level

F l u i d v o l u m e i n f o r m a t i o n i s p r o v i d e d i n
the table below. Total system volume will depend
on expansion tank size, hose length and transaxle
volume.
Certain situations may require additional fluid to
be added or even replaced. Refer to page 10 and
figure 5 for the proper fill port location.
Purging will be required if oil has been changed.
Refer to the purging procedures on page 12.
Fluid Description
20W50 engine oil
ZT-2800/ZT-3100/ZT-3200
Correct oil volume is determined by characters 7 and 13 of
the model number. (Z*-****-X***-***X*)
CHAR 7 CHAR 13
3,4,5,6 L,R,X
7,8,A,E
L,R,X
9,B,D,K
T
S,T,U,W
Note:
The oil volume figure shown does not in-
clude what is in the expansion tank hose
or the expansion tank. That will have to be
determined by the machine manufacturer/
end user due to varying hose sizes/lengths
and expansion tank sizes.
Oil Volume
70.3 oz - 2079 ml
71.9 oz - 2126 ml
56.6 oz - 1674 ml
9