Pump & Wheel Motor

[puppypaws]

mowerconsultant,

What application is a #788042 pump and a #789339 wheel motor used in by Hustler? I was wondering if it was the ATZ and Super Z HT model mowers.

If they are used in these two applications, what makes the difference that the ATZ is a 9 mph mower and the Super Z HT is an 11 mph machine?

Thanks

[mowerconsultant]

The 788042 pump is used on our Super Z's including the HT and ATZ models it is a 21cc Hydro Gear pump.
The 789339 wheel motor is used on the ATZ and HT Super Z's only and is a White RC-26 wheel motor.
Your question is a good one, I am assuming it is a linkage adjustment, but I will ask those in the know and find out for you.

Pj

[puppypaws]

The 788042 pump is used on our Super Z's including the HT and ATZ models it is a 21cc Hydro Gear pump.
The 789339 wheel motor is used on the ATZ and HT Super Z's only and is a White RC-26 wheel motor.
Your question is a good one, I am assuming it is a linkage adjustment, but I will ask those in the know and find out for you.

Pj

We are trying to figure this out!

This change was done in 2005, long before I heard anything about a HT model. I was not aware of Hustler using two differant hydro systems on the ATZ units. I was told that my unit would be much slower and was expecting more torque than what I got. I have never demoed the ATZ unit to see the differance. But then again, if I demoed an ATZ unit that is set up the same as my unit, there would be no differance. Ever sence I had my unit changed, I have never understood How Hustler could advertise the ATZ as the best hill machine on the market because mine still needed more torque. I got rid of my steep properties so my unit is adiquite.

[djagusch]

Any info for us on this. Mid season I will be looking at a Super Z with a 72" deck. I'm thinking about going the HT option but if it brings it down to 9mph I might need to rethink things.

[mowerconsultant]

Any info for us on this. Mid season I will be looking at a Super Z with a 72" deck. I'm thinking about going the HT option but if it brings it down to 9mph I might need to rethink things.

I have to follow up on this myself, I have been traveling and havent kept up, sorry.

Pj

[puppypaws]

I have to follow up on this myself, I have been traveling and havent kept up, sorry.

Pj

All information I've seen states the HT is an 11 mph mower, and I feel assured it is. I also feel the ATZ is a 9 mph mower as stated, only trying to understand what causes the difference with both having the same pumps and wheel motors.

[blackandgold]

HT models are designed for use in extreme conditions.
Consult with your dealer to assure this is the model for your needs.

[gene gls]

HT models are designed for use in extreme conditions.
Consult with your dealer to assure this is the model for your needs.

Where does the ATZ fit in when you say the HT is for " extream conditions"? Last I knew the ATZ was the extream machine and the HT was inbetween the regular Super Z and the ATZ.

[puppypaws]

Where does the ATZ fit in when you say the HT is for " extream conditions"? Last I knew the ATZ was the extream machine and the HT was inbetween the regular Super Z and the ATZ.

The ATZ is considered Hustlers extreme slope, (hillside mower). The HT series was designed for a person in need of more torque where slope mowing (not extreme slopes of 15+ degrees), is done on a regular basis.

I mow flatter property where the 15 mph mowing speed can be utilized a large percentage of the time. The difference being; if I mowed grass 75 miles or more west of my location the lower speed high torque mower would be my machine of choice. This is because you have now moved into totally different terrain where your mower is constantly in a strain trying to maneuver steep slopes.

The Super Z hydraulics have a problem holding up under these conditions. This is how the HT model came into existence, more pulling power from increased torque with a beefed up cooler running hydraulic system.