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Hustler Raptor SD Hysraulic Oil

#1

M

MLM

Trying to refill hydraulic oil through reservoir on 48 inch Hustler Raptor SD. Drained oil and replaced filters.Poured about 2/3 of a quart of oil in reservoir and it will not go down. Any suggestions?


#2

T

Tta197

You have to remove the Allen head plug towards the top of each Hydro-gear so the oil in the reservoir will flow down. You'll need about 4 1/2 quarts of oil. You will know when each of the Hydro-gears are full when oil starts to overflow out of the Allen head plug port. I usually leave about an 1/8 of an inch of oil in the reservoir when I put the plugs back on.

Don't put too much oil in the reservoir when you're done servicing it, about 1/8" to 1/4" is all you need to see in the reservoir. The oil will expand when it's hot and start fill up the reservoir.


#3

M

MLM

Tta197 said:
You have to remove the Allen head plug towards the top of each Hydro-gear so the oil in the reservoir will flow down. You'll need about 4 1/2 quarts of oil. You will know when each of the Hydro-gears are full when oil starts to overflow out of the Allen head plug port. I usually leave about an 1/8 of an inch of oil in the reservoir when I put the plugs back on.

Don't put too much oil in the reservoir when you're done servicing it, about 1/8" to 1/4" is all you need to see in the reservoir. The oil will expand when it's hot and start fill up the reservoir.
Click to expand...

Thanks!


#4

D

dkocian

If you don't mind my asking, what size allen wrench is used to fit the Top Port Plug? Also, any suggestion on how to get to it? I have busted every knuckle trying to get an allen wrench in to the plug.


#5

T

Tta197

I used a 1/4" Allen on a socket style bit with a ratchet and an extension.

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#6

D

Doug44

dkocian said:
If you don't mind my asking, what size allen wrench is used to fit the Top Port Plug? Also, any suggestion on how to get to it? I have busted every knuckle trying to get an allen wrench in to the plug.
Click to expand...

This is what I did I removed the deck to get into it from the front. I was very concerned the first time I serviced these hydro drives trying to figure out the correct size wrench and to get it squarely and deeply inserted into the plug heads. You don't even want to think about stripping these plug heads you will never get them out !! Also my right hand side plug and filter were both put on by a gorilla :thumbdown::thumbdown: . What should only be a 1/2 hr job the first time turned into more like 4 hrs. At least I didn't strip the heads and all ended well. I am also glad I bought a 5 qt jug of oil as i used most of it despite the specs that say 4qts. Good luck, take your time and if you are like me about half way through this job the dealer charge to do this was starting to look good hawr :laughing:


#7

T

Tta197

Sounds like it worked out well for you Doug, nice job.
FYI though, I removed the plugs from the rear; used an extension, ratchet and socket/Allen bit. I went in between the drive belt for the deck blades. :smile:


#8

D

Doug44

Tta197 said:
Sounds like it worked out well for you Doug, nice job.
FYI though, I removed the plugs from the rear; used an extension, ratchet and socket/Allen bit. I went in between the drive belt for the deck blades. :smile:
Click to expand...

Yes your way is the best way IMO however for the first time to make 100% sure I had the correct size wrench and get the best visual on the plug I found the front afford me the best view. Also the thread I replied too he mentioned skinning up his hands etc and there are less sharp objects coming in from the front.

Not something I like doing but my dealer gets $65 for in city pickup (I live less than 2 mi from his business) plus he had the parts marked up over 2x what I could get them on the web, in addition I am sure at least $100 labor for this job. I would like to support him and after questioning him on the price of the filters $29.95 ea he and I struck an compromise $14.95 ea and I went ahead and bought a oil filter and Kaw syn oil from him at a fair price.


#9

G

Good 1 Brian

Doug44 said:
This is what I did I removed the deck to get into it from the front.

Was it necessary to remove the deck ? I ask the dealer when I purchase my Raptor last month about removing the deck , he suggested on zero turn mowers if it's not necessary not to remove it .
Click to expand...


#10

T

Tta197

I used this filter I bought on Amazon for under $11 made in the USA for the hydrogears. Stens 120-738 Exmark 109-3321 Transmission Filter. Sorry, you'll have to copy and paste it.


#11

D

Doug44

Good 1 Brian said:
Doug44 said:
This is what I did I removed the deck to get into it from the front.

Was it necessary to remove the deck ? I ask the dealer when I purchase my Raptor last month about removing the deck , he suggested on zero turn mowers if it's not necessary not to remove it .
Click to expand...

Please read my post again your question is answered there.
Click to expand...


#12

K

Kremeneon

So I changed my hydraulic fluid this weekend.

All was going well until I got to those socket head fill plugs, WHAT A PITA! They are in about the most difficult to access area of the mower.

So I found a better way...

Vacuum fill the hydros. I have a hand pumped vacuum/suction device for extracting oil and transmission fluids on cars. it uses a hand piston pump to remove air from a plastic container, to which a suction hose is attached. The pump and check valve can be removed from the container for cleaning. it turns out the pump just barely fits over and covers the opening in the hydraulic reservoir on the RSD.

So with the hydros empty and new filters in place I filled the reservoir up about 3/4 of the way and sat my pump on top, gave it a few pumps and saw a lot of air gurgle up from the transmissions through the fluid. I removed the pump and within a couple seconds the reservoir was empty, all fluid having been drawn into the hydros. I repeated this until they were full. It took maybe 10 minutes total.


#13

B

bertsmobile1

Kremeneon said:
So I changed my hydraulic fluid this weekend.

All was going well until I got to those socket head fill plugs, WHAT A PITA! They are in about the most difficult to access area of the mower.

So I found a better way...

Vacuum fill the hydros. I have a hand pumped vacuum/suction device for extracting oil and transmission fluids on cars. it uses a hand piston pump to remove air from a plastic container, to which a suction hose is attached. The pump and check valve can be removed from the container for cleaning. it turns out the pump just barely fits over and covers the opening in the hydraulic reservoir on the RSD.

So with the hydros empty and new filters in place I filled the reservoir up about 3/4 of the way and sat my pump on top, gave it a few pumps and saw a lot of air gurgle up from the transmissions through the fluid. I removed the pump and within a couple seconds the reservoir was empty, all fluid having been drawn into the hydros. I repeated this until they were full. It took maybe 10 minutes total.
Click to expand...

OOOh I like that.
Another rolled gold tip to keep in the warchest.:thumbsup:


#14

D

Doug44

Kremeneon said:
So I changed my hydraulic fluid this weekend.

All was going well until I got to those socket head fill plugs, WHAT A PITA! They are in about the most difficult to access area of the mower.

So I found a better way...

Vacuum fill the hydros. I have a hand pumped vacuum/suction device for extracting oil and transmission fluids on cars. it uses a hand piston pump to remove air from a plastic container, to which a suction hose is attached. The pump and check valve can be removed from the container for cleaning. it turns out the pump just barely fits over and covers the opening in the hydraulic reservoir on the RSD.

So with the hydros empty and new filters in place I filled the reservoir up about 3/4 of the way and sat my pump on top, gave it a few pumps and saw a lot of air gurgle up from the transmissions through the fluid. I removed the pump and within a couple seconds the reservoir was empty, all fluid having been drawn into the hydros. I repeated this until they were full. It took maybe 10 minutes total.
Click to expand...

The socket head fill plugs you speak of are not fill plugs, but air plugs. You fill in the resivor tank under the seat.


#15

K

Kremeneon

Doug44 said:
The socket head fill plugs you speak of are not fill plugs, but air plugs. You fill in the resivor tank under the seat.
Click to expand...
Yes, fill/vent/port, the bit the big arrow here is pointing to:
ZT2800fill.jpg


#16

B

Bigmks

Kremeneon said:
So I changed my hydraulic fluid this weekend.

All was going well until I got to those socket head fill plugs, WHAT A PITA! They are in about the most difficult to access area of the mower.

So I found a better way...

Vacuum fill the hydros. I have a hand pumped vacuum/suction device for extracting oil and transmission fluids on cars. it uses a hand piston pump to remove air from a plastic container, to which a suction hose is attached. The pump and check valve can be removed from the container for cleaning. it turns out the pump just barely fits over and covers the opening in the hydraulic reservoir on the RSD.

So with the hydros empty and new filters in place I filled the reservoir up about 3/4 of the way and sat my pump on top, gave it a few pumps and saw a lot of air gurgle up from the transmissions through the fluid. I removed the pump and within a couple seconds the reservoir was empty, all fluid having been drawn into the hydros. I repeated this until they were full. It took maybe 10 minutes total.
Click to expand...

where can I find something like this to purchase?


#17

K

Kremeneon

Bigmks said:
where can I find something like this to purchase?
Click to expand...


This is the device I have: https://www.amazon.com/gp/product/B000GU0MMU

a mightyvac type device would work, or even my shop-vac if I could adapt it to seal off well enough to the filler to pull some air out.


#18

B

Bigmks

Kremeneon said:
This is the device I have: https://www.amazon.com/gp/product/B000GU0MMU

a mightyvac type device would work, or even my shop-vac if I could adapt it to seal off well enough to the filler to pull some air out.
Click to expand...

I have a few questions. First of all to drain the hydraulic fluid you would need to loosen each hydro filter and let the oil drain completely out correct? The drain plug you are referring to is just the plug to allow air so that the oil can flow back through to the hydros? After fluid has drain, replace filters and add oil into the reservior under the seat? Aother question when would you use the hydro oil extractor?


#19

B

Bigmks

Bigmks said:
I have a few questions. First of all to drain the hydraulic fluid you would need to loosen each hydro filter and let the oil drain completely out correct? The drain plug you are referring to is just the plug to allow air so that the oil can flow back through to the hydros? After fluid has drain, replace filters and add oil into the reservior under the seat? Aother question when would you use the hydro oil extractor?
Click to expand...

Or can I use the extractor and place it under the seat and use it to suck fluids out of hydraulic reservoir? I've never used. I've seen a few examples of YouTube with and oil extractor.


#20

L454S

L454S

Draining the pumps is not a problem since the filters are changed too and that's where the oil drains out, what is the pump going to do? Filling is done through the reservoir, all you need to do is crack loose the plugs you show so the unit can vent air out as the fluid fills the pump. It ain't rocket science.


#21

B

BoisDarc

Kremeneon said:
So I changed my hydraulic fluid this weekend.

All was going well until I got to those socket head fill plugs, WHAT A PITA! They are in about the most difficult to access area of the mower.

So I found a better way...

Vacuum fill the hydros. I have a hand pumped vacuum/suction device for extracting oil and transmission fluids on cars. it uses a hand piston pump to remove air from a plastic container, to which a suction hose is attached. The pump and check valve can be removed from the container for cleaning. it turns out the pump just barely fits over and covers the opening in the hydraulic reservoir on the RSD.

So with the hydros empty and new filters in place I filled the reservoir up about 3/4 of the way and sat my pump on top, gave it a few pumps and saw a lot of air gurgle up from the transmissions through the fluid. I removed the pump and within a couple seconds the reservoir was empty, all fluid having been drawn into the hydros. I repeated this until they were full. It took maybe 10 minutes total.
Click to expand...

I really appreciate this post. I had trouble removing one of those plugs so I used the hand piston pump to remove the air. Ingenious! :thumbsup:


#22

K

Kremeneon

BoisDarc said:
I really appreciate this post. I had trouble removing one of those plugs so I used the hand piston pump to remove the air. Ingenious! :thumbsup:
Click to expand...

:drink:


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