BAGTIC
Silver Member
28 HP? The latest Aegis has 31 HP.
Re-engine a 425?
- Thread starter Abitnutz
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BAGTIC
Silver Member
The last time I poured oil into my car it sure looked like it was liquid.
bubenberg
Platinum Member
- Joined
- Mar 21, 2002
- Messages
- 942
- Location
- Bucks County, PA
- Tractor
- PT425, Kubota L2050, 3 hydrostatic Exmark mowers. Z21D Kubota ZTR, 2 Kunz acrease wing mowers, 1 rough cut kunz mower, one vintage grasshopper ztr, one vintage gravely ztr, various large garden tracto
Our experience with this engine is very good. We have it on several of our commercial mowers. Some of our competitors switched to the liquid cooled engine and their repair failure rate has gone up drastically.
pequeajim
Platinum Member
I'm not saying to change the engine mind you, but the Vanguard engine is very reliable and requires little maintenance. I never had a problem starting it either.
I have had both the 26.5 HP diesel and 31 HP gas and was very happy with both.
Ventrac uses these engines in their tractors as well as the 31 HP Turbo Diesel.
Nice engines... /forums/images/graemlins/laugh.gif
I have had both the 26.5 HP diesel and 31 HP gas and was very happy with both.
Ventrac uses these engines in their tractors as well as the 31 HP Turbo Diesel.
Nice engines... /forums/images/graemlins/laugh.gif
RegL
Platinum Member
"AC, or LC, you still have to get rid of the same amount of heat! I vote for a more efficient hydraulic oil cooler before trying to find space for a radiator! It’s the hydraulics that are running way too hot on the PT-425, not the engine!! One of my next projects is to find a way to lower the hydraulic oil operating temperature on the PT-425."
I'll second what fourteen said. Operationally, the 1430 is also effected more by high hydro fluid temps than engine temps.. So much so, I plan on switching over to synthetic by spring. If theirs room for another radiator, I vote for another hyd oil cooler.
I'll second what fourteen said. Operationally, the 1430 is also effected more by high hydro fluid temps than engine temps.. So much so, I plan on switching over to synthetic by spring. If theirs room for another radiator, I vote for another hyd oil cooler.
J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
Hydraulic cooling problems.
Has anyone had any major problems with hydraulic oil temp? You know they {PT] have been running these systems for many years. While the oil tank on your machines maybe too hot to touch, that may not be too hot for normal operation. Consider this, if you touched your automatic transmission on your car, I bet it would be to hot also. Just about all automatic transmissions have coolers, and some have extra coolers.
If you want extra cooling, another radiator linked in series or parallel could work, if you have the room. Even one of those small car radiators with the fan attached would work, and would double or triple the cooling capacity.
Has anyone had any major problems with hydraulic oil temp? You know they {PT] have been running these systems for many years. While the oil tank on your machines maybe too hot to touch, that may not be too hot for normal operation. Consider this, if you touched your automatic transmission on your car, I bet it would be to hot also. Just about all automatic transmissions have coolers, and some have extra coolers.
If you want extra cooling, another radiator linked in series or parallel could work, if you have the room. Even one of those small car radiators with the fan attached would work, and would double or triple the cooling capacity.
johara1
Platinum Member
you are right,auto trans. cool by running the fluid through the hot water in the rad.you can add a cooler if you do a lot of heavy stuff.try putting your hand on the hyd. tank of a 992g in the summer after 8 or 10 hrs. of work. the pt. after a heavy day of work isn't even close /forums/images/graemlins/laugh.gif they at pt did their homework /forums/images/graemlins/cool.gif
RegL
Platinum Member
</font><font color="blue" class="small">( Hydraulic cooling problems.
Has anyone had any major problems with hydraulic oil temp? You know they {PT] have been running these systems for many years. While the oil tank on your machines maybe too hot to touch, that may not be too hot for normal operation. Consider this, if you touched your automatic transmission on your car, I bet it would be to hot also. Just about all automatic transmissions have coolers, and some have extra coolers.
If you want extra cooling, another radiator linked in series or parallel could work, if you have the room. Even one of those small car radiators with the fan attached would work, and would double or triple the cooling capacity. )</font>
Your correct as long as you don't include hill climbing as normal operation. When the hyd oil is cool all wheels seem to pull evenly and traction is good. When the oil gets very hot and your driving up hill, one or both front wheel will get spinning and the rear wheels don't seem to be doing anything. It's like, cool oil= 4wd and hot oil+1 or 2wd. I think the oil pt uses in the hydraulics looses it's viscosity at high temps and passes through the wheel motors under heavy load. Thats why I'm going to change over to synthetic. Some folks here have mentioned that synthetics hold their viscosity at higher temps. May also find a spot for that extra cooler your talking about.
Has anyone had any major problems with hydraulic oil temp? You know they {PT] have been running these systems for many years. While the oil tank on your machines maybe too hot to touch, that may not be too hot for normal operation. Consider this, if you touched your automatic transmission on your car, I bet it would be to hot also. Just about all automatic transmissions have coolers, and some have extra coolers.
If you want extra cooling, another radiator linked in series or parallel could work, if you have the room. Even one of those small car radiators with the fan attached would work, and would double or triple the cooling capacity. )</font>
Your correct as long as you don't include hill climbing as normal operation. When the hyd oil is cool all wheels seem to pull evenly and traction is good. When the oil gets very hot and your driving up hill, one or both front wheel will get spinning and the rear wheels don't seem to be doing anything. It's like, cool oil= 4wd and hot oil+1 or 2wd. I think the oil pt uses in the hydraulics looses it's viscosity at high temps and passes through the wheel motors under heavy load. Thats why I'm going to change over to synthetic. Some folks here have mentioned that synthetics hold their viscosity at higher temps. May also find a spot for that extra cooler your talking about.
BobRip
Elite Member
I have a 25% slope on my property. When the transmission oil is cool, the PT422 climbs the hill easily. When it has warmed up for a while it really struggles to get up the hill. I have to do the PT wiggle (steer left and right) to climb the hill. I am running Mobil 1 15W50 in the transmission. I cannot say that it helps or hurts performance. Hopefully this will at least extend the life. Time will tell.
johara1
Platinum Member
what i think your said is leading up to the real problem.the wheel motors don't have enough torque or you don't have high enough pressure, this one can be fixed /forums/images/graemlins/smirk.gif i don't have that much of a problem on the hills with a 422 /forums/images/graemlins/laugh.gif
