SVL90-2 Start Up and Throttle Up Procedure

[NPD]

Hello everyone. I am wondering what the startup procedure is on an SVL90-2 before it can be throttled up to governor speed and used. The owner's manual does not spell it out completely for me. I do not own this equipment and am genuinely curious. Also, is there a warm up period needed before throttle can be increased?

Is this correct...Sit on seat, ignition key on, wait for glow plug indicator to go out, crank to start, put down armrests, push hydraulic unlock switch, push parking brake switch off, increase throttle and move?

Thank you for your help. I do appreciate it!

 

[Midwest]

I pulled this out of the "Cold Start" section of the OM. You can also cycle the loader & bucket functions while sitting still to help warm-up the hydraulic oil.

"Let the engine warm up after start-up for approx. 10
minutes under no load conditions. If the hydraulic fluid
temperature is too low, the operations or the function
of the pressure sensors will be affected.
Do not operate the machine under full load before the
engine has warmed up enough."

This is kind of a double edged sword, if you idle the machine for prolonged periods of time the DPF will fill up with soot quicker but a proper warm-up especially in cold temps is important. Equally as important is the shut-down of the machine, throttle it down before shutting the key off.

As far as your operating procedure that is the correct steps to moving the machine.

 

[NPD]

Thank you for posting that! I saw that in the OM as well, but here is where I get confused from the "Starting the Engine" section just before it (Not cold start):

Start the engine in the following manner:

1. Before starting the engine, make sure that the armrests are in the "Raised" position and the control levers are in their neutral position and the seat belt is fastened correctly.

2. Set the accelerator lever 1/2 way forward and keep the accelerator pedal free.

3. Insert the key into the starter switch and turn it to the "RUN" position. The glow lamp will light up while the engine is preheated and will go out automatically after preheating is finished.

4. Make sure the "OIL " and "BAT " marks appear on the instrument panel. If not, the system is malfunctioned. Contact your local dealer.

5. Turn the key to the "START" position and release after the engine has started.

6. Check if all warning lamps (except hydraulic lock lamp and parking brake lamp) have gone out. Should a warning lamp still be lit up, stop the engine then remove the key and check for the cause.

I am wondering at what point after these steps can the throttle be increased? Are the arm rests up or down? And why is the accelerator lever set halfway forward? Thank you!

 

[greenacresnorth]

normally you can start at whatever throttle setting you want. only time ive seen anything different is on newer Cummins engines, if you pump the throttle 5 or 6 times with key on but engine not running it will set a DTC.

 

[Midwest]

I think anytime after the starting procedure is completed you can raise the throttle where you want it. (With or without doing a warm-up procedure) You can raise the throttle with the arm rests up or down with the hand throttle.

"In order to protect the engine, its rpm may fail to rise in
some cases. (Up to 3 minutes)"

This is out of a SVL95 OM, to the best of my knowledge the 90's didn't have the electronic governor on the throttle like the new machines have since the 90's have a mechanical throttle control.

My procedure before I run a SVL (or any skid loader)

Start Engine
Warm-up for 5~minutes (climb out of machine)
(Climb in machine) Lower arm rests, activate hydraulics, turn off parking brake
Start moving machine while gradually increasing throttle up to full throttle

 

[NPD]

Thank you greenacresnorth and Midwest! That is exactly what I was looking for!

Of note, the SVL90-2 has an electronic APPS on the foot pedal with a mechanical lever on the side of the Meter (IP) to maintain RPM. The throttle control is handled over the 500 kbps CAN bus.

Thanks again!

 

[NPD]

Following up on this...

I went to a Kubota dealer today and they let me test on an SVL90-2 they had on the lot.

I discovered if the machine is in proper running order and no faults (which this machine was in proper running order), the engine can be started from outside the cab and immediately throttled up, even with cold 24 deg F hydraulic fluid and 58 deg F coolant temp.

The Parking Brake, Hydraulic Unlock, OPC (seat) and Left and Right Armrest switch positions did not matter.

Thank you to those who took the time to respond and those who read this.

 

[Bulldog]

I had a Cat loader that was never moved without being warmed up even in the summer. When it was replaced I had 28,000 hrs on original engine and turbo. It ran as good as new and didn't burn a drop of oil between changes. None of the other operators would warm up and the most any of them got without repair was 14K.

I'm a firm believer that proper warm up is the key to long equipment life.

 

[NPD]

Thanks for the response, Bulldog! I totally agree, warming up the engine is always a best practice.

Reason for my post was to determine the preconditions for the engine being throttled up. I needed to know for a project I was working on.

 

[FarmerJerry]

Bulldog, seriously 28000hours? How many machines was this engine installed in?

 

[Bulldog]

It was a 97 model Cat 980 G. We kept it around for a spare for a couple years. Last count I had was about 31,000 and still running strong. Lost track after it left my quarry.

 

[lugbolt]

Some of the newer machines have the ECU programmed where the throttle is basically nonresponsive for a certain amount of time. The reasoning behind this is that when the engine's cold/off, you hit the starter, go full throttle. It takes a minute for oil to reach the turbo. Well that particular turbo spins at a maximum of around 253,000 RPM shaft speed. It needs clean, pressurized oil to stay alive; without it it lasts maybe 30 seconds before it self-destructs, sends parts of the compressor wheel and housing through the engine, damages the engine and then you're out a ton of money and a pain in the backside to get the engine out, repair it, then reinstall it.

Yes...let it warm up a while

 

[SidecarFlip]

It was a 97 model Cat 980 G. We kept it around for a spare for a couple years. Last count I had was about 31,000 and still running strong. Lost track after it left my quarry.

I wasn't going to comment as the thread was a bit old but the produce farmer down the road has a 4020 Deere that is his personal unit and the hour meter has rolled over at least once and the engine has never been apart.

My dealer always comments that neither of my Kubota's at 2500 hours are even 'broke in' yet. I fully expect them to outlast me and then retain an excellent selling price..

Why I bought them in the first place. Long term investment.