Maintenance

[Gearstix]

We just purchased two used T50 lift trucks. They both have around 5-6000 hours on them.

Both have the 1404 engine. One is running fine; however we suspect that it will need a headgasket or something as it smells like coolant.

The other, will not fire. The propane solenoid valve was replaced with a working unit, the plugs, wires, and distributor cap have been replaced aswell.

Maybe it is off timing? I've found a spec sheet online but we are not sure if the number on cylinder is next to the fan or next to the transmission.

Any help at all would be appreciated.

The spec sheet says the firing order is 1-3-4-2, is this correct? It says the timing is 14* BTDC, is this also correct?

Message Edited by Gearstix on 06-25-2009 09:50 AM

[amer_27606]

Hello Gearstix,

If you give me the serial number of the engine, I may be able to help you.

Regards,

amer_27606

[Gearstix]

Hello,

The solid tire truck is a T50, the pneumatic one is V50.

The engine serial for the V50, is V40-20003.

If you need any more information let me know.

Thanks.

[amer_27606]

Hello Gearstix,

If your engine is a gasoline engine, you will need to step up the ignition timing at 6 BTDC at low idle rpm.  For LP Fuel engine, the BTDC at low idle rpm should be 14.  Furthermore, Dual Fuel engine at low idle rpm should be 6 BTDC.

Yes, the firing order is 1-3-4-2 and cylinder no 1 is on the front of the engine close to the fan.

Hope this helps!

Good luck,

amer_27606

[amer_27606]

Hello again,

Please, note that you need to be sure to check and set Dual Fuel ignition timing on gasoline fuel.  Dual Fuel engines timing must be 6 degree BTDC.  If the engine is to be run LP Fuel for a long period of time, the timing can be adjusted to 14 degree BTDC for better performance.  When the fuel is changed back to Gasoline, the timing must be 6 degree BTDC.  If the timing is at 14 degree BTDC on Gasoline fuel for a long time, the pistons will be damaged.

Hope this solves your issue.

Please, let me know how it goes.

Regards,

amer_27606

[Gearstix]

Hello,

Both forklifts are LPG only.

My dad took the regulator off the running forklift, the T50 as it has a fairly new mixer, solenoid valve and regulator.

The V50 backfired. Dad thinks its firing on the exhaust stroke. 

The V50 was running when we bought it, then it shut off and started missing. Dad put a new cap and rotor button on, and bought a wireset.

He forgot to mark the wires.

Thanks for your help. 

[Gearstix]

We are still unable to get the V50 to fire,although we haven't had much time to fool with it.

[amer_27606]

Hello Gearstix,

For the backfired one, have you checked the intake and exhaust valve lash; meaning valve adjustment?

As far as the misfiring one cocnerns, you probably have wrong firing order.  The new cap should have some indication for cylinder # 1.  If you know the direction of rotation of the distributor,  it will be easy to trace the wirings.

Hope this helps!

amer_27606

[Gearstix]

See, the strange thing is, the store we bought the forklift off was using it until they brought it to the lift truck dealer. It would've cost too much money to overhaul the forklift. They wanted to replace all the hydraulic lines and stuff like that, however they don't leak. So we bought it from them. We had it running at the lift truck dealer, and it was running here at our shop too, then it stalled and we started to check over stuff. The plugs, wires and cap have been replaced. Both motors in the two forklifts haven't been touched internally, never been open. They both have about 5000-5500 or so hours on them.

I don't think the cap has any sort of indication of which one is plug one. It may be hard to see?

I think if I remember right, looking at the distributor side of the motor, it spins clockwise.

We tried setting it up like the other forklift was setup, firing order and such, and it still didn't go. I don't see why it would be anything internal.. We haven't opened the motors.

[amer_27606]

Have you checked the compression ratio for all cylinders?

amer_27606