Cat 955L 13x lost my hydraulics and hydro. NEED HELP

You lost the rubber coupling discs between the convertor and the engine. Theres four of them, like hockey pucks.

Thanks for the reply Rome!
Is this the only thing that would cause both things to happen at the same time?

Is this a doable job in a field? I have a service manual for the machine but I can't find what you're referring to.

Thanks again for the help!

[quote="bs15788"]Thanks for the reply Rome!
Is this the only thing that would cause both things to happen at the same time?

Is this a doable job in a field? I have a service manual for the machine but I can't find what you're referring to.

Thanks again for the help![/quote]

Yes, unless the shafts broke but unlikely plus you had the burnt smell of the couplings.
It can be done in the field, have to remove trans/convertor guard and work from underneath. The couplings are between the engine flywheel housing and torque convertor flange.
I can get you the torque for the coupling bolts tomorrow.
Don't understand why Cat didn't use a universal joint instead of those couplings, once they go your done! kinda scary if your on steep hill or working in fire.
Gary

Thanks Gary! I really appreciate the insight! How hard is it to separate the flywheel from the torque converter flange? Will I need to unbolt the engine and slide it forward or no?

Your welcome.
Not hard at all, just remove the nuts and bolts from flanges and the couplings can be removed, the flange will slide a little to get them out. No need to move engine.

Big sigh of relief! My last major project with this machine was replacing all bearings/gears in the right final drive. I don't know if I had another one of those types of projects in me.
So these 4 pucks will just slide right out and then I'll slide new ones in? No special alignment or anything? Do you know what the pucks are called in the parts manual? I have the page open but I want to make sure I order the correct parts.

6P3984 Flex Coupling Drive Group
5S7893 Joint (quantity-4)
If engine to torque converter alignment is off it will eat another set.

Cat will have them in tomorrow. Thank you for the numbers.
Is there an easy was to check the alignment on the torque converter? I looked in the shop manual and it looks like it takes some type of special tool.

80 ft lbs on the nuts and bolts.