Need advice on breaking the nut on a hydraulic line running into the hydraulic control valve on a Komatsu D21A-6 dozer.
I don't know the maintenance history of the dozer. but, i am in the process of servicing the dozer for the following.
1. Removing to service the Hydraulic Control Valve
2. Removing and Replacing the engine Fan blade
3. Replacement of the steering clutches
I have been unable to remove the hydraulic control valve do to the lines connected to it. The Nut and Back Nut are just nut breaking free of one another.
1. Line Nut 30mm
2. Back Nut 26mm
I need specific advice on what steps are best used to break free the lines identified in the photos. As in, specific tool types. Penetrating Oils, Heat and or any other options that are commonly used with heavy equipment.
I have used PB Blaster and my favorite penetrating oil "KROIL" But So far nothing seems to work. I feel like i need specific tools for breaking the nut. (Pictures and Links Requested)
See pictures below.
I don't know the maintenance history of the dozer. but, i am in the process of servicing the dozer for the following.
1. Removing to service the Hydraulic Control Valve
2. Removing and Replacing the engine Fan blade
3. Replacement of the steering clutches
I have been unable to remove the hydraulic control valve do to the lines connected to it. The Nut and Back Nut are just nut breaking free of one another.
1. Line Nut 30mm
2. Back Nut 26mm
I need specific advice on what steps are best used to break free the lines identified in the photos. As in, specific tool types. Penetrating Oils, Heat and or any other options that are commonly used with heavy equipment.
I have used PB Blaster and my favorite penetrating oil "KROIL" But So far nothing seems to work. I feel like i need specific tools for breaking the nut. (Pictures and Links Requested)
See pictures below.