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I have a 320c Cat excavator which has been standing for a
Hi I have a 320c Cat excavator which has been standing for a little over 18months and now it won't swing the boom left or right … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,306 satisfied customers
I have a cat 312cl excavator and when turning the machine
I have a cat 312cl excavator and when turning the machine the swing arm brake engages suddenly and jerks hard. Any ideas would be appreciated.… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,306 satisfied customers
My 315 cl all the sudden will not rotate at all everything
My 315 cl all the sudden will not rotate at all everything else works. It doesn't even try to rotate or make a noise even … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,306 satisfied customers
I have a cat 312bl that will swing sometimes but not other
I have a cat 312bl that will swing sometimes but not other times till i get it broken free … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,306 satisfied customers
I have a komatsu pc120-6 serial number 52024 that the swing
I have a komatsu pc120-6 serial number 52024 that the swing brake won't release I wonder if any one had a wiring schematic for the swing brake operation or info… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
Komatsu Excavator, Model. PC40R-8. Serial 30749. My
Komatsu Excavator, Model. PC40R-8. Serial 30749. My joysticks will not work. Blade works, travel, and the swing boom. Fuse? Solenoid? Where should I start? I have no owners manual so IDK where the fus… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
I have a similar problem right now with a cb534d not moving
Hi I have a similar problem right now with a cb534d not moving front or back. Have done the handle calibration with success. But still have the 5-2 flash code. Neutral fault. I would like to know how … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
I am working on a Caterpillar excavator model 245B
Hello, I am working on a Caterpillar excavator model 245B ser#6MF00035 and I am having issues with the pressures on hydraulic pumps. When I lift the boom and bottom it out at full idle I read a pressu… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
257b cat panel lights stay on and tail lights solenoid on
257b cat panel lights stay on and tail lights solenoid on right joy stick gets very hot has power to it when cat is shut of also open and shut bucket is not working solenoids all check out ok found a … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
I have a 2004 caterpillar 287b track machine. Joystick
I have a 2004 caterpillar 287b track machine. Joystick control. When going forward, I let go of joystick to center position to stop and the machine comes to a stop but also turns to the right. Then it… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
Well i just bought another excavator and run it for two hrs
well i just bought another excavator and run it for two hrs and now it wont swing either direction its a 2005 321c … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
Cat skid steer 287C. Parking brake light is on and yellow
Cat skid steer 287C. Parking brake light is on and yellow warning light is flashing and brake will not disengage. All wiring and connections appear in good shape. … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
I have a 307b excavator the swing brake will not come off do
I have a 307b excavator the swing brake will not come off do not have any oil pressure need to know why we don't have oil pressure … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
Hello, I have a 320 Cat/Favco 30 ton. Unable to swing. Engine loads up when trying to swin
Hello, I have a 320 Cat/Favco 30 ton. Unable to swing. Engine loads up when trying to swing. I've located four solenoid valves located on pilot system near pump. I've also located solenoid valve on sw… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,306 satisfied customers
I have a 257b series 3 skid steer that the brakes are locked
I have a 257b series 3 skid steer that the brakes are locked on .the problem started when the machine was running it just locked up and wouldn't move .everything else works fine .we messed with it and… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,306 satisfied customers
I have a 1996 cat 325 excavated swing was working fine all
I have a 1996 cat 325 excavated swing was working fine all of sudden locked up like brake came on and won't release… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,306 satisfied customers
I have a Komatsu PC120-6. I have reciently repaired the main
I have a Komatsu PC120-6. I have reciently repaired the main hydraulic pump. One of the pistons came apart at the flex socket running the failed parts through the pump. I repaired the pump and it work… read more
Expert
Expert
I am working on system that I adding a auxillary hydraulic
I am working on system that I adding a auxillary hydraulic system to a Komatsu PC300 Excavator. The new system is utilizing the two hydraulic pumps on the existing Komatsu hydraulic system. The proble… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
11,515 satisfied customers
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