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I have a cat 320c excavator. I replaced a boom cylinder and
I have a cat 320c excavator. I replaced a boom cylinder and now after some operation the thumb has quit working. I believe the thumb cylinder may have an air bubble. serial number 7jk88638… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
I have a cat 325dl that was driving across a field and very
I have a cat 325dl that was driving across a field and very suddenly lost track speed on one side run by pump 1 or called the driven pump. If the ecm override is switched track speeds back up to norma… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
Catmastech 321c SN mcf00334 when boom is held over to releaf
catmastech 321c SN mcf00334 when boom is held over to releaf stalls machine no codes power shit is good right pmp at idel is 434 psi… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
Cat masterech this is for you 330C DKY01249 i have a few?
Cat masterech this is for you 330C DKY01249 i have a few ? regurading functions and so on . Boom rasies very slow same with bucket and stick also tracking . no codes on HYD Side or the C9 side filters… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
I have a 311u cat excavator. The pilot control valve is on
I have a 311u cat excavator. The pilot control valve is on backhoe control. No matter where I move the selector I can't get to cat controls. I believe someone has changed lines. Is there a drawling to… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a 420 D cat backhoe steers good without a load in the
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Dan
Dan
Auto Mechanics 1&2/diesel mech
I am looking to know what the pilot pressure should be on
hi i am looking to know what the pilot pressure should be on a 2009 cat m313d wheel excavator and how to adjust it. thanks.… read more
Bradley Martin
Bradley Martin
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Link belt ls1600CII. The main problem in having is when the
Link belt ls1600CII. The main problem in having is when the boom is lifted, its slow and bogs the engine down unless you bottom out the arm function at the same time, then the boom shoots right up. Ev… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
242B3 bucket and boom hydraulics won't engage but the 4in1
242B3 bucket and boom hydraulics won't engage but the 4in1 clamp and drive still works? any ideas, a switch or somthing else?… read more
catmastertech
catmastertech
Technician
2,600 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
Technician
2,600 satisfied customers
On a Cat TH360B what makes the action lamp on the dash come
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catmastertech
catmastertech
Technician
2,600 satisfied customers
Cat 311B SN 8GR00463 Boom down when the boom is on the ground
Cat 311B SN 8GR00463 Boom down when the boom is on the ground does not lower the pilot line pressure to the front pump and the pump Doesn't spool up. If the boom is in the air it does drop the pressur… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
Hi,I own a Caterpillar 320B excavator. The electrical circuit
Hi, I own a Caterpillar 320B excavator. The electrical circuit to the Straight Travel Solenoid valve is disconnected. What is the purpose of this solenoid valve and when is it activated? It is connect… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
Cat 322bl sn 8nr20091. Left track slower than the right, will
Cat 322bl sn 8nr20091. Left track slower than the right, will walk straight when activating another function eg swing, arm etc, I've been told one side of the main pump could be getting tired, hence t… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
cat 325C excavator 5500hrs right side track is slower than
cat 325C excavator 5500hrs right side track is slower than left track. slower both forward and reverse. when boom is all the way up and against relief, both pumps achieve same relief pressure on monit… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
Hey Kevin my name is XXXXX XXXXX am working on a cat 315CL SN PCJC01025.
Hey Kevin my name is XXXXX XXXXX am working on a cat 315CL SN PCJC01025. Unit only swings with the back up switch on the switch is good i have cat ET maybe you cat point me in the right direction plea… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
my customer has a cat 312b sn 8jr012241 it will swing around
my customer has a cat 312b sn 8jr012241 it will swing around fast but when you swing slowly it locks down the swing every certain clock position. we removed the swing drive motor and all gears look in… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
I have a 1980 235 Cat excavator and recently the stick is very
I have a 1980 235 Cat excavator and recently the stick is very slow, also one track has lost power. I checked the pressure on the pumps, both pressure up to 3700 psi, pilot pressure is at 325 at the s… read more
catmastertech
catmastertech
Technician
2,600 satisfied customers
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