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CAT 420D S/N:FDP08627. CAT 420D; Serial Number: FDP08627.
Yes, I'm starting to look into the issue now. I'm only in the research phase, but it has an intermittent reverse issue. When the machine is started (cold), it usually will not shift into reverse. It always shifts into forward, but it usually takes sometime running the machine to get it to shift into reverse. Once it's been used a few times, it will shift into reverse, but only of reverse is being used without a lot of "off" time. In other words, if we use the machine in forward for long enough, the machine will stop going into reveres again. My assumption is that the solenoid responsible for reverse is failing, but I'd love to be able to test the electrical signals before getting deep into replacing the solenoids. … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
I have a J D CT322 compact track loader and I think I need
Hi there I have a J D CT322 compact track loader and I think I need to replace the port lock solenoid do you remove the bolt above the solenoid to remove a stem and replace the full unit. I have the t… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,161 satisfied customers
I have a Cat 257b that I was doing some track work on. I had
I have a Cat 257b that I was doing some track work on. I had all of the hoses off to get the under carriage off and in doing so most of the oil leaked out. While I had it in the shop I decided to fix … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,161 satisfied customers
Borrowed a 416 Series II from a friend. It's suddenly having
Borrowed a 416 Series II from a friend. It's suddenly having a very hard time shifting into any of the 4 speeds. A check of the fluid level WHILE RUNNING shows low. After we shut it off, it shows high… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
We have a military grove AT 422 serial 220101 it's very low
We have a military grove AT 422 serial 220101 it's very low hours. At first we couldn't move it when driving from the lower because the engine would immediately stall; the torque converter remains loc… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,161 satisfied customers
I have a CH55 Cat Challenger that won't hardly move in
Hello- I have a CH55 Cat Challenger that won't hardly move in forward or reverse. It is flashing an F329 fault code. Any suggestions on how to fix on my own? … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
1998 skytrack 9038 wont go forward as well as it should,
1998 skytrack 9038 wont go forward as well as it should , brake pressure light is also on.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,161 satisfied customers
I have a t40 forklift cat wont move forward or reverse any
I have a t40 forklift cat wont move forward or reverse any tips … read more
Curtis B.
Curtis B.
Technician
Associate Degree
2,358 satisfied customers
I have a D6T serial number LAY1592 around 6500 hrs. D6T XL,
I have a D6T serial number LAY1592 around 6500 hrs … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
I have a 1989 Cat D4H LGP When pushing forward or backwards
I have a 1989 Cat D4H LGP When pushing forward or backwards it is fine. When I pull back on the left stick to drive the right track forward it makes this grinding/vibration noise. It does not do it in… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 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
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,161 satisfied customers
Man I have a question on a 928g loader I have been doing
Man I have a question on a 928g loader I have been doing some test on the transmission I need a little bit of direction. Here are some of the test results on pressures at the test ports cold Port G is… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,161 satisfied customers
Ralphlive, I have an 821b loader that is giving me all kinds
HI Ralphlive, I have an 821b loader that is giving me all kinds of grief. It came in to the shop with transmission issues, kicking out in 1st and 2nd gear, possibly 4th as well. As I understand it thi… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,161 satisfied customers
Belive torque is bad need to know what port pressure is checked
Belive torque is bad need to know what port pressure is checked at and what the pressure is?… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
cat 416 backhoe ser #5pc01396 trans #6t5584 I read the popup
cat 416 backhoe ser #5pc01396 trans #6t5584 I read the popup article but I think this machine is older It has reverse but no forward, filter was checked & appeared to have rubber in it.… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
I have a big CAT delivery coming, but have never driven such
I have a big CAT delivery coming, but have never driven such an old machine. How do you release the parking brake on a 1972 CAT 988? It has a knob that I think you set by pulling up. And how do you sh… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
I have just bought a cat 928g loader with approx 16000 hours,everythin
I have just bought a cat 928g loader with approx 16000 hours,everything works well until machine is warmed up say about half an hour and then I loose 3rd & 4th forward gears and all reverse gears. is … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,324 satisfied customers
Have a ford 555B serial # XXXXX Came in my shop with part
Have a ford 555B serial # XXXXX Came in my shop with part time reverse, once it goes into reverse it will hold solid, you can put bucket down and lift front end and backdrag all around yard, stop and … read more
Curtis B.
Curtis B.
Technician
Associate Degree
2,358 satisfied customers
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