Construction and Road Equipment

Construction and road equipment repair questions? Ask a mechanic ASAP

Connect one-on-one with {0} who will answer your question

Hello I have a cat 307ssr with a slow hydrologic issue. It…

Customer Question
Hello I have a cat...
Hello I have a cat 307ssr with a slow hydrologic issue. It has started with one side track moving slower than other and now have lost swing function and now slow boom and only one drive working. Can you offer suggestions. Pump has 4100psi and machine is in good condition with less than 3000hrs. All filters changed but no screens were cleaned. I am looking for help. It is a great machine when operating correctly
Submitted: 8 years ago.Category: Construction and Road Equipment
Show More
Show Less
Ask Your Own Construction and Road Equipment Question
Answered in 42 minutes by:
8/14/2014
Mechanic: catmastertech, Technician replied 8 years ago
catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4,008
Experience: Field service technician for CAT 19 years.
Verified

Hello. I am sorry but, I don't have any experience on the 307 series. They are completely different from the larger machines I service.

I only know the pump looks like a single pump but, has two sides. If you have lost power to half of your controls, maybe that side of the pump is bad.

You should check both sides to see if the pressures are the same.

Since I cannot be of much help, I will opt-out so others can see the question. Maybe another technician has seen this problem.

Ask Your Own Construction and Road Equipment Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 2,415
2,415 Satisfied Customers
Experience: Technican turned service manager with multiple lines of equipment and rental units.

Curtis B. is online now

Related Construction and Road Equipment Questions
Got a 330 cat excavator boom just nearly raises. Now pilot
got a 330 cat excavator boom just nearly raises. Now pilot pressure on slow side spool. Pilot pressure builds very slowly on high side spool. Good pilot pressure to joystick. Also travel is very limit… read more
catmastertech
catmastertech
Technician
4,008 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
4,008 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
4,008 satisfied customers
Very erattic hydraulics machine rums good for a while then
Very erattic hydraulics machine rums good for a while then suddenly has no power have to run full throttle to operate mounted a hydro hammer slow blows but if I push swing lever while trying to hammer… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,217 satisfied customers
I have a Catapillar 320BL the hydraulic functions are losing
I have a Catapillar 320BL the hydraulic functions are losing power boom up is extremely slow and tracking seems to have lost a lot of power as well The pilot pressure is at 600 psi I tested the two po… read more
catmastertech
catmastertech
Technician
4,008 satisfied customers
Have an old Takeuchi TB25 was running but it would die when
have an old Takeuchi TB25 was running but it would die when Itried to use it so I replaced the fuel line(a lot of sluge) and filters clean the tank, flushed the motor and rad and the motor seems to ru… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,217 satisfied customers
Cat 330 dl machine chatters as you swing and boom up at the
cat 330 dl machine chatters as you swing and boom up at the same time. note the boom moves very slow . at single function the boom moves fast… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,217 satisfied customers
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
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,217 satisfied customers
I have cat 312 tracks are very slow it will go straight on
I have cat 312 tracks are very slow it will go straight on level ground but won't turn have to take boom and turn machine… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,217 satisfied customers
I had to change an o ring on my hydrulic pump on a cat 315.
I had to change an o ring on my hydrulic pump on a cat 315. Now it seems as if i have air somewhere. The left track move very slow, it swings slow and the dipper hesitates a little. Other funtions see… read more
catmastertech
catmastertech
Technician
4,008 satisfied customers
I have a cat 307ssr the machine has been very good and has
I have a cat 307ssr the machine has been very good and has under 3000hrs I am experiencing a slow boom operations one drive not moving and the machine will not spin. It seems like a valve or some comp… read more
catmastertech
catmastertech
Technician
4,008 satisfied customers
looking for help with a 160 lx excavator. the machine had sat
looking for help with a linkbelt160 lx excavator. the machine had sat for quite some time without being used. it has 3ooo hrs. there were issues with the machine slowing down and losing power but seem… read more
Expert
Expert
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
4,008 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
4,008 satisfied customers
I am working on a jd330clc the swing is slow and if you pick
I am working on a jd330clc the swing is slow and if you pick up on the left side of the machine and roll the left track it very slow but if you push down on the boom the left track will speed up consi… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
1,217 satisfied customers
The pressures are 460 pilot and main is around 4600. the pump
The pressures are 460 pilot and main is around 4600. the pump has been rebuilt and set to spec buy the Cat specialist about 40 hrs ago. The staling under load appeared 1st ,the machine sat for about 1… read more
catmastertech
catmastertech
Technician
4,008 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
4,008 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Curtis B.

Curtis B.

Technician

2,415 satisfied customers

Technican turned service manager with multiple lines of equipment and rental units.

Wayne

Wayne

Journeyman

1,298 satisfied customers

worked on many road graders, Bull dozers , skid steers, Rollers

Cat Man

Cat Man

Cat Engine Expert

578 satisfied customers

I am ASE Master Certified.

dieseldan55

dieseldan55

Mechanic

299 satisfied customers

Road Mechanic for Volvo Construction Equipment.

Chris (aka- Moose)

Chris (aka- Moose)

Technician

85 satisfied customers

24 years of experience diagnosing & repairing

Steve

Steve

Mechanic

42 satisfied customers

Heavy Equipment Mechanic for 25 years

JBFixxer

JBFixxer

Mechanic

22 satisfied customers

16+ years experience, hydraulics,hydrostatics, engines, fuel injection systems. And everything in between.

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x