Construction and Road Equipment

Construction and Road Equipment repair questions? Ask a mechanic ASAP

Ask an Expert,
Get an Answer ASAP!

Construction and Road Equipment

What is the correct method to time 3af1 engine

Customer Question
what is the correct method to time 3af1 engine
Submitted: 2 years ago.Category: Construction and Road Equipment
Ask Your Own Construction and Road Equipment Question
Customer reply replied 2 years ago
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 7 hours by:
7/3/2015
Mechanic: Dan, Technician replied 2 years ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 5,720
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
Verified
my name is***** will try to help. Could you check the engine data tag to see if it lists the timing degrees it should be timed to on your engine? It sounds like you might be a tooth off or a few degrees out.The front crankshaft pulley should have timing marks for the degrees. You will need to line up the pulley pointer with the degree spec for this engine and with the timing inspection cover on the side of the front cover (cover with two bolts on the side of the timing cover) removed line up the mark on the gear. If the spec is not on the engine date tag let me know your engine serial number and pump tag info and I will see if I can get the specs for you. This is the procedure for a different model but it is basically the same procedure but we need to know how many degreed BTDC to set this one at. Let me know and Ill help any way I can. View Full Image View Full Imageyou can flow time/ spill time the pump. Here is the basic procedure. Im kind of curious at what degree it might be se at now. This is done by checking the pint where fuel delivery starts and stops on #1 at the pump. This is another option of timing the pump but we still need the degrees to time this at. I was told he would follow up with me by the end of the day.First, check the injection pump specification plate on the engine for the port closure value. Then, with a breaker bar on the crankshaft bolt, manually turn the crankshaft in the engine's direction of rotation to position the #1 piston on the compression stroke. Locate the engine calibration scale that is usually found on the front pulley, harmonic damper, or the flywheel. Position the crankshaft approximately 20 degrees before the port closure specification. For example, if the specification is 10 degrees, you would set the crankshaft at 30 degrees.Remove the high-pressure pipe from the delivery valve on the injection pump #1 cylinder. Unscrew the delivery valvebody and remove the delivery valve core and spring. With a scrap piece of injection line from a salvage yard or engine shop, install it as a test spill tube on the injection pump. A discarded high-pressure pipe cut neatly and shaped into a gooseneck is all that is required.Use the hand primer pump to charge the gallery. The pressure created by the pump will be insufficient to open the delivery valves, which means the fuel will exit through the spill tube you have attached to the #1 port. The fuel should exit in a steady stream, so have a friend hold a coffee can or other container under the tube.Then, slowly and smoothly turn the engine over with the breaker bar in the direction of rotation while observing the stream of fuel from the test tube. When the injection pump plunger leading edge rises to trap off the spill port, the steady stream of fuel exiting the test tube will first break up into droplets and then cease as the plunger passes the spill port.The critical thing here is to locate the pump precisely (through the movement of the crankshaft) at port closure. At that time, the flow at the test tube should exist but be minimal; 2 to 6 drops per 10 seconds.Now check the engine timing marks. Where the crankshaft position produced the drip from the test tube is the port closure. The crankshaft should be within one degree of the listed specification if the injection pump is timed properly.If the pump timing is found to be wrong, remove the accessory drive cover plate. To do so, loosen and remove the fasteners that connect the pump drive gear to the pump drive plate. With a breaker bar on the crankshaft bolt, turn the crank to the port closure specification. By uncoupling the pump drive plate from the pump drive gear, the pump will remain stationary at port closure on the #1 cylinder while you turn the crankshaft. When the engine is in the correct position, torque the fasteners that couple the pump drive gear to the pump drive plate. Turn the engine backward approximately 20 degrees before the port closure timing specification and then recheck the setting.
Ask Your Own Construction and Road Equipment Question
Customer reply replied 2 years ago
Thanks Dan , I have no specs at all . I can spill time to 20deg BTDC if this figure will suit this engine no marks can be found on flywheel and only mark on pulley is TDC no 1, I can calculate the degrees before or after by circumferential measurement on pulley . Regards Graeme
Customer reply replied 2 years ago
My telephone number on registration may be wrong as I don't know a ten digit form ,in any case it is New Zealand 0064-6-7646239 Graeme
Mechanic: Dan, Technician replied 2 years ago
Hi Graeme, I am in the US so that is why the phone digits are 10. I would not be able to do a phone consult unfortunately. I have been slammed with field work the last two weeks so my time on here has been limited. What is the current status on this?
Ask Your Own Construction and Road Equipment Question
Customer reply replied 2 years ago
Hi Dan ,Can you affirm that 20 degrees BTDC is a good starting point for this timing exercise ? I have no timing marks at all , but I can establish TDC which is on the crankshaft pulley , and can establish any number of degrees by circumferential measurement Regards Graeme
Customer reply replied 2 years ago
Please answer this query ,I have doubts AS to the viability of just answer Regards Graeme
Mechanic: Dan, Technician replied 2 years ago
Hi Graeme, I am buried in field work this week and am not in the office to research this for you. I help on here in between jobs. Let me opt out so another expert can take over that might have better availability.
Ask Your Own Construction and Road Equipment Question
Customer reply replied 2 years ago
can anyone in just answer please tell me the correct injection timing for the isusu 3af1 engine
Ask Dan Your Own Question
Dan
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 5,720
5,720 Satisfied Customers
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.

Dan is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

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

1,243 satisfied customers

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

Wayne

Wayne

Journeyman

600 satisfied customers

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

Cat Man

Cat Man

Cat Engine Expert

490 satisfied customers

I am ASE Master Certified.

dieseldan55

dieseldan55

Mechanic

270 satisfied customers

Road Mechanic for Volvo Construction Equipment.

Steve

Steve

Mechanic

42 satisfied customers

Heavy Equipment Mechanic for 25 years

Chris (aka- Moose)

Chris (aka- Moose)

Technician

39 satisfied customers

16 years of experience

JBFixxer

JBFixxer

Mechanic

20 satisfied customers

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

< Previous | Next >

Related Construction and Road Equipment Questions
873 bobcat with deutz. Lower fuel line was plugged blew that
873 bobcat with deutz. Lower fuel line was plugged blew that out and now gets fuel to filter and banjo but still no fire. … read more
Dan
Dan
Technician
5,720 satisfied customers
MY SKID STEER WONT START. CAT 262 C SKID STEER. IT WAS
YES IT WAS RUNNIN FINE. THEN OUT OF NO WHERE IT SHUT OFF. … read more
Dan
Dan
Technician
5,720 satisfied customers
We have a 301 dynapac roller. It cavitates and won't move
We have a 301 dynapac roller. It cavitates and won't move when trying to go in either direction. We changed hydraulic filters. What next??… read more
Dan
Dan
Technician
5,720 satisfied customers
How do I dissemble the bucket tilt hydraulic cylinders on a
how do I dissemble the bucket tilt hydraulic cylinders on a new Holland 7108 loader vintage possibly 1991 … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,243 satisfied customers
I have a case skid steer and recently the alternator light
i have a case skid steer and recently the alternator light came on and is alarming. The unit starts, has a good battery charge and the alternator is putting out power as far as we can tell with the pr… read more
Dan
Dan
Technician
5,720 satisfied customers
Rebuilding a Nissan forklift with. H20 engine Nissan it has
H20 engine Nissan it has shims between crank and crank gear what is the deal with the shims … read more
Dan
Dan
Technician
5,720 satisfied customers
My mini excavator track won't turn on one side. Looking to
My mini excavator track won't turn on one side. Looking to troubleshoot. … read more
Dan
Dan
Technician
5,720 satisfied customers
How do you switch digging mode manually on a case 9020b
how do you switch digging mode manually on a case 9020b excavator … read more
Dan
Dan
Technician
5,720 satisfied customers
I just bought a 310A Backhoe, and was told that I need to
I just bought a 310A Backhoe, and was told that I need to change the filters and fluid. The fluid is milky looking like it has water in it. It worked a little, but now it won't steer, or even put the … read more
Dan
Dan
Technician
5,720 satisfied customers
What are the cab dimensions for. I need cab dimensions for
I need cab dimensions for the WL 36 the WL 52 and the WL 60 Wacker Neuson Articulating Loader. I am looking at purchasing a new machine. I sat in the WL36 and ideal size, seating a bit cramped. Sat in WL60 plenty of space, little to pricey. No WL52 to sit in and try. Hope seating/cab space is somewhere in between. … read more
Jeremy
Jeremy
Technician
Vocational, Technical or Trade Scho
104 satisfied customers
2001 303.5 cat joy stick control change were is it located.
2001 303.5 cat joy stick control change were is it located … read more
Dan
Dan
Technician
5,720 satisfied customers
I have a cat mini excavator that is beginning to make some
I have a cat mini excavator that is beginning to make some noise in the center pivot area, and it seems like it's straining. I would like to know what maintenance I should do and how it is done on tha… read more
Dan
Dan
Technician
5,720 satisfied customers
I'm trying to find out how to change the key start switch on
I'm trying to find out how to change the key start switch on a Caterpillar 277B … read more
Dan
Dan
Technician
5,720 satisfied customers
Company bought a Linkbelt 298 HSL. I know how to build
Company bought a Linkbelt 298 HSL. I know how to build cranes, but not this one. I need to see an operators manual. I'm sure we will get one, maybe, with the crane, but I will not guarantee that. … read more
Dan
Dan
Technician
5,720 satisfied customers
I have a d6m cat dozer.I need a wiring diagram for the motor
I have a d6m cat dozer.I need a wiring diagram for the motor we replaced the motor and the wiring was messed up when my helper took it out.He is know longer working with me and we are trying to get it… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
I have a snorkel uno41d 4x4 got from auction. The foward and
I have a snorkel uno41d 4x4 got from auction. The foward and reverse drive goes goes way slower than it should even at high throttle and it surges a little when going. All other hydraulic items work f… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 satisfied customers
What does code u 003516-01 mean and how to correct also
what does code u 003516-01 mean and how to correct also codeu005246-24 unit level on fluid fine … read more
Dan
Dan
Technician
5,720 satisfied customers
I have a 2007 komatsu pc35mr...at idle there is no hydraulic
I have a 2007 komatsu pc35mr...at idle there is no hydraulic operations at all,,at 1/2 throttle it starts to move and at full throttle it operates as a normal machine operates at 1/2 throttle … read more
Dan
Dan
Technician
5,720 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.

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