.RC.
Senior Member
It will supposedly have a 3306 engine if it was rebuilt by SLEP. The original motor will be a D333C.
-
Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
Cat D7F Feedback/Advise
- Thread starter ja_cain
- Start date
It will supposedly have a 3306 engine if it was rebuilt by SLEP. The original motor will be a D333C.
Nige
Senior Member
Post a photo of the machine Serial Number plate please. Also one of the engine plate as well.
A tractor that has gone through SLEP will have certain identifying marks.
A tractor that has gone through SLEP will have certain identifying marks.
Hoghart
Active Member
As soon as I get it I will. Thanks.
LCA078
Senior Member
Possibly. Don't forget my tractor didn't have the "R" at the end of the serial number but it was certainly a SLEP rebuild. That's why I think the engine serial number is best way to determine a SLEP. A 90's engine in a 70's machine is probably the best indicator for SLEP, IMHO.
Last edited:
Nige
Senior Member
Hoghart
Active Member
Nige
Senior Member
Well if nothing else it has the 5R-8357 replacement 3306 direct-injection engine installed. The particular engine S/N was built at the end of October 1997.
I can't see any obvious marks indicating a SLEP was performed, although there are rivet holes in the first photo where apparently a previous data plate might have been installed. Is there no Cat machine data plate anywhere in addition to the military one.?
Did you get any links to manuals.?
I can't see any obvious marks indicating a SLEP was performed, although there are rivet holes in the first photo where apparently a previous data plate might have been installed. Is there no Cat machine data plate anywhere in addition to the military one.?
Did you get any links to manuals.?
Hoghart
Active Member
I haven’t seen any other Cat data plates. Only the previously mentioned “Reworked by VSE Corporation 02/2011”
I found an operating manual on EBay and it is on the way. I would love to have more manuals if possible.
I found an operating manual on EBay and it is on the way. I would love to have more manuals if possible.
Nige
Senior Member
Could those hours be simply what is on the 3306 engine that was installed to replace the original D333C at the time the tractor was rebuilt.? Having investigated the VSE corporation a little I would bet money they farmed out the rebuild to a 3rd party, because apparently their main business sector seems to be in aerospace-related areas.
Based on what has been discussed on another ex-military D7F thread recently (info provided by someone who actually carried out SLEPs at a Cat dealer) it appears as though the SLEP program was nowhere near to being a zero-hours rebuild on the whole tractor.
If the installed engine is truly a direct-injection 3306 it will not be fitted with glow plugs. From the Serial Number it is shown as having pencil-type fuel injectors.
Nige
Senior Member
Which manual did you get from eBay.? TM5-2410-233-10.?
You could have had one for free from my library.....!!
i have both the military Parts Manual TM 5-2410-233-23P and the Service Manual TM 5-2410-233-34if you would like them.
Hoghart
Active Member
I just received it late yesterday and have not had a chance to investigate the glow plug issue. It does have the ether start aid installed. Also the rear screen and backup alarm. Weren’t these items added on SLEP tractors?
Nige
Senior Member
No idea I'm afraid. Again from the information mentioned above from a guy who performed SLEPs I got the impression that every one seemed to be different, maybe predicated on the physical condition of each tractor.
Hoghart
Active Member
Yes, that is the manual #. seems to be the normal procedure for me, pay for something only to find out later I could have gotten it for free!
I would certainly appreciate the other two manuals.
I would certainly appreciate the other two manuals.
Nige
Senior Member
I wonder if when whatever work was performed on the tractor in 2011 during the "rebuild", that the original heat/start switch for glow plug operation with the D333C engine was simply not replaced with the appropriate type of key switch for use with a direct-injection engine..?
Hoghart
Active Member
I tend to agree that this is what happened, but not certain. Hopefully in the next few days I can confirm that there are indeed no glow plugs, only the switch (and label).
Nige
Senior Member
If you do confirm it then it tends to point towards quality deficienies in the rebuild process. Details like that switch should not happen if the rebuilder is on the ball.
Hoghart
Active Member
I agree. Although there are limited operation deficiencies created by leaving the old switch in place, it would have been a very inexpensive item to create a complete finished product, vs. what my Dad would have called a “half assed” job.
Nige
Senior Member
i thought that too. Maybe you need to dig into the electrical system behind the dash just to see how the (hopefully) removed glow plug wiring was terminated.
Hoghart
Active Member
Will do. Will let you know how it goes.
Welder Dave
Senior Member
Maybe just removed the glow plug wiring? If the switch had a glow plug position it won't hurt that it doesn't do anything now. Not a big deal if one contact on the switch isn't used.