John Deere 850 head gasket: Tractor Engine Repair Rebuild  -- Tractor Maintenance Discussion Forum and Review John Deere 850 head gasket: Tractor Engine Repair Rebuild -- Tractor Maintenance Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index

Kubota Tractors
  Kubota News
  Kubota Price
  Kubota Review
John Deere Tractors
  John Deere News
  John Deere Price
  John Deere Review
New Holland Tractors
  New Holland Tractor Price
  New Holland Tractor Revie
Other Tractor Brands
  Articulated Tractors
  Belarus
  Bobcat Tractors
  Case
  Cub Cadet
  Hinomoto
  Kioti Tractor
  Long
  Massey Ferguson
  Mitsubishi
  Other Tractor Brands
  Other Tractor News
  Shibaura
  Yanmar Tractors
Lawn and Garden Tractors
  Craftsman
  Cub Cadet Garden
  John Deere Garden
  Kubota Lawn Garden
  Other Garden Tractors
  Simplicity
  Toro Wheelhorse
  Ventrac Lawn Tractors
Antique Tractors
  Allis Chalmers
  Case David Brown
  Farmall IHC
  Ford
  Ford 9N 2N 8N
  Fordson
  Harry Ferguson
  John Deere Older
  Massey-Harris Ferguson
  Minneapolis Moline
  Oliver Cletrac Cockshutt
  Restoration
  Tractor Pulling
Tractor Attachments Implements 3ph
  Back Hoe
  Field Mowers Brush Cutter
  Grooming Mowers Finish Mo
  Loaders
  Snowblowers / Snow Plows
  Tillers and Ploughs
  Tractor Implements
  Trenchers
  Wood Chippers 3PH
Tractor Maintenance
  Diesel Fuel Lubrication E
  Tractor Engine Repair Reb
  Tractor Tires
Utility ATV
  All Terrain Vehicles
  John Deere Gator
  Mule Utility Vehicles
General Tractor
  Farming Ranching Agricult
  Photo Contest
  Size Tractor Needed
  Tractor Projects
  Tractor Safety
  Welding
Chinese Tractors
  Jinma Farmpro Agracat
  NorTrac Tractors
  Other Chinese Tractors
Cars
  All Brands
  Audi VW
  BMW
  Car Tires and Maintenance
  Chrysler
  Exotic, Sports, Racing
  Ford Cars
  General Motors
  Honda
  Hyundai
  Mercedes
  News
  Nissan
  Subaru
  SUV and Trucks
  Toyota Cars
Trucks Trailers
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
Home Building
  Alternate Electric Energy
  Barns Pole Barns
  Buying Ranch Farm Acreage
  Carpentry
  Contractors
  Electric
  Excavation
  Moldings Finish Trim
  Other Home Building
  Pellet Stoves
  Plumbing
  Wood Stoves
Tools
  Electirc Power Tools
  Gas Power Tools
  Generators
  Shop Tools
  Techniques Howto
Landscape
  Flowers Shrubs Garden
  Golf Course Maintenance
  Irrigation Systems
  Landscape Design
  Landscape Lighting
  Landscape Maintenance
  Lawn, Turf, and Grass
  Vegetable Gardening
Construction
  Caterpillar
  Komatsu
  Wheel Loaders
Current Events Health Happiness
  Current Events
  Dogs and other Pets
  Electronics And Computers
  Food
  Health
  Just For Fun Off Topic
  Movies Music Games
  Personal Finance Investme
  Sports Outdoors
Tractorpoint Site
  Member Photos
  Site Members
  Website Operations Howto


New As Posted | Active Subjects



Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Tractor Engine Repair Rebuild Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 11-08-2007, 10:33 Post: 147977
mobilus



View my Photos

View my Photos  Pics
Join Date: Jul 2007
Location: Clay County, TX
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 171

5
Filter by User
 John Deere 850 head gasket

Does anyone know the torque value for the head bolts on a John Deere 850 3-cylinder diesel?

Any info is appreciated!






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-08-2007, 22:24 Post: 148014
candoarms



View my Photos

View my Photos  Pics
Join Date: Mar 2007
Location: North Dakota
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1929

4
Filter by User
 John Deere 850 head gasket

Mobilus,

I'll contact my good friend, Mick, for you tomorrow morning. He may have a manual for the 850 in his shop.

Mick has been repairing John Deere tractors for more than 40 years.


Hang in there. I'll get back to you as soon as possible.

Joel






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-08-2007, 23:01 Post: 148019
mobilus



View my Photos

View my Photos  Pics
Join Date: Jul 2007
Location: Clay County, TX
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 171

5
Filter by User
 John Deere 850 head gasket

Thanks, Joel. I really appreciate your help.

I pulled the head off tonight. The middle cylinder has some pretty bad deposits (carbon, I guess) on the piston and around the valves. Not sure if that is a result of the overheating or not. I'm taking the head in to town tomorrow and dropping it off at a machine shop. I want to make sure that the head isn't cracked. The engine block deck looks good, but I'll probably go ahead and pull the studs that didn't come out. Then I can check for flatness.

Oh, I almost screwed up big time. I grabbed the push rods after the head was out, but didn't count to make sure I had all six. One had fallen down to where I didn't see it. And, when I bumped the starter, I found it...so I backed off on the crank and pulled the now bent push rod out. Weird part is, it had been rubbing something already, and had a pretty good divet, so I would have changed that one anyway.

I wish my digital camera wasn't messed up. It's about five years old and has had a rough life. I would borrow the wife's, but she keeps it at work (realtor). I might buy a cheap one.

Anyway, thanks again.
Mark






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-08-2007, 23:29 Post: 148020
candoarms



View my Photos

View my Photos  Pics
Join Date: Mar 2007
Location: North Dakota
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1929

4
Filter by User
 John Deere 850 head gasket

Mobilus,

Just out of curiosity, how many hours are showing on the meter?

The deposits you mentioned probably came from a slight leak in the head gasket, especially since it was only on that one piston. Either that, or you had one valve that wasn't closing fully.

The push rod that you bent.......did it show signs of wear at the end that goes through the head (top) --- or near the base, where it contacts the cam shaft?

And lastly, what was the reason for tearing this engine down? Did you notice something that caused alarm?

I'll get back to you one way or the other. Mick has a shop full of manuals. I'd be surprised if he didn't have one for the 850, but if not I'll be sure to let you know right away.

Joel






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-11-2007, 23:30 Post: 148116
mobilus



View my Photos

View my Photos  Pics
Join Date: Jul 2007
Location: Clay County, TX
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 171

5
Filter by User
 John Deere 850 head gasket

Head's off! Not good either, as the middle cylinder is a mess. It's obvious that the coolant has been leaking into that cylinder for a long time. Check out my pictures 16-18. I put kerosene in the cylinders and didn't get any leaking by the piston rings. Now I need to take the rest of the stuff off the casting. Hopefully, we'll find another head. The crack is in the shiny spot between the exhaust valve and the injector port. Doesn't look like it'd cause all this trouble, does it?

Joel, the push rod was damaged about a third of the way from the top, and it kind of looks like it was already bent a little.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-12-2007, 10:45 Post: 148133
candoarms



View my Photos

View my Photos  Pics
Join Date: Mar 2007
Location: North Dakota
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1929

4
Filter by User
 John Deere 850 head gasket

Mobilus,

Mick called me back this morning. He doesn't have a manual for the 850. The tractors in this area are generally much bigger than the 850.

Sorry to hear about the cracked head.

Joel






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-12-2007, 20:52 Post: 148162
mobilus



View my Photos

View my Photos  Pics
Join Date: Jul 2007
Location: Clay County, TX
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 171

5
Filter by User
 John Deere 850 head gasket

Joel,

The owner is contacting some wrecking yards in Oklahoma. The local JD dealer's parts guy told me that they could get a new head, complete, for $950. That's why the owner is looking for a good used one.

Oh, the tractor only has 1470 hours on it.

Take care, friend.

Mark






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-12-2007, 21:53 Post: 148164
candoarms



View my Photos

View my Photos  Pics
Join Date: Mar 2007
Location: North Dakota
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1929

4
Filter by User
 John Deere 850 head gasket

Mark,

There are many tractor graveyards around the country. If you need any help finding a used head, give me a shout. I'll see what I can drum up for you.

Joel






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-12-2007, 22:20 Post: 148165
mobilus



View my Photos

View my Photos  Pics
Join Date: Jul 2007
Location: Clay County, TX
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 171

5
Filter by User
 John Deere 850 head gasket

Thanks, Joel. I'll wait until I hear from the owner...if she doesn't find one, I'll call on you.

I'm constantly amazed at the lack of regular maintenance on some folks' tractors, equipment and vehicles. Before she gets the tractor back, it'll get new fluids, filters, etc. Oh, and a good pressure-washing! When I was doing some plumbing projects a couple of years ago, I ran hot water lines to spigots on either side of the house. It comes in handy when blasting away caked-on grime like this tractor has. Doesn't make the wife too happy, so maybe I'll put a water heater in my next shop.

Have a tractor day (any day with a tractor is a good day).
Mark






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Tractor Engine Repair Rebuild Forum

Thread 147977 Filter by Poster:
candoarms 4 | mobilus 5 |

 (advanced search)

Picture of the Day
videorov

Belarus - Found my one part and looiking for some anothers
Found my one part and looiking for some anothers


Unanswered Questions

Shibaura SD2203 rear axle oil
Mitsubishi MX55
Gator HPX ignition module
SL 1643
Removing LHS rear wheel beari
Gear Grinding 1200A - primary
Replacing a friction diskwashe
Bolens k1502 mitsubishi K3 ove


Active Subjects

Where Murf
Big country 4x2 utility vehicl
Operation
lift cylinder for 3pt hitch wo
Still have jerk in hydro
Flatulent gifts human and dog
front mount snowblower
Hydraulics Won t Work


Hot Topics

NorTrac Tractor Quality Review
Case 446 hydraulic pump
Long 460 hydraulic problem
Jinma Tractor w transmission p
Flatulent gifts human and dog
Generator set up ideas wanted
6X4 Gator Sometimes Shudders
Roof VP75 Brush Mower Manual


Featured Suppliers

Mountain Creek Labradoodles
      MountainCreekLabradoodles.com





New Forums on Gun Sport Shooting and Hunting -- BarrelPoint.com  New Forums on Horses ManePoint.com
Talk Horses at ManePoint
Hunting + Gun Sports at BarrelPoint



Most Viewed

+ Diesel engine spits oil from exhaust
+ HOW MANY TRACTOR HOURS IS TOO MANY HOURS
+ Ford 1910 hydraulic problems
+ Need help with 4x6 Gator 3 Cyl Diesel Engine probl
+ yanmar 3 cyl desiel wont start
+ How to stop Mice Rodents eating Tractor Wiring
+ JD 870 not pulling its own weight
+ How to Start Honda small engines
+ Honda small engines suck
+ Yanmar 186D fuel problem

Most Discussion

+ Ford 1910 hydraulic problems
+ Mice
+ Small Engine Start Problems
+ High pressure washer problem
+ JD 870 not pulling its own wei
+ Honda small engines suck
+ JD870 rops lights
+ Deisel coolant temperature
+ How to Start Honda small engin
+ Emergency Shut Down Valves

Newest Topics

+ Foton 45 3PH will not lift
+ Yanmar Fuel pump or primer bulb
+ New Holland TC26DA Ignition Switch Issues
+ New Holland TC26DA Ignition Switch Issues
+ Belarus 800 series
+ New Holland TC55DA 4 wheel drive tractor Boomer se
+ New Holland 3010S wiring problem
+ need rebuild kit
+ Deere 870 tractor with Yanmar ch3048d engine MOD 3
+ JD 4310 - pops out of gear
















Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines