(800) 853-2651
SHOP NOW

Cockshutt 1650- fuel in oil and injection pump timing

C

CJN1

New User
Hello forum. My name is Chris and this is my first post. I from central Ontario and have a few questions about my Cockshutt 1650.

First this is a direct injection engine with 4017 hours.

In the last 7 hours of running the oil level has gone up approximately 3 liters (quarts). It is diesel fuel that is entering. Where could it be coming in so fast from? I have read briefly about a seal on the injection pump shaft that could be the culprit? It is not knocking or running rough when warm.

The tractor has been used very little since I bought it a few years ago but since day one it has started hard and only with spray a lot of the time. It runs rough for a while then cleans up well and little smoke when warm. Lots of power. I am beginning to wonder if the injection pump timing is off and possibly the pump also needs a rebuild. Would like to start with verifying the pump timing and if the seal is likely the culprit do that at the same time. Can you all help me with directions for seal replacement and pump timing please?

Many thanks and I appreciate being able to post on here.
Chris
 
Bet on the little transfer pump first! Having the valves corrected to the correct protrusion will help starting. Pump timing is not hard to verify, but for the minute I can not remember what it is. I will need to look it up.
 
As J. said, start with the supply pump first. The injection pump has a brass pilot tube for the seals and drive shaft support. Over time the tube will wear at the seal location, and the groove won't allow the new seal to work on a worn tube. Correct repair is to tear down the pump and epoxy in a new tube. Probably 90% of pumps I repair need the tube replaced, just finished a JD 4020 pump that needed the tube also.
 
Six loads of small squares done. Dinner and shower! Good day.

Thanks for the information men.

By transfer pump you are referring to the mechanical lift pump I assume? What do I check in there? The main diaphram?

So also check valve clearance? Ok will do that. What is the spec and order for the check again? My 4 cylinder is the rule of 9 not sure what this engine is.

I had read of one man who found pump timing was the difference between not starting without ether and cranking right up. Something about closer to TDC than spec especially on more wore engines? Regardless will check pump timing. Have read 4 degree BTDC. Is that a good starting point?

Also regarding the injection pump shaft seal.. Thanks for the heads up on the worn tube issue. I read the umbrella seals failure were a good place to start if fuel in oil. But my volume of around half a quart a hour seems like a awful lot!

Thanks for the clarification and I will get to it!
 

Just a note that the oil level is only going up when tractor is running and does not go up when sitting. Still a possibile symptom of a lift pump problem?
 

Thanks so much for your help with my fuel in oil problem in my 1650. I hope you don't mind me asking a few more questions. Having trouble finding answers on the forum with search engine and I want to get to work on the tractor.
- is the pump you are suggesting the mechanical lift pump I assume? Is it the diaphragm that rips to allow fuel in oil? My oil level is only going up when engine is running. Not sure if the lift pump would do that?
-can you please help me with valve clearance specs and order of checking the clearance?
-I would also like to verify injection pump timing. Any tips for that.

I will look for a online manual download today as well. But if you are able to help thank you so much!
 
You must log in or register to reply here.

Similar threads

J
CAV FUEL INJECTION PUMP MF2685
Replies
6
Views
403
Dieseltech
D
A
Roosa Master Injection Pump JD 310B Timing Question
Replies
3
Views
176
AliasRex
A
A
570super to 570 Cockshutt injection pump swap
Replies
8
Views
747
Dieseltech
D
L
Cockshutt (Brantford built) 550 diesel injection pump
Replies
2
Views
254
OntFarmer
O
B
655d injection pump
Replies
2
Views
148
bluebulldog
B
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top