(800) 853-2651
SHOP NOW

1958 720 diesel

D

Deerepower

New User
Any help would be appreciated. My 720 diesel has a knock at the clutch side pulley and I have replaced all the components in it with no better results also replaced the bearing in the clutch pulley. I have checked my flywheel to make sure it was tight with no end play and that's good so I don't know which way to go is it a crank bearing? Or Rod bearings?
 
Does the knock sound louder when the clutch is disengaged? When you re-engage the clutch is the noise "softer"? Check the bottom of your
flywheel cover for the presence of metallic dust. Have you retorqued the flywheel bolts?
 
Don't know WHY but a loose flywheel on those sounds like a problem inside or behind the belt pulley! Been there on a 70 D and a taper lock fixed it back in the mid 80's. Still going.

I'd almost bet yer hunting for the noise problem on the wrong end of the crankshaft.
 
Put the transmission in 6th gear, engage the clutch, lock the brakes, remove the flywheel cover. Put a pry bar into the teeth of the flywheel ring gear and see if there is any rotational movement of the flywheel on the crankshaft. The slightest of rotational movement will cause the noise you are hearing. If the splines are worn you will see movement even if it has been torqued to 250 ft lbs.
 
Thanks for the comments on my tractor. I played with it more and did get the flywheel to move so I decided to torque it to 275 and started it and
the knock was gone so you guys were right about the flywheel was my trouble. It's good it's not knocking anymore but bad it may not stay tight
because of wear on the crank and flywheel.
 
You must log in or register to reply here.

Similar threads

T
John Deere 50 knocking
Replies
14
Views
381
TylerB
T
S
  • Question
Jd 2030 4219D Torque specs
Replies
2
Views
172
Jim.ME
J
O
630 belt pulley/clutch trouble
Replies
7
Views
533
JIM MN
J
C
720 gas transmission
Replies
2
Views
325
rmcky
R
E
JD 720 lp and diesel serial number questions...
Replies
5
Views
393
Emadgyesi
E
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