• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
[4]

Atlas MFC Belt Won't Disengage

[10] Like what you see?
Click here to donate to this forum and upgrade your account!

greenman

Iron
Registered Member
Joined
Aug 17, 2017
Messages
22
Likes
2
#1
I've got a 4L350 on the motor pulleys. Doesn't seem to matter how much slack I give it, the belt always runs. It's supposed to slip when the lever is disengaged right?

Is there something I can put on the belt? Polish the pulleys?

Thanks.
 

Ulma Doctor

Infinitely Curious
Active Member
Joined
Feb 2, 2013
Messages
4,356
Likes
3,599
#2
Hi greenman,
there may be residual friction even with a slack belt.
it's worse on a new belt because of the increased grip of new rubber, to sufficiently drive the headstock.
i would suggest turning off the motor when making adjustments, lubricating, or taking the mill in and out of back gear and the problem is no longer a safety issue

also when shutting down the machine for the day, release the tension on the drive belt to prevent stretching and static form memory from the pulleys
 

wa5cab

Downloads Moderator
Staff member
H-M Supporter - Sustaining Member
Joined
Dec 25, 2011
Messages
3,796
Likes
751
#3
Right. If you make it a practice to do anything on the mill while the motor is running other than cut metal, sooner or later you are going to lose a finger, hand or arm. Or worse. Think of it as a Darwin Award tester. The belt tension lever is NOT a clutch.
 

wa5cab

Downloads Moderator
Staff member
H-M Supporter - Sustaining Member
Joined
Dec 25, 2011
Messages
3,796
Likes
751
#5
A slack belt can't consistently deliver enough smooth torque to do useful work. But it can usually deliver enough to cut off a finger or break an arm.
 

greenman

Iron
Registered Member
Joined
Aug 17, 2017
Messages
22
Likes
2
#6
A slack belt can't consistently deliver enough smooth torque to do useful work. But it can usually deliver enough to cut off a finger or break an arm.
Yea I meant the workaround will just be shutting the machine off. I've worked on and around gas powered machinery so I do have some concept of safety. Usually.
 
[6]
[5] [7]