High gear

steammech50

steammech50

Member
Have a 27 T that seems to take to long to go into high gear,like it's sliping or something,what would be the cause of this ?
 
Just that - the clutch plates are slipping. Could be as simple as an adjustment of the three clutch adjustment fingers (most likely) or worst case scenario, a clutch spring failure.
 
About 25 years ago when I first got my '22 roadster someone told me to use a quart of MMO in the oil. When I did this the clutch slipped so badly that I could hardly drive it. I drained the oil and filled it with straight 30 weight and it hasn't slipped since.
 
Just checking, when you throw it in high. do you shut the gas valve? I always do, momentarily cutting the power allows the plates to get a grip. Then gas on to resume acceleration.
 
Before you open the inspection cover to go about adjusting the clutch fingers, be sure the clutch lever/emergency brake lever is actually going all the way forward, to allow the cam on the cross shaft to clear the lever bolt. Sometimes a floorboard will slip, or brake rods will hinder that lever, which can keep the clutch from fully engaging.
 
steammech50 said:
Not to be rude,haven't driven a T that much,haven't tried letting off the gas when shifting,but will when we get the engine back in .Found the clutch out of adjustment,thanks for the help, Bill
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Next time that you drive the Model A, leave it floored when you shift it. The Model T is a fragile old lady; do the low gear, close the throttle, then nice and easy let up on the low peddle. Give the clutch a chance to grab. Its a 12 disc wet clutch and needs to squeeze some of the oil out to work. Rollingat 25 mph open it up (WOT) and if the clutch slips then, adjust the 3 fingers inside. The single clutch spring is only about 100 psi of pressure.
Read the book on that part, especially about dropping cotter pins into the abyss. A half turn on each will probably be enough. ws
 
You work on rotating or reciprocating steam stuff?? ws

Just saw yer a nuke guy... I ran coal fired steam turbines (little guys; 500MgWs) and GE aero deriv. gas turbines for ComEd in Chitcawgo... started as a mech/welder too. Youll master that model T after 10 minutes. I don't glow, just have black lung LOL... ws
 
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