Ken Christopherson
Well-known Member
Hello all!
First time for me working on an Allis, spent most my time in the Case/IH/JD forums. I know the same basic principles apply though, so here goes nothing.
A friend called me up saying his father in law has a WD45 that has been running good for years, but has gotten progressively worse.. Wants me to take a look at it. I'm suspecting right off the bat that he probably needs a good fuel system cleaning & carburetor overhaul. Here are some things I will check during my research (he lives about an hour away so I want to be sure I can check everything in one trip).:
Timing (checked the procedure online and found this description):
"In order to get it timed roughly and get the engine started, put the TDC mark in the middle of the inspection hole with #1 cylinder at top of compression stroke. May have to take #1 spark plug out and hold your thimb over the hole while someone else turns it over with the crank to determine when it's coming up on the compression stroke. After TDC mark is in hole, take cap off distributor so you can see the points. Loosen the bolts holding the two clamps that hold the distributor, then grab the outside of the distributor and turn it back and forth a little (the motor doesn't turn over) and watch the points. Clamp it in place at the spot where the points are just starting to open. Now put the rotor back on and where it's pointed will be where you want to hook up #1 spark plug wire. Put the cap back on, and hook up the wires. Remember the firing order is 1243 clockwise around the distributor. Now, start the tractor. It is best to use a timing light and while the engine is running wide open, loosen those clamps again and turn the distributor so that the Fire mark appears in the hole while using the timing light. Also, you can just do it by ear and get pretty close. Turn the distributor back and forth while the engine is running wide open. You'll hear it labor when too far advanced and also too far retarded. Set it about halfway in between where the engine runs nice and free. Make sure you have the point gap set correctly, too."
Point Gap Setting:
Distributor: .020?
Magneto (Fairbanks Morse J4A/J4B): .020?
Valve Clearance:
.014? Cold / .012? Hot
Carburetor Settings:
Idle: 1 ? turns out
Load: 1 3/8 turns out
Also will check/clean the fuel flow at all points (tank to bowl, bowl to line, line to carb).
If anyone can think of any other areas to check, please let me know. I'll be headed out tomorrow morning to get started on it. Thanks for the help fellas! If I am not mistaken, this tractor has a firing order different from other brands? 1-2-4-3, correct?
First time for me working on an Allis, spent most my time in the Case/IH/JD forums. I know the same basic principles apply though, so here goes nothing.
A friend called me up saying his father in law has a WD45 that has been running good for years, but has gotten progressively worse.. Wants me to take a look at it. I'm suspecting right off the bat that he probably needs a good fuel system cleaning & carburetor overhaul. Here are some things I will check during my research (he lives about an hour away so I want to be sure I can check everything in one trip).:
Timing (checked the procedure online and found this description):
"In order to get it timed roughly and get the engine started, put the TDC mark in the middle of the inspection hole with #1 cylinder at top of compression stroke. May have to take #1 spark plug out and hold your thimb over the hole while someone else turns it over with the crank to determine when it's coming up on the compression stroke. After TDC mark is in hole, take cap off distributor so you can see the points. Loosen the bolts holding the two clamps that hold the distributor, then grab the outside of the distributor and turn it back and forth a little (the motor doesn't turn over) and watch the points. Clamp it in place at the spot where the points are just starting to open. Now put the rotor back on and where it's pointed will be where you want to hook up #1 spark plug wire. Put the cap back on, and hook up the wires. Remember the firing order is 1243 clockwise around the distributor. Now, start the tractor. It is best to use a timing light and while the engine is running wide open, loosen those clamps again and turn the distributor so that the Fire mark appears in the hole while using the timing light. Also, you can just do it by ear and get pretty close. Turn the distributor back and forth while the engine is running wide open. You'll hear it labor when too far advanced and also too far retarded. Set it about halfway in between where the engine runs nice and free. Make sure you have the point gap set correctly, too."
Point Gap Setting:
Distributor: .020?
Magneto (Fairbanks Morse J4A/J4B): .020?
Valve Clearance:
.014? Cold / .012? Hot
Carburetor Settings:
Idle: 1 ? turns out
Load: 1 3/8 turns out
Also will check/clean the fuel flow at all points (tank to bowl, bowl to line, line to carb).
If anyone can think of any other areas to check, please let me know. I'll be headed out tomorrow morning to get started on it. Thanks for the help fellas! If I am not mistaken, this tractor has a firing order different from other brands? 1-2-4-3, correct?