Cylinder order

[2400]

Working on ih 2400a industrial. Have attempted to adjust valves.
In the manual it states to adjust with cylinder 1 tdc then with
cylinder 4 tdc. Question is is cylinder 4 all the way back or is
cylinder 4 described as firing order which is 1,3,4,2. Adjusted all
valves as 1 in the front and 4 as the rear and still have a knock.
Maybe over thinking but curious to which is the correct number 4
cylinder. Thanks all

 

[used red MN]

Number 1 cylinder is by the fan/radiator. Do not remember what engine you have but listed on the photo or not it applies to your engine.

 

[Jim.ME]

Cylinders are located 1-2-3-4 from the front going to the back, firing order is not the location.

 

[2400]

C-157 is the motor but yes believe the adjustment order you posted is correct. Still has a knock that seems to disappear with a higher rev. Wasnt sure if it was because adjusted using cylinder 4 as 1,2,3,4 or needed to have cylinder 4 as firing order 1,3,4,2. But as long as cylinder 4 is the far back cylinder was done correctly. Thanks all for the help!!!

 

[used red MN]

Not all knocks come from the valve train in an engine. In general I would describe noise from the valve train as a tap or click. Knock in an engine usually is from a bearing or piston. Have you ran the tractor much? Did it do it do it as long as you have had it or did it just start. Does it have an oil pressure gauge, what does it show?

 

[2400]

Oil pressure gauge shows on the high side of the white. Motor has always had knocks or tings but must not have had the #1 cylinder tdc the first time after putting new head gasket on. Had to readjust the valves and sounded great when she first started. After say 15 seconds ofmotor running the noise starts. Literally no noise till then. When reved high dont hear it but then again cant hear much besides the exhaust at that point. Could easily believe bent push rod after having the valves adjusted wrong the first time. Tractor has never sounded as great as it does those first few seconds and would love to have it run like that the entire time

 

[rustred]

This is how it is. Yes number 1 cylinder and number 4 cylinder are both at top dead centre at the same time. But But u can only adjust the valves when the cylinder is on compression stroke at TDC. The other cylinder is called the running mate and those valves will be tight and on the rock.. meaning when u rock the crank back and forth the valves do the same thing. The compression valves will be stationary while doing this. When adjusting valves I always watch the running mates for each cylinder. I dont remove plugs either. Its called experience and know what u are looking at. You just follow the firing order and adjust each cylinder in that order. Then there is the simplified method as shown in that sheet. But I am answering your question.