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Changed pinion and sector gear and mower came back a week later with steering problems. Gears still look good, but pinion seems to jump the track when attempting left turn
no model number but some have a plastic fitting that hold the shaft down into the main gear it has a bolt that goes threw it into the bottom of the steering shaft about a $15 part but again no model number to see the set up
Locate the tag with your model and serial number on the tractor. Be sure you get the number EXACT or it won't work. Go to Murray's website and download it. They usually have parts listings at the back of the Owner's Manual
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steering rack or gear . 2X2 - 4X4 engine . Depends on steering system .
When you turn the steering wheel, the steering gear rotates the pitman arm which forces the relay rod to one side. The tie rods connect to the relay rod with the ball studs. The tie rods transfer the steering force to the wheels. Use the tie rods in toe adjustments. The tie rods are adjustable. The pitman arm support the relay rod. The idler arm pivots on a support attached to the frame rail and the ball stud attaches to the relay rod.
The 2 tie rod are threaded into the tube and secured with jam nuts. Right and left hand threads are used in order to permit the adjustment of toe.
Binding linkage , steering gear worn etc....
Power Steering System Description and Operation (w/o Electro-Hydraulic Steering)
The hydraulic power steering pump is a constant displacement vane-type pump that provides hydraulic pressure and flow for the power steering gear. The hydraulic power steering pumps are either belt-driven or direct-drive, cam-driven.
The power steering fluid reservoir holds the power steering fluid and may be integral with the power steering pump or remotely located. The following locations are typical locations for the remote reservoir:
• Mounted to the front of the dash panel
• Mounted to the inner fender
• Mounted to a bracket on the engine
The 2 basic types of power steering gears are listed below:
• A recirculating ball system
• A rack and pinion system
In the recirculating ball system, a worm gear converts steering wheel movement to movement of a sector shaft. A pitman arm attached to the bottom of the sector shaft actually moves one tie rod and an intermediate rod move the other tie rod.
In the rack and pinion system, the rack and the pinion are the 2 components that convert steering wheel rotation to lateral movement. The steering shaft is attached to the pinion in the steering gear. The pinion rotates with the steering wheel. Gear teeth on the pinion mesh with the gear teeth on the rack. The rotating pinion moves the rack from side to side. The lateral action of the rack pushes and pulls the tie rods in order to change the direction of the vehicle's front wheels.
The power steering pressure hose connects the power steering pump union fitting to the power steering gear and allows pressurized power steering fluid to flow from the pump to the gear.
The power steering return hose returns fluid from the power steering gear back to the power steering fluid reservoir. The power steering return line may contain an integral fin-type or line-type power steering fluid cooler.
In a typical power steering system, a pump generates hydraulic pressure, causing fluid to flow, via the pressure hose, to the steering gear valve assembly. The steering gear valve assembly regulates the incoming fluid to the right and left chambers in order to assist in right and left turns.
Turning the steering wheel activates the valve assembly, which applies greater fluid pressure and flow to 1 side of the steering gear piston, and lower pressure and flow to the other side of the piston. The pressure assists the movement of the gear piston. Tie rods transfer this force to the front wheels, which turn the vehicle right or left.
Your best bet , take it to a qualified repair shop.
You have the steering shaft the pinion gear on the end of the shaft and the stationary gear at the bottom on the frame. Either the gears are worn out or the steering shaft has too much play in it causing the gears to slip.
there is a plastic connector that holds the steering shaft down into the drive gear the plastic cracks and wears out then the gear jumps passed the teeth its about a $15 part
no model number but some have a plastic fitting that hold the shaft down into the main gear it has a bolt that goes threw it into the bottom of the steering shaft about a $15 part but again no model number to see the set up
there is a plastic bushing at the end on the steering wheel shaft that holds it in place in line to the they are about $12 look on sears parts online it's shaped like a t
I had the same problem with my 15 year old Craftsman lawn tractor. I tried to adjust the steering travel but it gave me marginal relief for a year until the steering failed with my steering wheel spinning freely and the wheels free to go left and right. The left bias for steering indicates that the steering shaft pinion weld was shearing prior to failure.
I took the steering apart and found that the drive pinion gear was sheared off the end of the steering shaft at the weld. I replaced the shaft and sector gear to fix this issue.
This fix requires good amount of mechanical disassembly to get the replacement parts in place so you might need to go to a shop to get a mechanic to fix this if you aren't set up for this kind of fix by disconnecting the mower deck and jacking up the front end to access the steering gear assembly and steering arm links.
What happens when you turn right? Does it turn as sharp as it used to? Almost sounds like the steering gear teeth have slipped and now it is steering to far to the left. You'll have to check the steering sector gears at the bottom of the steering column.
Sorry I don't have a solution but have a similar problem. I replaced the steering pinion gear in hopes that would resolve the problem, but it didn't. The steering pinion gear is located at the bottom of the steering shaft and turns the steering gear. Looks like the steering gear needs to be replaced as well. The nuts securing the steering gear are accessible in the same area as the pinion steering gear. I am going to order a replacement steering gear and attempt to replace it.
sounds like your sector gear and pinion are at fault go to sears.com to parts and enter your mod# you gave. if this is the problem could be labor intensive to repair
check top of sector gear mounting plate for waer this is the gear that hooks to you steering gear . the plate that it mounts to will ware down causing it to be loos and slip . the only way i know to fix it is to pull the cross member out and take it to a welding shop and have it built back up.if the bolt is as tight as itcan go .
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