Hi,
First, the Bantom isn't offered in the US, but I believe it to be very similar to the Ford Ranger in design. I am going to provide the directions I have for a Ranger for removal and replacement of the pump. Note that it indicates to simply remove the high pressure hose. I realize that is one of the issues; it won't come loose. What I suggest is this. First try using a good penetrating oil and allow it to sit overnight. Next, tap around the fitting lightly with a hammer to jar to fitting. Then, us a good line wrench that provides the leverage to remove it. If that still doesn't work, you will need heat to cause the pump (where the fitting is located) to expand and the fitting to be removed.
As far as the o-ring, what to do is simply take it to a parts store and they will match it with a new one. If the thread size has also changed, in other words, the fitting is smaller or larger in diameter, you should be able to get an adapter to fit both ends.
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Here are the directions I have for pump removal. It includes the high pressure line as well and torque specs.
2007 Ford Truck Ranger 2WD L4-2.3L VIN D
Power Steering Pump
Vehicle Steering and Suspension Steering Power Steering Power Steering Pump Service and Repair Removal and Replacement Power Steering Pump
POWER STEERING PUMP
Power Steering Pump - 2.3L
Special Tool(s)
pic 1
Material
pic 2
pic 3
Removal and Installation
CAUTION: While repairing the power steering system, care should be taken to prevent the entry of contaminants or premature failure of the power steering components can result.
1. Remove the power steering pump pulley.
2. NOTE: Do not allow power steering fluid to contact the accessory drive belt.
Compress the clamp and disconnect the supply hose.
3. Disconnect the power steering pressure line.
Remove and discard the O-ring seal.
To install, tighten to 65 Nm (48 ft. Lbs.)
4. Remove the power steering pump bolts and the power steering pump.
To install, tighten to 23 Nm (17 ft. Lbs.)
5. CAUTION: A new Teflon(R) O-ring seal must be installed any time the power steering pressure line is disconnected from the power steering pump.
To install, reverse the removal procedure.
Using the special tool, install a new Teflon(R) O-ring seal on the power steering pressure line.
Fill the power steering system.
Pic 4
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Let me know if you have other specific issues that I can address.
Take care,
Joe
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Wednesday, April 8th, 2020 AT 7:36 PM