Remove belt-clip and battery
Remove the 4 screws (2 silver and 2 black) in the battery compartment.
Remove antenna and pull off the knobs
With tweezers or needle nose pliers, carefully remove the rubber gaskets around the knob shafts.
Unscrew the two split nuts from the knob shafts
Take out the rubber plug for the mic and DC sockets and swivel it around 90 degrees.
Carefully remove the body of the radio from the front panel. Ease it out from the bottom first making sure you don’t damage the rubber waterproof seal that goes all around it. Separate the LCD section from the front section.
Remove R1164. This is found on the right side of the radio, on the board just above the keypad area.
Reassembly is the reverse of the disassembly.