Q: How to Service and Repair Rear Coil Springs on Mercury Mariner?
A: The first step for servicing or repairing the rear coil spring involves installing the vehicle on a hoist with the transmission set to the neutral position. First support the wheel knuckle then unfasten the upper ball joint nut followed by removal of the lower shock absorber nut together with its washer and bolt. The technician should first eliminate the upper arm inner bolt then proceed to loosen the lower arm inner bolt. Remember the positions of coil spring insulator and coil spring before carefully lowering the wheel knuckle support in order to remove the coil spring. When installing place the coil spring in the noted position with its insulator then use caution while raising the wheel knuckle support. The installation process requires you to fasten both upper and lower inner arm bolts to 115 Nm (85 ft. lbs.). After placing the lower shock absorber bolt with washer the nut should be tightened to 175 Nm (129 ft. lbs.). After installing the upper ball joint nut you must take off the wheel knuckle support while torquing the nut to 63 Nm (46 ft. lbs.).
Q: What Safety Precautions and Steps Should Be Followed When Servicing Front Coil Springs and Shock Absorber Assembly on Mercury Grand Marquis?
A: The necessary safety steps during service of coil spring and shock absorber assemblies become vital because unassisted shock absorber gas pressure exists in these systems. A spring compressor should always be used during shock absorber and spring assembly disassembly to prevent bodily harm. When needing to replace suspension fasteners users must choose new parts which match the needed part number and avoid reassembly errors during installation that affects retention strength. The procedure must start with stopping the fire suppression system operation. Secure the vehicle on a hoist with the transmission in NEUTRAL position before removing shock absorber together with spring assembly. The vise should be applied with care to prevent damage to the shock absorber tube. Identify positions on the upper mounting bracket along with spring and shock absorber so they can be restored during reassembly. The part number of the new spring must match the code found on the vehicle certification label for proper installation. A proper spring compressor enables compression of the spring before the nut can be discarded while the shock absorber rod stays under control. After detaching both the mounting bracket and dust boot as an assembly the spring and spring compressor should be carefully extracted. Checks for damage must be performed on the lower and upper spring seats and spring insulator before assembly begins while a new mounting bracket should be installed if needed. The installation of a new spring must be accompanied by proper part number verification while inspecting spring paint condition. Insert the shock absorber into the vise if necessary followed by the installation of shock and spring compressor onto the strut with mark alignment matching disassembly. After installing the new shock rod nut with 50 Nm (37 ft. lbs.) torque the spring compressor can be removed to install both shock absorber and spring assembly. Complete installation of fire suppression system requires a proper system restart procedure after following all necessary safety protocols.
Q: How to Properly Service and Install Coil Springs in a Shock Absorber Assembly on Mercury Mountaineer?
A: The service of coil spring starts by taking out the lower arm first. The first step begins by separating the shock absorber upper mount nuts then removing the shock absorber and spring assembly. You should tighten the components during installation to a torque of 30 Nm (22 ft. lbs.). Detailed instructions for shock absorber and spring assembly assembly as well as disassembly operations can be found within prescribed procedures. The installation process ends when you execute the reverse actions used in removal. The service could experience major complications from using inferior quality or substitute design parts instead of genuine parts with matching part numbers for replacement needs. You must follow the specified torque values during reassembly as a way to properly maintain the operational retention of essential suspension fasteners.