BORGESON Ford Mustang 1968-70 Power Steering Box Kit P/N 999021

Preparation - Before any disassembly, center the front wheels as precisely as possible. Steering Column Modification – The steering column tube must be cut back to make room for the longer Borgenson input shaft. Although there are people who have cut the steering column tube in chassis, it is much easier to remove the column to make the cut. Removing the column takes 20-30 min. Following column removal, remove the column collapsible shaft by tapping on the shaft’s rag joint flange. The steering column is two tubes co-axially assembled therefore two tubes need to be cut back. Cut 1” off each tube. Re-install column. Once the column is re-installed, now tap the steering shaft all the way up until it contacts the steering column tube to make room for the Borgenson rag joint. Borgenson Gearbox - Install the rag joint onto the Borgenson box and then position the PS box onto the frame rail using long quarter drive extensions as alignment and holding pins through the frame rail holes. If using stock exhaust manifolds, the box will fit with some maneuvering without removal of the manifold. Headers may require removal. Steering Interface - The Borgenson box has no internal stops so there is no default “center” or wheels forward position. However, the Borgenson sector shaft has three key slots to engage with the one key slot on the pitman arm. This allows for the Borgenson rag joint to be rotated to the closest steering wheel centered position and attach to the pitman arm. Attach the Ford steering shaft rag joint flange to the Borgenson flange. Using the centered draglink as the datum point, install the pitman arm bolt into the draglink and position the pitman arm onto the Borgenson sector shaft. Rotate the steering wheel, or from underneath the car, turn the Borgenson rag joint left or right as required until the best Borgenson key slot aligns to the pitman arm. Best is defined as the key on the sector shaft that most closely centers the steering wheel. Torque pitman arm to Borgenson sector shaft when satisfied. Borgenson PS Pump – Install pump and bracket. If using the smaller 3/8 bolts for stock cylinder heads, upgrade the bolts to grade 8 and use thick flat washers and split lock washers. Ensure that the bolts do not bottom out in the heads but tighten up nicely on the bracket. Install PS pressure hose first and then the return line. Initial Startup - Prefill the Borgenson reservoir to approximately 1 inch below the inlet neck and leave the cap off for initial startup and bleeding. Start engine. Turn wheel lock to lock 15-20 times topping off as required. There should be no pump whine, smoking or obvious frothing of the PS fluid. First Drive – Drive car slowly moving wheel left and right listening for pump or gearbox whine which you will be able to hear in the car if air is present or fluid is low. Drive car further making several turns lock to lock. If pump whine, smoke or frothing from the reservoir is persistent, install a PS cooler in the return line. Driving Impressions - Exceptional steering response without the feeling of being over-boosted. Road feel is positive but not jolting.