Log In
Search suggestions

    My Vehicles

    1994 Mercury Grand Marquis 4.6L SFI 8cyl

    Find a Store

    Select Store

    Save 20% On Orders Over $100

    Use Code: HOLIDAY20

    See Details

    Get A $25 AutoZone Gift Card

    Use Code: HOLIDAY25

    See Details

    Chrysler Full-Size Vans 1967-1988 Repair Guide

    Shift Linkage

    Print

    ADJUSTMENTS



    A-230, A-250

    See Figures 1 and 2

    Click image to see an enlarged view

    Fig. Fig. 1: Exploded view of the A-230/250 gearshift linkage



    Click image to see an enlarged view

    Fig. Fig. 2: Using a prybar, hold the crossover blade in neutral to engage both shift lever pins

    1. Adjust the length of the 2nd-3rd shift rod so the position of the shift lever on the steering column will be correct.
    2.  
    3. Loosen the swivel clamp bolts on each shift rod.
    4.  
    5. Move the 2nd-3rd shift lever into 3rd position (this means moving forward lever forward). Move the steering column lever until it is about 5° above the horizontal. Tighten the shift rod swivel clamp bolt to 125 in. lbs.
    6.  
    7. Shift the transmission to neutral. Place a small prybar between the crossover blade and the 2nd-3rd lever at the steering column so that both lever pins are engaged by the crossover blade.
    8.  
    9. Set the 1st-Reverse lever in neutral. Tighten the swivel clamp bolt to 125 in. lbs.
    10.  
    11. Remove the tool from the crossover blade, and check all shifts for smoothness.
    12.  

    A-390

    See Figure 3

    Click image to see an enlarged view

    Fig. Fig. 3: Exploded view of the A-390 shift linkage

    1. Loosen both shift rod swivels. Make sure that the transmission shift levers are in the neutral position (middle detent).
    2.  
    3. Move the shift lever to line up the locating slots in the bottom of the steering column shift housing and bearing housing. Install a suitable tool in the slot.
    4.  
    5. Place a suitable tool between the crossover blade and the 2nd-3rd lever at the steering column so that both lever pins are engaged by the crossover blade.
    6.  
    7. Tighten both rod swivel bolts. Remove the gearshift housing locating tool.
    8.  
    9. Remove the tool from the crossover blade at the steering column and shift the transmission through all gears to check adjustment and crossover smoothness.
    10.  
    11. Check for proper operation of the steering column lock in reverse. With the proper linkage adjustment, the ignition should lock in reverse only, with hands off the gearshift lever.
    12.  

    Overdrive-4

    See Figure 4

    Click image to see an enlarged view

    Fig. Fig. 4: Linkage adjustment point for the Overdrive-4 (A-833) transmission

    1. Place the floorshift lever in Neutral. Insert a 1 / 4 " drill bit through the bottom of the shifter to hold the levers in place.
    2.  
    3. Detach the shift rods. Make sure that the three transmission levers are in their Neutral detents.
    4.  
    5. Adjust the shift rods to make the length exactly right to fit into the transmission levers. Start with the 1st-2nd shift rod. It may be necessary to remove the clip at the shifter end of the rod to rotate this rod.
    6.  
    7. Replace the washers and the clips.
    8.  
    9. Remove the drill bit and check the shifting action.
    10.  

    A-745 and A-903

    See Figure 5

    Click image to see an enlarged view

    Fig. Fig. 5: Shift linkage selector components for the A-745/903 transmissions-located on the steering column

    CROSSOVER
    1. With the transmission in Neutral, it should be possible to move the gearshift lever from the 2nd-3rd plane to the 1st-Reverse plane and back again, smoothly. If not, or if the action is rough, proceed with the adjustment.
    2.  
    3. Place the transmission in Neutral.
    4.  
    5. Loosen the 2nd-3rd control rod adjuster at the transmission.
    6.  
    7. Move the lever as necessary to align the notches in both shift levers.
    8.  
    9. Tighten the adjuster nut.
    10.  

    CROSSOVER INTERFERENCE
    1. Have an assistant place the gearshift lever in Neutral and hold it there in an upwards position.
    2.  
    3. Check the clearance between the pin and the 1st-Reverse shift lever slot.
    4.  
    5. Move the gearshift lever down and check the clearance between the pin and 2nd-3rd shift lever slot. The two clearances should be equal. If not, hard shifting will be the result. To correct or equalize the clearances:
    6.  
    7. Loosen the tube support clamp and move the lever support bracket up or down as required.
    8.  
    9. Make sure that the floor mat does not interfere with the shift tube, that there is no damage to the control rods or linkage, and that there is no misalignment between the steering column and shift lever tube.
    10.  

    CONTROL ROD
    1. Place the transmission in Neutral.
    2.  
    3. Loosen and back off both adjusting nuts on the 1st-Reverse and 2nd-3rd control rods.
    4.  
    5. Move the crossover pin into engagement with the 2nd-3rd lever slot.
    6.  
    7. Without moving the 2nd-3rd lever, adjust and tighten the 2nd-3rd shift rod adjusting nut to 70 in. lbs.
    8.  
    9. Move the gearshift lever across the Neutral position to align the slots in the lever hubs. Without moving the 1st-Reverse shift rod, adjust and tighten the 1st-Reverse shift rod adjusting nut to 70 in. lbs.
    10.  
    11. Road test the van. If the shifts are rough, re-adjust the 1st-Reverse shift rod adjuster.
    12.  

     
    AutoZone Logo