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Automatic Transmission/Transaxle: Adjustments


GEARSHIFT LINKAGE ADJUSTMENT
(Column Shift) (Fig. 1)
EXCEPT IMPERIAL MODELS

When it is necessary to disassemble linkage rods from levers which use plastic grommets as retainers, the grommets should be replaced with new ones. Use a prying tool to force rod from grommet in lever (pry only where grommet and rod attach-not on the rod itself), then cut away old grommet. Use pliers to snap new grommet into lever and rod into grommet.
(1) To insure proper adjustment, make sure adjustable swivel block is free to turn on shift rod. Disassemble and clean or repair parts to assure free action, if necessary.
(2) Place gearshift lever in "P" (PARK) position.
(3) With all linkage assembled and the adjustable swivel lock bolt loose, move the shift lever on transmission all the way to the rear detent position (PARK).
(4) Tighten adjustment swivel lock bolt to 90 in. lbs. (10 N.m).
(5) Check adjustment as follows:
(a) Detent position for neutral and drive should be within limits of hand lever gate stops.
(b) Key start must occur only when shift lever is in "park" or "neutral" positions.

IMPERIAL MODELS

(1) Loosen 2 screws that attach "PRND21" switch to steering column. Be sure shift lever is in the "Park" position.
(2) Holding "PRND21" switch in position on column jacket, apply a downward pressure on switch, and tighten switch attaching screws.
(3) Check each gear position to insure that the proper character is illuminated and that no "double characters" are illuminated. It is normal for more than one character to be illuminated during transition from one gear position to the next.

LINKAGE ADJUSTMENT (Console Shift)(Fig. 2)






(1) Assemble all linkage parts, leaving adjustable rod swivel lock screw loose.
(2) Place console lever in PARK and move shift control lever on transmission all the way to the rear (in PARK detent).
(3) Tighten adjustable swivel lock screw to 90 in. lbs. (10 N.m) with no load applied in either direction on linkage.
(4) Check Adjustment as follows:
(a) Shift effort must be free and detents feel crisp. All gate stops must be positive.
(b) Detent position must be close enough to gate stops in neutral and drive to assure that hand lever will not remain out of detent position when placed against gate and then released.
(c) Key start must occur only when shift lever is in park or neutral positions.
(5) If console removal is required, disconnect battery ground cable. Insert a 1/16 inch diameter wire in hole in bottom of knob and push up on wire. To remove knob retaining clip, insert long nose plier tips in clip holes, push downward lightly and turn counterclockwise (action similar to a light bulb socket). Pull knob straight up to remove from gearshift lever. Proceed as outlined in console removal.
(6) After console is in place, install shift knob by reversing the procedure in step (5).
(7) Connect battery ground cable.

THROTTLE ROD ADJUSTMENT

With engine at operating temperature and carburetor off fast idle cam, adjust idle speed of engine using a tachometer. Refer to "Fuel System, for idle speed Specifications and carburetor linkage adjustment.











ADJUSTMENT PROCEDURE-ALL (Figs 3 and 4)

(1) Perform transmission throttle rod adjustment while engine is at normal operating temperature otherwise make sure carburetor is not on fast idle cam.
(2) Raise vehicle on hoist to make adjustment at transmission throttle lever.
(3) Loosen adjustment swivel lock screw.
(4) To insure proper adjustment, swivel must be free to slide along flat end of throttle rod so that preload spring action is not restricted. Disassemble and clean or repair parts to assure free action, if necessary.
(5) Hold transmission lever firmly forward against its internal stop and tighten swivel lock screw to 100 in. lbs. (11 N.m).
(6) The adjustment is finished and linkage backlash was automatically removed by the preload spring.






(7) If lubrication is required see Lubrication. Multipurpose Grease NLGI Grade 2 E.P. or MOPAR Multipurpose Lubricant, Part Number 252035 or equivalent. Do not lube ball joints or throttle control cable.
(8) Lower vehicle, reconnect choke if disconnected, and test linkage freedom of operation by moving, throttle rod rearward, slowly releasing it to confirm it will return fully forward.

BAND ADJUSTMENTS Kickdown Band (Front)






The kickdown band adjusting screw is located on left side of the transmission case (Fig. 5).
(1) Loosen lock nut and back off nut approximately five turns. Test adjusting screw for free turning in the transmission case.
(2) Using wrench, Tool C-3380-A with adapter C-3705, tighten band adjusting screw 47 to 50 in. lbs. (5 N.m). If adapter C-3705 is not used, tighten adjusting screw to 72 in.lbs. (8 N.m) which is the true torque. Transmission and Converter Removal






(3) Back off adjusting screw the number of turns listed in "Specifications". Hold adjusting screw in this position and tighten lock nut to 35 ft. lbs. (47 N.m).

Low-Reverse Band (Rear)






(1) Raise vehicle, drain transmission fluid from loosened oil pan and remove oil pan.
(2) Loosen adjusting screw lock nut and back off nut approximately five turns (Fig. 6). Test adjusting screw for free turning in the lever.
(3) Using wrench, Tool C-3380-A tighten band adjusting screw to 72 in. lbs. (8 N.m).
(4) Back off adjusting screw the number of turns listed in "Specifications". Hold adjusting screw in this position and tighten lock nut to 30 ft. lbs. (41 N.m).






NOTE: The A-904/6 cylinder transmission (Fig. 7) has an allen socket adjustment screw at servo end of lever. After removing lock nut, this screw is tightened to 41 in. lbs. (5 N.m) true torque then backed out the specified number of turns. Install and tighten lock nut correct throttle pressure adjustment before adjusting to 30 ft. lbs. (41 N.m).

(5) Reinstall oil pan using a new gasket. Tighten The approximate adjustment is 1-5/16 inches, measured from valve body to inner edge of adjusting screw (Fig. 8). pan bolts to 150 in. lbs. (17 N.m).
(6) Fill transmission with "DEXRON II" type Automatic Transmission Fluid.

Hydraulic Control Pressure Adjustments

Line Pressure

An incorrect throttle pressure setting will cause incorrect line pressure readings even though line pressure adjustment is correct. Always inspect and correct throttle pressure adjustment before adjusting line pressure.






The approximate adjustment is 1-5/16 inches, measured from valve body to inner edge of adjusting screw (Fig. 8). However, due to manufacturing tolerances the adjustment can be varied to obtain specified line pressure.

The adjusting screw may be turned with an Allen wrench. One complete turn of adjusting screw changes closed throttle line pressure approximately 1-2/3 psi. Turning adjusting screw counterclockwise increases pressure, and clockwise decreases pressure.

Throttle Pressure






Throttle pressures cannot be tested accurately. Therefore, the adjustment should be measured if a malfunction is evident.
(1) Insert gauge pin of Tool C-3763 between the throttle lever cam and kickdown valve (Fig. 9).
(2) By pushing in on tool, compress kickdown valve against its spring so throttle valve is completely bottomed inside the valve body.
(3) As force is being exerted to compress spring, turn throttle lever stop screw with allen wrench until head of screw touches the throttle lever tang with throttle lever cam touching tool and the throttle valve bottomed. Be sure adjustment is made with spring fully compressed and valve bottomed in the valve body.