Transmission service manual page AT-55, troubleshooting and diag…

TROUBLE-SHOOTING AND DIAGNOSES Preliminary Checks (Prior to Road Testing) FLUID LEAKAGE If the governor cap is suspected: 1) 2) 3) 4) 5) Open hood. Remove snap retainer, governor cap and seal ring, then reinstall them. Refer to ON7 VEHICLE SERVICE, Clean the area around the governor cap. Run the vehicle at highway speeds. Check the governor cap for fresh leakage. To detect a fluid leak: 1) 2) 3) 4) 5) Raise vehicle. Clean area suspected of leaking. Start engine, apply foot brake, place control lever in drive, and wait a few minutes. Stop engine. Check for fresh leakage. FLUID CONDITION Examine the A.T.F. and note its color, texture, and odor. 1) 2) 3) Dark of Black Fluid: With a burned odor - Worn friction material. Milky Pink Fluid: Water Contamination Road water entering through filler tube or breather. Varnished Fluid, light to dark brown and tacky: Oxidation Over or Underfilling. Overheating. Road Testingx Perform road tests using "Symptom" chart, as follows: P RANGE 1. Place the control lever in "P" range and start the engine, Stop the engine and repeat the procedure in all other ranges and neutral. 2. Stop vehicle on a slight upgrade and place con. trol lever in P" range. Release parking brake to make sure vehicle remains locked, "R" RANGE 1, Manually shift the control lever from "P" to "R, and note shift quality. 2. Drive the vehicle in reverse long enough to detect slippage or other abnormalities. N" RANGE l. Manually shift the control lever from "Fl" and D to "N" and note quality. 2. Release parking brake with control lever in N" range. Lightly depress accelerator pedal to make sure vehicle does not move (When vehicle is new or soon after clutches have been replaced, vehicle may move slightly. This is not a problem.) "D" RANG E 1. Manually shift the gear selector from "N" to D" range, and note shift quality,