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starts must not be possible in any other gear posi- (3) With shift lever handle in: (a) PARK position—Apply forward force on cen- ter of lever and remove pressure. Engine starts (b) PARK position—Apply rearward force on cen- ter of lever and remove pressure. Engine starts (c) NEUTRAL position—Normal position. Engine starts must be possible. (d) NEUTRAL position—Engine running and brakes applied, apply forward force on center of ROAD TESTING Before road testing, be sure the fluid level and con- trol cable adjustments have been checked and adjusted if necessary. Verify that all diagnostic trou- Observe engine performance during the road test. A poorly tuned engine will not allow accurate analy- Operate the transmission in all gear ranges. Check for shift variations and engine flare which indicates Slippage indicated by engine flare, usually means clutch or overrunning clutch problems. A slipping clutch can often be determined by com- paring which internal units are applied in the vari- CLUTCH APPLICATION CHART SLP UD OD R 2C 4C L/R OVERRUNNING P–PARK ON R–REVERSE ON ON N-NEUTRAL ON D–OVERDRIVE FIRST ON ON* ON SECOND ON ON SECOND PRIME ON ON THIRD ON ON FOURTH ON ON LIMP-IN ON ON 2–FIRST ON ON* ON SECOND ON ON LIMP-IN ON ON 1–LOW ON ON ON *L/R clutch is on only with the output shaft speed below 150 rpm. HYDRAULIC PRESSURE TEST An accurate tachometer and pressure test gauges are required. Test Gauge C-3293-SP has a 300 psi Pressure Test Port Locations Only two pressure ports are supplied on the trans- mission case. The torque converter ON and torque To determine the line pressure, there are two avail- able methods. The DRB scan tool can be used to read 21 - 354 45RFE AUTOMATIC TRANSMISSION DN DIAGNOSIS AND TESTING (Continued) |