TM-9-2520-254-34 Direct Support for M113 TX100-1 Transmission 2520-00-066-4240 Download

Table 5-1. Hydraulic Pressure Chart Mail Pressure (psi) : Range Low (converter) (lockup) Int. (converter (lockup) High [converter) (Iockapl Selector position Throttle setting Closed Full, at detent Fu1l, through detent I I 1 225-270 270-315 280-325 1 100-120 115-135 120-140 1.2 225-270 270-315 280-325 1.2 100-120 115-135 120-140 2-3 135-180 180-225 190-235 ~.:{ 100-120 115-135 120-140 NOTE Lockup pressures should be measured at 1,900 to 2,000 rpm engine speed. Use the vehicle service brakes, if necessary, while measuring full throttle “at detent” or “through detent” pressures. converter pressures for low range (first gear) and intermediate range (second gear) “at detent” or “through detent” should be measured while the transmission output is stalled. Front Governor (Gl) Pressure: Front governor pressure is measured during lockup while operating in selector position 1. (; 1 prwsure Engine speed .30 psi 1,850 to 1,900” rpm 80 psi 2,300 tO 2,400” rpm G~ar Throttle position High [ 3d lockup) “Tllrougt] detent” (1) With manual selector control at neutral (N), start engine and run it until transmission temperature reaches normal (180° to 200° F.). Shift through all gears to fully charge hydraulic system with oil. for NOTE It may be necessary to shift to high-range position and operate transmission at 1,200 to 1,500 rpm (1,000 rpm engine speed) while applying vehicle brakes (or locking transmission output) to reach norm a 1 operation temperature. CAUTION Do not allow converter-out (cooler) oil temperature to exceed 300° F. (2) Check transmission and external oil lines leakage. (3) Before any oil pressure tests are made, check engine idling speed. Engine idling speed is 500 to 600 rpm. Refer to note following (1) above. b. Oil Pressure. 5-62 Rear Governor (G2) Pressure: Rear governor pressure is measured during operation in high range (third gear) lockup when the engine speed is measured. It may be measured - during converter operation if transmission output speed is measured. (;2 prrnure Engine spwd Output speed .50 psi l,750rpm 2,275 rpm 80 psi 2,350 rpm 3,025 rpm Lubrication Pressure: Transmission lubrication pressure is checked at the cooler return line. Engine speed Pressure 2,3.50 rpm 10 tO 30 psi NOTE Do not attempt to connect or disconnect pressure gages while engine is operating. (1) There are four pressure check points on the transmission (fig. 5-142). Three are on the lower-left side of the transmission housing. The remaining one is at the lower-rear of the housing. These points have plugs which are removed to attach pressure gages as follows: Lockup pressure check point ( 1 / 8 NPTF)—0-400 psi gage from kit 4910-572-8612. Main pressure check point (¼ NPTFT)—0-400 psi gage from kit 4910-572-8612. Front governor (Gl) pressure check point (¼ NPTF)—0-100 psi gage from kit 4910-572-8612. Rear governor (G2) pressure check point ( 1 / 8 NPTF)—0-100 psi gage from kit 4910-572-8612.