Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM1983RAMPAGE BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - A-413 & A-470TESTINGLINE PRESSURE TESTSSELECTOR IN REVERSE
1983 Dodge and Ram Rampage Base, Automatic
Selector in Reverse
1983 Dodge and Ram Rampage Base, AutomaticSECTION Selector in Reverse
- Attach a 300 psi (21 kg/cm2 ) gauge to "low-reverse" port. Operate engine at 1600 RPM for test. Move selector lever on transaxle 4 detents forward from full rearward position (into selector "R" position).
- Low-reverse pressure should read 180-220 psi (12.6-15.4 kg/cm2 ) with throttle lever forward, gradually increasing to 260-300 psi (18.2-21.0 kg/cm2 ) as lever is moved rearward. This tests pump output, pressure regulation, condition of front clutch, and rear servo hydraulic circuits.
- Move selector lever on transaxle to "D" position to check that rear servo pressure drops to zero. This tests for leakage into rear servo, due to case porosity, which can cause reverse band burn out.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.