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ZF 1 FAULT DIAGNOSIS ZF AUTOMATIC GEARBOX Before referring to fault symptoms, carry out initial INITIAL STATIC CHECKS Check start positions ’P’ & ’N’ only ........................................................ Reverse lights ’R’ only .................................................................. Gear engagements N-D,N-3,N-2,N-1,N-R .......................................................... Full throttle Engine switched off, check full travel at engine and at ....................................................................... pedal. Oil level ’N’ selected, engine running at normal running ............................................................................ temperature. Pressure test 2000 rev/min 10 æ 0.3 bar, 150 æ 5 lbf/in 2 .................................................................... Idle pressure 6.9 æ 0.3 bar, 100 æ 5 lbf/in 2 at 665 to 735 rev/min. .................................................................... To fit pressure gauge Service tools: See Service tools, Automatic Gearbox 0 to 20 bar, 0 to 300 lbf/in 2 Pressure gauge. Flexible hose adaptor. 1. Site vehicle on a ramp [hoist]. (located 10cm from oil pipe) Fit hose adaptor 3. Fit hose to adaptor. vehicle, ensuring hose is clear of rotating parts 5. Carry out road test. See Road Test Procedure Remove pressure gauge 6. Reverse removal procedure. |