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VACUUM RESERVOIR DESCRIPTION The vacuum reservoir is a plastic storage tank con- nected to an engine vacuum source by vacuum lines. OPERATION The vacuum reservoir is used to supply the vac- uum needed to maintain proper speed control opera- DIAGNOSIS AND TESTING - VACUUM (1) Disconnect vacuum hose at speed control servo and install a vacuum gauge into the disconnected (2) Start engine and observe gauge at idle. Vac- uum gauge should read at least ten inches of mer- (3) If vacuum is less than ten inches of mercury, determine source of leak. Check vacuum line to (4) If vacuum line to engine is not leaking, check for leak at vacuum reservoir. To locate and gain (5) Verify operation of one-way check valve and check it for leaks. (a) Locate one-way check valve. The valve is located in vacuum line between vacuum reservoir (b) Connect a hand-operated vacuum pump to reservoir end of check valve. Apply vacuum. Vac- (c) Connect a hand-operated vacuum pump to vacuum source end of check valve. Apply vacuum. apply vacuum. If vacuum will not hold, diaphragm REMOVAL The vacuum reservoir is located under the vehicle battery tray (Fig. 6). (1) Remove battery and battery tray. Refer to Bat- tery Removal/Installation. (2) Disconnect vacuum supply line at reservoir (Fig. 6). (3) Remove screw securing reservoir to inner fender. (4) Remove reservoir from vehicle. INSTALLATION The vacuum reservoir is located under the vehicle battery tray (Fig. 6). (1) Position reservoir to vehicle and install mount- ing screw. (2) Tighten screw to 1.2 N·m (10 in. lbs.) torque. tery Removal/Installation. Fig. 6 Vacuum Reservoir Removal/Installation 1 - SCREW TJ SPEED CONTROL 8P - 7 |