TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Remove 1. Remove self-locking nut and machine screw (A) attaching large and small cushioned clamps from in- termediate crankcase breather tube and fuel return hose. 2. Disconnect fuel return hose (B) at check valve and remove hose. 3. Loosen breather tube hose clamps (C). 4. Remove two bolts and lock washers (D) attaching crankcase breather tube tee to rear fan drive and ac- cessory drive housing. Remove tube tee and hose from intermediate crankcase breather tube. Remove and discard tube tee gasket. 5. Remove fuel check valve (E). Install 1. Install fuel check valve (E). 2. Install a new hose on tube tee. Connect tube tee to intermediate crankcase breather tube. Position new gasket and install breather tube tee to rear fan and accessory drive housing and secure with two bolts and lock washers (D). 3. Tighten breather tube hose clamps (C). 4. Position fuel return hose (B) and connect to check valve. 5. Position large and small cushioned clamp and install a machine screw and self-locking nut (A) securing large and small cushioned clamps at intermediate crankcas e breather tube and fuel return hose. Figure 5-71. Removing or installing fuel return hose and crankcase breather tube t e e -engines prior to rerouting of fuel return hose. Disconnect 1. Remove three self-locking nuts and machine screws (A) attaching three small cushioned clamps on elec- trical lead to three large cushioned clamps on in- termediate crankcase breather tube. 2. Remove three large cushioned clamps (B) from front and rear intermediate crankcase breather tubes and front intermediate crankcase breather tube. 3. Remove self-locking nut and bolt (C) securing breather tube clamp to bracket. 4. Loosen two hose clamps (D) and remove rear in- termediate crankcase breather tube. Remove cushioned clamp and hose from tube. 5. Disconnect fuel injection pump electrical lead (E) from injection pump. Connect 1. Connect fuel injection pump electrical lead (E) to fuel injection pump. 2. Install cushioned clamp and hose on rear intermediate crankcase breather tube and position tube. Tighten two hose clamps (D). 3. Install bolt and self-locking nut (C) securing breather tube clamp to bracket. 4. Install one large cushioned clamp (B) on rear in- termediate breather tube and two large cushioned clamps (B) on front intermediate breather tube. 5. Install three machine screws and self-locking nuts (A) securing three small cushioned clamps on the electrical lead to the three large cushioned clamps on the crank- case front and rear intermediate breather tubes. Figure 5-72. Disconnecting or connecting intermediate crankcase breather tubes at fuel injection pump clamp. 5-43