Figure 7-37. Inspecting Tappet

Figure 7-36. Delivery Valve Test Assembly - TM-5-6115-585-34_140

Figure 7-39. Control Unit Assembly - TM-5-6115-585-34_142

TM-5-6115-585-34 Generator Set Diesel Engine Driven Tactical Skid Mtd 5 KW 1 Phase 2 Wire 1 Phase-3 Wire 3 Phase-4 Wire 120 120/240 and 120/208 Volts Manual
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Figure 7-37. Inspecting Tappet (5) Inspect the tappet (20) for possible wear at the contact areas. The primary contact areas are the tappet contact area and the cam contact area (figure 7-37). Replace the tappet if wear indentations exceed 0.002’. The tappet thickness measured between the plunger button contact surface and the cam contact area must be 0.207” or larger. (6) The pump housing (6, figure 7-34) should be washed in a cleaning solvent. Check all the screw threads in the housing, damaged threads can be re- paired using thread inserts. (7) Examine the pump housing for cracks or other damage which will cause oil leakage. Replace cracked housings. NOTE The control unit assembly is serviceable as a unit only. Each control unit assembly is fur- nished with a factory fitted plunger sleeve pin. (8) Holding sleeve of control unit assembly (4), rotate lever; shaft must turn freely. If a binding condition exists, wash assembly in a cleaning agent, and repeat procedure. If binding condition is still present, control unit assembly must be replaced. Also check to make certain that weld holding lever to shaft is intact. (9) The flat end of plunger sleeve pin (5) must be checked for clearance in the mating slot of the plunger sleeve. If the clearance is greater than 0.0015”, the entire control unit must be replaced. TM5-6115-585-34 NAVFAC P-8-262-12 TO-35C2-3-455-2 TM-05684C-34 (10) Plunger sleeve pin (5) must fit snug but must be free to rotate in control unit assembly. NOTE New part clearance is 0.0002-0.00081". If clearance exceeds 0.0015”, replace control unit assembly. d. Reassembly (see figure 7-34). NOTE Replace all copper and “O" ring gaskets. (1) After all parts have been thoroughly cleaned and inspected and after all worn units have been re- placed, dip the individual parts in clean fuel oil. (2) Invert the hydraulic head (17) and place it on a clean bench so that the head locating slot is forward. (3) Refer to figure 7-38 and align the plunger drive pin (1) into the plunger (2) so that the head of the plunger drive pin is in the line with the distribu- tor slot. Turn the plunger drive pin until its long side is parallel to the length of the plunger with long end up. Figure 7-38. Assembling Hydraulic Head 7-35

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