159210-3200 ZEXEL 9 421 612 788 BOSCH GOVERNOR SPRING 9421612788 1592103200 1157231910

2. Remove bolts (1) that hold cover (2) in position.3. Remove cover (2). 4. Remove bolts (3), retainer (4) and automatic timing advance (5).Install Automatic Timing Advance
1. Put automatic timing advance (1) in position in the housing. 2. Install retainer (3) and bolts (2).3. Check fuel injection pump timing with tool (A). See CAMSHAFT TIMING FOR THE FUEL INJECTION PUMP in TESTING AND ADJUSTING.4. Tighten bolts (2) evenly to a torque of 20 lb.ft. (25 N m). Remove tool (A).5. Tighten bolts (2) to a torque of 100 5 lb.ft. (135 7 N m).6. Turn the crankshaft two complete turns and check the camshaft timing again. 7. Install cover (4) and the bolts.Disassemble Automatic Timing Advance
start by:a) remove automatic timing advance 1. Remove ring (1) and gear assembly (2) from the flange assembly.2. Remove the slides from the weights. 3. Remove springs (4) and weights (3) from the flange assembly.Assemble Automatic Timing Advance
1. Put weights (2) in position in flange assembly (1) as shown.2. Install springs (3) in flange assembly (1). 3. If pistons (6) were removed from the gear assembly because of wear, use new parts for replacement. Install new pistons (6) until they are .435 .005 in. (11.05 .13 mm) above the inside surface of gear assembly (4). Move the metal (peen) on the outside surface of gear assembly (4) in four places around each piston to hold them in position.4. Use 1P808 General Purpose Lubricant to hold slides (5) in position on gear assembly (4).5. Install gear assembly (4) on flange assembly (1). Make sure slides (5) fit in grooves of the weights.6. Install the ring that holds gear assembly (4) to the flange assembly.end by:a) install automatic timing advance