HOUSING AS 2086067 - Caterpillar

The camshaft must be correctly timed with the crankshaft before an adjustment of fuel timing is made. The timing pin must be removed from the camshaft before the crankshaft is turned or damage to the cylinder block will be the result.
Refer to Crankshaft Positions For Fuel Timing And Valve Lash Setting. Ensure that the engine is in time. With the two crankshaft positions that are given in the table, all of the fuel injectors can be checked or adjusted. The setting will ensure that the pushrod lifters are off the lobes and on the base circles of the camshaft.
Before a check or an adjustment of the fuel timing can be made, the tooling must be set to the correct dimension. Use the following procedure in order to set the tooling to the correct dimension:
Illustration 1 g00359732
Adjustment of fuel timing tools (1) 6V-3075 Dial Indicator. (2) 6V-9058 Fixture Assembly. (3) 6V-9056 Setting Gauge. (4) 8S-3675 Indicator Contact Point .
Install the 8S-3675 Indicator Contact Point (4) on the 6V-3075 Dial Indicator (1) .
Install 6V-3075 Dial Indicator (1) in the collet of the 6V-9058 Fixture Assembly (2) .
Install the 6V-3075 Dial Indicator (1) with the 6V-9058 Fixture Assembly (2) onto the 6V-9056 Setting Gauge (3). Ensure that the magnetic base of the timing fixture is on the top surface and that the contact point is on the bottom step.Note: The 6V-3075 Dial Indicator (1) has two or three dials that register. The larger dial has marks for every 0.01 mm (0.0004 inch). The red numbers on the dial are for minus readings. The black numbers on the dial are for plus readings. The smaller dial has marks for 1.00 mm (0.040 inch) (one complete revolution of the large dial).
Table 2
Dial Indicator Setting Table    
Injector Part Numbers     184-2527 Fuel Injector Gp and earlier     224-9090 Fuel Injector Gp and later    
Engine Timing     14.0 degrees before top center     11.5 degrees before top center    
Fuel Timing Dimension    
120.25 mm (4.734 inch)    
121.3 mm (4.78 inch)    
Dial Indicator Setting    
+ 2.05 mm (+ 0.081 inch)    
+ 3.10 mm (+ 0.122 inch)    Note: The setting dimension from the chart is a positive "+" number. Move the dial indicator into the collet until both dials register "0". Place the "0" on the large dial in the 12 o'clock position in order to facilitate reading the dial indicator. If the setting dimension is "0", tighten the collet. If the setting dimension is not "0", move the dial indicator farther into the collet until the large dial indicates the correct plus "+" setting. Then, tighten the collet.
The engine may have injectors with different part numbers installed. Verify the part number of the injector that is being set. Set the indicator to the appropriate dimension that is listed in Table 2.
Illustration 2 g00557830
Fuel timing (5) Injector retainer (6) Shoulder on the fuel injector body (7) Fuel