PLATFORM AS 9R7779 - Caterpillar

Illustration 25 g03730469
Table 10
443-4177 Parts List    
No.     Quantity     Part No.     Name    
1     1     443-4174     Fixture Assembly    
2     2     9U-6272     Nylon Screw    
3     1     443-4175     Rod Assembly    
Tool is only used with the Digital Dial Indicator (1U-8869)
Low height tool used on No. 2 Cylinders or injector adjustment on MT4400 Trucks
Used to test and adjust fuel systems
Used to test and adjust fuel systems, including fuel timing, rack synchronization, and fuel setting
Collets to hold digital dial indicator built-in
Fits all 3516 enginesSpecifications
Table 11
Length     155 mm (6.10 in)    
Width     40 mm (1.57 in)    
Weight     0.18 kg (.40 lb)    Using the 6V-3075 Dial Indicator (alternate method)
Refer to TMI (Technical Marketing Information) for the correct fuel setting for the engine that is being checked.
Illustration 26 g03401931
(1) 6V-3075 Dial Indicator (2) 9U-5137 Magnetic Fixture (3) 9U-5138 Setting Gauge (4) 9U-6272 Nylon Screw (5) 122-0449 Rod Sleeve Extension (6) 122-0451 Timing Fixture Rod
Install the 8S-3675 Indicator Contact Point onto the indicator (1) .
Install Sleeve Extension (5) in the small diameter tube of Timing Fixture (2). Place Rod Assembly (6) in Sleeve Extension (5) .
Install Dial Indicator (1) in Sleeve Extension (5) .
Put Dial Indicator (1) and Timing Fixture (2) onto the Set Gauge (3). The Timing Fixture (2) should be on the top surface of the Set Gauge (3) with the Rod Assembly (6) on the bottom 64.34 mm (2.5331 inch) step.
Move the Dial Indicator (1) in the Sleeve Extension (5) until both needles indicate zero. Tighten Nylon Screw (4). The dial indicator has now been zeroed to a standard fuel timing dimension of 64.34 mm (2.53317 inch).Note: Some Dial Indicators (1) have a 0.25 mm (0.010 inch) smaller diameter extending about 4.0 mm (0.158 inch) up from the end of their stems. When zeroing these indicators in the bore of the 122-0449 Rod Sleeve Extension , the Nylon Screw (4) will contact the indicator stem on this step. This can cause the indicator to cock in the bore and result in incorrect readings. It is recommended that the 136-4587 Collet Extension and 5P-4814 Collet Clamp be used with the "stepped" indicator or that the 1U-8869 Dial Indicator be used.
Illustration 27 g03402357
(1) 6V-3075 Dial Indicator (2) 9U-5137 Magnetic Fixture (7) Injector Follower (8) Shoulder on injector body.
Make sure the top surfaces of (7) and (8) are clean and dry.
Put Dial Indicator (1) and Timing Fixture (2) in position on the injector to be checked. Make sure that the magnetic base of the timing fixture is on the top surface of Injector Follower (7). The extension rod will rest on the top surface of Injector Shoulder (8) .
The dial indicator pointers must indicate 0.00 0.20 mm (0.00000 0.0079 inch).
If the dial indicator pointers indicate 0.00 0.20 mm (0.00000 0.0079 inch), or are within the