DRIVE GP-PUMP 5T2825 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     5P-7307     Engine Turning Tool     1    
B     0T-0065     Bolt     1    
C     9S-9155     Spacer     1    
8S-2264 Pump Impeller Puller     2    
0T-0513 Bolt     2    
5P-1075 Hard Washer     2    Start By:
Remove the front housing. Refer to Disassembly and Assembly, "Front Housing - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Follow the procedure in Steps 3 and 4 in order to time the fuel injection pump when the front cover is removed. Follow the procedure in Steps 6 and 7 in order to time the fuel injection pump when the front cover is installed.Note: The No. 1 piston should be at the top center position on the compression stroke at the start of all timing procedures.Note: The engine is seen from the flywheel end when the direction of the crankshaft rotation is given.
Illustration 1 g00474593
Remove the electric starting motor and install Tool (A) .
Illustration 2 g00474592
Turn the crankshaft counterclockwise until the "C" on the crankshaft gear and the "C" on the camshaft gear are in alignment.
Illustration 3 g00474594
Remove two plugs and install Tool (B) in the flywheel housing. The large plug hole is for viewing.
To find the top center compression stroke for the No. 1 piston, use Tool (A) in order to turn the flywheel clockwise for approximately 30 degrees. This procedure should be used to remove all of the end play from the timing gears.
Use Tool (A) in order to turn the flywheel counterclockwise in the direction of the engine rotation until Tool (B) can be installed in the flywheel. The piston is at the top center position.Note: If you go past the bolt hole, you must start the procedure again.Note: Remove the breather assembly from the valve mechanism cover. The piston is at the top center position on the compression stroke when the inlet valve is closed and the exhaust valve is closed for the No. 1 cylinder. You must be able to move the rocker arms up and down with your hand.
Illustration 4 g00474595
Remove bolt (1) and washer (2) that secures the automatic timing advance.
The automatic timing advance must have support during removal in order to help prevent damage to components.
Illustration 5 g00474596
Install bolt (1) and leave a 6.35 mm (.250 inch) gap. Install Tool (C), as shown. Tighten the stud in order to loosen the fuel pump drive gear from the taper on the fuel injection pump camshaft.
Remove Tool (C) and bolt (1). Remove the automatic timing advance.