PUMP GP-HYDRAULIC 3156855 - Caterpillar

Removal Procedure
Start By:
Remove the engine oil pan . Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install" for the correct procedure.
Remove the camshaft gear. Refer to Disassembly and Assembly, "Camshaft Gear - Remove and Install" for the correct procedure.
Remove the fuel injection pump. Refer to Disassembly and Assembly, "Fuel Injection Pump - Remove" for the correct procedure.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shorten component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
If necessary, remove the fan drive. Refer to Disassembly and Assembly, "Fan Drive - Remove and Install" for the correct procedure.
Illustration 1 g02729108
Remove bolts (5) from front housing (1). Note: Note the positions of the different length bolts for installation purposes.
Remove front housing (1) from the cylinder block and dowels (6) (not shown).
Dowels (6) (not shown) should only be removed if damaged.
If necessary, follow Step 5.a through Step 5.c in order to remove engine oil filler (2).
Remove bolts (3) from engine oil filler (2).
Remove engine oil filler (2) from front housing (1).
Remove O-ring seal (4) (not shown).
Illustration 2 g03025257
Illustration 3 g03025256
If necessary, follow Step 6.a through Step 6.c in order to remove cover plate (8) from the front housing.
Remove bolts (9) from cover plate (8).
Remove cover plate (8) from front housing (1).
Remove O-ring seal (10) from the cover plate.
If necessary, remove plug (7) in Position (Y) from the front housing.