3064 and 3066 Engines for Caterpillar Built Machines Engine Oil Pump - Inspect Caterpillar


Engine Oil Pump - Inspect
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3064 and 3066 Engines for Caterpillar Built Machines [SENR5546]
LUBRICATION SYSTEM
PUMP GP-ENGINE OIL
3064 and 3066 Engines for Caterpillar Built Machines Engine Oil Pump - Inspect

If any part of the oil pump is worn enough in order to affect performance of the oil pump, the oil pump must be replaced.

Perform the following procedures in order to inspect the oil pump. Refer to Specifications, "Engine Oil Pump" for clearances and torques.

  1. Remove the cover for the engine oil pump. Refer to the Disassembly and Assembly, "Engine Oil Pump - Remove".

  1. Clean all of the parts. Look for cracks in the metal or other damage.



Illustration 1g00530573

Engine oil pump

(1) Driven gear assembly

(2) Drive gear assembly

(3) Oil pump gear

(4) Idler gear assembly

(5) Spindle


NOTICE

Before operation, the pump must be lubricated with clean engine oil and the pump must turn freely by hand or damage to parts can be the result.


Note: The minimum acceptable oil pressure at low idle is 100 kPa (15 psi).

Measure the backlash between the oil pump gear and the idler gear.

Note: Replace the gears if the backlash exceeds 0.35 mm (0.014 inch).

Note: The oil pump gear and the drive gear assembly are not serviceable if the oil pump gear is removed.




Illustration 2g00530644

(3) Oil pump gear

Note: Do not use a torch.

Heat the oil pump gear to 180° to 220°C (356° to 428°F) and support the end of the drive gear shaft in order to install the oil pump gear. Press the oil pump gear until the oil pump gear is flush with the end of the shaft.




Illustration 3g00530697

(6) Housing for oil pump gear

Measure the difference in the length of the assembly for the oil pump gear. Measure the depth in the oil pump housing.

Note: Replace the oil pump gear assembly if the clearance exceeds the service limit of 0.150 mm (0.0059 inch).

Measure the clearance between the oil pump gears and the oil pump housing with a feeler gauge.

Note: Replace the oil pump gear assembly if the clearance exceeds the service limit of 0.100 mm (0.0039 inch).




Illustration 4g00530702

(6) Housing for oil pump gear

(7) Cover

Measure the inside diameters of the bores of the shafts in the cover (7) and the oil pump housing (6). Measure the bores of the shafts.

Note: Replace the oil pump gear assembly, the cover, or the oil pump housing if the clearance exceeds the service limit of 0.150 mm (0.0059 inch).

Note: Replace the drive gear and driven gear as an assembly.




Illustration 5g00835890

(5) Spindle

(8) Idler gear bushing

Measure the inside diameter of the idler gear bushing.

Measure the diameter of the spindle.

Clean the surface of the oil pump cover (7). Install the cover to the oil pump housing (6). Install bolts for the oil pump cover.

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