3003, 3013, 3014 and 3024 Engines for Caterpillar Built Machines Caterpillar

Illustration 1	g00458938
Idler gear and components of the engine oil pump

Type ... Gerotor pump

(1) C-clip

(2) Collar

(3) Spring

(4) Shim

(5) Oil pump cover

(6) Inner rotor

Number of lobes ... 4

(7) Spring

(8) Outer rotor

Number of lobes ... 5

Illustration 2	g00459701

(A) Clearance between the inner rotor and the outer rotor is the following value. ... 0.01 to 0.15 mm (0.0004 to 0.006 inch)

Service Limit ... 0.25 mm (0.010 inch)

(9) Bushing

(10) Idler gear

(11) Thrust washer

Illustration 3	g01290817

(1) C-clip

(2) Collar

(4) Shim

(12) Feeler gauge

(B) When the components of the oil pump are installed on the front housing, measurement (B) between C-clip (1) and collar (2) must not exceed the following distance. ... 0.10 to 0.15 mm (0.004 to 0.006 inch)

Service limit ... 0.20 mm (0.008 inch)

The distance between the faces is adjusted with shims (4). The following sizes of shims are available:

• 0.10 mm

• 0.15 mm

• 0.20 mm

• 0.50 mm