Camshaft Lobe Hits Fuel Transfer Pump.{1210, 1256} Caterpillar

Engine:

3126 (S/N: 9ZR1-UP)

3176B (S/N: 9CK1-UP)

Excavator:

EL240B (S/N: 5WG1-UP)

Wheel Tractor-Scraper:

613C Series II (S/N: 8LJ1-UP)

Introduction

Use the solution that is identified below.

Problem

The lobe of the 0R-4362 Camshaft Assembly interferes with the drive gear of the fuel transfer pump because the lobe is not ground correctly.

Solution

Illustration 1	g01950734
Camshaft

Illustration 2	g01950813
Detail of Area A (B) 13 mm (0.5 inch)

Inspect Area A in order to ensure that proper clearance (B) exists between the camshaft lobe and the drive gear of the fuel transfer pump.

Illustration 3	g01950739
Detail of Area A (C) 20.25 mm (0.8 inch)

If the camshaft interferes with the gear (C), then replace the camshaft with a correctly ground camshaft.