3304B & 3306B INDUSTRIAL & MARINE ENGINES Caterpillar


Air Starting Motors

Usage:

4N4370

Output torque (minimum) ... 70 N·m (50 lb ft)

with motor at ... 2240 rpm

at a pressure of ... 830 kPa (120 psi)

(1) Tighten the bolts in steps to a torque of ... 25 to 35 N·m (20 to 25 lb ft)

(2) Tighten the bolts in steps to a torque of ... 11.3 N·m (100 lb in)

7W9655, 7W0301

Minimum inlet pressure ... 620 kPa (90 psi)

Maximum inlet pressure ... 1030 kPa (150 psi)

(1) Install two 0.10 mm (.004 in) shims opposite each other between the rotor body and the end plate.

Tighten retaining nut until there is a slight drag on the shim stock. Tighten the clamping screw in the retaining nut. The clearance between end plate and the rotor can be 0.05 to 0.13 mm (.002 to .005 in).

(2) Tighten bolt to a torque of ... 68 N·m (50 lb ft)

(3) Tighten bolts to a torque of ... 75 N·m (55 lb ft)

(4) Tighten bolts to a torque of ... 75 N·m (55 lb ft)

(5) Tighten bolts to a torque of ... 27 N·m (20 lb ft)

(6) Tighten bolts to a torque of ... 27 N·m (20 lb ft)

Caterpillar Information System:

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3304B & 3306B INDUSTRIAL & MARINE ENGINES Testing & Adjusting
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