Cummins — HG130, HG170 Engine Manual

www.changlin.com.cn Fuel System Bleeding Controlled venting is provided at the injection pump through the fuel drain manifold. Small amounts of air introduced by changing the filters or injection pump supply line will be vented automatically, if the fuel filter is changed in accordance with the instructions. No manual bleeding of fuel lines is required. NOTE: Manual bleeding is required if: The fuel filter is not filled prior to installation. Injection pump is replaced. High pressure fuel line connections are loosened or lines replaced. Initial engine start up or start up after an extended period of no engine operation. Vehicle fuel tank has run empty. Venting 8mm open the vent screw.

Operate the plunger on the lift pump until the fuel flowing from the fitting is free of air. Tighten the bleed screw. Torque Value: 9 NMTI [7 ft-lb] Injection pump 48 / 167 pages