TAPPET 2785125 - Caterpillar

Removal Procedure
Accidental engine starting can cause injury or death to personnel working on the equipment.To avoid accidental engine starting, disconnect the battery cable from the negative (−) battery terminal. Completely tape all metal surfaces of the disconnected battery cable end in order to prevent contact with other metal surfaces which could activate the engine electrical system.Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g02494796
Turn OFF the air supply. Release the air pressure in the system.
Disconnect the hose assembly from tee (1).
Disconnect the harness assemblies from air starting motor (2).
Attach a suitable lifting device to air starting motor (2). Remove bolts (3) and air starting motor (2) from the flywheel housing. The weight of air starting motor (2) is approximately 30 kg (66 lb).
Remove the gasket from the air starting motor. Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Install a new gasket on the air starting motor.
Illustration 2 g02494796
Attach a suitable lifting device to air starting motor (2). Position air starting motor (2) into the flywheel housing and install bolts (3). The weight of air starting motor (2) is approximately 30 kg (66 lb).
Connect the harness assemblies to air starting motor (2).
Connect the hose assembly to tee (1).
Turn ON the air supply.