GUARD AS-RADIATOR 2500720 - Caterpillar

2. Disconnect oil outlet line (1).3. Remove the bolts (2) that hold pump to pump motor. Remove the prelubrication oil pump.Install Prelubrication Oil Pump (D399)
TYPICAL EXAMPLE1. Put the prelubrication oil pump on the motor. Install the bolts.2. Install bolts that hold inlet line to oil pan base.3. Connect oil outlet line.Disassemble Prelubrication Oil Pump (D399)
start by: a) remove prelubrication oil pump 1. Remove inlet oil line (1) from pump.2. Remove bolts (2) that hold head assembly. Remove idler assembly from head assembly.3. Remove rotor from pump housing.4. Remove seals from housing. Remove screw (socket head) from housing.Assemble Prelubrication Oil Pump (D399)
1. Use tooling (A) to install seals in housing. Install seals with lips away from each other. Install screw (socket head) in oil outlet port. 2. Install idler on head assembly. Install rotor in housing. Put head assembly (1) on housing and install bolts. 3. Check end clearance of rotor with thickness gauge (2). The end clearance must be .003 to .005 in. (0.08 to 0.13 mm).4. Remove head assembly again and add gasket shims as needed to get the correct end clearance.5. Install inlet oil line on the pump.end by: a) install prelubrication oil pump