HEATER GP-ENGINE OIL 8W4065 - Caterpillar

Unplug cable connector (6) from the socket in order to remove the electronic module from the measuring head.
Use lint free tissue to clean the infrared filters for the diodes of the new electronic module.
Plug the cable connector of the new electronic module into the socket of the measuring head.
Tighten the three hexagonal distance bolts on the electronic module.
Install the cover plate. Secure the cover plate with the three screws.Note: A leaking seal will affect the sensitivity of the detector. If the seal is not good, an excess of air will enter the detector. Contaminated air can enter the detector. Intermittent alarms can result. Make sure that the flexible bellows for the measuring head forms a good seal.
Install the measuring head. Secure the measuring head with the eight screws.
Connect the electrical plug.
Test the operation of the detector. For instructions, see Testing and Adjusting, "Performance Tests".Repair for a Leaking Valve Box
191-6505 Oil Mist Detector
Shut OFF the compressed air supply to the detector. Purge the compressed air from the system.
Illustration 9 g00738556
Disconnect suction lines (1). Move the suction lines away from the detector in order to access cover (2) of the valve box. Discard the seals for the fittings of the suction lines. Obtain new seals for reassembly.
Illustration 10 g00738577
Loosen bolts (3) and (4) in order to remove cover (2) from the valve box. Remove the cover and remove the gasket for the cover. Discard the gasket. Obtain a new gasket for reassembly.
Personal injury can result from air pressure.Personal injury can result without following proper procedure. When using pressure air, wear