SENSOR GP-TEMPERATURE 1514500 - Caterpillar

Family Of EnginesReference: Engine News, May 1991, Page 2, "Procedure For Applying 1U8846 Gasket Maker".Description of Change: The flywheel housing gasket has been removed from engines with aluminum flywheel housings. The gasket has been replaced with 1U8846 Gasket Maker. The flywheel housings have also been changed to compensate for the removed gasket. An additional 0.7 mm (.028 in) has been left on the mating face of the flywheel housing in order for the bolt holes in the rear flange of the oil pan to align with the threaded holes in the bottom of the flywheel housing.Adaptable To: Chart A lists the new and former flywheel housings. Chart B identifies when 1U8846 Gasket Maker and the new flywheel housings are in effect. The Reference Article provides complete information of the use of 1U8846 Gasket Maker. 1U8846 Gasket Maker can be use to replace the flywheel housing gasket on engines with former flywheel housings if the oil pan holes which are used with the flywheel housing are modified. Enlarge those oil pan holes to a 12.7 mm (.50 in) diameter. This will prevent possible side loading of the oil pan.
Procedure For Applying 1U8846 Gasket Maker
1. Be sure the contact surfaces of the flywheel housing and the block are clean and free of any foreign material.2. Clean the contact surfaces with 8T9011 or 4C4079 Component Cleaner.3. It is recommended that the 1U8846 Gasket Maker be applied to the contact surface of the flywheel housing. Apply a 1.5 mm (1/16 in) bead of 1U8846 Gasket Maker down the middle of the contact surface and around each bolt hole. This will provide a continuous bead of gasket maker around the contact surface.4. Use a roller, similar to the one shown in the illustration, to spread the 1.5 mm (1/16 in) bead of gasket maker into a thin even thickness over the contact surface.
This roller has a hard plastic roller and is available in discount or wallpaper/paint stores. This specific roller is used for smoothing inside corners when hanging wallpaper. Applying a larger bead of gasket maker is a waste of material. The larger bead will also make it more difficult to spread a thin even layer of gasket maker over the contact surface. Excess gasket maker will be squeezed out of the block to flywheel housing joint when the bolts are tightened.5. Apply 6V1541 Quick Cure Primer ONLY to the contact surface WITHOUT the gasket maker. Allow the primer to dry for approximately one minute.6. Assemble the components and tighten the bolts to the correct torque.