﻿GET_GEVOMechL2_03_01_01_128 - ANIMATION Screen
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Running Maintenance for the Automatic Water Drain Valve Actuating Portion

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When replacing the automatic water drain valve cartridge and the associated hex nut, ensure that the color of the installed automatic water drain valve cartridge handle and hex nut stripe match the color code for the year.

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If the entire flanged valve body with the tee fitting is to be removed from the piping, the engine cooling water system must be drained.

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Automatic Water Drain Valve Actuating Portion Removal and Testing

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1. Carefully loosen and remove the hex body and cartridge from the pipe tee, using a 1-7/8-inch wrench.

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2. With the hex body and cartridge removed, the functionality of the actuating portion may be tested, if desired, as follows:

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a. Intermittently spray canned coolant (available from Therm–O–Tech, Part Number MS–242N) onto the brass sensor at the cartridge tip, keeping a layer of frost on the metal surface.

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b. Reinstall the cartridge in the hex body after reheating to above 40 °F (4.4 °C).

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Automatic Water Drain Valve Installation

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1. Chase the internal threads of the pipe tee to remove any rust or debris.

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2. Using an approved low strength thread sealant (Loctite<sup>®</sup> 567), screw the new hex body and cartridge into the leg of the pipe tee.

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3. Tighten the hex body into the pipe tee to a torque value of 80 lb.-ft. (108 Nm).

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Automatic Water Drain Valve Assembly Replacement

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1. Drain the locomotive cooling water system.

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2. Remove the two screws, lockwashers, and nuts from each connecting flange and remove the entire automatic water drain valve body from the piping.

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3. Discard the O-ring seals and replace with new O-rings.

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4. Install the replacement water drain valve assembly to the connecting flanges by securing with screws, lockwashers, and nuts.

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Victaulic Coupling Removal

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1. Drain the cooling water system.

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2. Remove the bolts and nuts that hold the coupling halves together and remove the coupling.

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3. Slide the gaskets onto the removable pipe, then remove the pipe to allow gasket removal.

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4. Remove the gaskets from the pipe.

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5. Protect the pipe ends after disassembly.

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Victaulic Coupling Installation

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1. Inspect the gaskets.

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2. Inspect the sealing surfaces of the pipe.

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3. Inspect the cleanliness of the pipe and ensure it is clean and free of debris.

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4. Slide both gaskets onto the fixed end of the pipe ensuring that each gasket is flush with the end.

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5. Insert the pipe with one person holding the pipe in position while another person carefully slides the gasket into place.

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6. Install the coupling halves, then install the bolts and nuts ensuring that the oval under each bolt head is mated into the recessed oval in the coupling half.

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7. Tighten the nuts until there is a metal-to-metal contact between the coupling halves.

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8. Check the system for leaks.

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9. Torque the Victaulic coupling bolts to 70-80 lb.-ft. (95-108 Nm).

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10. Ensure that the Victaulic couplings are pointed out, mounted horizontally with respect to the split line of the coupling.
