﻿GET_GEVOMechL2_02_01_01_118 - ANIMATION Screen
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Coalescer: Maintenance for the coalescer is condition-based except for annual eductor tube cleaning. 

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Inspect the coalescer and the eductor tubes. 

3
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Clean the filter element and if necessary, replace the coalescer.

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Coalescer Inspection

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Inspect the hoses for obvious signs of damage, such as crushing, holes, deterioration, and rubbing.

6
00:00:23,875 --> 00:00:27,333
Inspect the canister for damage and holes. 

7
00:00:27,333 --> 00:00:30,458
Replace the coalescer, if necessary.

8
00:00:30,458 --> 00:00:35,917
Check for missing or damaged O-ring seal between coalescer canister halves.

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00:00:35,917 --> 00:00:40,417
Check and ensure that all clamps and hose connections are secure. 

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00:00:40,417 --> 00:00:44,083
Repair, replace, or tighten as necessary.

11
00:00:44,083 --> 00:00:47,417
Check for dirty or clogged filter element.

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00:00:47,417 --> 00:00:51,042
Check for carbon buildup in the eductor tube.

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00:00:51,042 --> 00:00:53,333
Coalescer Hoses Removal

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1. If removing the upper hose, remove the P-clamps and disconnect the steel braided boost hose from the eductor and the tee fitting in the turbocharger casing. 

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If replacing the hose, cut the tie-wraps that connect the steel braided boost hose to the coalescer hose. 

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2. Loosen the 9/16-inch (15-mm) clamp bolts that secure the ends of the upper and lower hoses to their attachment pipes. 

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3. Rotate the ends of the hoses back and forth at the attachment points just enough to break any bonding that may have occurred between the hose and the attachment pipe. 

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4. Pull the free ends of the hoses off the pipes, taking care not to scrape the hoses against other components that may damage them. 

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5. Cover the openings to the coalescer and all ends of the coalescer hoses. 

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Coalescer Hose Installation

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1. Inspect the coalescer hoses for cracks, holes, or other defects, and replace if needed. 

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2. Apply anti-seize compound to the exterior of the attachment pipes. 

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3. Ensure that the clamps are located loosely around the hose cuffs at both ends of the hoses, and then install the hose ends over the attachment pipes. 

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4. Rotate the clamps around the hoses such that the bolt is in a convenient position for adjustment. 

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5. Position the hoses so that they will not make contact with the engine or other engine components, then torque each 9/16-inch (15-mm) clamp bolt. 

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6. When installing the upper coalescer hose, perform the following additional steps: 

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a. Attach the P-clamps to the upper coalescer hose. 

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Ensure that the P-clamp bolts are torqued so that the hose does not get twisted or damaged. 

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b. Connect the steel braided boost hose to the eductor and the tee fitting in the turbocharger casing. 

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c. Install the tie-wraps and spacer blocks. 

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d. Ensure that the spacer block located opposite the steel braided boost hose on the lowest tie-wrap is in contact with the turbo case to prevent premature coalescer hose failure. 

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Coalescer Removal

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00:03:04,833 --> 00:03:07,208
1. Remove the coalescer hoses. 

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2. Disconnect the coalescer drain line. 

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3. Support the coalescer to prevent it from falling. 

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4. Remove the retaining strap bolts from the retaining straps. 

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5. Remove the coalescer from its installed position. 

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Coalescer Installation

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1. Inspect the coalescer for cracks or defects, replace if needed. 

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2. Position the coalescer in its mounting bracket on the IFE cover such that the inlet hose attachment is parallel to the front of the IFE cover. 

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3. With the coalescer held in place, position the retaining straps around the coalescer, replace the retaining strap bolts, and torque the retaining strap bolts. 

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4. Connect the coalescer drain line. 

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5. Re-attach all coalescer hoses.
