SEAL-WIPER 4328521 - Caterpillar

Illustration 39 g02725061
Typical Slug Valve (18) Shown in SET Position
Once all restrictions are corrected, reset slug valve (18) by moving lever from "TRIPPED" position to "SET" position.Note: If slug valve (18) will not reset, or immediately closes again, refer to the ""Troubleshooting Section"" in this manual, or contact your local Cat dealer for assistance.
Slug valve is factory set to 172 kPa (25.0 psi) differential pressure. Do NOT adjust factory setting. Changing the setting can result in improper fuel filtration and damage to bulk fuel filtration system components.
Note: To ensure fuel quality, have fuel cleanliness tested on a regular basis. For more information on fuel quality testing, refer to the latest version of Special Instruction, SEBU6250, "Caterpillar Machine Fluid Recommendations".Service Parts
Illustration 40 g02725064
(24) Typical Pre-Filter Element (25) Typical Coalescer Element (26) Typical Separator Canister
Table 3
Service Parts    
Item     Part No     Description     Qty Req    
(24)     284-0436     Pre-filter Element Kit 1     1    
(25)     284-0437     Coalescer Element Kit 2     1    
(26)     284-0426     Separator Canister 3     5    
-     307-0655     Optional Heater (120 VAC)     1    
-     307-2569     Optional Heater (240 VAC)     1    
1 Includes one pre-filter element and one pre-filter vessel o-ring seal. 2 Includes five coalescer elements and one coalescer vessel o-ring seal. 3 Separator canisters do not require replacement unless damaged or corroded.    
Troubleshooting
Table 4
Troubleshooting    
Problem     Possible Cause     Possible Solution    
No fuel flow.     Inlet or outlet valve is closed.     Completely open inlet/outlet valve.    
Fuel hose is kinked. Straighten hose and/or provide larger hose.    
Automatic slug valve shutdown. Check differential pressure gauge follower needles for differential pressure reading greater than
172.0 kPa (25.0 psi). The "slug" valve will close if filters are restricted. Change filter elements and reset "slug" valve.    
Check sight glass for high water accumulation. Wait until system purges water or drain water manually. Reset "slug" valve.    
Differential gauge reading greater than
69 kPa (10.0 psi) at start-up.     Air in the system.     Open vent valve at top of pre-filter vessel to release trapped air.    
Differential gauge reading greater than
172.0 kPa (25.0 psi).     Filter elements are restricted.     Replace filter elements and clean vessels. Reset slug valve, if necessary.    Maintenance Record
Replace filters at least every six months. Clean debris from vessels annually, or as needed to maintain cleanliness.
Table 5
284-0415 Bulk Fuel Filtration Group Maintenance Record    
Date     Maintenance Description     Performed By