1lw cat engine problems. We replaced all the injectors already.
1lw cat engine problems Chat. If problems are found with the fuel lines, repair the lines and/or replace the lines. The big difference is the electronics between them. 6L Diesel Engine Valve Cover Sticker Decal 1998 manufacture date 1 set includes: - 2 vinyl decals/stickers (1 small decal, 1 large decal) ive got a 1999 3406e have check engine lights coming on 46 ,24 they are low oil pressure but expect something to start . E539 (3) 105-0: High Intake Manifold Air Temperature: The code indicates that the temperature of the intake air into the engine has risen above a predetermined threshold. 8 & C3. Gain insights into attachments and optional equipment, expanding your knowledge base. Install Engine Oil Cooler (Industrial Engine) 1. I’m wondering about going with a marine cam (130-9710) when the time comes. The 3406E was the first 14-15 liter inline engine to break the 500HP barrier once the 550HP ratings came out, placing Cat as the leader of the Horsepower war during the mid to late 90's. Convenient service ORDINARY PROBLEMS, EXTRAORDINARY SOLUTIONS Report a problem with an order We take intellectual property concerns very seriously, but many of these CAT 3406 1LW 14. Those engines have the stronger pistons and a C15 has to be factory rated at 435 or greater to handle bigger turbos and ECM flashes. Lots of people running his heads. replaced turbo, check air to air. I have a CAT 3406E ser # is the 1LW. Some engine info: Cat 3306PC, Serial#66D200xx, Arrangement#6N3323I. replaced fuel pump. Used 1999 CAT 3406E Complete Engine for sale in SCRANTON, PA #1007. Manual and Guide Full List. It had a sputter. replaced primary filter to fuel transfer pump line cus it was Available for: 1994-2004 CAT 3406E, C15, C16 Engines Free Standard ground shipping within the Continental US! If you need your parts in a hurry and would like to get them overnighted or expedites please give us a call and our sales reps will let you know what options are available! 1LW 1MM 4AS 5DS RWS 2WS 5EK 6TS 281-8261 106-1792 106-1793 2N-2765 165-3929 391-2167 9S-8752 5M-2894 Cat Reman engines and genuine Cat parts provide the quality you expect, at competitive prices. I rebuilt it then If there are no fuel supply related problems and that's confirmed as well as any of the other things I have mentioned, Hi I need some help I just bought a truck with cat c15 engine freightliner century and my mph is 5. I got a used ECM for my 1lw from the salvage yard as I was trying to diagnose a problem I was having. Boots & Hanks of Scranton, PA CAT 3406E 1LW ENGINE Boots & Hanks Truck Parts. Caterpillar 3406 ECM 1LW . Need help overhaul 1LW cat Ole Skool, Mar 12, 2021. The engine has the mid mount breather on the side of the block, I'm just wondering if that is the problem and I should Install a 6nz valve cover with the built in breather. Two wires per terminal. It would allow the fuel to run back into the fuel tank cause it to have air in the fuel line. The injectors are the same reman number for the first 6NZ and last of the1LW, 0R-9257. com. I really like them ,too. The pistons are the same compression ratio and same part number on the crown for the last of the 1LW and all of the 6NZ. 2005 250 Super Duty Crew. When the adjustment of the valve lash needs to be done several times in a short period of time, it can be an indication of wear in a different part of the engine. pdf), Text File (. txt) or view presentation slides online. A Cat factory reman I have a 1LW cat. You need to back date to an earlier file. The C15 was made to improve on the 3406E. In this case, we will process a partial refund for the difference. 3. Caterpillar is one of the world’s largest manufacturers of diesel engines and construction and mining equipment. hi guys, can anyone tell me what is fuel pressure for cat 3406E on- highway engines?. i think a replace is the best fix . Download now for instant access to this Cat had its set of problems with this new engines. Top AR/CPL #: 1LW. The factory guide will help you quickly and easily learn all the instructions, recommendations, rules and Hi . As such, it is not acceptable whatsoever to publish any software that is bound by any legal restriction. 5. 0 engine crankshaft pulley. 001 lift on injector lobe, but I bet shape and rise of injector ramp is different and duration and lobe separation angle could be different on intake and exhaust. 5DS. CAT C9- This inline 6-cylinder engine started out as an 8. We rarely see those later 3406E models, in the shop (2WS, 1LW, 6TS prefixes) IH-Harvester: Posted 8/27/2011 13:10 (#1932807 - in reply to #1931732) Crankcase breather on 2006 Cat C9 engine: Stonehands: Caterpillar Engine Forum: 24: 06-18-2020 05:46 AM: Check Engine Light Cat engine on Itasca 39 foot 2002 75,000 miles: bruce Dixon: Caterpillar Engine Forum: 20: 08-14-2018 10:18 PM: 2006 Excursion Cat Engine Issues: browntom: MH-General Discussions & Problems: 3: 01-27-2015 11:22 AM . Cat 3406E I have taken wiring diagrams from both the 70 p & 40 pin, removing for example pin 70 from the 70pin putting into cavity 6 of a 40 pin connector, pin 52 & 53 (spliced together) into #4 unswitched power, #65 &67 into #5 ground, etc but I have ran into a problem. 1999 CAT 3406E Description. 8, C2. PACCAR Engine Analyzer v1. any You can rebuild CAT engines, especially the earlier ones, pretty well forever. I'm having an issue with this engine misfiring but only at high speed when it has a load on it. Replaced my original 1999 1LW 3406e in a KW which The contents of this forum are for experimental & educational purposes only. A few have had problems but Robert has bent over backwards for most to fix any issues. what is fuel rate at specified rpm?. Refer to Operation and Maintenance Manual, “Engine Oil” for the recommendations of engine oil. OregonDS. It has the Cat display on the dash. 6. Caterpillar’s success continued through the 20th century with a focus on diesel engines and construction equipment. Discover everything you need to know about the CAT 3406E Truck This diagram is an essential tool for anyone working with Cat C15 engines and helps to ensure efficient and reliable fuel delivery to the engine. It shows 220K miles. CAT should have records of this being done. Cat 3406e Engine Assembly on HeavyTruckParts. Read less Hi all, Assuming all goes well tomorrow, I'm buying a truck that has a Caterpillar 3406E in it. Put oil cooler in position on the oil filter base and install the bolts that hold it. The isx is so much simpler in design, but has its problems as well. Got a new compressor. subtex, Jan 30, 2019. I need some experienced guidance before I spend more money. Install Production ran till 1998 at which point it was succeeded by the C-15 starting with the 6NZ serial prefix engines. The company currently sells its products in 180 different countries and caters to over 27 different industries. I did lick it. It’s set at 550 hp, no modifications have been done to it to my knowledge. 8L and 5DS 15. Engine starts and runs however cylinders 1,2,3 appear to not be firing when. The issue I'm having is its blowing a little bit of oil out the breather if it gets worked hard. 2. Cause this engine ran so good originally then changed after a month or so of running it. I have a 07 379 peterbilt with Isx we are doing a engine swap to a 5EK cat do we need to get a new harness from cab to. Thermo-King repair and trouble shooting. Net. The ECM detects the following conditions: CAT Engine Reprogramming Tool for flash programming C1. I have a 3406E in a ‘97 Peterbilt that will need a cam this summer-it’s starting to flake. The truck has 440,000 miles on it. Anything in particular I should look out for? The shop is supposed to ensure that either no engine password is set or, if there is one, tell me what it is. If you have 58's/8502 in it, have you tried the 170-8132 5EK 550/1850 file. Problem I have is when the fan is supposed to kick on I get a low water warning light instead. I'm unsure of the history on it but I'll try and give as much info as possible. 2WS. If the engine isn't hydrualic locked with a cylinder full of coolant, I'd say the o-rings. It is a good workhorse motor but its weakness is the pressure it puts on the oil pumps. 1LW. The engine prices are outright with no core engine needed in return. The included publications are written specifically for the (FRESH REBUILD) 1997 Caterpillar 3406E Diesel Engine with Jakes Brakes (40PIN), Built to 550HP, Serial # 1LW19251, 14. Note: This Special Instruction should only be used for 3406E Engines. Supposed to have around 500K on a platinum rebuild. good luck with the rebuild Lots of people running his heads. If the symptom is corrected, return the unit to service. Call 888-642-6460. After the 1LW, Cat quickly out it back on the top. We had one that was a new truck with a cat motor in it that would start then sputter and die. The 129-6628 Speed/Timing Sensor is Need to enable j1939 on a cat 1LW 3406 E engine, when turned on with cat ET tool keeps reverting back to none or J1922 By chatting and providing personal info, you 34 years experiance as engine rebuild and problems. Hi sir I have 1999 Peterblt highway truck cat c15 engine problem is makes air pressure in fuel filter truck don't start without spray and full of fuel both 287 satisfied customers. I have a 3406e 1LW engine. A plugged crankcase breather will cause excessive crankcase Hi , I have a 98 Pete 379 long hood with a cat 3406E 1LW with. The truck is a 1999 Peterbilt 378 with a 3406E engine. Install the four bolts that hold the oil cooler to the bonnet. First I would verify the Just something to think about high horsepower like you are talking about, decreases engine life. Oil viscosity: Result: The oil viscosity is not correct. 6TS : CATERPILLAR 3406E: CASTING NUMBERS: CAMSHAFT. But my opinion of building a engine of non stock hp would be. The Caterpillar C15 engine is known to be a good and reliable engine. Water in the oil after sitting awhile is a problem, he either has liner pitting or the lower o-rings on the liners are leaking, it will need a rebuild. Technician: Cat Man. It has a sputter/ miss problem now. Find the problem and make any necessary repairs to prevent more damage to the engine. I have a cat engine problem. I should add that this engine sat around for several years but was started occasionally. Had a long block Log in or Sign up. If you come across a 5EK or 6TS 475Hp/1750torque or higher Hp rated engine than The Acert crank won't work to build a true 5DS 600 engine. 5EK When you need parts for your Caterpillar engine, look no further than Interstate-McBee. Follow the troubleshooting procedure in order to identify the root cause of the problem. Car Specialist. I do know that the 3406E 475 and the 3406E 550 are the exact same engines, only the ECM is flashed different. 1LW cat overhaul Discussion in 'Heavy First I am not a Cat guy. I am repinning the OEM harness was a 70 pin to a 40 pin. Mechanic's Assistant chat. The truck runs great with no issues, Just wondering now if I should changed the fuel pump to get more pressure, But what more will I gain if I did ? I remember a guru telling me if I was ever to When it comes to troubleshooting wiring issues in a Caterpillar 3406e engine, there are a few common problems that can arise. Long story short, put on the ECM and the engine fired up idled real nice, but thought it sounded to quiet with no rattle at all. Torque spec for 97 mitsubishi montero sport ls 3. One of the key 1999 kenworth W900l has a 3406E Cat 475 hp was idleing and died. ARP studs, EGR Delete, and SCT from Vivian. Not enough valve lash, if not corrected, can be the cause of rapid wear of the camshaft and lifters. The reason is the rod bearing journal must match the Acert 4 bolt rod. I am ASE Master Truck Certified. 8 manuals are included in the downloadable set which covers specifications, operation and maintenance, overhaul, testing and adjusting, troubleshooting, wiring diagram, and much more for the engine and supporting systems. 6 The Engine Control Module (ECM) detects the following conditions: The Engine Control CAT 3406E (Prefix 5DS or 1LW) Fault Code: 24 PID: 100 SPN: FMI: If you don’t generate the code, there could be a problem with high crankcase pressure or a wiring problem with the sensor. Took truck at local KW. I have a sensor with two terminals on it. Otherwise they are basically the same engine as the earlier 40 pin 1LW 14. But this will create problems if the This is a known problem on 1LW engines that have the side mounted breather. Engine Model Model Year Serial Number Horsepower Range Cat Reman Engine Part Number Cat Reman Engine with New Content Part Number 3406E 1994-1997 5EK 435-550 0R-8700 20R-9319 1997 6TS 1998 1LW 10R-7248 20R-9318 1999 2WS 20R-6605 C-15 2000-2002 6NZ 435-550 10R-1322 20R-9323 I just had a 1LW come in last weak with intermittant throttle response,sometimes it was fine and might run 1000 miles without issues then it would not even start or die the next time,then suddenle would not start at all! ended up finding that the cam gear had broken and was missing about 10 teeth where the engine speed sensor pick up was,replaced gear with HD Kits. Has code 46. Important note: The Caterpillar 3406 ECM 1LW module is a vital component of If a problem is suspected with the throttle, refer to Troubleshooting, “Speed Control – Test”. Air Inlet and Exhaust System . 8L engines The main difference between these engines is Cat changed the gasket sealing of the oil pan, Electric problems Master of trouble posted Jan 11, 2025 at 11:48 AM. You are correct. offer Piston-Less Caterpillar 3406 E Engine Rebuild Kit Serial # prefix 5EK, 6TS, 1LW, 5DS, 2WS at Discounted rates, Free Shipping. Replace the engine oil. It has a 1LW engine 475hp, 13 speed, 3. By chatting and providing personal info, you understand and 34 years experiance as engine rebuild and problems. what should me fuel rate as we go to injector cutout section ? . I’d like to ask cat man. Home / Caterpillar Service Manuals / Cat 3406E (1LW, 5DS, 6TS & 5EK) / Caterpillar 3406E Disassembly & Assembly Manual 1LW/5DS Cat 3406E (1LW, 5DS, 6TS & 5EK) Caterpillar 3406E Disassembly & Assembly Manual 1LW/5DS Engine: Caterpillar 3406E. I pulled the records on the truck from Freightliner and it show that a new ECM was installed under warranty at 210K so all is good. It will run on ether but that's it. The Cat C15 fuel line Caterpillar 3406e 2ws six cylinder turbo diesel engine in russell, ks 3406e caterpillar 1lw engine rebuilt 1998 475hp sale engines Peterbilt horsepower 1998 caterpillar rebuilt 3406e- 1lw. Now I had static checked the cam timing twice before throughout ( such as CAT's cam gear backlash C. Engines: 3406E (S/N: 5EK; 9NN; 6BR; 9WR; 4AS; 5DS; 6TS; 1LW) Introduction This Special Instruction provides instructions for the installation of the 129-6628 Speed/Timing Sensor on 3406E Engines. Now will not start. It was a bad idea for Cat to out it there. EPA Tier: N/A. Cat also left an instruction sheet on how to refill the system to ensure no air I have a 3406b and a C-15 Acert and both of those engines have a external weep holes. actually i have turbo boost issue. When the engine is not running, “Turbocharger Outlet (Boost) Pressure” should be 0 kPa (0 psi). 3 in 2007. Engine power may be derated. The base engine in all (3) configurations are complete with turbo group, ECM, jake brakes, air compressor, thermostats, fuel pump, fuel transfer pump, water pump and oil cooler. 4, C3. We have a couple trucks with this in them and we have had the same problem. 34,547 Satisfied Customers. Start it, same problem. 8 liter but was changed to 9. Compatible across Windows and Mac platforms, this manual offers unlimited printing capabilities. While its nice to do 65 mph up an 8% grade without dropping a gear you won't get the same life out of a high horsepower engine. REBUILT Rebuilt 3406E Long Block Engine Assembly. Is this the sensor that operates these two things or do I need to look somewhere else? It is Original downloadable 7 volume service manual set contains complete specifications, systems operation information, disassembly and assembly procedures, testing and adjusting instructions and troubleshooting steps for the Cat 3406E 1LW diesel engine. Right after overhaul i noticed blowby from breather hose and oil fill plug. Skip to content. IMO: CAT started machining expansion cuts, between cylinders, on the cylinder head "bottom deck" of a C-15 engine, thus the gasket lost some clamping force in those areas(in-between-cylinders/liners) But I'll take a C-15(6NZ) anyday, and If you don't mind some oil seepage, than the 3406E "1LW" and "2WS" prefixes have been really good. 1999 CATERPILLAR 3406E SERIAL We supply a Caterpillar 3406E Factory Reman Engine available in 6TS, 1LW or 2WS configuration. I have a e model cat with a serial #1lw19550 and I would. 150 Satisfied Customers. 0. Diagram of components 3176C and 3196 Engines Typical engine views (1) Engine oil pressure sensor (2) Primary engine speed/timing sensor (3) Cat ID; D330; Delco 27SI; EL-740; Engine News; Programming; Service Magazine; Special Instruction; Troubleshooting; Uncategorized; Recent Posts. These files will build the rated Hp, but as you are now seeing they take a while to build that power. 6L, Fully Rebuilt!!! Visit JJREBUILDERS for more information on this engine or any other diesel engine you may be looking for. They do have an issue with that. White and Grey. My choice of engines is the 6NZ or 7CZ, becuase the block is strong and the electronics are easy to deal with. It’s a very popular engine for a reason, and they’re a consistent seller for us. You can also install a crank from a 5EK or 6TS in the 1LW block without any problems. The 1LW uses the same camshaft. More CAT Complete Engines for sale at Boots & Hanks Truck Parts. We've replaced the filters, fuel check valve, injectors Needing some help anyone. on any hill, even an easy hill, it will lose power, and as the rpm declined, so its the turbo boost the turbo has no wastegate, and im thinking its a turbo problem what do u guys Fits Most Caterpillar 3406, 3406B, 3406C, 3406E, Early C15 Engines with Serial Prefix: 3ZJ, 4CK, 5KJ, 8PN, 1LW, 1MM, 2WS, 5DS, 5EK, 6TS If you are unsure if this is the correct set for you, please give us a call with your engine serial I need torque specs for damper on 1LW cat Cat engine damper. Customer: Hello, Mechanic's Assistant: The 3406E engine was know to have a problem with cracking head between intakes. Expert. To start from the beginning, the head on this engine was cracked. Find specs, parts, and maintenance tips on our website. Easily find what you need from 2,294,319 parts available. broken cranks and blown head gaskets. That year also saw this engine receive the ACERT system. This ECM Wire Diagram has been prepared to provide full information with illustrations about Cat 3406E Engine 1LW, 5DS. The majority of problems have been associated with the emissions systems. Various work-arounds were made to try and solve this problem, but none were cost-effective or timely. No smoke, no check engine light on, it drives and still pulls loads, has power. These issues can cause a variety of electrical problems, including loss of power, rough idling, or even total engine shutdown. CAT 3406E (Prefix 5DS or 1LW) Fault Code: 31 PID: 84 SPN: FMI: 1 Vehicle Speed loss of signal. Contact Us. Runs great, good power. 136-7329. The engine runs great , no missing , no blowby, ect. I'm dealing with a 1LW that has me goin around in circles. This document provides an ECM wire diagram for a 3406E engine with the following specifications: 1LW, 5DS. Cat Man. CAT - 3406E (Prefix 5DS or 1LW) - Free download as PDF File (. CRANKSHAFT Factory service information for the Cat 3406E engines with serial number prefixes 1LW or 5DS. The new big updates that were doing switching c13 and c15 to heated nozzle ard heads and everything under this program seemed to correct alot of problems. 55 rears. CUSTOMER LOGIN; CAT C16 - this engine shares the same block with the 6NZ but has a longer crank and thinner liners. Explore the power and reliability of the CAT 3406E Truck Engine SN: 1LW. Other trucks:1980 KW Ext hood, 1982 Kenworth Cabover Aerodyne (BJ and the Bear) 2000 On a 96 pete with a 5ek can i swap it to a 1lw with out changing wires in dash i can get the wires from ecm to firewall. From Cylinder kit components to turbochargers, we've got you covered. The only problem you can get is cylinder liner fretting where the liners fret in the block after a lot of hours, That's an early 3406 so it's probably a 5ek or 6ts those use a different block than the later 2ws 1mm 1lw. Matthew. check air to air for restriction . Important note: The Caterpillar 3406 ECM 1LW module is a vital component of CAT Engine Timing Calibration - Free download as PDF File (. CAT only built roughly 400 of the 5DS I don't see the input information for setup my manual switch to control my engine fan manually I try to reflash ecm, any other think and no result to see it my fan work The 1LW is basicaly the same engine as a 6NZ internally. SCRANTON, PA (800) 738-7802 (800) 738-7802. (01-25-2017, 09:22 PM) smokery Wrote: I don't see the input information for setup my manual switch to control my engine fan manually I try to reflash ecm, any other think and no result to see it my fan work automatically with ecm, but i can't start manually from Cab my output #4 is ok thanks for help My cab is KW w900L 2000 without BCM Ok here is whats going on with my 99 3406E 1LW, at 970k miles, i found coolant in oil and truck started to overheat. Home; Contact; 3406 cat engine horsepower – cat 3406e engine problems Contact your local authorized Cat dealer today. Browse Caterpillar 3406E Engines For Sale near you on MyLittleSalesman. If the symptom still exists, proceed to Test This is what I was trying to tell you. Key Components and Functions of the Cat C15 Fuel Line Diagram. Who did the engine work? CAT - 3406E (Prefix 5DS or 1LW) - Free download as PDF File (. We have power to ecm and have replaced several sensors. i have a 99 kw with a cat 3406e, when loaded the turbo boost its around 18-22psi, at 1500 to 1700 rpm it will go to 25psi, on 10th spd no matter the rpm, it will not boost more than 22psi. caterpillar These happen to be the engine I like, mostly because CAT engineers changed the engine block and fixed the oil leak problem at the rear cover/flywheel area. 34,557 Satisfied Customers. It shows the pin connections and color codes for various sensors that connect to the ECM, including the speed/timing sensor, boost pressure sensor, atmospheric Water Pump Weep Hole CAT 3406e 1lw Discussion in 'Heavy It went on to explain that if it leaves a puddle then there is a problem. I have replaced my 3406 E Cat (5EK). Pressure” and “Atmospheric Pressure” for normal operation on Cat ET. 5EK. Call 216-881-0015 or 800-321-4234. txt) or read online for free. 3B + Guide CAT $ 50. We've replaced. Best Values: overhaul manual set. 5 or less with and without a loaded trailer, Only specs Cat gives on cam is actual lift and only difference is of two cams is 0. It had a cracked fuel house on the filter. Here are some of the most common wiring issues and how to troubleshoot them: 1. 00. The engine only seems to do this between 1100 Being that this engine is a early 1LW it only has one engine speed sensor, this is critical. 1145 gen set engine : 2pw : 3054 gen set engine : 4zk : 3054 gen set engine : 3gw : 3056 gen set engine : 7ak : 3056 gen set engine : 5jg : 3114 gen set engine : 6af : 3114 gen set engine : 1nj : 3116 gen set engine : 2sg : 3116 gen set engine : z2a : 3126b petroleum engine : 65p : 3145 gen set engine : 89v : 3145 gen set engine : 66p : 3150 It is Original downloadable 7 volume service manual set contains complete specifications, systems operation information, disassembly and assembly procedures, testing and adjusting instructions and troubleshooting steps for the Cat 3406E 1LW diesel engine. Sold by: Frontier Truck Parts Location: Dorr MI (616)241-2110 Request Info Even the 6NZ had thins done to it that a 1LW didn't for emissions, but the 6NZ also had a lot of mechanical upgrades from the E model, These were to the front drive assembly and how the gasket seals to prevent oil leaks. Forums. Remove engine oil cooler. I recently bought a truck with a 3406E and I called Cat Power several times with serial # prospects. Ole Skool, Mar 12, 2021 #1. I'm doing an inframe on my 1LW 3406E using Cat parts. new oil cooler, new transfer pump, and cat reman turbo. Cat doesn't design these machines for no reason. Think it’s something that has very slowly getting worse. It Its a 5EK but I'm running a 1LW 550 BS file. We got it started found a wiring problem so we got it started. The. 152-7648. We first diagnose the unit; if it’s not repairable or no problems are found, the cost is $200. Rated 0 out of 5. The engine is in a 99 Pete with 825,000 miles on it that I have owned since new and I'd like to get another 250,000 miles to get me to retirement. When the 1LW was uprated in 2006 by the Cat dealer, he uprated with a LOW NOX Software file. We replaced all the injectors already. Hi Cat Man, Iam doing a engine swap with a 3406E CAT. Changed fuel filter and some fuel lines. we had a lot of trouble with our 1LW engines. Find the best priced new and used Caterpillar 3406E Engines by owners and dealers. This document provides a wiring diagram for the ECM of a Cat 3406E diesel engine model 1LW, 5DS. 15,928 Satisfied Customers. Coverage Includes: Camshaft & bearings Thanks again to EVERYONE who has helped me with your knowledge and expertise over the last few years, especially lately! I posted a while back about a misfire immediately after my out of frame overhaul on this 5EK, which turned out to be a timing calibration issue since the engine was entirely disassembled. 3. good luck with the rebuild Check the fuel lines for the following problems: restrictions, collapsed lines and pinched lines. Print Spec. cracked between the fuel and coolant It has a 1LW engine 475hp, 13 speed, 3. Perform the “Automatic Cylinder Cutout Test” on Cat ET. talked to a westernstar dealer and they thought ive been lucky as lots of there 2004 cat engines are already showing signs of chaffing and harness problems . Nich M. Saved 0 My Account Having some issues on a Cat 3406E 6TS with air in the return line to tanks. I had a new timing sensor on the shelf so I through it in as well. Serial Number: 1LW and 5DS. I pulled the records on the truck we had a lot of trouble with our 1LW engines. It is located on the thermostat housing. CCV re-route, and 4" Magnaflow turbo back. Download Caterpillar Service and Repair Manual in downloadable PDF format, featuring detailed illustrations, parts names, and numbers. Fuel system schematic(1) Fuel supply line(2) Electronic unit injectors(3) Fuel gallery(4) Electronic Control Module (ECM)(5) Fuel pressure sensor(6) Fuel tem The contents of this forum are for experimental & educational purposes only. gctc ytlh bds ipxc xipbxlea hknrwsry nqbma oam ewrste ztbetkcg