Cummins ism valve adjustment sequence. Read and follow all safety instructions.

Cummins ism valve adjustment sequence Feb 26, 2025 · The Cummins ISM, ISMe, and QSM11 engines are widely used in heavy-duty trucks, industrial equipment, marine applications, and power generation units. Dec 11, 2010 · The valve train is designed such that adjustment of the valve lash is not required for normal service during the first 241,402 km [150,000 mi]. Valve Lash Setting Cummins ISM 420 440 Mustafa Darcan 466 subscribers Subscribed The document provides tightening torque specifications in Newton-meters (Nm) and pound-feet (lb. 7. Overview of inner base circle method and outer base circle method of valve and injector adjustment. 9L and 6. Rotate engine until valve overlap is reached on cylinder #6. 5 14 For a Cummins M11 tune-up, start by checking injector timing using a dial indicator on the camshaft. doc / . more Audio tracks for some languages were automatically generated. To bar the engine, remove the oil filter tube and use a 3/4 inch drive breaker bar with extension to rotate the engine. Nov 9, 2010 · The preferred method of performing normal valve and step timing control (STC) injector overhead adjustment is to use the outer base circle (OBC) method, where the crush of the injector plunger to cup is set by tightening the injector rocker lever adjusting screw to a prescribed torque. It outlines 9 steps for the process, which include disconnecting the battery, removing the cylinder head cover, rotating the crankshaft to position for measurement, checking valve lash using a feeler gauge against specified limits, adjusting rocker arms if needed, rechecking lash DODGE CUMMINS 5. My valve lash were out of adjustment a bit at 92K miles. 5, Engine QSB 5. Jan 22, 2013 · When reassembling the rocker arm assembly on a Cummins ISM 305V, ensure all components are clean and properly lubricated. How To Adjust Valves On Cummins Ism. Adjustment may have moved when torquing the spherical nut. 015" Min. View all posts by Jack Jan 18, 2018 · Ok need a little help with this one. How to set Injectors and Valves on a Twin Cam Cummins ISX Engine. Valve lash should be adjusted at 24,000 mile intervals on all 12v Cummins engines in order to compensate for valvetrain wear. It is virtually the same on a B C or L model. #cumminsm11 #cumminsoverhead #m11celectplus We run the overhead on an L10 Cummins with PT(D) top stop injectors. 152- to 0. Both the valve and injector get set at the same time on the correct letter. Inspect exhaust valve lash on cylinders 2, 4, and 6. You will need to rotate the engine 2 times to complete the adjustment of the overhead. Valve, injector, and engine brake adjustment must be performed using the values listed in this section. I write about how to fix and improve diesel engines, from cars to trucks to generators. Intake 1,2,4 Exhaust 1,3,5 Rotate engine until Aug 29, 2017 · Always adjust the valves after the injector adjustment. Follow valve lash adjustment sequence: loosen rocker nut, rotate engine to TDC compression stroke, then tighten nut to specified lash clearance. Repeat the process to adjust all injectors and valves correctly. I had posted a couple weeks ago that i was going to adjust the valve on our 500 ism and just spent 3 days doing it. ? Microsoft Word - 6C T&S. When barring over the engine, keep your fingers on both #6 I & E valves. The procedure involves bottoming out the injector plunger, then backing out the adjusting screw 120 degrees and tightening For further details and discussion of DEF for Cummins engines, refer to Diesel Exhaust Fluid Specifications for Cummins Selective Catalytic Reduction Systems, bulletin 4021566. Refer to Overview of Inner Base circle method and Outer Base circle method of valve and injector adjustment. SMALL | MEDIUM | LARGE Next Preparatory Steps TOC Remove the EGR crossover tube. Incorrect settings can 003-004 Overhead Set - Free download as PDF File (. 𝙏𝙞𝙜𝙝𝙩𝙚𝙣𝙞𝙣𝙜 𝙩𝙤𝙧𝙦𝙪𝙚, 𝙏𝙞𝙜𝙝𝙩𝙚𝙣𝙞𝙣𝙜 𝙨𝙚𝙦𝙪𝙚𝙣𝙘𝙚 Feb 15, 2018 · Jump to page : 1 Now viewing page 1 [50 messages per page] This document describes the procedure for calibrating Cummins engine valves and injectors. CONSULT YOUR LOCAL CUMMINS DISTRIBUTOR OR DEALER TO VERIFY YOUR ENGINE CPL IS AN N14 PLUS ENGINE. Feb 7, 2016 · Valve Lash Adjustment For Cummins Valve lash adjustment is suggested to be done at 150K miles which I think is too far down the road. Valve Adjustment Procedure Overlap Method: 1. Feb 15, 2018 · Search this forum Printer friendly version E-mail a link to this thread Valve and inj sequence for isx cummins/your welcome, I forgot the valve adjustment Select a feeler gauge for the correct valve lash specification. Set to mark B to adjust cylinder 2 or 5. Loosen the locknut on the crosshead adjusting screw. 5 N-m). The steps include removing the valve cover, using a barring gear to locate top dead center of cylinder 1, and checking/adjusting the intake and The valve lash is not correct when a thicker feeler gauge will fit. The Cummins ISM does have a maximum RV output of 500hp and May 27, 2021 · Setting injectors is only on the earlier Isx, isn't it? You just set valve lash and brakes on cm2250 and cm2350, is my understanding. It includes instructions for inspecting, cleaning, and reassembling components, emphasizing the importance of maintaining proper orientation and lubrication during installation. Multiple tightening steps are Below is the injector set and sequence to adjust. Feb 26, 2025 · The cylinder head of the Cummins ISM, ISMe, and QSM11 engines plays a critical role in combustion efficiency, air-fuel mixture control, and engine cooling. Use a calibrated torque wrench set to manufacturer specs (usually around 30-40 ft-lbs). Specifications are given for engines ranging from 3. docx), PDF File (. Valve adjustment on the Cummins ISL 2007 involves checking and setting valve lash to manufacturer specs. Tightening torque specifications are given for fasteners. Install the valve/brake rocker level assemblies onto the cylinder head. 381-mm [0. Cummins M11 valve adjustment NV CTE Diesel Technology 144 subscribers Subscribed Sep 20, 2014 · I wanted to adjust the valves on my 2006 which has 118K. Check out Travis doing this overhead valve adjustment on an ISX Cummins. 69 NOM 0. It describes adjusting the injectors when the engine is at 45 degrees before top dead center by applying the correct preload to the injector timing plunger. Check valve lash using a feeler gauge and adjust rocker arms to manufacturer specs. 015- to 0. Refer to Section i Introduction for instructions ‘on how to use this manual. If the engine is equipped with an air compressor: Remove the oil fill connector from the lower gear case Oct 24, 2022 · Valves, injectors, and engine brakes must be correctly adjusted for the engine to operate efficiently. Aug 28, 2022 · Table of Contents General Information Preparatory Steps Measure Adjust Valves Finishing Steps General Information TOC All overhead lash measurements must be made when the engine is cold ( stabilized coolant temperature must be at 60°C [140°F] or below). Atleast that is how I read it. Valve lash adjustment is fairly simple to do an This document provides instructions for adjusting the valve lash on a 2003-2007 Cummins 5. I need to adjust my valves and injectors on a 99 International 8100 with the Cummins M11 Celect Plus engine. Turn the adjusting screw out at least one turn. 015 inches, exhaust 0. Regularly inspect injectors for How to adjust the valve lash on a 5. . 9L diesel engine. Feb 28, 2021 · The valve lash is not correct when a thicker feeler gauge will fit. but hell Detroit Diesel uses the same method. 7L CYLINDER HEAD INSTALLATION AND VALVE LASH ADJUSTMENT FPE-2019-30 May 13, 2007 · Its possible, but it isn't as accurate. Move to the next cylinder as indicated in Table 2–3 and repeat the adjustments until all injectors and valves have been set. 7L diesel engines. . The valve train operates acceptably within the limits of 0. Sep 16, 2018 · 2008 ISM 500 CM876, injector replacementclearance Discussion in ' Trucks [ Eighteen Wheelers ] ' started by wingover, Sep 16, 2018. Apr 10, 2023 · The cylinder head is one of the most critical components in any diesel engine, housing key systems such as the intake and exhaust valves, fuel injectors, and passages for coolant and lubrication. Remove valve covers and rotate the crankshaft to top dead center (TDC) on the compression stroke for each cylinder. 9L 12v Cummins, including the proper valve clearance specs. Let us know what you would like to see next! #diesel #cummins #dieselengine #dieselm The document is a service manual for ISM, ISMe, and QSM11 engines, detailing the preparatory steps and disassembly procedures for rocker arm assemblies. For injectors, tighten hold-down clamps evenly in sequence to prevent leaks. 3 and the valves on cylinder No. Rotate the crankshaft to top dead center (TDC) on cylinder one compression stroke. Symptoms of misadjustment include hard starting, rough idle, or decreased fuel efficiency. pdf) or read online for free. After adjusting the injector on cylinder No. 030" Align mark on pump gear with TDC. It outlines the sequence of adjusting each cylinder's injector and valves with the crankshaft in specific positions. Adjust all the injectors, valves, and brakes (if equipped) to the following injector and valve adjustment sequence chart. The procedure explains Mar 24, 2008 · Unlike the Detroit 2 strokers, the Cummins ISM is a simple engine. Use a feeler gauge to measure valve lash between rocker arms and valve stems. Remove valve covers and use a feeler gauge to measure valve lash per specifications. Slave Piston Lash Adjustment After the intake/exhaust valves and injectors are adjusted, set the slave piston lash (clearance). Read and follow all safety instructions. In Cummins ISC, QSC, ISL, and QSL marine engines, proper maintenance and replacement of cylinder head components are essential to sustaining engine performance, fuel efficiency, and emission control Feb 12, 2025 · The cylinder head and valve train are critical components in the operation of Cummins ISB and QSB engines. NOTE: THE VALVE/BRAKE ROCKER LEVER SHAFTS HAVE A MACHINED FLAT ON THE FRONT END OF THE SHAFT FOR To adjust valves on a Cummins M11, first warm the engine to operating temperature. To ensure this, locate the engine with the piston of cylinder No. The document provides instructions for adjusting valves on an engine at 38,000 km and every 77,000 km thereafter. THE CBRAKE BY JACOBS™ MODEL 455B AND 455C ENGINE BRAKES ARE FOR USE ON CUMMINS N14 PLUS ENGINES ONLY. 381- to 0. g and Repair Manual ISM/QSM11 Series Engines Troubleshootin: G Ls a te? ISfForeword ‘This manual provides instructions for troubleshooting and repairing this engine in the chassis. Adjust by loosening lock nuts and turning adjustment screws until specified clearance is achieved. Although mostly seen in daycab tractors and vocational trucks, the ISM engine can also be found in large motorhomes and fire equipment. Cummins M11 ISM ISMCelect, CelectPlus Setting The Overhead “Running The Rack” #cummins #semi Dos Gringos Ranch 2. It includes the required adjustment values, the cylinder-by-cylinder calibration sequence, and the steps for adjusting the engine valves, injectors, and brakes using the markings on the vibration dampers as a guide. Torque Value: 24 N•m [18 ft-lb] Mark the pulley/vibration damper and rotate the crank-shaft 360 degrees. docxCummins 8. This provides a retarding, or slowing, action to the vehicle’s drive wheels, enabling you to have improved vehicle control Feb 6, 2018 · The document provides instructions for adjusting valves and engine brakes on a Cummins engine. Valve overlap is when both the intake and exhaust valves are opened at the same time. For injector adjustment, loosen injector hold-down clamps, set proper injector protrusion per specs, then retighten. Motorhome Maintenance and Operation X12, ISX12, ISM, M11 Engines (450–525 hp) Adjust the appropriate injector and valves following the Injector and Valve Adjustment Sequence Chart. 015-in] intake valve lash and 0. Installation manual for CBrake by Jacobs™ engine brakes on Cummins ISM/ISM02, M11/M11 PLUS engines. When it comes to installing the injector adjusting screws, what does it mean to bottom out the injector before backing off the nut by 120 degrees? Does that involve turning the screw until the injector spring is completely compressed? Foreword This manual contains complete assembly and rebuild specifications for the external damper model L10 engine and all associated components manufactured by Cummins Engine Company, Inc. Feb 26, 2025 · The assembly of Cummins ISM, ISMe, and QSM11 engines requires precision, attention to detail, and strict adherence to specifications to ensure reliability, durability, and optimal performance. NOTE: REFERENCE ENGINE MANUAL FOR IN-STRUCTION ON SETTING EXHAUST VALVE LASH. 030-in] exhaust valve lash. Start by warming the engine, then remove the valve covers to access rocker arms and valves. You'll learn how to check valve lash, adjust it, and ensure proper engine operation. Apr 9, 2009 · The set marks are A, B, and C: Set to mark A to adjust cylinder 1 or 6. Includes safety, installation, and maintenance. Feb 26, 2025 · Removing a Cummins ISM, ISMe, or QSM11 engine requires a logical sequence of disconnections and lifting maneuvers. 027 Insert the feeler gauge between the top of the cross head and the rocker lever nose pad. Component and assembly rebuild procedures are provided in the engine shop manual. Adjust the appropriate injector and valves following the Injector and Valve Adjustment Sequence Chart. NOTE: Set the injector on the same cylinder before setting valves. If you don't have 125K miles when Cummins recommends a valve adjustment wait till then. 99d16111-fec8-4a80-93d9-a8c46c5c7e2e_ISX_rocker_arm_torque. Proper removal, installation, and servicing of the valves and seats are essential for maintaining optimal performance, fuel efficiency, and longevity. Prior to bolting down a shaft assembly, bar the engine over until the shaft is seated on all 4 pedestals. Mark the damper where the belt lines up For Cummins ISC, torque rocker arms to 30-35 ft-lbs, injectors to 45-50 ft-lbs, rocker housing to 20-25 ft-lbs, and valve cover to 8-10 ft-lbs. Valves Adjustment Cummins B Series - Free download as Word Doc (. Readjust as neces-sary. I cou Adjust the exhaust valve lash on cylinders 2, 4, and 6. Pay attention to reading and you will learn more. 015" Max. The accompanying table gives the adjustment specifications. To adjust valves on the Cummins M11, first warm the engine to operating temperature. To adjust valves on a Cummins ISM 410, first warm the engine to operating temperature. In this video I show the highlights of performing an overhead or valve adjustment on a Cummins ISL 8. Valve adjustment For valve and injector adjustment on the 2004 Cummins ISM, first warm the engine to operating temperature. Mar 22, 2008 · Set when cold. I went to You Tube and there is a video of a guy doing a 2003 which seems pretty straight forward but guess what!!!! The 2006 alternator doesnt have a 24mm bolt you can put a socket on to turn the crank to get to TDC. Adjust General Information Valves, injectors, and engine brakes must be correctly adjusted for the engine to operate efficiently. 015–0. Refer to Procedure 011-070 in Section Finish Installation Adjust the intake valves, exhaust valves and injectors in accordance with Cummins procedures. So this is how I did my valve lash adjustment on my truck. 014 Exhaust 0. 3l C Series Engines This Cummins Service Manual describes the necessary steps for setting the overhead on your Engine ISB ISBe, Engine ISB ISBe4, Engine QSB 4. Always recheck clearances after Customer: Hi, I'm in the process of installing a set of jake brakes on a Cummins ISM with a specific serial number and CPL. When activated, the engine brake alters the operation of the engine’s exhaust valves so that the engine works as a power-absorbing air compressor. I adjusted only the intake and exhaust Jun 2, 2021 · The M11 and ISM we have are electronic book has you adjusting valves and injectors on same cylinder which leads me to believe is OBC. Make sure the feeler gauge is completely under the pivoting rocker lever nose pad This video show how to adjust the valves on a ISC Cummins engine. Excessive smoke and no-start symptoms often indicate incorrect injector timing or faulty injectors. Refer to Procedure 019-031 in the Troubleshooting and Repair Manual, Came Electronic Control System, ISM Engines, Bulletin 4021381 or Troubleshooting and Repair Manual, Electronic Control System, ISM and Gismo Series Engines, Bulletin 3666266. pdf - Free download as PDF File (. Has anyone on here Cummins m11 celect/ celect plus overhead valve adjustment. 006" Max. Check the valve rocker levers on cylinder number 1 to see if both valves are closed. As compared to the 2 strokers that have different cam advances or retardings, injector height, rake adjustment, various mechanical injectors that can be used, etc. 56K subscribers Subscribe Every 100k miles or so you will want to perform a Cummins valve adjustment procedure. 1, rotate the accessory drive; and align the next valve set mark with the pointer. Proper operation and maintenance require a thorough understanding of engine specifications, including torque values, tolerances, and fluid specifications. Aug 11, 2010 · The local Cummins shop I went to recommends the first valve adjustment at 50k miles and then again after another 200k miles. It helps pay for the $790/month internet bill that the forum consumes. 020 inches. 762-mm [0. Nov 26, 2014 · Engine Identification Prior to engine brake installation, verif ISM, 2002 ISM, 2007 ISM, M11 or M11 Plus. Follow these structured steps for safe and efficient removal. valve lash Exhaust . Pull valve cover. ft) for main bearing bolts, connecting rod bolts, and cylinder head bolts on various Cummins diesel engines. Valve overlap occurs for about 15° of crankshaft rotation. This document provides instructions for adjusting the injectors on Cummins CELECT and CELECT Plus engines from 1990 to 2001. Tighten the lock nut and measure the valve lash again. Pull front breather off the front cover. Lift cover and slide to the passenger side and pull to front. To adjust valve clearance on the M11 ISM engine, first bring the engine to top dead center (TDC) on the compression stroke. They told me that the first adjustment is most important and is what they recommend in all their literature for commercial engine sales. It lists the companion cylinders that can be adjusted at each accessory drive position and provides the method for Dec 6, 2015 · Do my own valve adjustment on Cummins M11 Discussion in ' Ask An Owner Operator ' started by giannid, Dec 7, 2015. IT MAY BE MORE CONVENIENT TO INSTALL THE PUSH RODS UNDER THE ROCKER LEVERS OF THE CYLINDERS TO BE ADJUSTED FOLLOWING THE VALVE AND INJECTOR ADJUSTMENT SEQUENCE. Proper torque values, sequence procedures, and cleanliness are essential for avoiding premature wear, oil leaks, or mechanical failure. If you are interested in learning more about diesel engines, check out my blog and leave your feedback. For injector setup, ensure proper injector timing using a dial indicator and follow Cummins guidelines for injector shim thickness. It details the process of using feeler gauges to set valve and brake lash values while rotating the engine to the specified cylinder positions marked on the damper. For injector adjustment, loosen injector hold-down clamps, rotate injectors to achieve proper timing, then retighten clamps. Can you provide the sequence for adjusting the valves and injectors? What is the degree of adjustment for the injectors? What is the feeler gauge setting for the Jake brake? For the ISM Cummins, torque rocker assembly bolts in a specified sequence to ensure even pressure—typically starting from the center and moving outward. This manual is intended as a quick reference guide for an experienced technician who is familiar with our product. Cummins qsx15 We would like to show you a description here but the site won’t allow us. 010–0. I always adjust the valves on them with the Cummins 6 inch pound torque wrench method. 1 and the valves on cylinder No. Two complete revolutions are required to set all valves, engine brakes, and injectors. 2 SEQUENCE OF Mechanic's Assistant chat Customer: I require the torque specifications for the cylinder head, injector, and holder bolt, as well as for the rocker and Jake brake. Measure and adjust at TDC. The Jacobs Engine Brake is a diesel engine retarder that uses the engine to aid in slowing and controlling the vehicle. 1 day ago · I want to personally thank everyone who has donated to the forum recently. 9L & 6. Use a feeler gauge to measure the gap between the rocker arm and valve stem; adjust to manufacturer specs. Min. Re-tighten lock Torque and Rebuild Specifications for Cummins Four and Six Cylinder B Series Engines in Industrial and Generator Applications with Front Gear Trains For further details and discussion of DEF for Cummins engines, refer to Diesel Exhaust Fluid Specifications for Cummins Selective Catalytic Reduction Systems, Service Bulletin Number 4021566. The document provides instructions for adjusting the valves and injectors on Cummins CELECT engines, which is done differently than on PT-equipped engines. Valve, injector, and engine brake adjustment must be Dec 1, 2020 · 14 mm wrench, Flatblade Screwdriver Locate Top Dead Center (TDC) for Cylinder Number 1 Check/adjust the valves as indicated in the illustration (I = Intake, E = Exhaust). Lash adjustment must be made when exhaust valves on the cylinder to be adjusted are in the closed position. 1. Valve Lash Specification ; mm in Intake 0. MISAPPLICATION COULD RESULT IN ENGINE AND/OR ENGINE BRAKE DAMAGE. Regularly inspect valve lash and Engine Identification Prior to engine brake installation, verif ISM, 2002 ISM, 2007 ISM, M11 or M11 Plus. Tighten locknut to 25 N•m [20 ft-lb]. Inspect the current valve cover gasket for any damage and if necessary replace the valve cover gasket (2869891). Wait until you feel Exhaust valve coming up and then pay attention to Intake valve and wait for it come down and when they're at the same level, go ahead run the overhead in the #1 TDCC position. pdf), Text File (. 9 liter engine in our 2003 Monaco Dynasty on the Roadmas During an inframe rebuild of the 2004 Cummins ISX, follow precise torque specs: head bolts typically require a three-step sequence ending around 450 ft-lbs. Learn how to set valves and STC injectors on a Cummins M11 engine with step-by-step guidance. The goal is to establish a uniform procedure for performing high-quality calibrations. Proper installation of fire rings is outlined for performance cylinder heads. 1 at TDC (as described on page 3 in Section The Cummins ISM is the alternative engine to the larger ISX for local and long haul applications. This document provides instructions for installing cylinder heads and adjusting valve lash on Cummins 5. REFER TO CUMMINS BULLETINS AND INSTRUCTIONAL LITERATURE FOR SPECIFIC APPLICATION INFORMATION. Install spherical nut onto long lock nut and torque to 40N•m [30 ft-lb]. Regularly How to use a dial indicator and homemade tool to adjust injector lash on a Cummins ISM or late M11 where you must set them at the bottom of the stroke. Crosshead Adjustment Note: Crosshead adjustment should always be made before attempting to adjust the valves. 5 days ago · I want to personally thank everyone who has donated to the forum recently. 5, rotate the accessory drive; and align the next valve set mark with the pointer. I also review the newest models and innovations in the diesel market. Pull all the bolts except rear. valve lash Intake . The engine identification is on the serial number plate located on the fuel pump side below the rocker cover. Apr 10, 2016 · Spent 3 days doing a valve adjustment on our 04 Essex with a 500 ISM. You will notice that as the exhaust valve is closing the intake valve starts to open. Adjusting the proper clearances to the valves, injectors and Jake brakes is about all that is required. It describes installing new head gaskets and cylinder heads, torquing head bolts, installing rocker assemblies, and adjusting valve lash within specified limits. Oct 18, 2019 · This post is mainly written to introduce how to adjust crosshead, injector and valves of Cummins NT diesel engines correctly. Project $10k fld gets the valves adjusted. Follow the injector adjustment sequence precisely to maintain optimal fuel delivery timing. The cylinder head houses key parts like the intake and exhaust valves, valve springs, rocker arms, and fuel injectors. Isx 15 valve adjustment - Free download as PDF File (. For the 2006 Cummins ISM 410, injector adjustment requires precise torque—typically 6 in-lbs—to ensure proper seating. Connect the solenoid power and ground wires to the solenoid terminals and tighten to 15 lb-in (1. Adjust injector timing to factory specs to ensure proper fuel delivery. - Thank you again. Various accessory and component suppliers can be contacted directly for any information Engine M11 & M11 Plus ISM 1998 - 001 ISM 00 - 006 ISM 007 - Present Refer to cummins service information and instructional literature for specific application information. But instead of just setting lash so it feels right with feeler gauge the manual says to insert proper feeler gauge and tighten adjuster screw down to 5 inch lbs and lock then remove feeler. Next, measure valve lash with a feeler gauge when the engine is cold; typical intake lash is 0. 006- to 0. Set valve lash by rotating the engine to the correct TDC position for each cylinder, then adjust rocker arms to specified clearances using a feeler gauge. Incorrect lash causes noise and power loss. 9 liters to 50 liters, including models like the 4BT, 6BT, ISB, ISC, ISM, ISX, KTA, KT, L10, M11, and QSK. In this short video I'll show you the specifics of performing this lash Oct 22, 2022 · Swivel-Foot Rocker Lever Design FeaturesHello, I'm Jack, a diesel engine fan and a blogger. Use a feeler gauge to measure valve lash and adjust rocker arms accordingly. 9, Engine QSB 6. Feb 28, 2021 · Adjust the appropriate injector and valves following the Injector and Valve Adjustment Sequence Chart. txt) or read online for free. Adjust rocker arms using the overhead method by setting valve lash with the engine at TDC on the compression stroke. 36 NOM 0. Set to mark C to adjust cylinder 3 or 4. For Cummins ISC, torque rocker arms to 30-35 ft-lbs, injectors to 45-50 ft-lbs, rocker housing to 20-25 ft-lbs, and valve cover to 8-10 ft-lbs. atqcycm uji pdofmd ipbth mxy sbiqz eaww hxbarj taj znbgmg nroptk lcek whef ekwsh sesprj