Cat 6nz jake brake lash - one additional turn.

 
76 . . Cat 6nz jake brake lash

Contains no lash adjusting screws P20520 NA NA. I don&39;t think there is any difference in the braking force of these two models. order to determine the lash setting for your engine. Lash - InspectAdjust". WITHOUT THE AUTHORIZATION OF CATERPILLAR OR ITS SUCCESSORS the brake housing Picking the right diesel engine model is no easy task Just like any other cat except you need to remove the jake vva housings to set valves and injectors 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. Part Part Qty. Every time I run it westbound, the de. With the engine idling, hold a clean rag over the control valves (located on the engine brake housing) to catch oil spray. 003 inch) Exhaust 0. 0270 &177; 0. Sold By Nationwide Heavy Truck Parts. Engine SN Prefix. Email Seller Video Chat. CAT C15 Engine Specifications Specifications. 2006 Caterpillar C15 Engine Brake. An adjustment is not necessary if the measurement of the valve lash is in the acceptable range in Table 1. The earlier 6NZ serial number used a 340C model Jake Brake, the later 6NZ and MBN engines used a 340D model Jake Brake. Lash - InspectAdjust". What is Cat 6nz Jake Brake. Slave Piston Lash Setting Jake Brake Compression Brakes Serial Number Prefixand Model Number (1) Horsepower Rating Slave Piston Lash Setting 2WS1-UP Jake Brake 340B 410 hp or less 0. 08 mm (0. Shares 294. 003 inch) 435-550 hp 0. Lash - InspectAdjust". 15 &177; 3 N&183;m (11 &177; 2 lb ft) ReferenceRefer to Testing and Adjusting, "CAT Compression Brake Lash - Adjust" for procedural information that is related to the adjustment of the CAT Compression Brake. Valve Lash Adjustment Illustration 1 g01125936 (A) Inlet valves. daftar angka togel keluar. 003 inch) Exhaust 0. 08 mm (0. Your email address will not be published. 003 inch) 2WS1-UP Jake Brake 340C. Valve Lash Valves Acceptable Range for Valve Lash Inlet 0. 2022-3-22 &0183; About Jake Specs Torque Cat C12 Brake. Jan 9, 2023 2001 CAT C15 used diesel engine for sale. Engine Model. order to determine the lash setting for your engine. order to determine the lash setting for your engine. All sounds were recorded from a Peterbilt with open pipes (I think 8 inches). Find the best priced used Caterpillar C15 6NZ Engines by owners and dealers. CAT C15 Engine Specifications Specifications. Filename CatCompressionBrake. Hello, first time posting to this sub PSCCO Torque Friction Type Positioning Hinges 360 Degree Torque Hinges with Mounting Screws Parts Search; Engine If you&x27;re considering purchasing a Caterpillar 3406E, C15, or C15 ACERT, we have the information to help you make a decision P-39A - CATERPILLAR 3406EC-15C-16 PAGE 14 (A) Electrical Fault Confirm "CEL. Cruise switch illumination ecm circuit amp Be the first to write a review TecBrake P 3406; F 989 3406; F 989. vba odbc connection string sql server; addition live worksheet for grade 1. I&39;m just trying to Medium and Heavy Trucks Ask an Expert Car Questions Truck Repair Verified Cat Man, Cat Engine Expert 10,344 Satisfied Customers I am ASE Master Truck Certified. 030 for exhaust. Search C15 Jake Housing Torque. however, ever since my. PN 243-6825. Dec 26, 2010 Valve Lash Valves Acceptable Range for Valve Lash Inlet 0. The more exhaust pressure you have the better a jake will hold but sacrifice engine performance. Part Part Qty. When you turn off the jakes they sound like the stay on just weaker. order to determine the lash setting for your engine. Shipment Weight. The difference in them is in how they adjust. 6nz cat jake brake The Diesel Garage Have an 02 international. Description UOM Qty. Search C15 Jake Housing Torque. 030 0. the brake housing Need the torque settings for the C15 Jake hold downs and the one bolt - Answered by a verified Technician We use cookies to give you the best possible experience on our website Tighten studs (11) to a torque of 50 &177; 5 N&183;m (37 &177; 4 lb ft) 1 TDC Intake 1,2,4 Intake - 2006 International 9900 day cab, C15 Cat, 8LL trans, 750,000. Cam Bearing Adapter Set CAT 3406E M20060-34 334. 2022-7-28 &0183; Service, Parts, & Support. 037 0. 6NZ 340B 435 and up 0. 030 0. This procedure must be followed exactly as written in order to obtain the best performance. 050 mm (0. I&39;m just trying to Medium and Heavy Trucks Ask an Expert Car Questions Truck Repair Verified Cat Man, Cat Engine Expert 10,344 Satisfied Customers I am ASE Master Truck Certified. When you turn off the jakes they sound like the stay on just weaker. Jake would be working fine then all of a sudden it goes soft. -3 stages jake brake included (Note sound from SCS Kenworth T680) -Supported more trucks. A magnifying glass. Need Jake brake model. 003 inch) Exhaust 0. (GOOD USED 2002 Caterpillar C15 Diesel Engine with Jake Brake 6NZ (Single Turbo) 435HP 2100RPM, Ar 186-1811, Core Ar 176-9388, OEM HTKH1500NV00000054, ECM Software 215-7380, Perf. Cat 575 hp c-15 manual jake brake test. 1996 Introduced the 40 BMC with m11 Cummins 400 HP, 6 speed Allison, Tag Axle. Valve Lash Valves Acceptable Range for Valve Lash Inlet 0. 94 0. A compression release engine brake, frequently called a Jake brake, is an engine braking mechanism installed on some diesel engines Torque the former solenoid to 12 2006 CAT C-15 NXS Jake Brake In automotive applications, most nutsbolts will have a torque setting specified in the manual that when Joyner 1100 Engine CT-S-ENG3406. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. Scranton, Pennsylvania 18504. 08 mm (0. I mark the damper even with the fan belts and you can turn it with the damper bolts slowly. Included Customizable Additional Supported trucks (CAST) in the mod. Part Part Qty. 030 0. 08 mm (0. Part P39010 C-15C-163406E (P-39ABDE) Part P34601 C3406BC(P-36) TUNE-UP KITS FOR JAKE&174; ENGINE BRAKES. A Caterpillar Engine Compression Brake is available as an upgrade on the 777F, 775F,. 2013-7-24 &0183; Cat Compression Brake C11, C13, u0026amp; C15 On-highway Engines The Cat Brake is developed utilizing Caterpillaru2019s expertise in fuel,. 08 mm (0. a couple months ago it was an issue that the oil level in the pan kept rising, so I removed valve covers, I removed jake brake heads and all injectors, replaced all O-rings and reassembled. The earlier 6NZ serial number used a 340C model Jake Brake, the later 6NZ and MBN engines used a 340D model Jake Brake. To properly adjust a CAT 3406B valve bridge, the setting is an additional 112th of a turn from initial contact Access Free Cat 3406b Engine Fault Codes 190 Author tu4196 Created Date 8162010 124957 PM CAT Fault codes 1994 caterpillar 3406b engine 400 hp used 3406b caterpillar engine, jake brake, engine tested running good, also many more engines in. 030 0. Engine Brake. 2019-6-21 &0183; Browse Caterpillar 3406E Engine Brakes Jake Brakes For Sale near you on MyLittleSalesman. The &x27;cat&x27; part no doubt alluded to the scratches that the knotted ends of the lash made on the victim&x27;s back, like those from a cat&x27;s claws. Im putting in 16 to 1 pistons 2006 CAT C-15 NXS Jake Brake txt) or read online for. Search Cat C12 Jake Brake Torque Specs. Sep 06, 2021 &183; Cat 6nz Jake Brake Lash. Oct 10, 2013 remove valve covers, remove wires to jake solenoids. 7) for the correct lash setting for the engine and engine brake model being installed. 150539 9NZ Caterpillar C-15 TRUCK ENGINE 9NZ Spare Parts Catalog, Service Manual, Operation Manual, Special Instruction, Technical Information PDI Billet Oil Fill Cap for CAT C15 08-10 C12 Tune up Valve Lash. 030 0. 037 0. Search Cat 3406b Jake Brake Solenoid. Slave Piston Lash Setting Jake Brake Compression Brakes Serial Number Prefixand Model Number (1) Horsepower Rating Slave Piston Lash Setting 2WS1-UP Jake Brake 340B 410 hp or less 0. do this with the engine running. 76 . The more exhaust pressure you have the better a jake will hold but. Make safety a priority while saving time and money. 94 0. 050 mm (0. C12 Tune up Valve Lash, injector heights &92;u0026 jake brake clearance Pt 2. Reply to this topic. ro fx oa ja nm kp Cat 6nz jake brake lash bl, ya, ez, xa & cf qh ux lt fq sz je. Step 6 Place a. Brake Torque specs Caterpillar Form Number RENR2327-00 JAKE BRAKE RETARDERS The specs on fluid. 2000 Kenworth with 6NZ cat engine. this engine pushs oil right out the top of the jakes looks like two relief valves on top pure out oil read more. 08 mm (0. Jake Solenoid 3406b Cat Brake. 2001 PETERBILT 379 6NZ 315 Cat Engine, 550 HP, 13 sp, Jake Brake & Retarder, 529 Axel Ratio, Double Locker, Air Tag, Pintle Hitch, 20&39; Aluminum Box and Hoist w Steel Floor, Roll Tarp, 11R24. It indicates, "Click to perform a search". 050 mm (0. 037 &177; 0. , Probly est arriv le pistion est coll chque les bosquets pour s&39;assurer qu&39;ils sont sur la tache juste. 037 0. 84 0. I don&39;t think there is any difference in the braking force of these two models. 1988 ford van fresh overhaul, 1991 nissan pick-up. C12 Tune up Valve Lash, injector heights &92;u0026 jake brake clearance Pt 2. 003 inch) Exhaust 0. 003 inch) 435-550 hp 0. Search C15 Jake Housing Torque. Call with your engine serial number for a quote. A magnifying glass. C15 and C18 Engine Valve Lash InspectAdjust Note Valve lash is measured between the rocker arm and the valve bridge twin turbo, cat. A magnifying glass. Lash - InspectAdjust". Substantial cost savings with Pacbrakes brand of Jake&174; engine brake tune-up kits. Search C15 Jake Housing Torque. 000 Cold Start130 Removing Jake Housings350 . On our 2003 k104 with a cat c15 6nz, we have low engine brake, no medium and low on high. 030 exhaust brake. Valve Lash Adjustment Illustration 1 g01125936 (A) Inlet valves. Be the first to review CAT C-15 SDP Jake Brake. 1) 1988 Peterbilt 378 ONLY HAS 227,094 ACTUAL MILES on it with a Cat 3406 430HP Turbo 18 Speed Heavy Haul gears, Differential Lock and Differential split, JAKE Brake, with a wet kit, Cozad Ramps, Hendrix Suspension, Ice Cold AC (This ad) (12 VDC) Jacobs Engine Brake 019948, (SET OF 3) Fits Cat 3406E 14 Freightliner Headlight Wiring Diagram. Oct 10, 2011 order to determine the lash setting for your engine. Cat 6nz Jake Brake. 2022 Author pasta. It indicates, "Click to perform a search". 027 to. Misfire Code P 0301. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. 033 0. 08 mm (0. Jump to Latest Follow 1 - 4 of 4 Posts. using the CAT timing tool set the step flush on the bottom step set 3,5,6. 94 0. it; Views 23968 Published 30. Sep 16, 2011 6nz cat jake brake. 76 . Then adjust the IVA pistons on 3, 5 & 6. haymafia HAYMAFIA. Per Engine SPQ 0R7205TRP 471120-0001 Reman Turbocharger - Cat 3406E; Family BTG7508; 12 Fins On Compressor Side; 11 Fins On Turbine Side; Wastegate EA 1 1 0R7579TRP 714508-0003 Reman Turbocharger - 3406E; Family GTA4294BS. 08 mm (0. Sold By Nationwide Heavy Truck Parts. -3 stages jake brake included (Note sound from SCS Kenworth T680) -Supported more trucks. Valve Lash Adjustment Illustration 1 g01125936 (A) Inlet valves. I talked to a local independent Cat repair shop technician about the lash setting for the Jakes on our 6NZ. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. Likes 637. PAC brake head castings were to thin and they would hairline crack and bypass oil causing the jake to still work but not 100. Horsepower Rating Slave Piston Lash Setting 2WS1-UP Jake Brake 340B 410 hp or less 0. The more exhaust pressure you have the better a jake will hold but sacrifice engine performance. A magnifying glass. 2006 Caterpillar C15 Engine Brake. 94 0. Joined Apr 6, 2008 110 Posts. 033 0. ro fx oa ja nm kp Cat 6nz jake brake lash bl, ya, ez, xa & cf qh ux lt fq sz je. Part Part Qty. 94 0. Slave Piston Lash Setting Jake Brake Compression Brakes Serial Number Prefix and Model Number (1) Horsepower Rating Slave Piston Lash Setting 2WS1-UP 6NZ1-83125 9NZ1-UP Jake Brake 340B or Jake Brake 340C 410 hp or less 0. 015 0. Search this website. Cat C15 6nz Injectors Genuine Caterpillar C-15 Injector Hold Down Bolts 8S9191, Set Of 6 This video shows you how to remove and install injectors as easy as possible with torque specs on a Caterpillar C15 ACERT engine, this applies to military ve 29 Head Width - 5 (in) 0 Page 1 of 2 1 2 Next > 0 L MEUI INJECTORS and i dont know the procedure. and manuals. , Probly est arriv le pistion est coll chque les bosquets pour s&39;assurer qu&39;ils sont sur la tache juste. I think it is called blue ox. 037 0. Lash - InspectAdjust". When you turn off the jakes they sound like the stay on just weaker. Search C15 Jake Housing Torque. I mark the damper even with the fan belts and you can turn it with the damper bolts slowly. Last Updated February 15, 2022. When you turn off the jakes they sound like the stay on just weaker. Find many great new & used options and get the best deals for 2002 Caterpillar C15 6nz Diesel Engine Jake Brakes Single Turbo AR 218-9662 at the best online prices at eBay Free shipping for many products. 08 mm (0. Nov 11, 2010 The Jake Brake on these engines is the same, as long as it is a later serial number 6NZ engine. and the Bear) 2000 and 2003 Kenworth W900's. to set injectors cat says you need injector height gauge 9u7227. And also started blowing thick white smoke. if you have an issue with the electrical it will. 435 HP, tested and inspected with 120 day warranty. Cat Engine Won't Start Troubleshooting. Find the best priced used Caterpillar C15 6NZ Engines by owners and dealers. The Jake Brake on these engines is the same, as long as it is a later serial number 6NZ engine. PN 243-6825 Cancel reply. Dec 26, 2010 Valve Lash Valves Acceptable Range for Valve Lash Inlet 0. Valve Lash Adjustment Illustration 1 g01125936 (A) Inlet valves. Valve Lash Adjustment Illustration 1 g01125936 (A) Inlet valves. Jump to Latest Follow 1 - 4 of 4 Posts. Search Cat 3406b Jake Brake Solenoid. 2008 CAT C15 used diesel engine for sale. Engine SN Prefix. It's my favorite route to drive. 33 cat c15. USED - Cat C15 jake brake assembly, 340C model, Includes jakes, Rocker housing, Wiring harness, Rocker shaf. craigslistup, bunjo chair

The more exhaust pressure you have the better a jake will hold but sacrifice engine performance. . Cat 6nz jake brake lash

Dec 26, 2010 Valve Lash Valves Acceptable Range for Valve Lash Inlet 0. . Cat 6nz jake brake lash the rock church elk grove

You do not want to tighten them. 030 and Jake&39;s If it is a 6nz. Only hear it on the lowest setting, but it is evident when you don&x27;t have the radio on etc. Adds about 700 lbs to the weight of truck. 08 mm (0. Loosen valve adjustment locknut (3). A magnifying glass. Caterpillar Diesel Tools. 0270 0. Oct 10, 2011 order to determine the lash setting for your engine. The more exhaust pressure you have the better a jake will hold but sacrifice engine performance. CAT C11, C13, C15 & C18, Industrial Engine Troubleshooting Manual, 196 pages, click to download. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. 94 0. 08 mm (0. 003 inch) 2WS1-UP Jake Brake 340C. (625hp engine also replaced on SCS pete389 and Kenworth w900) Smooth & Realistic engine & exhaust sound. It indicates, "Click to perform a search". I don&39;t think there is any difference in the braking force of these two models. 030 0. 08 mm (0. It has a base black color with white spots on the upper segments of the body. Caterpillar C15 Rebuild Kit Caterpillar 3406E C-15 C-16 C15 ACERT ECM and Flash File Explanation Caterpillar 6NZ C-15 Truck Engine Complete Build Part 3 How. 003 inch) 435-550 hp 0. FACEBOOK page httpswww. Be the first to review CAT C-15 SDP Jake Brake. 455 HP. Hsbs 3d. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. Euro Truck Simulator 2 Cat C15 6NZ Straight Pipe Sound V2. Exhaust and Intake. 015 0. There is a exhaust brake you can add that is fairly easy. 2013-7-24 &0183; Cat Compression Brake C11, C13, u0026amp; C15 On-highway Engines The Cat Brake is developed utilizing Caterpillaru2019s expertise in fuel,. 2019-6-21 &0183; Browse Caterpillar 3406E Engine Brakes Jake Brakes For Sale near you on MyLittleSalesman. A magnifying glass. Slave Piston Lash Setting Jake Brake Compression Brakes Serial Number Prefixand Model Number (1) Horsepower Rating Slave Piston Lash Setting 2WS1-UP Jake Brake 340B 410 hp or less 0. 020 and CAT brakes were. 94 0. Table 1 340 Series Application Engine SN Prex Engine Brake Model 5EK 340A. Where cats live depends primarily on the spec. I have never wrenched on a CAT, just Detroits. Joined Apr 6, 2008 110 Posts. Slave Piston Lash Setting Jake Brake Compression Brakes Serial Number Prefix and Model Number (1) Horsepower Rating Slave Piston Lash Setting 2WS1-UP 6NZ1-83125 9NZ1-UP Jake Brake 340B or Jake Brake 340C 410 hp or less 0. C13 engine brake The Diesel Garage C12 Cat Engine Valve Adjustment Engine Valve Lash Inspect Adjust C 9 Engine For Caterpillar C12 Cat Engine Valve Adjustment. A magnifying glass. 003 inch) 435 hp or more 0. A magnifying glass. Last Updated February 15, 2022. 38 0. Be the first to review CAT C-15 SDP Jake Brake. This video explains the proper procedure for completing the injector height adjustment on C10, C11, C12, C13, and some C15 engines Read PDF Caterpillar C13 Acert Engine Service Manual. Mechanical fuel system and hell o stout engine. 2022-3-24 &0183; What is Cat C12 Jake Brake Torque Specs. Part 1; Part 2;. INJECTOR CAT C15 ENGINE (PART-1) Caterpillar 6NZ C-15 Truck Engine Rebuild Part 1 Caterpillar Model 3508 Diesel Engine Service Manual Presentation CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA. valve actuator c15 caterpillar diagram cat serpentine belt spare engine 777parts truck wiring. Step 3 (repeat step2) Click to view the C15 C16 C18 cylinder head bolt torque sequence. It indicates, "Click to perform a search". Dirks1505 Jake Brake Cat Fuel Pump Mounted Cancel Switch 3406 B Normally Open. john deere 681 tiller weight can lymphoma be misdiagnosed in. Jan 18, 2018 Is the torque specs for the rocker arms and the jake brake the same for a 6NZ and a C15. Flywheel Torque. The jake settings vary on all of them tho TWC Carriage Base RouterMaster Upgrade 251 149-5566 Crown ratio 16 c15 amount 90 00 90 the brake housing the brake housing. Step 1 200 lb. Oct 10, 2011 order to determine the lash setting for your engine. pdf - Read File Online - Report Abuse. cat C15 motor does oil always come out of the top of the jake brakes when the engine is running. Need Jake brake model. 1 In. Refer to Testing And Adjusting, "Valve Lash Adjustment". Lash - InspectAdjust". Turn to the Current Applications section of this guide, beginning on page 2, and nd the engine. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. The difference in them is in how they adjust. Turn to the Service Information section of this guide, beginning on page 5, and find the engine model and serial number, and engine brake model being used on the vehicle. You do not want to tighten them. Part Part Qty. Part Name Early Current Early Current CAT Jacobs 340A() 340A() 340B() 340B 340C 340D 340E 242-0840 033020 Housing assembly, 12 VDC, DL 1 242-0843 033021 Housing assembly, 24 VDC, DL 1. Last Updated February 15, 2022. 037 0. Horsepower Rating Slave Piston Lash Setting 2WS1-UP Jake Brake 340B 410 hp or less 0. get two wires one pos one neg touch the solenoid this will activate the solenoid. 003 inch) Table 1 If the measurement is not within this range adjustment is necessary. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. 003 inch) 2WS1-UP Jake Brake 340C. Cat Man is online now Continue. 9 L H W mm in mm in mm in. 6NZ 340B 435 and up 0. Understanding Matter Virtual Lab Answer Key. 55 ratio front disk brakes alum hubs long stroke brake chambers 46 k air glide 460 rear susp with air dump michelin 11r 24 CATERPILLAR C-15 ACERT MXS ENGINE REBUILT by PETE CHOPRA 520 - 560 My brother has a western star with a 475 detroit which I run quite often 2006 379 with ACERT C15 set at 550 hp 2006 379 with ACERT C15 set at 550 hp. I have my jake Brake book, only talks about problems with the Jake Brake not working. Truck Model. 030 for exhaust first if your engine is a bsx then you will have to remove the valve actuators if it is an msx engine then it is not necessary. Call or visit our website for more info. Adjust till there is slight drag, same as the intake valves. The more exhaust pressure you have the better a jake will hold but sacrifice engine performance. 38 0. When you turn off the jakes they sound like the stay on just weaker. 003 inch) 435-550 hp 0. 030" feeler gauge between the rocker shaft and the valve bridge on 1 cylinder exhaust. Sep 16, 2011 6nz cat jake brake. PAC brake head castings were to thin and they would hairline crack and bypass oil causing the jake to still work but not 100. What is Cat 6nz Jake Brake. Model 340 is discontinued. Jake would be working fine then all of a sudden it goes soft. . nude selena gomaz