Np205 transfer case fluid

I have a 1973 Chevy truck with the NP205 gear driven transfer case. My original 1973 manual says to fill it with 80w gear oil. Later manuals for the same transfer case specify ATF instead, I'm guessing this was for gas mileage reasons. The newer 205 transfer case that calls for ATF is the same as far as I know to the old one that I have.

Np205 transfer case fluid. QU40422 1310 CV Output Yoke for 1973-1977 NP203, NP205. 40422. $133.98. Add to Cart. 1. 2. Next. Shop Now for Input Yokes and Output Yokes to fit 1972-1993 Dodge New Process NP205 Transfer Cases in W100, W200, W250, W300, & W350 4x4 trucks. In stock, quick shipping.

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March 30, 2023. A transfer case leaking transmission fluid is a serious problem. It can cause damage to the transmission and other components in your car. To fix this, you’ll need to identify where the leak is coming from, clean off any excess fluid, and replace any damaged parts or gaskets. You may also need to add additional fluid if needed.Transmission & Transfer Case. Transfer Case . Np205 OIL TYPE. Thread starter Uscombsp; Start date Sep 18, 2017; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. ... The GM recommendation in my 1975 repair manual is to use SAE 80 or SAE 90 weight GL-5 gear oil in the NP-205, so …88 4Runner Beach Ride. 11 Tundra Double Cab Rock Warrior. E. Elwenil. 17248 posts · Joined 2005. #3 · Oct 3, 2010. Yup, 30 wt motor oil is correct for an NP203. The NP203 is easy to identify as it's a large cast iron housing with an aluminum tail housing. 1988 Dodge AW450 Ramcharger-318TBI-NP435-NP205-D60s.The NP205 is a cast iron, gear drive transfer case with a 1:1 high range and a 1.96:1 low range. It is considered by many to be the strongest transfer case ever factory installed in one ton and smaller 4x4's. The …A transfer case is an intermediate gearbox that transfers power from the transmission of a motor vehicle to the driven axles of four-wheel-drive, all-wheel-drive, and other multi-axled on- and off-road machines. A part of the vehicle's drivetrain, it employs drive shafts to mechanically deliver motive power. The transfer case also synchronizes ...

This transfer case is considered by most people to be nearly indestructible in most applications. The cast iron housing combined with beefy internals puts this case weight at nearly 140 pounds dry. High-range gearing is 1:1, and the NP205 has a low-range ratio of 1.96:1. It was offered in both driver-side and passenger-side front output versions.Leaks: A damaged transfer case may result in fluid leaks, which can be identified by fluid underneath the vehicle or around the transfer case. Wheel slippage: ... NP205: 1969-1991: Chevy and GMC full-size 4×4 pickups and SUVs: …The NP205 is a cast iron, gear drive transfer case with a 1:1 high range and a 1.96:1 low range. It is considered by many to be the strongest transfer case ever factory installed in one ton and smaller 4x4's. The NP205 (IHC Code T142 or 13142) replaced the New Process NP202 (IHC Code T141 or 13141) which was only used by International.Jun 25, 2010 · Location. wilkes-barre, pa. Jun 25, 2010. #5. ATF installed at factory Many moons ago got a new 1988 V30, SM465/NP205. Gear oil was in the trans and ATF in the transfer. After installing a trans and transfer pto's replaced transfer lube with 80W90 GL5. Still goes good now after 22 years. I believe there are some transfer cases that use trans fluid, but the ones common in our years, the Rockwell T-221, NP205 and Dana 20 all use gear oil. 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 OldsmobileLeaks: A damaged transfer case may result in fluid leaks, which can be identified by fluid underneath the vehicle or around the transfer case. Wheel slippage: ... NP205: 1969-1991: Chevy and GMC full-size 4×4 pickups and SUVs: …The NP205 is a part time, cast iron transfer case with a figure eight front bolt pattern configuration. This assembly was used in 1971-79 vehicles. Transmission. This adapter kit is designed for exclusive use with the GM TH400 automatic transmission. The TH400 has a case length of 24.250” and a “Texas-shaped” oil pan underneath it.

Try driving the truck to warm the fluid then drain it. Add two quarts ATF to the case then put it in nuetral and run the trans in drive for a couple of minutes to flush the case then re-drain and fill with either synthetic gear oil or a 10w30 motor oil, you could even run ATF if you prefer.1988 Ramcharger AW450-318EFI-NP435 4 speed-NP205 Transfer Case-Dana 60s-Braden Wormdrive Front Winch 2018 Ram 2500HD Crew Cab 4WD 5.7L I am the unknown Will, The Anger that threatens glory and ruin: ... also a good idea to check the fluid, bad fluid, or no fluid would cause gear whine, premature wear on bearings, and …Posts: 201. The NP205 holds 2.5 qts. prior to 1980 they had 85w90. In 80 GM switched to dextron I suspect for fuel economy. But in 80 they also redesigned the ouput shaft to a slip yoke instead of a slip shaft driveshaft I don't know if the redesign required the fluid change.Sep 22, 2019 · NP205 TRANSFER CASE ADAPTER SEALS & O-RING REPLACEMENT. K10 Transfer case full of or filling with transmission fluid? Watch this thorough step-by-step repl... QU50193 NP205 Front Output Synchronizer Center Clutch for GM. 50193. $53.98. Add to Cart. Shop Now for Synchronizer Parts to fit 1982-1985 GM New Process NP205 Transfer Cases. In stock, quick shipping.

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Peritoneal fluid analysis is a lab test. It is done to look at fluid that has built up in the space in the abdomen around the internal organs. This area is called the peritoneal sp...Dodge & Ram Transfer Case Fluid Type; Ford Full Size 4x4 Transfer Case Fluids; Warn Premium Hub Applications; Warn Standard Hub Applications; ... NP202, NP203, NP205 Transfer Case Shaft Lock Nut is a USA Made, 7/8" Extra Fine Thread, Low-Profile, OE Spec Hex Lock Nut for Threaded Output, Counter Shaft, or Remote Input shafts on New …Waterproofing is a crucial aspect when it comes to building structures, specifically for huge residential and commercial edifices. It is why, rather than Expert Advice On Improving...May 20, 2005 · 215. Reaction score. 2. Location. Riverside, Ca. 78'-79' Bronco's came with either the NP203 or NP 205. The NP 205 uses 85W-140 gear oil. I run a combination of Lucas Oil and 85W-140 as per the instructions on the back of the Lucas oil bottle. I have found that my transfer case runs quieter, cooler and it is easier to shift.

np241's take dexron/mercon ATF. everyone seems to think ATF is the best to run in them because that is what the manufacturer calls for. tbh, you could run any ATF as the transfer cases are not ATF additive sensitive like A/T's. the np205 or any gear to gear T/C will take gear oil. the chain drive models take ATF unless specified by the ...Shop Ram 1500 transfer case fluid, Ram 2500 transfer case fluid, Dodge Dakota transfer case fluid, Dodge Durango transfer case fluid, and more at Torque King. Menu. Search. Close Search. ... NP205 80w90 GL5 * 4.5 Pints : 1974-1979: Ramcharger: NP203: SAE 10w30 Engine Oil : 9 Pints : 1975-1979: W100/150/200/250: NP203: SAE 10w30 …The NP205 Transfer case takes 2.5qts. There has been quite a bit of discussion concerning the type of oil (gear vs ATF) from 1980 on. ... The recommended fluid type for the transfer case on a 1987 ...Does Fluid Film work? We review Fluid Film, plus compare it with its popular competitors, Krown and NH Oil. Find the results inside. Disclosure: FQF is reader-supported. When you b...1. GM New Process 205. GM TRANSMISSION AND TRANSFER CASE INFORMATION: The early GMs 1968-70 used a Dana 20 & Rockwell style transfer case and no adapters are available for these vehicles. In 1971, New Process introduced a model NP203 (chain-driven), and NP205 (gear-driven) transfer case. Both of these transfer cases used various input splines.Aug 16, 2016 ... Today we show you how to replace the rear seal on the np205 transfer case. A small leak and drip developed from the back of the transfer ...Explore our Ford transfer case fluid recommendations at Torque King 4x4. We’ll help you find the right type of fluid for Ford transfer case types that you need for your full-size 4x4 truck. ... ***1978-1979 NP205 Part Time Transfer Case: For 1978 and 1979, Ford specifies Ford D8DZ-19C547-A Standard Transmission Lube for all Bronco and F150 ...The 4 transfer cases availalbe in Squarebodies from 73-91 were NP203, NP205, NP208 and NP241C. All are passenger side drops, and all are manufactured by New Process. Here is a little information on all of them. And we'll add more info as the thread grows. Soon, we'll have all the transfer case info all in one thread which comes in handy for ...NP 203 is less durable than NP 205, which is bulletproof. However, the NP 205 is all gear driven, cast iron, and part time T-case. The NP205 is completely gear driven, can be twin splined with little effort, & is probably one of the most robust light-duty transfer cases ever produced. It has a four-wheel drive as well.

Posts: 201. The NP205 holds 2.5 qts. prior to 1980 they had 85w90. In 80 GM switched to dextron I suspect for fuel economy. But in 80 they also redesigned the ouput shaft to a slip yoke instead of a slip shaft driveshaft I don't know if the redesign required the fluid change.

How do you know if your fluids and electrolytes are in balance? Find out. Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine, tissue...Apr 22, 2005 · Bluefield, WV. Apr 22, 2005. #3. My ZF is sitting here in the floor, so this is straight off the tag. Oil Capacity: 3.2 liters. Oil Grade: ESP -M2C 166-H. That oil grade means nothing to me. Guess it would if you had access to the ford oil #'s. The oil in it was real thin stuff, had a red tint to it, looked alot like ATF. A transfer case is an intermediate gearbox that transfers power from the transmission of a motor vehicle to the driven axles of four-wheel-drive, all-wheel-drive, and other multi-axled on- and off-road machines. A part of the vehicle's drivetrain, it employs drive shafts to mechanically deliver motive power. The transfer case also synchronizes ...The NP205 Transfer case takes 2.5qts. There has been quite a bit of discussion concerning the type of oil (gear vs ATF) from 1980 on. ... The recommended fluid type for the transfer case on a 1987 ...NP205 TRANSFER CASE ADAPTER SEALS & O-RING REPLACEMENT. K10 Transfer case full of or filling with transmission fluid? Watch this thorough step-by-step repl...Shop Now for Gears, Shafts, and Coupler Sleeves to fit 1972-1993 Dodge New Process NP205 Transfer Cases in W100, W200, W250, W300, & W350 4x4 trucks. In stock, quick shipping. Gears: NP205 Transfer Case Low and High Gears sometimes need to be replaced due major wear on the clutch teeth. Wear on the low gear inside bearing bore is even more ...#1. What kind of lube do I use in a 205 T-case? I have an old Ford shop manual and it says to use 50wt engine oil----I will be driving this truck in winter -20 cold and summer 90 heat. Also how much lube is needed?29K views 4 years ago. How to change the transfer case fluid in a New Process NP203 and NP205 transfer case in a 1967-1987 Chevy and GMC Pickup Truck.The overall heat transfer coefficient represents the total resistance experienced as heat is transferred between fluids or between a fluid and a solid. The two materials refers to ...

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NP205 Colossus is a fully modern transfer case utilizing billet shift carriers machined from half inch thick steel to ensure performance and smooth shifting control in the most demanding applications.. Gear Compatibility: Our DIY Builder case is compatible with both stock NP205 gears, or you can upgrade to the JB Conversions 3:1 LowMax gear set to …NP205 New Process Transfer Case Diagram. The NP205 transfer case is a heavy duty gear driven transfer case in a cast iron case. The NP205 gear driven transfer case is considered by many to be the king of bulletproof. It was supplied in many GM, Ford, International and Dodge full-size trucks. Twin stick conversion for the NP205 is simple …May 22, 2020 ... ... T-case combo, to show how easy it can be. Then I put them back in and remove the drivetrain as usual. The NP205 transfer case comes out with ...Locate transmission jack/adapter just below transfer case. Remove mounting bracket between frame and NP205 if one is present. Using a 9/16 th socket or wrench, remove all the bolts that connect the transfer case to the C6 rear shaft case. Note any movement between the transfer case and the C6, the RTV gasket sealant and friction should keep the ...Feb 19, 2020 · Secure the vehicle on a level surface. Locate the oil fill plug on the transfer case. Remove the top oil fill plug. Using a flashlight, check for oil at the fill plug hole. What kind of fluid goes in a Chevy transfer case? Conventional transfer cases require SAE 80W or SAE 80W-90 GL-5 gear lubricant. Full time systems use SAE 10W-30 or 10W-40 ... Dodge & Ram Transfer Case Fluid Type; Ford Full Size 4x4 Transfer Case Fluids; Warn Premium Hub Applications; Warn Standard Hub Applications; ... QU20030 New Process NP205 Transfer Case Front Yoke Slinger for all NP205 yokes that have a 2.125" ground hub diameter plus our QU40823 Yoke with 2" diameter hub. Use this Genuine USA …Install the case yoke, oil seal, output shaft yoke washer and shaft nut on the front or rear output shafts. Tighten the nut to 203-244 Nm (150-180 lb-ft) front; 163-203 Nm (120-150 lb-ft) rear. Connect the front or rear driveshaft to the transfer case output shaft case yoke. Refer to Section 05-01.Ford NP205 Transfer Case 76-79 Married. Six bolt circle pattern, female 31 spline input. Transfer Case is completely rebuilt with new wear parts (bearings, seals, etc.) and inspected gears and shafts. The NP205 is arguably the King of Transfer Cases. It's a heavy duty, gear driven unit that was used in a variety of applications. ….

the np203 case - since its chain driven uses 10w 30 motor oil. i think only the aluminum transfer cases used the atf. if you dont wanna use regular gear oil - you can do this - buy some synthetic gear lube - redline MTL gl4 is real nice stuff - its kinda expensive though like over $10 a quart. and that adds up real quick since the np435 and ...The NP205 is identified by several features: 1. The transfer case is one piece of cast iron. There is a short bearing retainer/output housing at the tail of the case, and aluminum bearing retainers/seal retainers at the front and rear outputs but the working parts are all in a single iron housing. 2.Received 24 Likes on 19 Posts. Zulder, I'm quite sure the NP205 transfer case has had automatic transmission fluid, 30 weight motor oil, and yes even gear lube as factory approved lubricants over the years. If you were going to be running 90% street, I wouldn't hesitate to use ATF.QU50454 AM Transfer Case Rear Bearing Retainer 5 Bolt Gasket. 50454. $1.98. Shop Now for Gaskets to fit 1969-1975 IHC New Process NP205 Transfer Cases. In stock, quick shipping.Leaks: A damaged transfer case may result in fluid leaks, which can be identified by fluid underneath the vehicle or around the transfer case. Wheel slippage: ... NP205: 1969-1991: Chevy and GMC full-size 4×4 pickups and SUVs: …Try driving the truck to warm the fluid then drain it. Add two quarts ATF to the case then put it in nuetral and run the trans in drive for a couple of minutes to flush the case then re-drain and fill with either synthetic gear oil or a 10w30 motor oil, you could even run ATF if you prefer.NP205 Transfer Case. Below you will find a detailed list of the NP205 Transfer Case parts that includes complete rebuilt Transfer Cases, bearing rebuild kits, gaskets, seals, small parts, individual …CHRYSLER / DODGE TRANSFER CASES: Transfer Case Model: Fluid Type: NP203: 30WT: NP205: 80W90 Gear Oil: NP207: ATF (Dexron III or higher) NP208: ATF (Dexron …TK80044 Torque King® GM Transfer Case Front Output Seal for all Chevy and GMC 1973-1979 NP203 and 1969-1991 NP205 transfer cases. Original equipment type, double lip, double spring seal provides optimum sealing performance even on 1980 and newer GM NP205's that use automatic transmission fluid for lubrication. Made in U.S.A. or Mexico. Np205 transfer case fluid, One common issue with the NP205 transfer case is fluid leakage. This can be caused by worn seals, gaskets, or damaged linkage. It is important to diagnose the source of the …, The cast steel, gear driven NP205 typically takes gear oil or motor oil depending on the climate. No 1/2 ton since 1974 has been equipped with the NP205. If you don't have a W250 or W350 with the D60 front axle, you didn't get the NP205 in a '80-'93 model. Anything can be swapped, so make sure you positively ID your transfer case …, 034. 5526 posts · Joined 1999. #5 · Nov 9, 2001. Make sure your seals between tranny and t-case are ok, and I'd use gear lube in the 205. Keep in mind the automatic tranny stuff is pressurized, while the t-case is not. That just means that if a seal does let loose, you get a little auto tranny fluid in the gear lube (won't really hurt ..., Re: Manual Trans/ Transfer Case oil. « Reply #1 on: March 03, 2017, 09:01:31 PM ». 80w90 or 75w90 gear oil for transmission, For the 205, I am pretty sure gm started using atf in them around the late 70's, but you won't go wrong using the same oil as the transmission. Sent from my iPhone using Tapatalk. Logged., Clutch, Transmission, Differential, Axle & Transfer Case - NP435 and NP205 fluid - The truck: 1979 F150 Custom 4X4 that came OE with an inline 6, but now has a 302 V8. I have an NP435 4spd trans mated to an NP205 transfer case. If I change the fluid in both, I would like to know what fluid to use and how much fluid to..., Most early NP205 units came with the 10-spline, 1.25-inch front output shaft. Later ones came with a 30-spline, 1.25-inch shaft which is stronger, but it still isn't the …, May 20, 2005 · 215. Reaction score. 2. Location. Riverside, Ca. 78'-79' Bronco's came with either the NP203 or NP 205. The NP 205 uses 85W-140 gear oil. I run a combination of Lucas Oil and 85W-140 as per the instructions on the back of the Lucas oil bottle. I have found that my transfer case runs quieter, cooler and it is easier to shift. , Jul 13, 2021 ... The Ford New Process 205 transfer case is the best OEM gear box ever offered in a factory vehicle. Still being used today in many hardcore ..., CHEVY NP205 TRANSFER CASE 32 SPLINE (#285676690571) See all feedback. Back to home page Return to top. More to explore : Engines for Chevy, Crate Engines for Chevy, 1987 Chevy Cars & Trucks, 1950 Chevy Cars & Trucks, Rally Wheels for Chevy, 1952 Chevy Cars & Trucks, Chevy Pickup Cars and Trucks,, Mar 18, 2015 ... https://www.facebook.com/GebBuilt/ Here is the final assembly and finished NP205 twin stick transfer case for my 86 Chevy project truck with ..., Chrysler's New Process Gear Division built gear drive NP205 transfer cases for 1972-1974 and 1980-1993 Dodge Trucks. The 1972-1974 version was a remote mount unit used in W100, W200, and W300 4x4 Trucks. For the 1975-1979 models years, Dodge opted to use the troublesome NP203 full time transfer case instead of the reliable NP205, but effective ..., Covers New Process NP205 Transfer Cases found in Chevrolet, Dodge, Ford, GMC, and International Harvester (IHC) 4x4 vehicles from 1969 to 1993. Roberts, MT 2006. 18 pages of technical content, 8½" x 11". Available in printed version only: Printed Hard Copy (TM2002P is 8-1/2"x11") Also See: TM2000 NP205 Transfer Case Service Manual, Re: Transfer case fluid. Also welcome to the site. In the 76 service manual which can be found in the tech section, on page 7M-3 (page 203) 3 or 4 speed manual transmission should have the 205, the automatic transmission should have the 203. Unfortunately this manual does not have the lubrication for transfer cases, it say's to …, I have a th350 trans and a np205 transfer case. I have replaced the 2 seals in the adapter in last month twice and I'm still getting transmission fluid in the t case. I'm still running the factory motor mounts and factory crossmember for the transfer case so it's not at any crazy angle., 1. GM New Process 205. GM TRANSMISSION AND TRANSFER CASE INFORMATION: The early GMs 1968-70 used a Dana 20 & Rockwell style transfer case and no adapters are available for these vehicles. In 1971, New Process introduced a model NP203 (chain-driven), and NP205 (gear-driven) transfer case. Both of these transfer cases used …, Unlike the NP203 chain drive transfer case, the NP205 gear drive transfer case is pretty tolerant of different fluids as diverse as Dexron ATF (used in GM NP205 1980-1991) and SAE 140w Gear Lube (used in Dodge NP205 above 90°F). Ford does not claim XT-4-QGL or XT-M5-QS is backward compatible with the 1978-1979 NP205, but while we recommend you ... , The NP205 transfer case, also known as the New Process 205, is a heavy-duty, gear-driven transfer case that was first introduced in 1969. It was designed to handle the demanding conditions of off-road and heavy-duty applications. The NP205 transfer case is known for its strength, reliability, and ability to distribute power evenly to all four ..., New Process NP205 Transfer Cases were built with a wide variety of driveshaft yokes from 1310 to 1410 series plus 4 types of Constant Velocity yokes. Most of the output shafts and all the remote input shafts are 1-3/8" in diameter with 32 splines. Although you may require a different seal, any of our 32 spline end yokes or CV yokes will fit any ..., Got a problem, I mated a Np 205 to a th-350 tranny using the correct adapter with new seals. The truck has been a work in progress and has never been driven under power, just started long enough to set the timing etc. ... I had a 350/205 in a 72 blazer and it did have the bearing in the adapter. It always leaked trans fluid to the transfer …, The casting comes with a new SM465 gasket and fasteners to adapt to a Chevy / GM New Process 205 (10 Spline Input) transfercase. Replaces GM adapters 15596724 and 6271549. Includes: This is a replacement casting for the stock Chevy / GM / Muncie SM465 Manual 4 Wheel Drive GM 1969-1982 transmission adapter. The GM casting was a cast iron …, NP205 New Process Transfer Case Diagram. The NP205 transfer case is a heavy duty gear driven transfer case in a cast iron case. The NP205 gear driven transfer case is considered by many to be the king of bulletproof. It was supplied in many GM, Ford, International and Dodge full-size trucks. Twin stick conversion for the NP205 is simple and can ... , A New Process model 205 Transfer case (which is a part time, gear driven, non-chained, direct powerflow design transfer case that is housed in a cast iron body) …, May 20, 2005 · 215. Reaction score. 2. Location. Riverside, Ca. 78'-79' Bronco's came with either the NP203 or NP 205. The NP 205 uses 85W-140 gear oil. I run a combination of Lucas Oil and 85W-140 as per the instructions on the back of the Lucas oil bottle. I have found that my transfer case runs quieter, cooler and it is easier to shift. , The NP203 is identified by several features. The transfer case is made up of 4 sections bolted together, a range box, the chain case which houses the chain drive to the front driveshaft output, the differential housing, and the output housing. The front 2 sections are cast iron, the back 2 sections are typically aluminum., I was going to change the transfer case fluids, but I'm not sure which transfer case I have. Chilton Manual says NP203 and 205 were used from 76-79. 205 is a part time and 203 is full time. 203 calls for engine oil and 205 calls for gear oil. If somebody could help me identfiy it I'd appreciate it., Sep 22, 2019 · NP205 TRANSFER CASE ADAPTER SEALS & O-RING REPLACEMENT. K10 Transfer case full of or filling with transmission fluid? Watch this thorough step-by-step repl... , QU50458 Ford NP205 6 Bolt Round Transmission to Transfer Case Gasket. 50458. $4.98. Out of Stock. 1. 2. Next. Shop Now for Gaskets to fit 1973-1979 Ford New Process NP205 Transfer Cases. In stock, quick shipping., Truck Year. 1985. Truck Model. K20. Engine Size. 5.7. After reading about 3-4 different amounts of ATF these cases take, just wondering if anyone knows for sure. My 208 puked fluid out of every seal, but it was assembled wrong, so its a wonder it wasn't worse than it was. I see to fill it til it comes out the filler plug, stop at an inch below ..., Aug 29, 2010 · The 4 transfer cases availalbe in Squarebodies from 73-91 were NP203, NP205, NP208 and NP241C. All are passenger side drops, and all are manufactured by New Process. Here is a little information on all of them. And we'll add more info as the thread grows. Soon, we'll have all the transfer case info all in one thread which comes in handy for ... , The 1969-1974 version was a remote mount unit used in W100, W200, and W300 4x4 Trucks. For the 1975-1979 models years, Dodge opted to use the troublesome NP203 full time transfer case instead of the reliable NP205, but effective with the 1980 model year, the NP205 was again in the Dodge lineup as the sole transfer case offering for W300 1 ton …, The process to remove the transmission assembly is very similar for both the two- and four-wheel-drive Nissan Pathfinder models. You remove the transmission and transfer case as a ..., When most people think of the New Process 203 transfer case, two things come to mind: 1) 300 bulky pounds of cast iron. 2) Undesirable full-time operation. One of the biggest mis-conceptions about ..., The NP203 is identified by several features. The transfer case is made up of 4 sections bolted together, a range box, the chain case which houses the chain drive to the front driveshaft output, the differential housing, and the output housing. The front 2 sections are cast iron, the back 2 sections are typically aluminum.