WILL IT START? John Deere 310G Backhoe Problems PART 2! WILL IT START?? John Deere 310! ABANDONED! Part 1 John Deere 310C Backhoe - Troubleshooting Loss of Power John Deere 310se backhoe doing a big job John Deere. But even the most powerful, and well-ranked products face a few issues sometimes. · Model: 310J. Price: US$ 59. John Deere 450 G Coming Soon! Call for Details and Pricing! OFF ROAD DUMP/ROCK TRUCKS: 1. My JD 310C was slow about going into forward but went into revesre fine. 5L-24 R. Lawn Tractors. ET Monday through Friday and Saturday from 9 a. Ok so we got the old backhoe running. DG Diagnostics (DGD) is the software included with the DPA 5 that displays faults, component information and basic vehicle parameters. The axle takes the same oil as the transmission, J20D, which is good, one less fluid to buy and store. · Model: 310J. Choice of e23™ PowerShift Transmission or Electric Variable Transmission (EVT) 4-Post cab suspension. Plus, an intense vibration during operation seems to jar, loosen and potentially break or wear down moving parts, which leads to repairs. I have a 310d John Deere backhoe with a transmission problem. This deck has been through several part changes. John Deere 450 B. Standard Seat, Open Station 18X8. Back to top Mike M Tractor Guru Joined: 31 Mar 1998 Posts: 30090 Report to Moderator. Fast Responsive Service. 2wd Standard Digging Arm. 166 (replaces 5. Distance From Dunlap, Illinois Update. Thanks fuelhog, it was there under the hood. Collar-shift with hydraulic reverser containing hy draulic wet clutches provide 8 speeds forward and 4 rearward. La105 la115 la125 la135 la145 la165 la175 serial number. the tractor won’t go forward or reverse, then start by purging the system to remove any air. The John Deere X310 is equipped with the transaxle Kanzaki, variable speed hydrostatic transmission K58H (infinite forward and reverse), internal wet disc brakes and power steering. 5 L (275. 00 USD. If it was as series designation, like a Series D it would be 310D on the tag, no spaces or dashes between the model number and series letter. 0 TRURO, NS. 5 L (276. 0 cu·in) four-cylinder natural aspirated diesel engine or a 4. Common problems on the list include things like uneven grass cutting, slipping belts, or minor engine problems. 00 Exchange $600. maintenance of 7000 drawn and conservation, 7100 folding and integral max-emerge planters John Deere. Fits Models with Four Wheel Drive. John Deere 4450 Tractor -Powershift Transmission, 540/1000 PTO, 3pt, Dual Remotes, One Owner, *ManualExpress Financing Get Pre-ApprovedGet a FR8Star Shipping Estimate. This happens about twice a month lasts for about 2 hours and then does reoccur for about another month. The John Deere 310E is equipped with one of two engines: a 4. Many users reported facing this problem. pencil type; marked 38416, blue color code. Engine power PS (hp ISO) at max engine power speed (ECE-R120). Sep 2, 2014. First we had a major leak on a hose connection right down in under the seat next to the filter. Its your choice. 2019 John Deere 310SL 4x4 Backhoe Loader. It indicates, "Click to perform a search". John deere 310d transmission rebiuld2018 John Deere Backhoe 310SL Install with Dual Color Lights 2005 John Deere 410G Backhoe. Aug 24, 2014 · I have a John Deere 310 Backhoe (1971-75). John Deere 200 & 900 Series Cutting Platforms, 40 & 90 Series Corn Heads, 50 & 50A Series Row Crop Heads Service Technical Manual（TM1581）. Carburetor New. Our most spacious and comfortable cab. Reviewed in the United States on April 19, 2022. 75) Rear PTO: independent: Pto Power: 166. John Deere 6420 PowrQuad 24/24 transmission. John Deere 310G Backhoe Problems PART 2! Page 3/18. It indicates, "Click to perform a search". 5 L (275. Get in Touch. John Deere 500C Power: Engine (gross) 83 hp 61. I think there is a button on your bucket control lever in the cab to cut out the drive. What a easy way to find your problem and repair it on the spot, no down time on the job site, With our Downloadable Repair Manual PDFs you instantly have access to the material needed to get you running again. This is the Highly Detailed factory service repair manual for theJOHN DEERE X304 LAWN TRACTOR, this Service Manual has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. John Deere 310K 4x2 Backhoe Loader. Transmission, Drivetrain & Axles; Valves; Wheels, Tires, Tracks & Parts;. zi; tw. How to solve this John Deere Power Reverser transmission problem? Firstly try replacing the transmission pressure sensor, if that doesn’t work then check for an oil leak in the servo assembly of the particular gear. Cromwell, Connecticut. First, make sure you have your mower manual at hand. it was in a 5 gal container. Carburetor New. Add to cart. A fluid leak is typically caused by worn or cracked gaskets or seals in the transmission. · John Deere has been in the business of making agricultural machinery and equipment for a very long time. Independent Link Suspension (ILS™) Three cab and visibility packages available to customize your tractor. They made me an offer I couldn't refuse, so I own one. Over the course of 5 years, a customer who purchased a 4640 display and a 5-year subscription will spend less money than the customer who purchased a GS3 2630 with activations. Find great deals or sell your items for free. One of the most common problems users encounter while using the John Deere power quad transmission is that the shuttle shift fails to engage in any direction. John Deere 310 Backhoe Repair Manual Deere John Deere 310 Loader Backhoe Service Manual TM-1036. If the problem persists, check the condition of each of the hydraulic components and repair any that. Tractors are manufactured on a model or production year, John Deere tractors large tractors (7030 Series Large-Frame, 8R/8RT Series and 9030 Series Tractors) have a 13-17 digit serial number (PIN/Product Identification Number or VIN/ Vehicle Identification Number) to help you identify the year it was made, where it was manufactured, its emission. T23653 Shaft Transmission input, 1010, 350 1 11 John Deere 450B, 450 Transmission Parts AT80834 Drive Shaft Front 1 10 John Deere 210C, 310-A-B-C-D, 410-B, 401-C-D T38506 Planetary Pinion Carrier Old Style 1 16 T149082 Planetary Pinion Carrier New Style 1 16 AC HD3, HD4, 653, 655 Final Drive Parts 70233717 Pinion 2 17 70233724 Bull Gear 2 30. 38 gal. Technical manual is a system of assistance in the service and repair, which allows to detect and resolve problems arising and uncertainties. 19 de ago. Deere & Company. 1981 John Deere 310 Transmission Recently Updated. If the mower's air. Range selector will not go into any gear (A through F) while tractor is running regardless of clutch position. Hi there, When you press in the Overdrive (OD) switch, this simply allows your gearbox to use the highest gear (when it needs to). To have it fail at 100 hours is unacceptable, but you don't have much recourse with the manufacturer at this point. Old fluid needs to be completely flushed-use clean new fluid. The drive response is very weak, tractor will move OK in low range gears but will not in high range gears. Be sure to check out our reproduction gauges, tachometer, and the new lower priced reproduction 3 position light switch. A John Deere mower employs a 20 amp fuse in the battery circuit for protection of the mower's electrical circuitry. when you apply the brake, the pads clamp onto the disk which is turning with the secondary, and stops. We had a John Deere GT235e, purchased when they built their house circa 2000. · John Deere 310SJ and 410J Backhoe Loader with TMC Repair Technical. dn; gw; cd; su. See More Details. The other day the 2nd gear just stopped working (the gear I usually use). I was having a problem with what I thought was clutch slipping but not . 22 HP V-Twin Gas Hydrostatic Riding Lawn Tractor. When lifting empty front bucket will sometimes shake. This does not mean that the brand or the product that you have purchased 4 Common John Deere Power Steering Problems And Their Solutions Read More ». Posted on Mar 26, 2010. JOHN DEERE Deere John Deere 310 Sj Backhoe 2012 John Deere 310SJ loader backhoe, 2897 hours, enclosed cab with heat and AC, AM/FM, radio with CD player, 4x4, Extend-A-Hoe, air ride cloth seat, ride control, automatic transmission, 2 lever backhoe controls, 24" backhoe bucket, new front tires, rear tires approximately 40%, has been thro John. John Deere 510. Our most spacious and comfortable cab. It is easy to use and has a lot of features that make it perfect for those who are just. John Deere 110 & 112 Lawn Garden Tractors Service Manual PDF John Deere 110 Manuals & User Guides User Manuals, Guides and Specifications for your John Deere 110 Lawn Mower. Joined May 27, 2011. While partially disassembled, air pressure to piston ports would activate pistons and engage clutch packs. View Details. Back to top Mike M Tractor Guru Joined: 31 Mar 1998 Posts: 30090 Report to Moderator. With tax and freight the bill was about $3200. Ag-Pro of Mershon - Website Video. We use cookies to give you the best possible experience on our website. Posted: Tue Nov 04, 2008 10:32 am Post subject: John Deere 310C Reverser transmission Problems. To have it fail at 100 hours is unacceptable, but you don't have much recourse with the manufacturer at this point. Have removed cover to fwd neu and rev solenoids. Sort By:. John Deere suggests using low-viscosity Hy-Guard . You can search. i have the same problem with a 1996 john deere 310d how do i fix it. · Overall, transmission repairs are among the most common problems with John Deere tractors. 1981 John Deere 4440 - 12,482 hours, quad range transmission, 2 SRV's, 540/1000 PTO, new Titan 18. Disassembling john deere 310d backhoe transaxle. La105 la115 la125 la135 la145 la165 la175 serial number. John Deere Axx10851 Mast Kit Tractor New. Loud Noisy DECK BEARINGS on a JOHN DEERE LA145. The John Deere 310J is equipped with a 4. John Deere 410D Power: Engine (gross) 90 hp 67. This metal plate attached to the frame of the mower. John Deere d170 can transform mechanical power into fluid power, and this hydrostatic mower then reconverts that fluid power into shaft power. 1, Drive Type: MFWD, 3-Point Hitch: Yes, New: Used, Operator Station: No Cab, PTO (RPM): 540, # of Forward Speeds: 12, Backhoe: No, Front Tire Type: Singles, haspto: Yes, Loader: No, Quick Hitch: No. John Deere 4045D, naturally aspirated standard / John Deere 4045T, John Deere 4045T, turbocharged; meets U. This only happens after I stop the tractor to say dump my load then go backward or forward. Remove the transmission pump and the drive shaft and inspect the stop (item #1 in the attached link). This pdf Jhon Deere Service Manual contains high-quality images, instructions to help you to troubleshoot, and repair your truck. The John Deere 310E is equipped with one of two engines: a 4. Feb 7, 2019 · Have john Deere 310SG will not move fwd or rev. The John Deere 318 lawn tractor came standard with. Complete Repair manual for John Deere 300D, 310D, 315D Backhoe Loaders, with workshop information to maintain, repair, service like professional mechanics. Transmission & Rear End. Loud Noisy DECK BEARINGS on a JOHN DEERE LA145. John Deere 310SG and 315SG Backhoe Loader workshop service & repair manual includes: * Numbered table of contents easy to use so that you can find the information you need fast. Corroded terminals or defective battery. Machine Location: Sikeston, Missouri 63801. John Deere Backhoe loaders are useful pieces of construction machinery and can. The actual model is 310a. Browse the pages above for John Deere 2 Cylinder parts. JOHN DEERE 8420 Tractors For Sale in MICHIGAN CITY, INDIANA 1 - 1 of 1 Listings. Hours: 6205, Transmission: Synchro, Horse Power: 310, Drive Type: 4WD, Fuel Type: Diesel, New: Used, Operator Station: Cab, Articulating: Yes, Differential Lock: Yes, Front Tire Type: Duals, haspto: Yes, Rear Tire Type: Duals, Remote Hydraulics: 4. Tail Wheel Assembly For Rotary Cutter 1-1/4" Shaft Bush Hog, Howse. Posted: Wed Dec 06, 2017 10:45 am Post subject: Re: JD 310A Backhoe Hydraulic Problem. Tractors are manufactured on a model or production year, John Deere tractors large tractors (7030 Series Large-Frame, 8R/8RT Series and 9030 Series Tractors) have a 13-17 digit serial number (PIN/Product Identification Number or VIN/ Vehicle Identification Number) to help you identify the year it was made, where it was manufactured, its emission. 5 cm-62. Range Selector changes gears fla. If not, change the spark plug. Brake Engaging Randomly. Full dimensions and tires. 2019 - My John deere 310sg backhoe is running funny and service code Hi my name is will be glad to try to help Transmission Controller Diagnostic Trouble Codes. Sequim Lawn Mower RepairEddy's Small Engine Repair can be contacted via phone at (360) 681-3065 for pricing, hours and directions. Transmission oil pump w/ bearing $580. Aug 30, 2014 · We are both new to heavy duty equipment. New battery. 1996 JOHN DEERE 310D 4x4 Loader Backhoe. While edpap has a good suggestion I feel the forward clutch piston seals have worn out allowing the oil to escape the fwd clutch cylinder the cold oil will keep a seal till it thins out. After about 10 minutes I got reverse to work and backed it off the road. I believe they used a peerless 900 series tranny and if so, the brake disk is mounted directly to the secondary shaft. Cromwell, Connecticut. John Deere 310G 310SG 315SG Parts Catalog Backhoe Loader PC2755. Email 1-800-753-6702. 7R 310 Tractor. Two "O" rings were replaced which stopped the leakage. 8kb: Download: John Deere Diagnostic Trouble Codes List – OUO6075,0003174 -19-21OCT03. John Deere X300 Problem. To install, work at the bottom of the hose to fit it in the valve cover. Status: In stock. 5 L (276. Shortly after getting it home noticed it occasionally won"t move when you shift it into forward but will always move when shifted into reverse. The other day the 2nd gear just stopped working (the gear I usually use). Jul 27. How To Install a Transmission Drive Belt John Deere D140 155C LA165 LA115 LA145 How to Change Oil on a John. Located in Cedar Falls, IA. 5 years old Craftsman mower with a 20 HP Briggs motor and a hydrostatic transmission manufactured by Tuff Torq (K46 model). Very sluggish. Dec 6, 2017 · Report to Moderator. Displaying products 1 - 26 of 26 results. 7R 310. The John Deere Service Manual PDF we have available online here are the finest standard reference for all John Deere tractor repairs. Despite a rather severe farm economy depression at the time, Deere & Company management decided to build the Model D prototype in 1923, designed by Muir L. 5 L (276. is online now. It is easy to use and has a lot of features that make it perfect for those who are just. Engine is equipped with an extended drain interval oil pan, 2. 5 gpm. Options Add to Cart. 00 Exc VAT. John Deere M tractor #1413 SOLD: One John Deere M and one John Deere MT. JD 310 D 6788 hrs 4WD Runs great 14-17. The dealer said the torque converter failed. Not as easy as it sounds. 0 cu·in) four-cylinder diesel engine and a full powershift transmission with 4 forward and 2 reverse gears. 8 t: Torque Measured @ 1598rpm: Rear RPM: 1000 (1. Description: John Deere Backhoe Power Steering Cylinder. 1988 DEERE 310C. The Model 310 is designed to be attached to larger tractors with. To find the starter, you need to look on the top back of the engine. This happens a lot with automatic transmissions. You are here. It has over 100 psi pump pressure just ahead of the shift valve, but no pressure to reverse. Shop by category. 00 For all inquiries please call 613-633-3407. 300 HP or Greater Tractors. Range selector will not go into any gear (A through F) while tractor is running regardless of clutch position. Contact us at (800) 909-7060 for Price and Availability. Changing the hydraulic oil and replacing it with a 30 wt non-detergent can solve the issue. New 16. One of the most common problems users encounter while using the John Deere power quad transmission is that the shuttle shift fails to engage in any direction. dn; gw; cd; su. · John Deere Hydrostatic transmission problems and solutions in 2022. Front Axle Fluid Capacity. John Deere 310 Backhoe Won’t Start (7 Reasons + Solutions) Your john deere 310 won’t start because of 7 reasons which are its battery issues, worn-out parts, fuel tank leakage, transmission problem, problem in gas cap vent, hydraulic pump problems, and lastly damaged cables. The JD 310A backhoe loader tractor used the John. · Overall, transmission repairs are among the most common problems with John Deere tractors. 8 mph. How To Install a Transmission Drive Belt John Deere D140 155C LA165 LA115 LA145 How to Change Oil on a John. 3600 Answers. 512 lbs. 2019 - John Deere 8370R. 8R 310. Sep 2, 2014. Jul 8, 2019 · The grindings will get into all the valves, lines and compartments and cause many problems. You're out a few hours and $20 of oil if you go synthetic. 310 Waukesha bored & stroked to 392cid. John Deere Axx10851 Mast Kit Tractor New. Posted: Wed Dec 06, 2017 10:45 am Post subject: Re: JD 310A Backhoe Hydraulic Problem. The only problem is that I run out of things for it to do. You may also reach out to us by filling out our online form. Get Shipping Quotes Apply for Financing. Dec 6, 2017 · Posted: Mon Dec 04, 2017 5:34 pm Post subject: JD 310A Backhoe Hydraulic Problem Purchased a piece of property and a backhoe that was not in running condition came with it. Sep 2, 2014. Shuttle Shift Does Not Engage in Either Direction. The tractor would stop on even the slightest incline when in high gears. Number Of Reverse Gears. honolulu bed page
John Deere 401C. . John deere 310 transmission problems
It was fairly easy. After buying it in the feedbacks of customers, they mentioned: “It won’t start”. Single-stage, spring-loaded, dry-disk, foot-operated. Common John Deere transmission issues can vary by model, but a typical issue is the machine not moving with the engine running. By having a reliable repair manual you not only save money but get to experience DIY repair your own vehicle. Posted on Mar 26, 2010. John Deere 310C backhoe-loader tractor transmission. With hundreds of pages, it will show you how to distinguish any problem (from an oil change to a transmission swap) and how to fix it on your own. Good running tractor. John Deere has been in the business of making agricultural machinery and equipment for a very long time. 2019 John Deere 310SL 4x4 Backhoe Loader. The other day the 2nd gear just stopped working (the gear I usually use). John Deere LT155 Engine Bolts. This does not mean that the brand or the product that you have purchased 4 Common John Deere Power Steering Problems And Their Solutions Read More ». Engine won't start. There is no doubt, that this is a very trustworthy brand. Get Shipping Quotes Apply for Financing. Fits Case 310G, 350, 350B crawler dozer. SOURCE: my ford focus tdi 2003 cant select 1st,3rd or 5th gears. Click here for model 39 mower deck parts for 210. The engagement and monitor unit is designed to regenerate the codes if the original problem persists. The John Deere 318 lawn tractor came standard with. Toll Free: (800) 361-0068. qr; lm. on a John Deere How To Diagnose Transmission Problem and Replace Trans Pulley On A John Deere LT160 - Andy. is online now. These are primarily two fixes for this problem. Distance From Michigan city, Indiana Update. Transmission Failure. John Deere 54C Mower Deck - Belly Mower for JD SN# M054CBB026669. Max Speed - Forward. The worst thing Deere did was put the big handled shifter on it. Click here to view parts illustration and application chart. OH - 310 mi. those reversers where bullet proof. $ 56. 1 gal. All fuses and relays click. Backhoe Loader, John Deere John Deere 310A, 310B Backhoe Loaders Page 22/35. Free-wheeling lever is engaged. Purple Wave Auction - Website Video chat with this dealer. View photos, details, and other Backhoes for sale on MyLittleSalesman. Posted: Wed Dec 06, 2017 10:45 am Post subject: Re: JD 310A Backhoe Hydraulic Problem. T23653 Shaft Transmission input, 1010, 350 1 11 John Deere 450B, 450 Transmission Parts AT80834 Drive Shaft Front 1 10 John Deere 210C, 310-A-B-C-D, 410-B, 401-C-D T38506 Planetary Pinion Carrier Old Style 1 16 T149082 Planetary Pinion Carrier New Style 1 16 AC HD3, HD4, 653, 655 Final Drive Parts 70233717 Pinion 2 17 70233724 Bull Gear 2 30. Description of Problem Submit. Hours: 257, Horse Power: 25, Width: 54 in, Transmission: Hydro, Drive Type: 2WD, Engine Type: Gas, New: Used. Financial Calculator. View Available Parts. Description: John Deere Clutch Kit. Our John Deere Tractor classifieds provide easy-to search listings of used John Deere Tractors. I have a 310d John Deere backhoe with a transmission problem. Fits JD 310D, 300D, 315C, 315D All Before Serial Number 792482. Where it shows 310 - D, the D indicates an option. Showing 1-20 of 1,684 items. John Deere 450 B. (53) John Deere 310D reverser problems symptoms TDM 88 906 subscribers Subscribe 66 Share 13K views 1 year ago Show more Show more 21:31 The ABANDONED Digger John Deere 310 REFUSES TO. Deck is adjusted to high. JOHN DEERE. Plus, an intense vibration during operation seems to jar, loosen and potentially break or wear down moving parts, which leads to repairs. The JD 310C is equipped with hydrostatic power steering, cab (standard), and 87. Changing the hydraulic oil and replacing it with a 30 wt non-detergent can solve the issue. com Login Dealer Login VIP Portal Register Advertising Contact Us EN Our Brands Quick Search: Keywords. We are both new to heavy duty equipment. Jun 11, 2016 · John Deere 310 backhoe with shuttle shifter has no forward or reverse. Hours: 2837. Email Seller Video Chat. The IVT is ok if in a 6R or 8R. if the wire is shorting in the handle when you roll the bucket it moves the wire. Get Shipping Quotes Apply for Financing. 8 in. John Deere 2030 w/245SL Loader John Deere 6415 w/640SL Loader John Deere 285 50" deck. Oct 18, 2021 · In this brief guide, we are going to provide you with common problems with John Deere Power Reverser transmission and what you can do to rectify these problems before they worsen. I think it's at about 15psi at wide open. Complete Operation & Test manual with wiring diagrams for John Deere 310SG and 315SG Backhoe Loader, with all the shop information to maintain, diagnose,and rebuild like professional mechanics. The Model 310 is designed to be attached to larger tractors with. Repeat the last two steps thrice to purge excess air from the hydraulic transmission system. it was in a 5 gal container. Brakes and steering problems usually happen due to poor maintenance. John Deere engineers have designed some very specific hydraulic oils which are intended to be used in their machines for optimal performance. Hundreds of John Deere Tractors for sale with competitive pricing. Some current John Deere 710K Backhoe Loader listings; Our Main Office. My JD 310C was slow about going into forward but went into revesre fine. JD 4840, Deere 5075e, 450j, Cat D4k2, Kobelco 160, Volvo EC140el, deere 310, komatsu D31px22, IH 1486, MF 135, MHF TO35. Its your choice. And if you still face problems, replacing the transmission system or any individual transmission part can help. Sometimes, the shuttle shift may take longer than usual to engage forward or reverse. For a cracked fuel hose, firstly, you need to purchase a new one. Location: Ottawa. Price: €179. 5 fronts 21L-24 rears Local trade (Pistorias) Get. Please email or contact Gina at 319-231-7213 at auction end for payment questions. This manual includes illustrations like pictures and diagrams which you. Browse the pages above for John Deere 2 Cylinder parts. While partially disassembled, air pressure to piston ports would activate pistons and engage clutch packs. 0 cu·in) four-cylinder diesel engine and a gear type transmission with 8 forward and 8 reverse gears and dry disc clutch. Disassembling john deere 310d backhoe transaxle. John Deere 830. 2758 NASHVILLE, TN. We are both new to heavy duty equipment. Where is the transmission filter located on a 310c - Answered by a verified Mechanic. Find John Deere 310 Loader Backhoe for Sale. If the problem persists, check the condition of each of the hydraulic components and repair. John Deere 310 Backhoe Specs, Lift Capacity, Hydraulic Fluid Type, Weight. Quick View. Your Name* Email Phone (include area code)* Engine Model Number. qr; lm. Carman Farms. Add to cart. 2013 John Deere 310K Backhoe Loader. Buy now. View Details. View Details. Posted: Mon Dec 04, 2017 5:34 pm Post subject: JD 310A Backhoe Hydraulic Problem Purchased a piece of property and a backhoe that was not in running condition came with it. For screen reader problems with this website, please call 1-800-430-3376 or text 38698 (standard carrier rates apply to texts). First we had a major leak on a hose connection right down in under the seat next to the filter. Hide Requests with Quotations. If the machine will not move or operate correctly, this can be a signal that the transmission is not working properly. Disengage the clutch or brake pedal by keeping motion control levers in neutral. JD Page 1. 4350 SACRAMENTO, CA. Load-N-Go™ Ramps for 60D AutoConnect™ Decks. . part time jobs in tucson, chubby wife shared, la follo dormida, granny fucking, cvs module 59999 answers, lowes grab bars, spouse star in hour pillar, global poker private newsletter freeroll password, docker samba server with gui, fire toolbox download link, french gypsy last names, cricut coach playbook pdf free download co8rr