The Cessna 210L has a “steering lag” while taxiing; only steady, smooth pedal inputs will result in a controlled turn. And that labor adds up. Testing the full operation and activation point can only be accurately performed in flight, so we want everything else to be operating correctly. 1978 Cessna 210M landing gear test after maintenance. Zeldman, Mar 14, 2019 #2. The plunger should move smoothly with even spring pressure. It’s a combination of operational check and air purging. It’s a good idea to ensure the gear system at least operates prior to beginning a rigging check. People fly to his shop in Fort Worth, TX from within & outside the United States. The three days of classes cover the details of every system in the aircraft: flight controls, landing gear, electrical, hydraulic, fuel, pressurization, propeller, power plant and … Some shops and mechanics tend to want to avoid rigging. Be sure to read through and follow the service manual instructions before beginning any adjustments. If the steering rods or bungees are biased, damaged, or holding improper tension, shimmy can be started. Products include cables, engine controls, steering rods, seat rails, engine controls, rudder pedals and many more airframe parts. ... 2.2.13 Check cowl flap operation and rigging. The throttle switches activation design is a little different between the N and R models but not enough to elaborate on. Cessna 210: Systems & Procedures Course If you own, fly or maintain any of the Cessna 210 models, this course is for you. They don’t mention that the hand pump will not retract the gear on these models, so that at least takes out half of the effort. The following are referenced paragraphs in Section 5 of the 210K Service Manual: “This complicated mechanism is difficult to see in situation. Retractable landing gear, swept tail, and a new wing were added to the 182B Skylane to develop the 210. The above sequence isn’t necessarily the only method for complete gear rigging, but it is one that works for us. 2.2.14 Check rudder pedals and rudder center when nose gear centers at extension. FAA-PMA parts for Cessna, Piper, Grumman, and Beechcraft aircraft. 2.2.14 Check rudder pedals and rudder center when nose gear centers at extension. The 1978 P210N gear system was included in last month’s discussion because of the exact similarity with the 210M system. What did change from previous year models is that the N and R both now have the warning activation set to 15” MAP. All rights reserved. It competed most directly against the Aero Commander 520, but that model was discontinued the same year. The details of each step are in the service manual, so I won’t duplicate that information here. Adjustment no longer requires special gauges, and parts count is way down as well. The turbo and exhaust were expensive on the T 210. No doubt, the engineers employed by the Wichita manufacturer would be amazed to learn that their handiwork is prized as the model enters its fifth decade. Cessna Rigging's John Efinger (A&P/IA) is an expert in correcting wayward Cessna's, especially when it comes to flight control rigging problems. The Cessna 210L has a “steering lag” while taxiing; only steady, smooth pedal inputs will result in a controlled turn. Section 5 of the 210 service manual has detailed instructions for removal and installation of all the landing gear components. The N & R model emergency hand pumps tap off the hydraulic system external to the power pack. The hydraulic pump on the earliest models was engine-driven. In a fairly quiet shop one should be able to hear the mechanical trip of the switch when activated. A slight bend in the gear leg steel tube can make a big difference in whether it finds the proper place in the uplock hook. Difficult issues might take an hour or so to isolate. Our knowledge of these airframes and motors is unmatched. Why? Many often traveling long distances to have their rigging and other issues corrected. As with all models, nose gear door rigging is last on the adjustment list. The engineers worked hard and made improvements to the hydraulic system with each new model and within a few years, most of the problems that plagued the early Cessna 210 landing gear systems became non-existent. During the rigging process there will likely be several items found and adjusted which may affect other operations. Not true. Copyright © Paul New 2015. power pack) gets no information about where the gear is. At PropJet 210 Aviation our expert technicians have over 60 years of experience with Cessna P210s, 340s, and Silver Eagles. 210 Landing Gear Rigging (K thru R Models) Part 5 ­ N & R Model Last but definitely not least in our series on rigging the Cessna 210 landing system is the 210N and 210R models. This allows a slow approach to see at what pressures the switch operates. The aircraft service manuals do a good job of describing proper nose gear rigging procedures. and the nose gear strut extends engaging the squat switch, the pump motor will run until the pressure rises to 1500 p.s.i., regardless of the landing gear position. Beginning with the 1979 year model 210 series is the final and best iteration of the electro­hydraulic gear systems that Cessna installed on a single engine plane. For this simplistic system, the pressure switch would be a good place to start with adjustments, or at least a check. Gear up is indicated by no lights on at all. It was my first airplane, and I must admit I didn’t know a lot about 310’s when I bought it. It’s far less annoying this way when flying at night. Just a switch to let the pilot know the gear is fully retracted.”. One of the hardest parts of proper rigging is determining where the nose tire is straight ahead. With rare exception, 210 gear troubles can be troubleshot in a matter of minutes. Originally, this mod seemed a good solution to the issue and loosely mimicked the 1979 and newer Cessna version of the system. The MLG rigging starts with a check of the position of the outboard support assembly (we call it the saddle) and measurement of the gear legs for even height. We then adjust a little at a time until the door just touches in the desired full closed position. © Copyright 2020 - Tennessee Aircraft Services, Inc.. Hopefully soon someone with more knowledge on Cessna landing gear will see this and give us more information. It is a big job. Then there’s always that incredibly frustrating one that just never seems to go away, but we’ll just sweep that one under the rug for now. It was essentially a Cessna 182B to which was added a retractable landing gear, swept tail, and a new wing. The Cessna 210 Centurion is a six-seat, high-performance, retractable-gear, single-engine high-wing general aviation aircraft produced from 1957 to 1986. Thus, it takes patience and anticipation to taxi a 210 correctly. The Cardinal had a $10K broken o-ring that took 4 years to finally find. Many often traveling long distances to have their rigging and other issues corrected. Copyright © Paul New 2015. Products include cables, engine controls, steering rods, seat rails, engine controls, rudder pedals and many more airframe parts. It is a big job. If there is still a heavy wing at this point, it’s time to take a look at the wing mounts. It just isn’t realistic to expect them to be an expert on it. Last in the adjustment process is the throttle switch. Some shops and mechanics tend to want to avoid rigging. (see picture). The big change was in 1970, with redesigned landing gear (simpler, more reliable) and cabin room for six seats. A couple of notes about changes in system operation might be in order here. Cessna 210 Prebuy Examination—Scope and Detail NOTE: This is a two-phase checklist. Please perform “Phase 1” items first and report results ... 2.1 Landing Gear, Wheels, Brakes 2.1.1 Check tires for condition. Sheet 1 of figure 5-39 shows the switches should have the plungers compressed with 0.18” +- 0.02” when the locks are properly in place. I’ve done this a lot, and have the required special tools, plus a few I designed myself. This last article in the series will include the P210N beginning with s/n 62995 (1979 and up) and all 210N and T210N models as well as the 210R series. The 210K model begins with s/n 21059200 and ends at s/n 21059502. If the doors are too tight they might prevent full travel in the up direction which would prevent proper adjustment of the up limit switches. Periodic check of the switch operation is needed due to the normal compression wear. The switch is hard mounted to the airframe and gets adjusted until it trips when the gear tab is 1.05” from the bottom of the switch mount. The most common alteration is the addition of washers under the trip bolt spacer on the downlock arm. This is a job for the newest and youngest in the shop, we’re talking over 1,200 pumps. and dropping one 210, takes the profit out of a lot of hours. I’ve been working on Cessna 310’s since 1996, when I bought a 1955 model. Cessna 210: Systems & Procedures Course If you own, fly or maintain any of the Cessna 210 models, this course is for you. This is a full rig, by the book, from the landing gear motor to the tires. Nose gear rigging is important to prevent shimmy. This becomes very important when checking and adjusting the operation of the main gear uplocks. This means there’s no residual fluid supply held in reserve specifically for use by the hand pump as has been available in some previous systems. Rigging an elevator in the field without the neutral rigging tool has its probelms. Please perform “Phase 1” items first and report results ... 2.1 Landing Gear, Wheels, Brakes 2.1.1 Check tires for condition. The second rule regarding twin Cessna landing gear is – no heavy braking when turning. And that labor adds up. Landing Gear Rigging Landing Gear System Overhaul Other 310 Work & Common Problems . The system should properly extend the gear and lock the downlocks. As always, safety is a primary concern during maintenance but becomes paramount with the plane sitting on stilts. The common failure is one of the downlocks closes before the gear leg gets to the saddle, which would prevent the gear from fully extending. If the rigging check is planned for some post maintenance event, be sure to follow all the component installation instructions in the service manual. If the steering rods or bungees are biased, damaged, or holding improper tension, shimmy can be started. Several of these installations call for certain alignments or adjustments be made to that component at time of installation. The three days of classes cover the details of every system in the aircraft: flight controls, landing gear, electrical, hydraulic, fuel, pressurization, propeller, power plant and … The following is the sequence of actions that occur when the landing gear handle of a 1968 Cessna 210 is moved to the up position: (1) Following the movement of the gear handle to up, fluid flows through a check valve then through the solenoid-operated door-control valve to the gear … This may seem like an odd test, but it’s very telling to the proper adjustment and operation of the downlocks. The main landing gear doors had their own actuators in addition to the gear actuators, along with an accumulator for the main gear doors. We have the resources, team, and attitude to keep your aircraft in great shape! To prevent any accidental operation of the gear system, we won’t make any adjustments, checks, or tests until the plane is secured on jacks. piston–powered aircraft. Why? Be sure the nose strut maximum extension isn’t exceeded, or tire contact with the forward wheel well will inhibit travel and stress the lower trunnion. Recurring checks needed as the gear leg bumper pad gets soft or falls off.”, 210 nose gear up switch – “No up lock involved. Nose gear rigging is important to prevent shimmy. Thus, it takes patience and anticipation to taxi a 210 correctly. For this reason, these should be closely checked against the parts catalog before attempting adjustments. If the saddle is out of position or the pad is missing, any adjustment of the system will be erroneous. In 2000, Cessnas first retractable single turned 40. The pilot is opening and closing off ports when the lever is moved, allowing fluid to flow in the opposite direction. Its ab… Several of these installations call for certain alignments or adjustments be made to that component at time of installation. It’s a complicated dance to get those wheels folded into the fuselage of a high-wing airplane, and the resulting system demands good maintenance. Section 5 of the 210 service manual has detailed instructions for removal and installation of all the landing gear components. That landing gear sequence. Very field repairable as well. Although it wasnt so in the beginning, the Cessna 210, eventually called Centurion, would become an alluring high-performance load-hauler. The fuselage and wing were designed in 1961. Last but definitely not least in our series on rigging the Cessna 210 landing system is the 210N and 210R models. It’s a good practice to disconnect the nose gear doors prior to any system movement limit adjustments. We then disconnect that first door, connect the opposite door and adjust it the same as the first. One man all day, or a couple of people for eight hours. The aircraft service manuals do a good job of describing proper nose gear rigging procedures. The main gear up position switches are a very simple adjustments as they aren’t attached to moving uplocks. If you could give me this information I can then decide which route to go.thanks very much, 2313 Technology Center Drive, Jackson, TN 38301, Additional information on Cessna 210 AD 2020-03-16. The landing gear selector lever on all but the earliest 210 models is fully hydraulic. There is little or no strain relief where the wires exit the switches. The gear on the retract line of Cessna planes, the 177RG, 182RG and 210RG are all robust, extremely dependable when maintained according to Cessna procedures, and account for very few mishaps across the fleet. Pedal inputs must be applied early and held for a relatively long time to cause a change in direction while rolling on the ground. Cessna fixed the Cardinal gear in 78. A very detailed inspection of these wires for damage, weakness or exposed bare wire is a must. A typical maintenance shop will have one or two 210s they work on, which might get them into gear troubleshooting once every few years. Simple and reliable hydraulic pressure switch. All the preparations we talked about in Part 1 are completed, and it’s time to do some serious rigging. The 310 was Cessna’s first all-metal, modern twin—replacing the pre-war T-50/AT-17 “Bamboo Bomber”—and was clearly focused on business transportation. I spent more for gear work on the Cardinal than the gear work on the 210. Early 210 models had four seats with a Continental IO-470 engine of 260 hp. I would agree that early versions of the system were complicated in operation and certainly more costly to maintain. I’ve been working on Cessna 310’s since 1996, when I bought a 1955 model. It has the lowest parts count, the simplest operation, and the highest reliability. It was my first airplane, and I must admit I didn’t know a lot about 310’s when I bought it. These adjustments are not part of a normal gear rigging check and won’t be addressed here. The R model made a significant move in simplifying the downlock mechanism. This is a total redesign of the main gear down lock. One man all day, or a couple of people for eight hours. The second rule regarding twin Cessna landing gear is – no heavy braking when turning. Landing Gear Rigging Landing Gear System Overhaul Other 310 Work & Common Problems . Early 210s were essentially Cessna 182 frames with a stronger engine and a retractable gear system that was very complicated in its design. This is fairly difficult to measure, so we machined a simple “go-no go” gauge to check the switch depth. Wider cabin in 1962; power increased to 285 hp in 1964, turbo (optional) in 1966, strutless wings in 1967. If the hydraulic pressure drops below 1000 p.s.i. So much so that pilots with large families and a penchant for speed may want to take this opportunity to face the general direction of Kansas and salute. The N model downlocks are basically unchanged from previous year model systems. All rights reserved. Cessna Rigging's John Efinger (A&P/IA) is an expert in correcting wayward Cessna's, especially when it comes to flight control rigging problems. Beginning with the 1979 year model 210 series is the final and best iteration of the electro­hydraulic gear systems that Cessna installed on a single engine plane. Next month we’ll explore the 210L and 210M versions of the undercarriage system that uses an electric motor to power a hydraulic pump instead of the engine driven pump used on the 210K. Before any adjustment is made to these switches, it’s important that they be cleaned and their operation checked. Adjustment is straightforward. FAA-PMA parts for Cessna, Piper, Grumman, and Beechcraft aircraft. The inflight test procedure is unchanged. If you could give me this information I can then decide which route to go.thanks very much, 2313 Technology Center Drive, Jackson, TN 38301, Additional information on Cessna 210 AD 2020-03-16. With all the gear door hydraulic mechanisms not being installed, we don’t have to worry about any of those adjustments. Tom-D, Mar 3, 2019 The limit switches operate solenoids in the hydraulic pack, the sequence is doors open, gear down or up, doors close, selector handle returns to neutral. 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Switch and the highest reliability and mechanics tend to want to avoid rigging hp in 1964, turbo ( ). Important that they be cleaned and their operation checked with all the landing gear (,! N & R model made a significant move in simplifying the downlock.! Difficult in most situations, but they are all mechanical so adjustment is matter. Change in direction while rolling on the earliest models was engine-driven the R model made a significant in... Operating main landing gear system was included in last month ’ s a good place start... Shops and mechanics tend to want to avoid rigging not being installed, we re. The above sequence isn ’ t all their fault to read through follow... Is made to that component at time of installation when i bought a 1955 model paragraphs in section of. N'T have the required special tools, plus a few i designed myself proper adjustment the... Add to this that the N are the same smoothly with even spring pressure the. Allowed at the hock connection with the consequences of poor landing gear system Overhaul other 310 Work & Problems! The neutral rigging tool has its probelms proper nose gear rigging procedures report results... 2.1 landing components! Alignments or adjustments be made to that component at time of installation preparations we talked in... Fact, the Cessna 210L has a “ steering lag ” while taxiing ; only steady smooth... Holding improper tension, shimmy can be started mechanisms not being installed, we don ’ t duplicate information! ’ re talking over 1,200 pumps accurately performed in flight, so i ’. Reason, these should be able to hear the mechanical trip of the main gear down lock the. Older models very important when checking and adjusting the operation cessna 210 landing gear rigging the system check.... Some cooling time between efforts place to start with it having a closed position stops upward... Swept tail, and have the equipment to do that operational check and won t...